DE102022119046A1 - Throttle device for limiting an oil flow in a line element of an internal combustion engine, arrangement and modular system - Google Patents

Abstract

The invention relates to a throttle device (1) for limiting an oil flow (4) intended for lubricating at least a partial area (2) of an internal combustion engine (3) in a line element (5) of the internal combustion engine (3) through which oil can flow, with a line element (5) through which oil can flow. first length region (11), with a second length region through which the oil can flow, which adjoins the first length region (11) at least indirectly in the flow direction (12) of the oil flowing through the first length region (11) and is fluidly connected to the first length region (11). Length region (13), which has a smaller cross section (15) through which the oil can flow than the first length region (11), with a transition region (16) through which the oil can flow, via which the length regions (11, 13) are fluidly connected to one another, wherein the throttle device (1) can be arranged in the line element (5) which is designed separately from the throttle device (1) and through which the oil can flow, in order to limit the oil flow (4) of the oil flowing through the line element (5).

Description

The invention relates to a throttle device for limiting an oil flow intended for the lubrication of at least a partial area of an internal combustion engine in a line element of the internal combustion engine through which oil can flow, with the features of patent claim 1. The invention further relates to an arrangement of a throttle device for limiting an oil flow for the lubrication of at least a partial area of a Internal combustion engine provided oil flow in a line element of the internal combustion engine through which oil can flow with the features of patent claim 4 and a modular system for producing at least two construction variants of an internal combustion engine for a motor vehicle with the features of patent claim 10.

Internal combustion engines, for example for driving a motor vehicle, are already well known from the general state of the art. Such an internal combustion engine usually has an oil circuit through which oil can flow, which is provided for lubricating components of the internal combustion engine. The oil circuit usually has at least one line element through which oil can flow.

It is the object of the invention to provide a throttle device for limiting an oil flow intended for lubricating at least a portion of an internal combustion engine in a line element of the internal combustion engine through which oil can flow, and an arrangement of a throttle device for limiting an oil flow intended for lubricating at least a portion of an internal combustion engine in a line element of the internal combustion engine through which oil can flow To create a line element of the internal combustion engine and a modular system for producing at least two structural variants of an internal combustion engine for a motor vehicle, so that different structural variants of the internal combustion engine can be manufactured with particularly little effort and particularly in line with requirements.

This object is achieved according to the invention by a throttle device for limiting an oil flow provided for the lubrication of at least a partial area of an internal combustion engine in a line element of the internal combustion engine through which oil can flow with the features of patent claim 1, by an arrangement of a throttle device for limiting an oil flow provided for the lubrication of at least a partial area of an internal combustion engine Oil flow in a line element of the internal combustion engine through which oil can flow with the features of patent claim 4 and by a modular system for producing at least two construction variants of an internal combustion engine for a motor vehicle with the features of patent claim 10. Advantageous embodiments of the invention are the subject of the dependent claims and the description.

A first aspect of the invention relates to a throttle device for, in particular targeted, limiting, in particular adjusting, an oil flow intended for the lubrication of at least a partial area of an internal combustion engine, in particular for a motor vehicle, in a line element through which oil can flow, in particular in a supply line through which oil can flow Internal combustion engine. The oil flow can be understood in particular as an oil flow of the oil flowing through the line element. The line element is, for example, part of an oil circuit of the internal combustion engine through which the oil can flow. The throttle device is preferably designed separately from the line element.

The motor vehicle can preferably be driven by means of the internal combustion engine. The motor vehicle is preferably designed as a motor vehicle, in particular as a passenger car, commercial vehicle or truck. Alternatively, the motor vehicle is designed, for example, as a passenger bus or as a motorcycle, in particular as a motorcycle.

The throttle device has a first length range through which the oil can flow. The throttle device has a second length range through which the oil can flow, which is at least indirectly, in particular directly, adjacent to the first length range in the flow direction of the oil flowing through the first length range and is fluidly connected to the first length range, in particular at least indirectly or directly. In other words, the oil flowing through the first length range of the throttle device can be introduced into the second length range of the throttle device, in particular can be removed from the first length range and introduced into the second length range.

In order to be able to produce different construction variants of the internal combustion engine with particularly little effort and particularly in line with requirements, the second length range has a smaller cross section through which the oil can flow than the first length range. In other words, the first length range has a first cross section through which the oil can flow and the second length range has one of the Oil can flow through the second cross section, the second cross section being smaller than the first cross section. This means that a size of the second cross section, in particular an area of the second cross section through which the oil can flow, is smaller than the first cross section, in particular an area of the first cross section through which the oil can flow. In other words, a flow of oil flowing through the throttle device, in particular the first and second length range, experiences a cross-sectional narrowing or cross-sectional taper when flowing from the first length range into the second length range.

The throttle device has a transition region through which the oil can flow, via which the length regions, in particular the first and the second length range, are fluidly, in particular directly, connected to one another. In other words, the oil flowing through the first length range can be introduced into the second length range via the transition area, that is, for example, it can be removed from the first length range and introduced into the second length range. Again in other words, the transition region is arranged downstream of the first length region and upstream of the second length region in the flow direction of the oil flowing through the throttle device, in particular the length regions. For example, the transition region can be understood as a region which is designed for, in particular directly, fluidly connecting the first and second cross-sections, which means that, for example, the cross-sectional taper can be brought about or is brought about by the transition region.

In order to be able to produce different construction variants of the internal combustion engine, for example a cylinder head of the internal combustion engine, with particularly little effort and particularly in line with requirements, it is further provided that the throttle device can be arranged or is arranged in the line element which is designed separately from the throttle device and through which the oil can flow, in order to control the oil flow of the oil flowing through the line element, in particular in a targeted manner, to limit, in particular to adjust. In other words, when the internal combustion engine is fully manufactured, the throttle device is arranged in the line element, in particular in an installation position provided in the internal combustion engine, whereby the oil flow of the oil flowing through the line element can be limited or is limited, in particular in a targeted manner. This means that the oil flow of the oil flowing through the line element is limited, for example, by the throttle device when the throttle device, in particular in its installation position provided in the internal combustion engine, is in the line element, that is, is arranged in the line element, and the oil flow of the Oil flowing through the line element is, for example, not limited by the throttle device when the internal combustion engine or the line element is free of the throttle device, that is to say when the throttle device is not arranged in the line element, in particular not in the installed position.

For example, the throttle device can be arranged or arranged in the supply line through which the oil can flow, which is provided for the lubrication of at least one bearing point, via which at least one actuating element to be held or held on the cylinder head of the internal combustion engine can be moved between at least two positions, in particular translationally, for actuating at least a pump element, by means of which oil can be conveyed through the oil circuit of the internal combustion engine in order to limit, in particular adjust, the oil flow of the oil flowing through the supply line and intended for lubrication of the bearing point. This means that the line element can be the supply line via which the lubrication of the bearing point, in particular for the actuating element, can be effected or is effected. The partial area of the internal combustion engine can therefore be, for example, the bearing point or the partial area can include the bearing point.

Alternatively or additionally, the supply line is provided, for example, for wetting at least one spring element that is coupled or can be coupled to the actuating element, in particular mechanically. In other words, the throttle device can be arranged, for example, in the supply line, in particular as the line element, which is provided for wetting the at least one spring element which is coupled to the actuating element, in particular mechanically, and through which the oil can flow, in order to control the flow of oil flowing through the supply line, and in particular to limit, in particular adjust, the oil provided in particular for wetting the spring element. The partial area can therefore include the spring element.

The invention is based in particular on the following findings and considerations: Different construction variants of the combustion Engine, in particular the cylinder head, can have different requirements with regard to an oil supply to the partial area of the internal combustion engine or different partial areas of the internal combustion engine. This means that in one construction variant of the internal combustion engine, for example, a requirement with regard to the oil flow flowing through the line element can be higher than in another of the construction variants. Thus, for example, an amount of oil flowing through the line element can be larger in one design variant than in the other design variant in order to be able to ensure lubrication of the partial area. Alternatively, in one design variant, for example, the amount of oil flowing through the line element can be lower than in the other design variant in order to increasingly direct the oil flowing through the oil circuit to a further sub-area of the internal combustion engine that is different from the sub-area in order to ensure lubrication of the further sub-area ensure or improve. For example, if the delivery rate of an oil pump is not optimal or is particularly marginal, a particularly high flow rate for lubricating the actuating element may not be acceptable. In order to be able to produce different construction variants with particularly little effort, it may in principle be conceivable to close the line element in one of the construction variants and not to close the line element in another of the construction variants. However, as a result, a fluctuation range in the flow of oil through the line element can be particularly large in the construction variants or between the different construction variants. This can, for example, have a negative effect on the lubrication of the internal combustion engine and/or on the corrosion resistance of the internal combustion engine.

In contrast, the throttle device according to the invention can be used, for example, for a first of the construction variants and, for example, not used for the second of the construction variants. This means that, for example, the first design variant has the throttle device, which is arranged in the line element, and the second design variant, for example, is free of the throttle device. This means that the different construction variants can be manufactured with particularly little effort and in line with requirements. The range of fluctuation in the flow of oil through the line element between the different construction variants can be kept particularly small or can be particularly reduced. As a result, particularly in both construction variants, the lubrication of the internal combustion engine, in particular of the bearing point or the actuating element, can be particularly improved or ensured and/or the corrosion resistance of the internal combustion engine, in particular of the spring element, can be particularly improved or ensured. As a result, for example, the service life of the internal combustion engine can be particularly increased. In particular, the same cylinder head can be installed or used in the design variants. As a result, the internal combustion engine can be manufactured with particularly little effort. In particular, costs, for example manufacturing costs, of the internal combustion engine can be kept particularly low.

Typically, the flow of oil through the line element, particularly referred to as oil flow, can increase particularly sharply at high or particularly high clearances and/or at particularly low oil viscosities. The play depends, for example, on component tolerances and/or wear on the actuating element and guide or bearing point. Furthermore, the play can depend on a component temperature of the internal combustion engine, in particular on the bearing point and/or the actuating element. This can be achieved, for example, by different expansion coefficients of respective materials, for example an aluminum bore and the actuating element made, for example, of steel, which can be, for example, a plunger. The aluminum bore can be understood in particular as a through opening which extends within a component made of aluminum.

For example, by means of the throttle device according to the invention, the oil flow of the oil flowing through the line element can be made possible at low or particularly low temperatures, in particular of the oil, in particular the throttle device cannot be influenced or limited, and at particularly high temperatures or temperatures higher than the low temperatures and / or be limited if the game is particularly large. This can be achieved, for example, by the fact that at the particularly low temperatures it is not the throttle device that can be a limiting element for the oil flow, but rather, for example, the actuating element, in particular the tappet. Thus, for example, the lubrication of the partial area, in particular the bearing point, referred to in particular as oil lubrication, and / or the wetting of the spring element can be made possible at low temperatures, but the special The high flow rates can be limited at high temperatures and large games. This means that the oil flow can be limited, for example during hot idling, and yet lubrication of the partial area, in particular of the actuating element and/or oiling of the spring element, for example as corrosion protection, can be made possible at the low temperature.

In a further embodiment, the throttle device has a contact area via which the throttle device can be placed or applied to a wall of the line element, in particular directly, when arranged in the line element. In other words, the throttle device can be supported or is supported over the contact area, in particular in the radial direction of the throttle device, in particular the length areas, when arranged in the line element on the wall of the line element. This means that the throttle device is placed or supported via the contact area on the wall of the line element when the throttle device is in its installation position in the line element provided in the internal combustion engine. As a result, the throttle device can be arranged or held particularly securely in the line element. This allows the oil flow of the oil flowing through the line element to be particularly reliably limited. For example, the contact area is designed as an outside or outer surface of the throttle device that faces outwards in the radial direction of the throttle device. The outside or the outer surface can be understood in particular as an outer lateral surface of the throttle device.

It is preferably provided that the transition region is designed as a diaphragm through which the oil can flow. In other words, when the oil flowing from the first length region over the transition region into the second length region flows, an orifice flow of the oil flowing through the transition region can be brought about or is effected in the transition region. Thus, for example, a particularly strong cross-sectional change or cross-sectional narrowing, in particular from the first cross-section to the second cross-section, can be brought about by means of the aperture. As a result, particularly high turbulence or particularly high turbulence can be caused when flow through the throttle device, in particular the orifice. This allows, for example, a flow separation of the oil flowing through the throttle device, in particular the length regions or the transition region, to be kept particularly low, in particular on a wall region of the throttle device, in particular of the first and/or the second line element and/or the transition region. In particular, a dead water area can be created. As a result, for example, friction losses when the oil flows through the throttle device can be kept particularly low. This means, for example, that no pipe friction occurs or that it can be kept particularly low. This allows the oil to flow through the throttle device particularly efficiently. This allows the lubrication of the internal combustion engine to be particularly improved.

A second aspect of the invention relates to an arrangement of a throttle device, in particular according to the first aspect of the invention, for, in particular targeted, limiting, in particular adjusting, an oil flow provided for the lubrication of at least a partial area of an internal combustion engine in a line element of the internal combustion engine through which oil can flow. Advantages and advantageous refinements of the first aspect of the invention are to be viewed as advantages and advantageous refinements of the second aspect of the invention and vice versa. The internal combustion engine is intended, for example, to drive a motor vehicle.

In the arrangement it is provided that the throttle device has a first length region through which oil can flow, a first length region through which oil can flow, which adjoins the first length region at least indirectly, in particular directly, in the flow direction of the oil flowing through the first length region and is fluidly connected to the first length region , second length range, which has a smaller cross section through which the oil can flow than the first length range. In addition, the throttle device has a transition region through which the oil can flow, via which the length regions are fluidly connected to one another, in particular directly. As a result, different construction variants of the internal combustion engine can be produced with particularly little effort and particularly in line with requirements.

The throttle device is preferably arranged in the line element which is formed separately from the throttle device and through which the oil can flow, in order to limit, in particular adjust, the oil flow of the oil flowing through the line element, in particular in a targeted manner.

In a further embodiment, it is provided that the line element is designed as a supply line through which the oil can flow. Before Preferably, there is at least one bearing point via the supply line, via which at least one actuating element that is movable between at least two positions relative to a cylinder head of the internal combustion engine, in particular translationally, for example drivable by a camshaft of the internal combustion engine, is held on the cylinder head, in particular at least indirectly or directly , with which oil flowing through the supply line for lubrication of the bearing point, and in particular for lubrication of the actuating element, can be supplied, in particular in order to limit, in particular adjust, the oil flow of the oil flowing through the supply line and intended for lubrication of the bearing point, in particular in a targeted manner. This can be understood in particular as follows: The internal combustion engine has, for example, the actuating element which is arranged at least indirectly or directly on or in the cylinder head, the actuating element being movable between the at least two positions relative to the cylinder head, in particular translationally and/or rotationally . The actuating element can be driven, for example, by the camshaft of the internal combustion engine. This means that the camshaft and the actuating element are mechanically coupled to one another, in particular at least indirectly or directly, in order to move the actuating element, in particular between the positions, for example from a first of the positions into the, by rotating the camshaft, in particular about a camshaft rotation axis second position. The actuating element is arranged in or on the cylinder head so that it can move relative to the cylinder head via the bearing point or at the bearing point. The term storage location can be understood in particular as a warehouse. This means that the actuating element is mounted via the bearing point or at the bearing point between the at least two positions relative to the cylinder head, in particular on the cylinder head. The oil flowing through the supply line can be supplied, in particular via the throttle device, for lubrication of the bearing point, in particular the actuating element. This means that the bearing point, and in particular the actuating element, can be supplied with the oil. Thus, the lubrication of the partial area or of the actuating element, in particular at particularly high oil temperatures, can be limited by means of the throttle device, and can be made possible or not limited in particular at particularly low oil temperatures.

For example, the supply line, in particular the throttle device, is arranged in a bearing block, in particular for supporting the camshaft, in particular on the cylinder head. This means that the supply line, in particular the throttle device, extends at least partially, in particular completely, within the bearing block. For example, the bearing block is a part, in particular a lower part in relation to the vertical direction of the internal combustion engine, of a camshaft bearing.

Alternatively or additionally, it is provided, for example, that via the supply line at least one spring element, which is held on the cylinder head and is movably held on the cylinder head between the at least two positions relative to the cylinder head of the internal combustion engine, in particular mechanically, for example directly, is coupled to the spring element with which the supply line, in particular the throttle device , can be wetted by oil flowing through it. In other words, the oil flowing through the supply line, in particular the throttle device, can be supplied to the spring element in order to wet the spring element with the oil. As a result, the spring element can be wetted with the oil particularly safely or particularly reliably, whereby, for example, the corrosion resistance of the spring element can be particularly increased. This means that, for example, damage or breakage of the spring element can be particularly reliably avoided. The spring element is designed, for example, as a restoring element for the actuating element, that is, for resetting the actuating element. This means that the actuating element can be moved from the first position to the second position, for example by the camshaft, in particular by rotating the camshaft, and the actuating element can be moved, in particular moved back, from the second position into the first position by means of the spring element.

In a further embodiment, it is provided that the actuating element is designed to actuate at least one pump element of the internal combustion engine. For example, by means of the pump element, a fuel of the internal combustion engine can be conveyed through at least one fuel line of the internal combustion engine through which the fuel can flow. In other words, by means of the pump element, for example, a pressure of the fuel flowing through the fuel line can be increased. Thus, the pressure of the fuel flowing through the fuel line can be set or compressed to a desired target pressure, for example, by means of the pump element, with the fuel increased or compressed to the target pressure, for example via an injector, in particular directly, into a combustion chamber of the version Internal combustion engine can be introduced, in particular injected. Thus, the actuating element can, for example, be lubricated particularly safely, whereby the actuation of the pump element, and in particular the introduction of the fuel into the combustion chamber, can be effected or produced particularly safely.

For example, the pump element is designed as a high-pressure pump (HDP) of the internal combustion engine. For example, the pump element is designed to increase the pressure of the fuel flowing through the fuel line by at least 50 bar, in particular at least 100 bar, 150 bar, 200 bar, 250 bar, 300 bar or 350 bar. For example, the spring element is arranged at least partially, in particular completely, within the pump element. In other words, the spring element is integrated in the pump element.

The fact that the actuating element is designed to actuate the pump element can be understood to mean, for example, that the conveying of the fuel through the fuel line, and in particular the compression or increase of the pressure of the fuel flowing through the fuel line, can be effected at least partially by the actuating element by means of the pump element , that is, can be brought about or is brought about by the actuating element as a result of the actuation of the pump element. In other words, the pump element for conveying the fuel through the fuel line, in particular for increasing the pressure of the fuel flowing through the fuel line, is coupled, in particular mechanically, to the camshaft via the actuating element. For example, the mechanical coupling can effect a working stroke of the pump element for conveying the fuel through the fuel line, in particular for increasing the pressure of the fuel. The pump element can therefore be driven by the camshaft, for example via the actuating element.

For example, the internal combustion engine has an intake tract through which air can flow and an exhaust tract through which exhaust gas from the internal combustion engine can flow. The air flowing through the intake tract can be supplied to the combustion chamber via the intake tract and can in particular be introduced into the combustion chamber. Combustion processes can take place in the combustion chamber, in which a fuel-air mixture is burned, resulting in the exhaust gas from the internal combustion engine. For example, the fuel-air mixture can be formed from the air introduced into the combustion chamber via the intake tract and the fuel introduced into the combustion chamber via the injector. The exhaust gas from the internal combustion engine can be removed from the combustion chamber via the exhaust tract.

In a further embodiment, it is provided that the pump element has at least one support device, via which the pump element is held at least indirectly, in particular directly, on the cylinder head. In other words, the pump element is attached to the cylinder head or in the cylinder head via the support device. Preferably, the throttle device is arranged within the support device or is arranged below the support device in the vertical direction of the internal combustion engine, in particular in the vertical direction of the motor vehicle. In other words, the throttle device extends at least partially within or in the carrying device. Alternatively or additionally, the throttle device extends in relation to the vertical direction of the internal combustion engine, in particular in relation to the vertical direction of the motor vehicle, at least in some areas, in particular completely, below the supporting device. As a result, for example, the installation space of the internal combustion engine can be designed particularly advantageously, in particular kept particularly small. Alternatively, the internal combustion engine can be lubricated particularly advantageously. Thus, for example, the supply line extends at least in some areas, in particular completely, within the support device and/or at least in some areas, in particular completely, in relation to the vertical direction of the internal combustion engine, below the support device.

In particular, if the bearing block is widened on one side, a bore can run within the bearing block, which can establish an oil supply connection to the supply line, which can run within the support device.

In a further embodiment, it is provided that the actuating element is designed as a tappet, in particular a roller tappet, which can be driven by the camshaft of the internal combustion engine. In other words, the actuating element is designed as a tappet coupled to the camshaft, in particular mechanically.

The tappet can therefore be actuated, for example, by the camshaft, whereby the tappet can be moved between the positions, in particular from the first position into the second position, in particular translationally. For example, the pump element can be actuated by the camshaft via the tappet. The pump element can be used via the plunger ment can be operated particularly safely or particularly reliably.

The roller tappet preferably has at least one roller via which the roller tappet can be coupled or is coupled, in particular mechanically, to the camshaft. For example, the roller can roll on a cam of the camshaft, in particular when the actuating element is actuated by the camshaft. As a result, for example, friction when actuating the actuating element or when moving the actuating element between the positions can be kept particularly low.

The third aspect of the invention relates to a modular system for producing at least two, in particular different, construction variants of an internal combustion engine for a motor vehicle. Advantages and advantageous embodiments of the first aspect and the second aspect of the invention are to be viewed as advantages and advantageous embodiments of the third aspect of the invention and vice versa.

The modular system has a cylinder head, in particular across construction variants, within which a line element through which oil can flow and provided for lubricating at least a partial area of the internal combustion engine extends at least in some areas, in particular completely.

In order to be able to produce different construction variants of the internal combustion engine, in particular the cylinder head, with particularly little effort and particularly in line with requirements, it is provided that the modular system has at least one throttle device, in particular construction variant-specific, according to the first aspect of the invention.

It is provided that the first construction variant has the cylinder head, in particular across construction variants, and the throttle device, which is arranged in the line element in the first construction variant. In other words, the cylinder head and the throttle device are provided in the first design variant. This means that the cylinder head and the throttle device are used in the first design variant.

In addition, it is provided that the second construction variant has the cylinder head, in particular across construction variants, and is free of the throttle device. This means that the second design variant does not have the throttle device. In other words, the cylinder head is provided in the second design variant, whereas the throttle device is not provided in the second design variant. This means that in the second design variant the cylinder head is used and the throttle device is not used.

The fact that the cylinder head is cross-design can be understood in particular to mean that both the first design variant and the second design variant have the same, in particular identical, cylinder head. The cylinder head in the first and second construction variants is therefore provided across construction variants. This means that the cylinder head can be used or is used for both the first design variant and the second design variant. In other words, in the fully manufactured state of the construction variants, the cylinder heads of the construction variants are the same, in particular of the same construction or identical.

The fact that the throttle device is specific to the construction variant or that the throttle device is used in the first construction variant can be understood in particular to mean that the throttle device is used in relation to the two construction variants exclusively in the first construction variant, but not in the second construction variant. This means that the second design variant is free of the throttle device. In other words, the throttle device is not provided in the second design variant.

In a further embodiment, it is provided that the line element is designed as a supply line through which the oil can flow, via which at least one bearing point, via which at least one actuating element which can be moved between at least two positions relative to a cylinder head of the internal combustion engine, is held on the cylinder head, with which the Oil flowing through the supply line can be supplied to lubricate the bearing point.

Alternatively or additionally, it is provided, for example, that the line element is designed as a supply line through which the oil can flow, via which at least one spring element, which is held on the cylinder head and is movably held on the cylinder head between at least two positions relative to a cylinder head of the internal combustion engine, is coupled to the oil flowing through the supply line is wettable.

For example, it is provided that the actuating element is designed to actuate at least one pump element of the internal combustion engine. This is the case, for example seen that the pump element has a support device, via which the pump element is at least indirectly held on the cylinder head.

For example, the supply line, in particular the throttle device, is arranged in a bearing block, in particular for supporting a camshaft of the internal combustion engine, in particular on the cylinder head. This means that the supply line, in particular the throttle device, extends at least partially, in particular completely, within the bearing block. For example, the bearing block is a part, in particular a lower part in relation to the vertical direction of the internal combustion engine, of a camshaft bearing. In particular, if the bearing block is widened on one side, a bore can run within the bearing block, which can establish an oil supply connection to the supply line, which can run within the support device. The bearing block can be referred to in particular as a camshaft bearing block.

For example, it is provided that the first construction variant has the oil supply connection. For example, a throttle device, in particular according to the first aspect of the invention, is arranged in the oil supply connection or inserted into the oil supply connection. For example, it is envisaged that the second design variant is free of the oil supply connection. This means that the oil supply connection can be omitted in the second design variant. This means that in the second design variant, for example, no passage of oil, in particular pressure oil, to the supply line in the support device is provided. The passage of oil can be understood in particular to mean a flow of oil.

Further features of the invention emerge from the claims, the figures and the description of the figures. The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and/or shown in the figures alone can be used not only in the combination specified in each case, but also in other combinations or on their own.

• 1 eine schematische Teilschnittansicht einer erfindungsgemäßen Anordnung einer erfindungsgemäßen Drosselvorrichtung in einem Leitungselement einer Verbrennungskraftmaschine; und
• 2 eine schematische Perspektivansicht einer erfindungsgemäßen Drosselvorrichtung; und
• 3 eine schematische und perspektivische Teilansicht einer erfindungsgemäßen Drosselvorrichtung; und
• 4 eine schematische Teilschnittansicht einer erfindungsgemäßen Drosselvorrichtung; und
• 5 eine schematische Perspektivansicht eines Lagerbocks einer Verbrennungskraftmaschine; und
• 6 eine schematische Teilschnittansicht einer erfindungsgemäßen Drosselvorrichtung gemäß einer weiteren Ausführungsform; und
• 7 eine schematische Detailansicht einer erfindungsgemäßen Drosselvorrichtung; und
• 8 eine schematische Darstellung zur Veranschaulichung eines erfindungsgemäßen Baukastensystems.

The invention will now be explained in more detail using a preferred exemplary embodiment and with reference to the drawings. Show it:

• 1 a schematic partial sectional view of an arrangement according to the invention of a throttle device according to the invention in a line element of an internal combustion engine; and
• 2 a schematic perspective view of a throttle device according to the invention; and
• 3 a schematic and perspective partial view of a throttle device according to the invention; and
• 4 a schematic partial sectional view of a throttle device according to the invention; and
• 5 a schematic perspective view of a bearing block of an internal combustion engine; and
• 6 a schematic partial sectional view of a throttle device according to the invention according to a further embodiment; and
• 7 a schematic detailed view of a throttle device according to the invention; and
• 8th a schematic representation to illustrate a modular system according to the invention.

In the figures, identical or functionally identical elements are provided with the same reference numerals.

1 shows a schematic partial sectional view of an arrangement of a throttle device 1 for limiting an oil flow 4 intended for lubricating at least a portion 2 of an internal combustion engine 3 in a line element 5 of the internal combustion engine 3 through which oil can flow. The internal combustion engine 3 is intended, for example, for driving a motor vehicle. The line element 5 is preferably arranged in a cylinder head 6 of the internal combustion engine 3. This means that the line element 5 extends at least partially, in particular completely, within the cylinder head 6. Thus is in 1 in particular a schematic partial sectional view of the internal combustion engine 3 or the cylinder head 6 is shown.

2 shows the throttle device 1 in a schematic perspective view. 3 shows the throttle device 1 in a schematic and perspective partial view. 4 shows the throttle device 1 in a schematic partial sectional view. For example, the throttle device 1 has a line section 7 through which the oil can flow. The line section 7 is, for example, at least partially, in particular completely, delimited by at least one wall region 9 of the throttle device 1, in particular in the radial direction 8 of the throttle device 1. The wall area 9 is designed, for example, as an internal or inwardly directed lateral surface of the throttle device 1. The line section 7 can be flowed through by the oil, for example in the axial direction 10 of the throttle device 1.

The throttle device 1, in particular the line section 7, has a first length region 11 through which the oil can flow and a first length region 11 through which the oil can flow, in the flow direction 12 of the oil flowing through the first length region or the throttle device 1, in particular the line section 7, at least indirectly, in particular directly, adjoining the first length range 11 and fluidly connected to the first length range, in particular at least indirectly, second length range 13. Thus, the length regions 11, 13, for example, in particular in the radial direction 8 of the throttle device 1, are at least partially, in particular completely, limited by the wall region 9. For example, the line section 7, in particular the first and/or the second length range 11, 13, is at least predominantly, in particular completely circumferentially, limited in the circumferential direction of the throttle device 1.

The first length region 11 has a first cross section 14 through which the oil can flow. The second length region 13 has a second cross section 15 through which the oil can flow. The second cross section 15 is smaller than the first cross section 14. The second length region 13 therefore has a smaller cross section 15 through which the oil can flow than the first length region 11.

The throttle device 1, in particular the line section 7, has a transition region 16 through which the oil can flow, via which the length regions 11, 13 are fluidly, in particular directly, connected to one another.

In order to be able to produce different construction variants 17, 18 of the internal combustion engine 3 with particularly little effort and particularly in line with requirements, it is provided that the throttle device 1 can be arranged or is arranged in the line element 5, which is designed separately from the throttle device 1 and through which the oil can flow, in order to control the oil flow 4 of the oil flowing through the line element 5, in particular in a targeted manner.

This can be understood in particular as follows: For example, the line element 5 has a first partial region 19 through which the oil can flow. The first subregion 19 is, for example, a receiving space in which the throttle device 1 can be arranged or is arranged. The receiving space is, for example, at least partially, in particular completely, delimited by a wall 20 of the line element 5. For example, the line element 5 has a second portion 21 arranged upstream of the first portion 19 in the flow direction of the oil flowing through the line element 5. For example, the line element 5 has a third portion 22 arranged downstream of the first and second portions 19, 21 in the flow direction of the oil flowing through the line element. The oil can preferably flow through the second and third subregions 21, 22. Thus, for example, the oil flowing through the second subregion 21 can be removed from the second subregion 21 and introduced into the throttle device 1, in particular into the line section 7, for example into the first length region 11. As a result, the oil can flow through the throttle device 1, in particular the line section 7, for example the first and/or the second length region 11, 13 and/or the transition region 16. The oil thus flows through the first subregion 19 indirectly, in particular without the oil touching the wall 20 in the first subregion 19, since the throttle device 1 is arranged in the first subregion 19. For example, the oil flowing through the throttle device 1, in particular the line section 7, can be removed from the throttle device 1, in particular via the line section 7, via the second length region 13 and introduced into the third sub-region 22. Thus, the oil flowing through the first subregion 21 can be introduced into the third subregion 22 via the throttle device 1, with the oil flow 4 of the oil flowing from the first subregion 21 into the third subregion 22 being limited or limited by means of the throttling device 1 through which the oil flows . The respective partial area 19, 21, 22 can be understood to mean, in particular, a respective length area of the line element 5.

It is preferably provided that the throttle device 1 has a contact area 23, over which the throttle device 1 is arranged when arranged in the line element 5, that is, in particular when the throttle device 1 is arranged in the line element 5, in particular in the first partial area 19 Wall 20 of the line element 5 can be applied or is created.

It is preferably provided that the transition region 16 is designed as a diaphragm 24 through which the oil can flow. The throttle device 1 can therefore be understood to mean, in particular, an aperture. For example, the second length region 13 is designed as a through opening through which the oil can flow, in particular an outlet opening, through which the throttle flows Direction 1, in particular the line section 7, for example the first length region 11 and / or the transition regions 16, oil flowing through can be removed from the throttle device 1, and can be introduced, for example, into the third portion 22 of the line element 5. The through opening can in particular be referred to as a throttle bore. For example, the through opening is arranged on an end face of the throttle device 1.

For example, the internal combustion engine 3 has at least one camshaft 25 that can be rotated about an axis of rotation, in particular relative to the cylinder head 6. The camshaft 25 is preferably intended for actuating valves, in particular intake valves and/or exhaust valves, of the internal combustion engine 3. For example, the internal combustion engine 3 has at least one bearing point 26, via which at least one actuating element 27, which can be moved between at least two positions relative to the cylinder head 6, in particular translationally, is held on the cylinder head 6. The actuating element 27 is coupled, for example, mechanically, to the camshaft 25 via a cam 28 of the camshaft 25. As a result, the actuating element 27 can be driven by the camshaft 25, for example via the cam 28, and can therefore be moved between the positions, for example from a first of the positions into the second position, in particular translationally. The actuating element 27 is designed, for example, as a tappet 29, in particular a roller tappet, which can be driven by the camshaft 25, in particular via the cam 28, of the internal combustion engine 3.

For example, at least one spring element 30 is mechanically coupled to the actuating element 27. By means of the spring element 30, the actuating element 27 can be moved, for example, from the second position into the first position, in particular can be moved back. The spring element 30 is therefore, for example, a restoring element. The spring element 30 is designed, for example, as a mechanical spring.

The internal combustion engine 3 preferably has at least one combustion chamber in which, particularly in a fired operation of the internal combustion engine 3, combustion processes take place in which a fuel-air mixture is burned. For example, the internal combustion engine 3 has at least one fuel line through which fuel from the internal combustion engine 3 can flow. For example, the fuel flowing through the fuel line can be introduced, in particular injected, into the combustion chamber of the internal combustion engine via at least one injector.

The internal combustion engine 3 preferably has at least one pump element, which is preferably designed to convey the fuel through the fuel line. Thus, by means of the pump element 31, for example, a pressure of the fuel, referred to in particular as injection, can be provided in order to introduce, in particular inject, the fuel, in particular via the injector, into the combustion chamber at the injection pressure. The pump element 31 is designed, for example, as a high-pressure pump. The pump element 31 is preferably arranged above the camshaft 25 in the vertical direction 32 of the internal combustion engine 3, in particular of the motor vehicle.

The actuating element 27 is preferably designed to actuate the pump element 31. This means that the pump element 31 can be actuated, in particular driven, by the camshaft 25, for example via the actuating element 27.

In a further embodiment, it is provided that the line element 5 is designed as a supply line 33, in particular an oil supply bore, through which the oil can flow.

Preferably, it is provided that the bearing point 26 can be supplied via the supply line 33 with the oil flowing through the supply line 33 for lubrication of the bearing point 26, and in particular for lubricating the actuating element 27, in particular directly. For example, a roller of the roller tappet can be supplied with the oil flowing through the supply line 33 via the supply line 33. It can therefore be seen overall that the line element 5, in particular the throttle device 1, can be provided for supplying the actuating element 27, and in particular the roller, with oil.

Alternatively or additionally, it is provided, for example, that the spring element 30 can be wetted or oiled, in particular directly, via the supply line 33 with the oil flowing through the supply line 33. The partial area 2 can therefore be, for example, an area of the internal combustion engine 3, in particular the cylinder head 6, with the actuating element 27 and/or the spring element 30 being arranged in the area.

In a further embodiment, it is provided that the pump element 31 has at least one support device 34, via which the pump element 31 is held at least indirectly, in particular directly, on the cylinder head 6, in particular on a component of the cylinder head 6 which is designed separately from the pump element 31. As in 1 shown, the throttle device 1 is arranged, for example, in the vertical direction 32 of the internal combustion engine 3, in particular of the motor vehicle, below the support device 34.

5 shows a schematic perspective view of a bearing block 42, in particular a camshaft bearing or for the camshaft bearing. The bearing block 42 is preferably part of the internal combustion engine 3, in particular the cylinder head 6. A connecting bore 43 can be arranged in the bearing block 42. The connecting bore 43 can preferably be flowed through by the oil. For example, the supply line 33, which extends at least partially within the support device 34, can be supplied with the oil via the connecting bore 43.

For example, the throttle device 1 is arranged in the connecting bore 43. The line element 5 can therefore be, for example, an oil supply hole in the bearing block. Alternatively or additionally, the throttle device 1 is arranged, for example, in the support device 34, which can be referred to in particular as a high-pressure pump support (HDP support). The line element 5 can therefore be designed, for example, as an oil supply hole in the support device 34.

For example, the first cross section 14 has a diameter of 2.2 millimeters. For example, the second cross section 15 has a diameter of 0.7 millimeters. For example, the contact area 23 has a diameter 35, which is, for example, 3.4 millimeters. For example, the throttle device 1 has the diameter 35 at one end and a second diameter 36 that is different from the diameter 35 at the other end. The respective diameter 35, 36 can be understood in particular to mean a respective outer diameter of the throttle device 1. The second diameter 36 is, for example, 3.5 millimeters, although an additional coverage of, for example, 20 to 30 micrometers can be provided. The second diameter 36 extends, for example, over a length 37, which is, for example, three millimeters. A total length of the throttle device 1 running in the axial direction 10 of the throttle device 1 is, for example, eleven millimeters. For example, a radius 38 is provided, which is, for example, 0.4 millimeters.

6 shows the throttle device 1 in a schematic partial sectional view according to a further embodiment. In the 6 The embodiment shown differs from that in particular in the design of the transition region 16 4 embodiment shown. This is at the in 6 In the embodiment shown, a sharper or more abrupt transition from the first cross section 14 to the second cross section 15 is brought about or can be brought about by the transition region 16. For example, a portion of the transition region 16 has a diameter 39, which is, for example, two millimeters. For example, a phase 40 is provided, the length of which is, for example, 0.5 millimeters.

7 shows a detailed view of the throttle device 1 according to FIG. 1 in a schematic partial sectional view 6 embodiment shown.

8th shows a schematic representation to illustrate a modular system 41 for producing at least two, in particular different, construction variants 17, 18 of the internal combustion engine 3 for a motor vehicle. The modular system 41 has a cylinder head 6, in particular across construction variants, within which the line element 5, through which oil can flow and provided for lubricating at least the partial area 2 of the internal combustion engine 3, extends at least in some areas, in particular completely.

In order to be able to produce the different construction variants 17, 18 in a particularly low-cost and particularly needs-based manner, it is provided that the modular system 41 has the throttle device 1, in particular the construction variant-specific one. The first construction variant 17 has the cylinder head 6 and the throttle device 1, which in the first construction variant 17 is arranged in the line element 5. The second design variant 18 has the cylinder head 6 and is free of the throttle device 1.

For example, the bearing block 42 in the first construction variant 17 has the connecting bore 43. The connecting bore 43 is arranged or set, for example, on a bench designated in particular as bench two. For example, the bearing block 42 in the second design variant 18 is free of the connecting bore 43.

Reference symbol list

1

Throttle device

2

Sub-area

3

Internal combustion engine

4

Oil flow

5

Line element

6

cylinder head

7

line route

8th

radial direction

9

Wall area

10

axial direction

11

first length range

12

Direction of flow

13

second length range

14

first cross section

15

second cross section

16

Transition area

17

first construction variant

18

second construction variant

19

first section

20

wall

21

second section

22

third section

23

Investment area

24

cover

25

camshaft

26

Storage location

27

Actuator

28

cam

29

Pestle

30

Spring element

31

pump element

32

High direction

33

supply line

34

Carrying device

35

diameter

36

second diameter

37

length

38

radius

39

diameter

40

phase

41

Modular system

42

bearing block

43

connection hole

Claims (10)

Throttle device (1) for limiting an oil flow (4) intended for lubricating at least a partial region (2) of an internal combustion engine (3) in a line element (5) of the internal combustion engine (3) through which oil can flow, with a first length region (11) through which oil can flow ), with a second length region (13) through which the oil can flow, in the flow direction (12) of the oil flowing through the first length region (11), at least indirectly adjoining the first length region (11) and fluidly connected to the first length region (11). which has a smaller cross section (15) through which the oil can flow than the first length region (11), with a transition region (16) through which the oil can flow, via which the length regions (11, 13) are fluidly connected to one another, the throttle device ( 1) can be arranged in the line element (5), which is designed separately from the throttle device (1) and through which the oil can flow, in order to limit the oil flow (4) of the oil flowing through the line element (5). Throttle device (1). Claim 1 , characterized by a contact area (23), via which the throttle device (1) can be placed against a wall (20) of the line element (5) when it is arranged in the line element (5). Throttle device (1). Claim 1 or 2 , characterized in that the transition region (16) is designed as a diaphragm (24) through which the oil can flow. Arrangement of a throttle device (1) for limiting an oil flow (4) intended for lubricating at least a partial area (2) of an internal combustion engine (3) in a line element (5) of the internal combustion engine (3) through which oil can flow, in which the throttle device (1). first length region (11) through which oil can flow, a first length region (11) through which the oil can flow, which adjoins the first length region (11) at least indirectly in the flow direction (12) of the oil flowing through the first length region (11) and is fluidly connected to the first length region (11). connected, second length region (13), which has a smaller cross section (15) through which the oil can flow than the first length region (11), and has a transition region (16) through which the oil can flow, over which the length regions (11, 13) fluidly are connected to each other. Arrangement according to Claim 4 , characterized in that the line element (5) is designed as a supply line (33) through which the oil can flow, via which at least one bearing point (26), via which at least one between at least two positions relative to a cylinder head (6) of the internal combustion engine (3 ) movable actuating element (27) is held on the cylinder head (6), with which the oil flowing through the supply line (33) can be supplied to lubricate the bearing point (26). Arrangement according to Claim 4 or 5 , characterized in that the line element (5) is designed as a supply line (33) through which the oil can flow, via which at least one can be moved between at least two positions relative to a cylinder head (6) of the internal combustion engine (3) on the cylinder head (6 ) held actuating element (27) coupled spring element (30) with which the oil flowing through the supply line (33) can be wetted. Arrangement according to Claim 5 or 6 , characterized in that the actuating element (27) is designed to actuate at least one pump element (31) of the internal combustion engine (3). Arrangement according to Claim 7 , characterized in that the pump element (31) has a support device (34) via which the pump element (31) is at least indirectly held on the cylinder head (6), the throttle device (1) within or in the vertical direction (32) of the internal combustion engine (3) is arranged below the carrying device (34). Arrangement according to one of the Claims 5 until 8th , characterized in that the actuating element (27) is designed as a tappet (29) which can be driven by a camshaft (25) of the internal combustion engine (3). Modular system (41) for producing at least two construction variants (17, 18) of an internal combustion engine (3) for a motor vehicle, with a cylinder head (6), within which there is a cylinder head (6) through which oil can flow and for lubricating at least a partial area (2) of the internal combustion engine ( 3) provided line element (5) extends at least in some areas, and with at least one throttle device (1) according to one of Claims 1 until 3 , wherein • the first construction variant (17) has the cylinder head (6) and the throttle device (1), which in the first construction variant (17) is arranged in the line element (5), and • the second construction variant (18) has the cylinder head ( 6) and is free of the throttle device (1).

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