BE1027195B1 - PRESSURE MEASURING DEVICE - Google Patents

Abstract

The invention relates to a pressure measurement kit. This kit is equipped with a computer and a pressure sensor. This kit is also composed of several connectors, one end of each connector being designed to cooperate with said pressure sensor, an opposite end being respectively specific to the type of measurement to be carried out. Thus, a single pressure sensor is sufficient, to which different nozzles can be connected depending on the type of measurement to be carried out, or even on the type of engine on which the measurements are made.

Description

FIELD OF THE INVENTION The invention relates to the field of fluid pressure measuring devices.

More particularly, the invention relates to a kit for measuring fluidic pressures present in a motor vehicle and more particularly in its powertrain.

STATE OF THE ART It is necessary to be able to measure different types of fluidic pressure in a power train: oil pressure, pressure of the coolant, fuel pressure, pressure of a fuel additive, etc. The pressure may also need to be measured at the cylinders of an internal combustion engine to determine the presence of leaks.

Typically, the pressure, whether exerted by a liquid or a gas, is measured using a manometer, the tube of which is inserted into the cavity where the pressure is to be measured.

Another way to do this is to use a pressure sensor connected to a computer, able to convert the electrical signal from the pressure sensor into a pressure value.

This pressure sensor is specific to the type of measurement to be performed, as well as the type of power train on which the measurement is performed.

It is therefore necessary to have several pressure sensors depending on the measurement to be made.

Summary of the invention An object of the invention is to remedy the need to use multiple pressure sensors depending on the measurements to be performed.

The invention is defined by the independent claims.

The dependent claims define preferred embodiments of the invention.

According to the invention, there is provided a pressure measurement kit comprising a pressure sensor comprising a pressure inlet provided with a first fluidic coupling and an outlet delivering an electrical signal which is a function of a fluidic pressure. applied to the pressure input, a computer configured to receive said electrical signal from the pressure sensor, and to determine a pressure corresponding to the value of said electrical signal, characterized in that the kit further comprises a first plurality of fluidic conduits dis - Tinctive, each fluidic pipe of the first plurality of fluidic pipes being provided at one end with a second fluidic coupler able to cooperate with the first fluidic coupler and being provided at at least one other end with a third fluidic coupler, at least two of the third fluidic couplers of the first plurality of fluidic conduits being different from each other.

The first plurality of distinct fluidic conduits in fact make it possible to connect the pressure sensor to different locations of the motor-driven unit, depending on the type of pressure to be measured. This provides a typical fluidic line for each of the measurements of interest. This makes it possible to use only one pressure sensor regardless of the measurement to be made, using the appropriate fluidic pipe. More preferably, the third fluidic coupler is designed to be connected to a powertrain of a motor vehicle, said engine possibly being for example an internal combustion engine. Preferably, the third fluidic coupler is designed to be connected to a cooling system, or to a lubrication system or to a fuel supply system of the internal combustion engine.

Preferably, the pressure measurement kit according to the invention further comprises a second plurality of fluidic conduits, each fluidic conduit of the second plurality of fluidic conduits being provided at one end with a fourth fluidic coupler able to cooperate with the third. fluidic coupler of at least one fluidic conduit of the first plurality of fluidic conduits, and being provided at at least one other end with a fifth fluidic coupler, at least two of the fifth fluidic couplers of the second plurality of conduits fluidics being different from each other. The second plurality of separate fluidic conduits allow the pressure sensor to be connected, via the first plurality of fluidic conduits, to different locations of the power train, depending on the type of pressure to be measured. The second plurality of fluidic conduits makes it possible to adapt the first plurality of fluidic conduits, for example, to the type of engine used (gasoline engine or diesel engine for example). Preferably, the fifth fluidic coupler is designed to be connected to a powertrain of a motor vehicle, said engine possibly being an internal combustion engine. Preferably, the fifth fluidic coupler is designed to be connected to a cooling system, or to a lubrication system or to a fuel supply system of the internal combustion engine. In all cases, the pressure sensor is able to evaluate a relative pressure preferably between -1x10 ° Pa and 3x10 ° Pa, or between 0 (zero) Pa and 3x107 Pa.

Brief description of the figures These and other aspects of the invention will be clarified in the detailed description of particular embodiments of the invention, with reference being made to the drawings of the figures, in which: Fig. 1 shows schematically an example of a fluidic pressure measurement kit according to the invention;

Fig.2 schematically shows an example of a pressure measurement kit according to a preferred version of the invention. Fig.3 shows schematically an example of a pressure measurement kit when it is connected to an internal combustion engine.

Fig. 4 schematically shows an example of a preferred version of a pressure measurement kit when plugged into an internal combustion engine.

The drawings of the figures are neither to scale nor proportionate. Generally, similar or identical elements are denoted by like references in the figures.

Detailed description of embodiments of the invention Fig. 1 schematically shows an example of a fluid pressure measurement kit according to the invention. The term fluidic indicates that the kit (1) is suitable for measuring both a pressure exerted by a liquid and a pressure exerted by a gas.

The kit (1) includes a pressure sensor (10). This sensor (10) comprises a pressure inlet provided with a first fluidic coupler (100). A fluidic coupler is a device with which it is possible to connect, mechanically and fluidly, two fluidic circuits, that is to say a connection / disconnection system for the fluidic conduits. Couplers are used in particular on hydraulic or pneumatic equipment. The couplers are then attached to the end of the pipes and allow different types of equipment to be connected quickly and easily. These couplers are generally used in places where tools are changed frequently. Couplers are supplied in a wide variety of sizes, gaskets, connections, thread sizes, classes and materials.

The sensor (10) also includes an output configured to deliver an electrical signal as a function of the fluid pressure applied to the pressure input.

if we. The pressure sensor (10) is therefore for example a device configured to convert the pressure variations at its input into variations of an electrical signal at its output. Such pressure sensors are commonly available commercially. They may for example be piezoresistive, capacitive, electromagnetic, optical, etc. sensors. They can be absolute or relative pressure sensors. These can be sensors providing an analog or digital signal. The kit (1) also includes a computer (2) to which the pressure sensor can be connected. The computer is configured to determine a pressure corresponding to the value of the electrical signal delivered by the pressure sensor and possibly to display this pressure on a screen. Such computers are also widely available commercially.

The kit (1) also includes a first plurality of separate fluid lines (20, 21, 22). Each of these fluidic conduits (20, 21, 22) is provided at one end with a second fluidic coupler (200) able to cooperate with the first fluidic coupler (100) of the pressure sensor (10). The fluid lines (20, 21, 22) are shown in number of three in Fig. 1, but the kit (1) may only have two. Kit (1) can also include more than three.

The second fluidic coupler (200) is also a device with which it is possible to connect, mechanically and fluidly, two fluid circuits, ie a connection / disconnection system for the fluid pipelines. Together with the first fluidic coupler (100), they make it possible to connect a fluidic line from the first plurality of separate fluidic lines (20, 21, 22) to the pressure sensor (10).

Each of these fluidic conduits (20, 21, 22) is also provided at at least one other end with a third fluidic coupler (300, 310, 320). These third fluidic couplers (300, 310, 320) can take several forms depending on the type of measurement to be performed, at least two of which are different from each other. The shape of these third fluidic couplers (300, 310, 320) is designed to allow them to be connected, for example, to a powertrain of a motor vehicle. The motor vehicle may be, for example, a car, a van, a truck, a motorcycle, a motorcycle, a boat or even a train. The motor of the motor vehicle may be an internal combustion engine.

In the event that the power train has an internal combustion engine, the shape of the third fluid couplers (300, 310, 320) is preferably designed to allow them to be connected to a cooling system, or to a system. lubrication system or to an engine fuel supply system. The kit (1) then makes it possible to determine the pressure of the coolant, the pressure of the lubricant or the pressure of the fuel in the tank.

Preferably, the kit (1) can also make it possible to measure a vacuum, such as for example an air vacuum. Thus, the kit (1) is used to measure the pressure in an air circuit, which is used, for example, to supply the turbo-compressor circuit, or even which makes it possible to control the central locking of the doors of the motor vehicle. .

Preferably, the kit (1) can also make it possible to measure a leak in a cylinder of an internal combustion engine (cylinder leakage test). In the case of a gasoline engine, the kit (1) is connected to the engine instead of a spark plug. Compressed air is then sent. The difference between the injected air pressure and the measurement made at the engine level then makes it possible to determine whether there is a leak.

Preferably, the kit (1) can still make it possible to measure the pressure in the circuit of an additive to the fuel of an internal combustion engine. The kit (1) is then connected to the additive tank in order to measure the pressure. It can be, for example, an additive such as' AUS32 (AD Blue). FIG. 2 schematically shows an example of a fluidic pressure measurement kit according to a preferred version of the invention. The kit (1) of this preferred version is identical to that described above and further comprises a second plurality of fluidic conduits (30, 31). Each fluidic conduit (30, 31) of the second plurality of fluidic conduits is provided at one end with a fourth fluidic coupler (400) adapted to cooperate with the third fluidic coupler (300) of a fluidic conduit (20) of the first plurality of fluidic conduits.

In the example of Fig. 2, a single fluid line (20) of the first plurality of fluid lines is shown for clarity. However, the kit (1) may include more than one fluidic line (20) of the first plurality of fluidic lines.

Each of the fluidic conduits (30, 31) of the second plurality of fluidic conduits is also provided at at least one other end with a fifth fluidic coupler (500, 510). These fifth fluidic couplers (500, 510) can take several forms depending on the type of measurement to be performed, at least two of which are different from each other.

The shape of these fifth fluid couplers (500, 510) is designed to allow them to be connected to a powertrain of an automotive vehicle. The motor vehicle can be, for example, a car, a van, a truck, a motorbike, a motorbike, a boat or even a train. The motor of the motor vehicle may be an internal combustion engine.

In the case of an internal combustion engine, the shape of the fifth fluidic couplers (500, 510) is designed to enable them to be connected to a cooling system, or to a lubrication system, or to an oil system. 'fuel supply to the engine.

The shape of these fifth fluid couplers (500, 510) can also allow them to be connected to different types of motors.

Thus, the fluidic coupler (500) is for example designed to be connected to a gasoline engine, while the fluidic coupler (510) is designed to be connected to a diesel engine.

Or the fluidic coupler (500) is for example designed to be connected to a gasoline engine instead of a spark plug of a certain diameter, while the fluidic coupler (510) is designed to be connected to the gasoline engine. place a candle of another diameter.

Or the fluidic coupler (500) is for example designed to be connected to a diesel engine at one type of injector, while the fluidic coupler (510) is designed to be connected to another type of injector.

The fluidic conduits (30, 31) of the second plurality of fluidic conduits therefore play the role of adapters on the fluidic conduits (20, 21, 22) of the first plurality of fluidic conduits allowing them to be connected to one. engine depending on the engine type.

Fig. 3 schematically illustrates an example of a pressure measurement kit (1) when it is connected to an internal combustion engine (4). A fluidic line (20) of the first plurality of fluidic lines is then connected to the pressure sensor (10) via the first and second fluidic couplers (100 and 200) connected to each other.

The third fluidic coupler (300) of the fluidic line (20) is connected to the internal combustion motor (4) in order to perform the measurement.

The dotted lines represent the fluidic connection between the pressure sensor (10) and the fluidic line (20) of the first plurality of fluidic lines, via the first and second fluidic couplers (100 and 200) connected to each other. the other.

These lines also represent the fluidic connection between the fluidic line (20) of the first plurality of fluidic lines and the internal combustion engine (4), via the third fluidic coupler (300).

These dotted lines therefore reflect the fluid circuit between the pressure sensor (10) and the internal combustion engine (4). Fig. 4 schematically shows an example of a preferred version of the pressure measurement kit (1) when connected to an internal combustion engine (4). A fluidic line (20) of the first plurality of fluidic lines is connected to the pressure sensor (10) via the first and second fluidic couplers (100 and 200) connected to each other.

A fluidic line (30) of the second plurality of fluidic lines is connected to the fluidic line (20) of the first plurality of fluidic lines via the third and fourth fluidic couplers (300 and 400) connected to each other. other.

The fifth fluidic coupler (500) of the fluidic line (30) is connected to the internal combustion engine (4) in order to perform the measurement.

The dotted lines represent the fluidic connection between the pressure sensor (10) and the fluidic line (20) of the first plurality of fluidic lines, via the first and second fluidic couplers (100 and 200) connected to each other. the other.

These lines also represent the fluidic connection between the fluidic line (20) of the first plurality of fluidic lines and the fluidic line (30) of the second plurality of fluidic lines, via the third and fourth fluidic couplers (300 and 400) connected. 'to one another.

These lines also represent the fluidic connection between the fluidic line (30) of the second plurality of fluidic lines and the internal combustion engine (4), via the fifth fluidic coupler (500). These dotted lines therefore reflect the fluid circuit between the pressure sensor (10) and the internal combustion engine (4). In a preferred version of the invention, the pressure sensor is able to assess a relative pressure preferably between -1x10 ° Pa and 3x10 ° Pa, or between 0 (zero) Pa and 3x107 Pa.

The range indicated does not necessarily imply

the use of a relative pressure sensor. An absolute pressure sensor can also cover such a range. The present invention has been described in relation to specific embodiments, which have a purely illustrative value and should not be considered as limiting. In general, it will be obvious to those skilled in the art that the present invention is not limited to the examples illustrated and / or described above. The presence of reference numbers in the drawings cannot be considered as limiting, including when these numbers are indicated in the claims.

The use of the verbs "to understand", "to include", "to include", or any other variant, as well as their conjugations, can in no way exclude the presence of elements other than those mentioned. The use of the indefinite article "a", "a", or of the definite article "the", "the" or "the", to introduce an element does not exclude the presence of a plurality of these elements.

The invention can also be described as follows: The invention relates to a pressure measurement kit. This kit is equipped with a computer and a pressure sensor. This kit is also composed of several connectors, one end of each connector being designed to cooperate with said pressure sensor, an opposite end being respectively specific to the type of measurement to be carried out. Thus, a single pressure sensor is sufficient, to which different nozzles can be connected depending on the type of measurement to be carried out, or even on the type of engine on which the measurements are carried out.

Claims (14)

Claims 1. Pressure measurement kit (1) comprising: - a pressure sensor (10) comprising a pressure inlet provided with a first fluidic coupler (100) and an output delivering an electrical signal which is a function of a fluidic pressure applied to the pressure input, - a computer (2) configured to receive said electrical signal from the pressure sensor (10), and to determine a pressure corresponding to the value of said electrical signal, characterized in that the kit ( 1) further comprises a first plurality of separate fluidic conduits (20, 21, 22), each fluidic conduit (20, 21, 22) of the first plurality of fluidic conduits being provided at one end with a second fluidic coupler (200 ) adapted to cooperate with the first fluidic coupler (100) and being provided at at least one other end with a third fluidic coupler (300, 310, 320), at least two of the third fluidic couplers (300, 310, 320 ) of the first plurality of pipes flui dics (20, 21, 22) being different from each other. 2. Pressure measurement kit (1) according to claim 1, characterized in that the third fluidic coupler (300, 310, 320) is designed to be connected to a powertrain of a motor vehicle; 3. Pressure measurement kit (1) according to claim 2, characterized in that said engine is an internal combustion engine (4); 4. Pressure measurement kit (1) according to claim 3, characterized in that the third fluidic coupler (300, 310, 320) is designed to be connected to a cooling system of the internal combustion engine (4). ; 5. Pressure measurement kit (1) according to claim 3, characterized in that the third fluidic coupler (300, 310, 320) is designed to be connected to a lubrication system of the internal combustion engine (4). ; 6. Pressure measurement kit (1) according to claim 3, characterized in that the third fluidic coupler (300, 310, 320) is designed to be connected to a fuel supply system of the internal combustion engine. - dull (4). 7. Pressure measurement kit (1) according to claim 1, characterized in that it further comprises a second plurality of fluidic conduits (30, 31), each fluidic conduit (30, 31) of the second plurality of con - fluidic pickups being provided at one end with a fourth fluidic coupler (400) able to cooperate with the third fluidic coupler (300) of at least one fluidic conduit (20, 21, 22) of the first plurality of con - fluidic picks, and being provided at at least one other end with a fifth fluidic coupler (500, 510), at least two of the fifth fluidic couplers (500, 510) of the second plurality of fluidic conduits (30 , 31) being different from each other. 8. Pressure measurement kit (1) according to claim 7, characterized in that the fifth fluidic coupler (500, 510) is designed to be connected to a powertrain of a motor vehicle; 9. Pressure measurement kit (1) according to claim 8, characterized in that said engine is an internal combustion engine (4); 10. Pressure measurement kit (1) according to claim 9, characterized in that the fifth fluidic coupler (500, 510) is designed to be connected to a cooling system of the internal combustion engine (4); 11. Pressure measurement kit (1) according to claim 9, characterized in that the fifth fluidic coupler (500, 510) is designed to be connected to the lubrication system of the internal combustion engine (4); 12. Pressure measurement kit (1) according to claim 9, characterized in that the fifth fluidic coupler (500, 510) is designed to be connected. tee to a fuel supply system of the internal combustion engine (4); 13. Pressure measurement kit (1) according to any one of the preceding claims, characterized in that the pressure sensor (10) is able to evaluate a relative pressure between -1x10 ° Pa and 3x10 ° Pa; 14. Pressure measurement kit (1) according to any one of the preceding claims, characterized in that the pressure sensor (10) is able to assess a relative pressure between O (zero) Pa and 3x107 Pa.