DE2512077A1 - COMMON DRAIN AND DEVICE FOR THE LUBRICATION SYSTEM OF AN ENGINE - Google Patents

Description

PATENT LAWYERS

MANITZ, FINSTERWALD & GRÄMKOW

F 2011 MARCH 18. 1975

FIAT-ALLIS CONSTRUCTION MACHINERY, INC.

Wilmot Road, Deerfield, Illinois / USA

Common drain and device for the lubrication system of an engine

The invention relates to a drainage system and apparatus for use with the lubrication system of an engine for a common drain of the crankcase pan and of the engine lubricating oil bypass filter in such a way that the impurities in the filter are mixed with the engine oil in the crankcase pan is avoided.

In the known arrangements for draining the bypass filter and the crankcase pan of an internal combustion engine, especially for engines used in road construction machines, agricultural vehicles, tractors and the like.

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are used, it is common practice to provide separate drainage systems for the filter and the oil pan. the The crankcase pan was drained by first removing an access panel attached to the crankcase cover was intended and is usually used on vehicles of the aforementioned type to prevent that stones or the like hit the crankcase and damage it. After removing the access panel the crankcase pan drain plug has been removed.

The maintenance person had to call in for this process of the machine are located in order to drain the crankcase so that it is often filled with oil during the crankcase draining process was splashed.

In previous practice for draining the lubricating oil filter If the sludge from the filter is drained directly from the drain cock of the filter, this collects in the lower protective cover of the machine and creates a fire hazard. So it became a loose tube intended for connection to the drain cock of the filter, to drain the sludge from the machine. This hose for draining the oil filter therefore had to previously when he was not in use, should be carried in the vehicle's toolbox because it was connected to the drain cock Hose there was a possibility that the maintenance person shed the closing of the filter drain cock »In this one Trap does not leak the oil out when the crankcase is first filled, however it will when the engine is first is started, all the oil in the crankcase is pumped out through the hose connection of the filter, which the Operator remains unknown until the engine becomes heavy

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Has suffered damage

The object of the invention is therefore to create a drain system for use with the lubrication system of an internal combustion engine or the like, which allows the crankcase sump and the lubricating oil bypass filter to be drained simultaneously through a common drain instead of using separate drain systems as before.

It is also part of the object of the invention to provide a common drain arrangement for the crankcase and for To create the lubricating oil bypass filter of the lubrication system of an internal combustion engine od, the like. In which draining the crankcase sump and bypass filter by removing a single plug in a collecting line can take place, which the drain systems of both the crankcase pan and the bypass filter is common.

It is also an object of the invention to provide a common drain assembly for use with the crankcase sump and the filter of the lubrication system of an internal combustion engine od, the like, to ensure that the filter drain is closed before the engine is started will.

It is also part of the object of the invention to provide a common To create a drain for an engine crankcase sump and for the engine lubricating oil bypass filter, which ensures that the impurities in the filter are not mixed with the engine oil in the crankcase pan.

It is also part of the object of the invention to provide a common drain for a motor crankcase housing and for the motor

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lubricating oil bypass filter of a vehicle, for example a road construction vehicle, an agricultural vehicle, a tractor or the like, to create, with the common drain in an easily accessible location on the engine crankcase protective cover as well is located in a location where all of the oil and sludge are drained out of the vehicle.

To achieve these goals, according to one embodiment the invention proposed a drainage system and a device for use with the lubrication system of an engine, according to which a common drain for the engine crankcase pan and the engine lubricating oil bypass filter is used in such a way that it is ensured that that there is no mixing of the impurities in the filter with the engine oil in the sump. The drainage system is special advantageous in connection with the engine lubrication system from Vehicles such as road construction vehicles, agricultural vehicles, tractors or the like. The common drain manifold, which is used in the aforementioned drain system, is preferably on the crankcase cover or on the "bellypan", which is usually provided on such vehicles in a place where the The engine crankcase pan and the lubricating oil bypass filter can be easily and simply drained at the same time and all oil and sludge is drained out of the vehicle.

The inventive solution to the problem is characterized in the claims and described with reference to the drawing; it demonstrate:

Fig. 1 in a schematic representation of the lubrication system of a Engine with a common drainage system and a device

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according to the »invention;

Fig. 2 is a sectional view showing the inventive Drain manifold and the connections of the filter and crankcase pan to the drain manifold shows, and

Fig. 3 is a view in section along the line III-III of Fig. 2.

1 shows an internal combustion engine 10 of any suitable type with a crankcase 12. The crankcase 12 has a sump or a pan for the lubricating oil L, which is intended to lubricate the engine. The engine 10 is suitably mounted on the chassis of a vehicle which, for example, is a road construction machine, an agricultural vehicle, a tractor or the like. Can be. The vehicle on which the engine 10 is mounted is, is provided with a crankcase cover or "belly pan", which is indicated generally at 14 and sbh is located below and at a distance from the crankcase 12 in a shielding and protective manner and serves to to prevent stones or the like from acting on the crankcase 12 and damaging it.

The crankcase cover 14 has a substantially horizontal protective part 16 from the opposite one Ends upwardly inclined protective parts 18 extend. The upper ends of the protective parts 18 are suitably attached oppositely arranged parts 20 of the main frame of the vehicle chassis attached.

The details of the lubrication circuit are not important to the invention. The lubrication circuit can have a pump P.

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an inlet or suction line 17 which sucks lubricating oil from the crankcase sump 12 into the pump, which then conveys the oil through an outlet line 19 which leads to the various distribution points on the engine 10 for whose lubrication leads. At least part of the oil flow which has passed through the various engine lubrication points, is via an inlet line 21 the inlet of the filter 5 2 supplied.

The filter 5 2 is a known bypass flow filter and is provided with a filter element or insert (not shown) within the filter housing 5 3. The oil to be filtered normally passes through the filter element. If the filter element is clogged, a spring-loaded bypass valve, which forms part of the filter, opens and allows oil to pass through the filter 52, bypassing the filter element or the filter element, the oil continuing to pass through the filter housing from its inlet to its outlet. The oil exits the filter 5 2 through an outlet line 23 and returns to the crankcase pan 12. The mud and _; other contaminants which do not adhere to the removable filter element in the housing of the filter 5 2 fall by their own weight to the lower end of the housing 53, from which they can be drained through the drain line 50 which is connected to the common drain manifold 22 which follows is described in more detail.

The common drain manifold of the present invention is indicated generally at 22 and is appropriately denoted by Screws 24 attached to a plate 26 which is connected to the inner surface of one of the upwardly sloping parts 18 of the Crankcase cover 16 welded or otherwise is attached to this. The plate 26 is on an opening 28 in the inclined part 18 of the crankcase cover

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Kung 16 arranged and in turn provided with an opening 30 to provide access to the removable drain plug, indicated generally at 32, the drain manifold 2 2, as described in more detail below.

The drain manifold, generally designated 2 2 has two sections, designated 22A and 22B. The manifold section 22A is through Screws 24 screwed to the plate 26, as before described. The manifold section 2 2B has a known, commercially available hose or hose Pipe connector, for example a connector with a split flange for four screws according to S.A.E, or the like., a tubular inlet fitting or collar 44, two flange sections 45A and 45B, and four cap screws 47, on. The collar 44 is provided with a countersunk opening 38A into which one end of a conduit 46 is inserted which is welded or soldered to the opening at 38. The covenant 44 is also at its subordinates provided with a groove 39 for receiving an O-ring 33 to provide a fluid-tight connection between the sections 22A and 22B. If preferred, another type of suitable seal can be used. The Confederation 44 is provided with an outer shoulder 44A which is attached to a inner recess 44B can be brought to bear in the flange sections. The flange sections 45A and 45B are provided with openings 47A for receiving the cap screws extending therethrough and threadedly engaged with tapped holes 47B in section 22A to have. The cap screws 47 secure the flange sections releasably at section 22A and push collar 44 toward section 22A to allow O-ring 33 to form a fluid-tight seal forms. The drain collection line 22 is provided with a common drain channel 34, which at one end

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at its countersunk opening 36A in end face 36 the collecting line opens, which rests on the opening 30 in the plate 26. The opposite end of the Drain channel 34 is in communication with line 46. A bore or a channel UO extends laterally from the outer surface 4 2 of the collecting line section 22A inwardly and in fluid communication with the common drain passage 34 midway along the length of the latter. the The longitudinal axis of the lateral bore 40 runs perpendicular to the longitudinal axis of the common drainage channel 34.

The inlet fitting 44 is via a line 46 with a drain outlet fitting 48 at the lower end of the Crankcase pan 12 connected. The lubricating oil L in the crankcase pan 12 is therefore in fluid communication with the drain channel 34 of the manifold 22 via the line and the drain connectors 44 and 4 8 on the manifold or brought on the crankcase.

Similarly, the outlet end of the side bore 40 is on the surface 4 2 of the manifold section 2 2A provided with an internal thread 41 for receiving a threaded connection piece 4 9 which is connected to a line 5 0 with the opposite end of the conduit connected to the lower through a suitable drain fitting End of the lubricating oil bypass filter is connected, which is generally designated 5 2. The inside of the filter 5 2 and the sludge and the deposits therein are therefore in fluid communication with the manifold 22 and with brought the common drain channel 34 of the manifold 22 through the line 50 and through the fittings, which connect the opposite ends of conduit 50 to manifold 2 2 and to filter 52.

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The drain plug, generally designated 3 2, is a a substantially solid or at least non-passageway element extending from the drain passage 34 of the drain manifold 22 is recorded. The drain passage 34 is at its opening near the surface 36 of the manifold section 22A is provided with an internal thread 37, while the plug 32 has an external thread 54 for thread engagement with the internal thread part 3 7 of the drainage channel 34 carries so that the plug 32 securely in its closed position can be secured within the drain passage 34, as shown in FIG. The outer end of the drain plug 32 is provided with a hexagonal head 56 to facilitate the setting of a suitable tool on the plug 3 2, if the plug is to be either inserted or removed. The end of the drain plug 32 just inside the Hexagonal head 5 6 is provided with a sealing washer 5 8, which is to be received in a tapered recess 60 is determined, which is provided at the point where the drain passage 34 in the recessed surface 36A merges at the outer end 36 of the collecting line 22. When the plug 32 is in the closed position shown in FIG is located, oil in the sump of crankcase 12 is prevented from exiting the manifold at surface 36A to flow so that the sludge from the filter 5 2 is also prevented from flowing to the outlet of the manifold.

The furthest inward end 6 2 of the drain plug 32, based on FIG. 2, is in the manifold section 22A a short distance outward from the interface between the manifold sections 22A and 22B. According to* An important feature of the design is the plug 3 2 at its end 6 2 with a countersunk annular groove 6 4, which receives a flexible sealing element in the form of an O-ring 66. The O-ring 66 lies against the adjacent inner surface of the common drainage channel 34 to provide an effective

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To form a seal that prevents fluids from passing in any direction past the O-ring. If the Drain plug 3 2 is fully seated in its closed position shown in FIG. 2, the O-ring is on one Place along the common drain passage 34 between the fluid connections of the filter 5 2 and the crankcase pan 12 with the common drainage channel 34 is located. This prevents the possibility of contaminants from flowing out of the Filter 5 2 get into the crankcase pan 12 through the collecting line 22. The O-ring 66 prevents thereby that it forms a seal between the drain plug 3 2 and the inner surface of the common drain channel 34, the Passage of contaminants from the filter drain line 50 to the sump drain line 46 when the drain plug is removed 32 is in the closed position shown in FIG.

When using the lubricating oil drainage system described above and with the engine 10 off, the drain plug 32 is removed from the end of the common drain passage 34 of the manifold 22 unscrewed. This makes possible, that flowable sludge in the filter housing 5 3 through the Drain line 50 to the collecting line 22 and from this to the outside through the unlocked end of the common Drain channel 34 can drain. Similarly, removal of the plug 3 allows 2 from the manifold 22 also the drainage of the oil in the sump of the crankcase 12 via the drain line 46 to the common drain channel the collecting line 22 and then outwards through the open ungrafted end of the common drain channel 34. Da the outlet opening of the collecting line 22 with the opening 30 in the plate 26 and the opening 28 in the upward inclined crankcase cover part 18 is in overlap, the sludge from the filter 5 2 and the oil from the crankcase sump 12 when draining freely to the outside

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and at the same time through the openings 28 and 30 in one suitable container flow that is in the exit flow path from the open ungrafted end of the manifold 22 can be arranged.

After all drainage from the filter 5 2 and from the crankcase sump 12 has come to a standstill, the plug 32 is reinserted to the common drainage channel 34 of the collecting line 22 to be closed, as shown in FIG. 2. The filter housing 5 3 is opened and the old filter element or the old filter insert is removed and replaced with a new filter element or a new filter insert replaced. The filter housing 5 3 is then closed. Fresh oil is then poured into the crankcase sump 12 filled through a suitable inlet opening for this Purpose is provided. The engine 10 is now started and operated for a few minutes so that the filter is 52 can fill. The oil level in the crankcase sump 12 is then checked and there is sufficient oil added to bring the level of the oil in the crankcase pan 12 to a certain mark.

From the detailed description of the invention described above, it emerges how its objectives in the preferred one Way can be achieved. Various modifications can of course be made within the scope of the invention. Further the result is that after removing the four screws 24, the entire engine 10 (with the drain lines attached to them 4 6 and 50 and the manifold 22) can be removed from the vehicle without the oil from the crankcase 12 or must be drained from the filter 53. It should also be mentioned that motors usually come from the manufacturer be supplied with oil in the crankcase. It is therefore, if the drain apparatus according to the invention during the

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Manufacture assembled with the engine does not require the oil prior to installing the engine in the vehicle drain, as the installation only requires the insertion of the four screws 24.

Patent claims:

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Claims (1)

P a tentan claims 1,, combination, characterized by a motor, a * -.-.- 'Lubricating circuit for this engine with one device for the supply of a lubricant to the engine, which engine has a crankcase that has a tub or forms a sump for the lubricant, a filter in the lubricant flow path of the lubrication circuit is switched to filter impurities from the lubricant flowing through the mentioned circuit, a first drain pipe connected to said pan for draining the same, a second one Drain line, which od with the filter for draining a lubricant sludge has collected in the filter, said common drain manifold has a drain outlet, the first and the second drain line is in flow connection with the common drain manifold, a drain plug, which is inserted into the aforementioned manifold for the closure of the drain outlet to allow drainage from the Sump and out of the filter through the drain outlet, which plug removes from the drain outlet to allow drainage from the oil pan and filter through the drain outlet, and a Sealing element between the plug and a surface of the manifold for fluidic isolation of the first 509841/0247 and the second drain line from each other when the plug is in the closed position to the drain outlet located to a contamination of the lubricant in the mentioned sump by sludge from the filter to prevent. 2, combination according to claim 1, characterized in that the drain plug can be removed from the manifold, 3. Combination according to claim 1, characterized in that the plug and the surface of the manifold cooperate Form elements and the sealing element is carried by one of the aforementioned elements. Combination according to claim 3, characterized in that the stopper has an annular countersunk recess is provided, in which there is an O-ring, which rests against the mentioned surface of the manifold, to fluidically isolate the first and second drain lines from one another when the plug enters the drain outlet is used. 5, combination according to claim 1, characterized in that the engine is arranged on the chassis of a vehicle is and has a crankcase cover which is mounted on the chassis below the engine to the crankcase against stones and the like along the drive 509841/0247 away from the vehicle to protect and shield which Manifold attached to the crankcase cover and positioned to provide access to the drain plug to allow drainage from the manifold drain outlet when the drain plug is not in the drain outlet is inserted. Combination according to Claim 1, characterized in that the engine is arranged on the chassis of a vehicle is and has a crankcase cover which is mounted on the chassis below the engine to To protect and shield the crankcase against stones and the like along the route of the vehicle, a Fluid outlet opening in the crankcase cover, which manifold on the inner surface of the crankcase cover provided in registration with the fluid outlet port and arranged to provide access to the drain plug exists and draining through the fluid outlet opening from the drain outlet of the manifold can occur if the drain plug is not inserted in the drain outlet. 7. Combination, characterized by a motor, a Lubrication circuit for this engine with a device for supplying a lubricant to the engine, the latter has a crankcase that forms a sump or sump for the lubricant, a filter that switched into a fluid flow path of the lubrication circuit is to filter out impurities from the lubricant flowing in the circuit, a first Drain line that is connected to the sump to this 509841/0247 to drain, a second drain line connected to the Filter is connected to drain a fluid sludge or the like that has accumulated in the filter, a common drain manifold for the sump and for the filter, which drain manifold has a drain channel having a drain outlet, the first and second drain lines in fluid communication with the Drain channel stand, a plug that goes into the drain channel for the closure of the drain outlet is used to drain from the sump and from the filter through the drain outlet, which plug can be removed from the drain outlet to facilitate drainage from the sump and from the filter through the drain outlet, and an element for manufacture a sealing abutment between the plug and the boundary surface of the drain channel adjacent to the Plug for the fluidic isolation of the first and the second drain line from each other when the plug is in the closed position in the drain channel to thereby preventing contamination of the lubricant in the sump by the sludge from the filter. 8, combination according to claim 7, characterized in that that the drain plug can be removed from the manifold. 9, combination according to claim 7, characterized in that said element is a sealing element which is carried by one of the mentioned parts. 509841/0247 10, combination according to claim 9, characterized in that the stopper with an annular countersunk Recess is provided and the sealing element is an O-ring which is inserted into the recess mentioned is which O-ring rests against the mentioned surface of the drain channel, around the first and the second To isolate the drain line from each other fluidically when the plug is in the closed position in the drain channel is located. 11. Combination according to claim 7, characterized in that that the engine is arranged on the chassis pines vehicle and has a crankcase cover which is mounted on the chassis below the engine to protect the crankcase against stones and the like To protect and shield the route of the vehicle, which manifold is attached to the crankcase cover and is arranged to provide access to the drain plug and drain from the drain outlet the manifold can take place when the drain plug is not in the closed position to the Drain outlet is located. 12, combination according to claim 7, characterized in that the engine is arranged on the chassis of a vehicle and has a crankcase cover, which is mounted on the chassis below the engine to protect the crankcase against stones and the like, lengthways to protect and shield the route of the vehicle 509841/0247 men, a fluid outlet opening in the crankcase cover, which manifold on the inner surface of the The crankcase cover is provided in register with the fluid outlet opening and is arranged so that access to the drain plug and the draining through the fluid outlet opening from the drain outlet of the manifold can take place when the drain plug is not in the closed position to the drain outlet. 509841/0247