DE3929078A1 - Forced lubrication of combustion engine with preliminary pumping - involves auxiliary pump driven briefly by battery-powered motor to establish pressure before engine is started - Google Patents

Forced lubrication of combustion engine with preliminary pumping - involves auxiliary pump driven briefly by battery-powered motor to establish pressure before engine is started

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Publication number
DE3929078A1
DE3929078A1 DE3929078A DE3929078A DE3929078A1 DE 3929078 A1 DE3929078 A1 DE 3929078A1 DE 3929078 A DE3929078 A DE 3929078A DE 3929078 A DE3929078 A DE 3929078A DE 3929078 A1 DE3929078 A1 DE 3929078A1
Authority
DE
Germany
Prior art keywords
oil pump
engine
characterized
pressure
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE3929078A
Other languages
German (de)
Inventor
Blaj Adrian Dipl-Ing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BLAJ ADRIAN DIPL ING
Original Assignee
BLAJ ADRIAN DIPL ING
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BLAJ ADRIAN DIPL ING filed Critical BLAJ ADRIAN DIPL ING
Priority to DE3929078A priority Critical patent/DE3929078A1/en
Publication of DE3929078A1 publication Critical patent/DE3929078A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/12Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/16Controlling lubricant pressure or quantity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/02Conditioning lubricant for aiding engine starting, e.g. heating
    • F01M5/025Conditioning lubricant for aiding engine starting, e.g. heating by prelubricating, e.g. using an accumulator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • F01M2001/0207Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0215Electrical pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/02Conditioning lubricant for aiding engine starting, e.g. heating
    • F01M5/025Conditioning lubricant for aiding engine starting, e.g. heating by prelubricating, e.g. using an accumulator
    • F01M2005/026Conditioning lubricant for aiding engine starting, e.g. heating by prelubricating, e.g. using an accumulator with an auxiliary pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/20SOHC [Single overhead camshaft]

Abstract

The engine drives its main oil pump (28) which draws lubricant from the sump (24) through a suction pipe (26), and forces it through a filter and pressure pipes (34,36) to the lubrication points (38). Before the engine is started, an electric motor (44) is operated for a few seconds to drive an auxiliary oil pump (42) drawing from another suction pipe (40), and bypassing the filter for more rapid effect. The oil pressure switch (60) is connected to the auxiliary oil pump (42). The switch (60) is in series with a door contact switch (62). The electric motor (44) is operated from a battery (64) which also connects to both switches (60,62). A solenoid coil (68) connected to the door switch (62) is electrically controlled (70). USE/ADVANTAGE - Esp. for motor vehicle engine. Oil pressure is worked up before starting by relatively simple device which can be retrofitted without high cost to existing engines.

Description

The invention relates to a method for lubricating combustion engines (in particular motor vehicle engines), the one Circulating pressure lubrication with one driven by the internal combustion engine NEN oil pump, and a device for performing this procedure.

With today's common pressure lubrication, as in practical all motor vehicle engines and many other internal combustion engines is used, the oil pump is directly through the internal combustion engine driven and builds one starting with the starting process of the engine Oil pressure on. For motor vehicle engines that have an oil pressure gauge, one can observe that the oil pressure only a short time after the beginning of the Starting process increases. Immediately after the start of the start process there is therefore insufficient oil pressure. Especially in the first Immediately after the start of the starting process is the lubrication of the Motors insufficient, during this time a critical ver wear phase, especially in the plain bearings. On the one hand, it leads to greater wear than after the build-up of the oil pressure and others on the other hand to noises that some users find annoying, especially rattling noises at the first moment of starting the Internal combustion engine. In the case of motor vehicles that are predominantly in short Road traffic driven and restarted every single route compared to long-distance vehicles due to the lack of lubrication during the first Moments noticeable after the start of the start.

When the engine is switched off, it then drips generally relatively thinly liquid lubricant from all sliding points and lubrication lines in the oil pan. After long periods of inactivity and especially with low ones Temperatures, e.g. when winter starts, it needs cold and tough  flowing oil some time until the last lubrication point again is reached. When changing the oil filter or when changing the oil requires the existing drive-connected to the internal combustion engine Oil pump for a long time to the new, still empty filter cartridges and / or refill the empty lubrication lines and pressurize them put.

This is where the invention begins. She has made it her business in the process of the type mentioned and the Ver circulating pressure lubrication already working devices perform before starting the engine, so that a Lubricant pressure is built up before the engine starts is tested.

In procedural terms, this object is achieved in that before starting the internal combustion engine the existing or an additional oil pump is driven externally and performs pressure lubrication. This circulating pressure lubrication is carried out at least until a lubricant pressure is built up in the engine. A few se are enough customers to supply lubricants via the externally driven oil pump Feed lubrication points, thereby the inventive method run so that a user for the Vorschmie invention required period of time not noticed or at least not as a nuisance feels.

By the pre-lubrication according to the invention before starting the burning engine becomes a lubricant even before the first engine revolution pressure and thus the critical start phase with your Consequences of wear and the associated rattling noises ver cuts, at least significantly reduced. At the same time the lifespan the internal combustion engine noticeably extended. Lubrication problems like them after a long standstill, after changing the oil or oil filter after the State of the art occur are avoided, at least largely switched off.

In terms of device, the task is solved by an external drive existing or an additionally provided oil pump, which before Starting the internal combustion engine can be switched on.  

The device according to the invention is relatively simple in construction, it can be retrofitted to existing internal combustion engines can be attached without much effort, but it is also suitable for initial equipment. The effort is on an external drive, if necessary, an additional oil pump and some smaller, electri cal components such. B. switches, timers, etc., limited.

Except for the pre-lubrication according to the invention before starting the burning The machine enables the device if necessary, for example Prevention of oil sludge, also flushing out the lubrication lines and channels with a solvent without the engine in To have to put into operation. Invention is particularly advantageous moderate device in motor vehicles with auxiliary heating, in which also the cooling water of a water-cooled internal combustion engine is heated. The internal combustion engine is also heated via the cooling water, the oil already takes tempera due to the pre-lubrication according to the invention on before the engine is started.

It has proven to be advantageous to use an external drive electrical contact that is common when using a motor vehicle stuff and is actuated before starting the internal combustion engine to solve. Examples here are a door switch contact, a seat contact, a Contact in the door lock or the like. For example, the electri provided in the door or in the door lock, so remains between Opening the door and starting the start is sufficient long time to the pre-lubrication according to the invention by means of foreign drive to carry out, so a sufficient lubricant pressure in the Install the engine before starting the engine.

It has been shown that a short funding period is already given to the foreign driven oil pump is sufficient to a certain lubricant pressure in the Build engine. For the user (driver) makes the Invention appropriate lubricant flow not necessarily in a time ver lust noticeable. On the other hand, it can be provided that at least least for a certain time after opening the door or pressing the Door lock on the driver side performed the pressure circulation lubrication is before the engine can be started. In this  In this case, a time lock must be provided to start the internal combustion engine machine prevents before the necessary time for pre-lubrication has expired.

It has proven to be very advantageous to use an external drive predetermined period of time, e.g. 10 to 60 seconds to switch off. These On the one hand, there is enough time for sufficient pre-lubrication, on the other hand, the energy for the pre-lubrication process, i.e. for the External drive of the oil pump, limited, so that, for example, after opening the driver 's door several times (if an appropriate contact for the external drive is provided there) no noticeable exhaustion of the Energy source for the external drive occurs. For the external drive offers an electric drive, then the energy supply takes place from the on-board battery. On the other hand, a pressure accumulator be provided with a spring (mechanical memory).

To avoid the lubricant pressure built up according to the invention can degrade due to the existing or additional pump Appropriate measures are provided to prevent the oil from flowing back prevent the delivery line. For this, the pump can have a valve, ins special a check valve, assigned or the least a pump blocks oil flowing back.

Further advantages and features of the invention result from the rest gen claims and the following description of not limiting examples to be understood. These are under Reference to the drawing explained in more detail. The drawing shows:

Fig. 1 is a perspective view of a motor vehicle engine with additional oil pump and an external drive in the form of a Elek tromotors in an embodiment which is particularly suitable for an initial supply,

Fig. 2 is an illustration corresponding to FIG. 1, but tion in an exporting that preferred for a retrofitting is,

Fig. 3 is a schematic diagram of part of an oil circuit of an internal combustion engine with an externally driven, additional union oil pump, which is arranged in series with the existing oil pump and

Fig. 4 is an illustration similar to FIG. 3, but with pumps connected in parallel.

Fig. 1 shows a schematic, perspective view of a four-cylinder motor vehicle engine, only a few essential parts are shown. In a known manner, the motor 20 , as the internal combustion engine is called in the following, is located within a housing 22 which forms an oil pan 24 in its lower region. In this protrudes an intake port 26 of a first oil pump 28 , which is mechanically - as will be explained later - rotatably connected to the engine 20 and driven by it. On the pressure side of the first oil pump 28 , the oil is fed to an oil filter 32 via a line 30 , from there it reaches the engine via various pressure lines 34 , 36 lubrication points 38 . The arrangement described so far is state of the art.

In addition, a second intake 40 extends into the oil pan 24 , it opens a few centimeters above the bottom of the oil pan 24 in a position where oil is normally present, but no oil sludge can be found. The second intake port 40 leads to a second, additional oil pump 42 which is externally driven. They are driven by an electric motor 44 , which in turn receives its energy from the motor vehicle battery, which will be discussed later.

On the output side, the second oil pump 42 is connected via a line 46 to the pressure line 34 , which leads from the oil filter 32 to the lubrication points 38 .

Before starting the engine 20 , the second oil pump 42 is actuated by the electric motor 44 for a few seconds. As a result, it sucks oil out of the oil pan 24 via the second intake port 40 and, bypassing the oil filter 32, conveys it to the individual lubrication points 38 . As a result, oil pressure builds up in the actual engine housing. The lubrication points 38 are lubricated before the start of the engine 20 begins, the latter takes place in a manner known per se via a starter.

The embodiment of FIG. 1 is essentially intended for a first equipment, which is why the second oil pump 42 is also within the actual engine block. In contrast, the additional second oil pump 42 is in the exemplary embodiment of FIG. 2 outside the engine block, according to FIG. 2 is particularly suitable for retrofitting.

In this exemplary embodiment, the additional second oil pump 42 is connected to an oil drain hole 46 of the oil pan 24 via a pressure hose designed as a second intake 40 . In order to avoid that over the usually at the deepest point of the oil pan 24 before seen oil drain hole 46 through the second oil pump 42 mud is being sucked into the oil drain hole 46 a sleeve (not shown) provides the few centimeters below the bottom of the Oil pan 24 ends and ensures that no sludge is sucked in through the oil drain hole 46 , the second intake port 40 and the second oil pump 42 .

In terms of design, the second oil pump in the embodiment according to FIG. 2 does not differ from the previously discussed embodiment according to FIG. 1. It is also connected to the pressure line 34 via a line 30 , which is again a pressure hose here there they are connected to a flange that is normally used for an oil pressure sensor. If this should not be omitted, as shown in exemplary embodiment 2 , but should remain, a T-piece is used at the corresponding point.

Fig. 3 shows a schematic representation of the hydraulic and elec trical circuits. In this illustration, the two oil pumps 28 , 42 - as in the previous exemplary embodiments - are connected in parallel. Gear pumps are usually used as oil pumps; a delivery rate of two liters per minute is sufficient for normal motor vehicle engines. The additional oil pump 42 is designed for a pressure of approximately 2 bar, this value has proven to be completely sufficient. However, higher pressure values and delivery rates are not excluded. With the delivery capacity and the end pressure mentioned, the drive power which is required for the second oil pump 42 is low. As shown in all the exemplary embodiments, it can be applied by an electric motor 44 , but on the other hand mechanical energy stores, which are charged in particular by the oil pressure of the engine 20 , pneumatic stores and the like can also be used. A drive by means of an electric motor 44 has the advantage of convenient control, good availability and high reliability.

In the exemplary embodiment according to FIG. 3, the existing, first oil pump 28 sucks oil from the oil pan 24 via the intake port 26 when it is actuated via the drive 48 shown schematically, that is to say when the motor 20 rotates. In the exemplary embodiments according to FIGS. 1 and 2, this drive takes place in a known manner via two shafts 50 , 52 which are in engagement with one another via a pair of gearwheels. As a result, the first oil pump 28 is rotated whenever the engine 20 is rotated or rotates automatically.

In Fig. 3 it is assumed that the first oil pump 28 blocks against backflow. If it does not have this property, a check valve is installed above the pump. In a known manner, the pressure side of the first oil pump 28 is assigned a pressure relief valve 54 which opens above a predetermined pressure and thereby prevents damage to the pump 28 when there is a blockage.

When driven by the electric motor 44, the second oil pump 42 also sucks in oil from the oil pan 24 and delivers it into the pressure line 34 . If there is a blockage on the engine side, excess pressure can escape via the pressure relief valve 54 , but it is advantageous to assign the second oil pump 42 its own pressure relief valve.

In the exemplary embodiment according to FIG. 3, it is assumed that the second oil pump 42 does not automatically block in the return flow path. In order to prevent lubricant delivered by the first pump 28 drives the second oil pump 42 and flows back through this into the oil pan 24 , a check valve 56 is provided on the pressure side of the second oil pump 42 . An oil filter 58 is also inserted into the pressure line 34 .

The second oil pump 42 is assigned an oil pressure switch 60 which is connected in series with a door contact 62 . An electrical connection to the electric motor 44 is connected directly to a motor vehicle battery 64 which, with its other pole, rests on the series connection of oil pressure switch 60 and door contact switch 62 . When both scarf ter 60 , 62 are closed, the electric motor 44 receives voltage so that a current can flow, the electric motor 44 rotates and thereby rotates the second oil pump 42nd

The oil pressure switch 60 is designed so that it is closed below a pre-specified oil pressure, for example below 2 bar. Before starting the engine 20, there is usually no oil pressure, so that the oil pressure switch 60 is closed. If, according to the invention (before starting the engine 20 ), an oil pressure is built up in the lubrication point area 66 via the second oil pump 42 , the oil pressure can increase until the threshold value of the oil pressure switch 60 is reached. From this point on, the voltage supply to the electric motor 44 via the oil pressure switch 60 is interrupted and the pre-start lubrication is completed.

The lubrication according to the invention is triggered before the engine 20 is started by a door contact switch 62 . This is normally open (with the driver's door closed). If it is closed, the driver's door is opened, the electric motor 44 receives voltage from the motor vehicle battery 64 .

In the exemplary embodiment shown, a magnetic coil 68 is assigned to the door contact switch 62 and is controlled by an electrical control unit 70 . In the exemplary embodiment shown here, the contact 42 is opened after a predetermined period of time, for example 20 seconds, and the voltage supply to the electric motor 44 is interrupted.

In another embodiment, not shown here, the magnetic coil 68 and the control unit 70 are not provided. The door contact 62 then remains closed as long as the driver's door is open. Since the second oil pump 42 works either until the oil pressure set at the oil pressure switch 60 is reached or until the driver's door is closed again.

In a further alternative embodiment, the contact 42 is provided in the door lock of the driver's door and closes whenever a key is in the door lock. The contact is then held by the Steuerein unit 70 as long as lubrication is necessary for a sufficient lead.

In the embodiment of Fig. 4, the two pumps 28 connected in 42 series. Both lock in the return flow path. A check valve 72 is connected in parallel to each pump. The check valve 72 of the other pump opens when the pump under consideration is working, in this way a bypass line is created for the pump that is not active. Otherwise, the arrangement corresponds to the previously discussed embodiments.

Basically, it is - in contrast to the embodiment examples described - not necessary to see an additional second oil pump 42 before. Instead, the first oil pump can also be connected to the motor 20 via a freewheel and connected to the electric motor 44 via a second freewheel. Another mechanical coupling, for example via a differential, which is only an oil pump to the two different drive means is also possible.

With an additional second oil pump 42 , it is possible to arrange the first oil pump 28 , which is present anyway, higher up than was previously the case, because the first intake process when starting the engine is now of less importance. Finally, it is possible to always switch on the additional second oil pump 42 even during normal operation of the engine if the oil pressure becomes too weak, for example if the first oil pump 28 fails or in the high-load range of the engine.

Claims (10)

1. A method for the lubrication of internal combustion engines ( 20 ) which have a pressure lubrication with an oil pump ( 28 ) driven by the internal combustion engine ( 20 ), in particular motor vehicle engines, characterized in that before starting the internal combustion engine ( 20 ) the existing ( 28 ) or an additional oil pump ( 42 ) is driven externally and performs pressure lubrication.
2. The method according to claim 1, characterized in that the Druckum running lubrication is carried out at least until there is a predetermined lubricant pressure has built up.
3. The method according to claim 1 or 2, characterized in that the external drive via an electric motor ( 44 ).
4. The method according to any one of claims 1 to 3, characterized in that the at least one oil pump ( 28 , 42 ) blocks in the return path of the lubricant or that a valve, in particular a check valve, is connected in series with the pump ( 28 , 42 ) .
5. The method according to any one of claims 1 to 4, characterized in that the external drive is triggered by a switch contact, for example a door contact ( 62 ), a seat contact or a contact in the door lock.
6. The method according to any one of claims 1 to 5, characterized in that that the external drive after a predetermined period of time, e.g. to 20 to 60 seconds, is switched off.  
7. The method according to any one of claims 1 to 6, characterized in that the external drive is switched off at the start of the starting process of the internal combustion engine ( 20 ).
8. The method according to any one of claims 1 to 7, characterized in that the external drive is switched off after reaching a predetermined pressure on the pressure side of the pump ( 28 , 42 ).
9. Device for performing the method according to one of claims 1 to 8, characterized by a preferably as an electric motor ( 44 ) designed external drive of the existing ( 28 ) or an additionally provided oil pump ( 42 ) and by an actuation supply that the existing ( 28 ) or the additional oil pump ( 42 ) switches on before the engine ( 20 ) starts.
10. The device according to claim 9, characterized in that two oil pumps ( 28 , 42 ) are provided and these either in series, each oil pump ( 28 , 42 ) a check valve ( 72 ) is connected in parallel, or are arranged in parallel.
DE3929078A 1989-09-01 1989-09-01 Forced lubrication of combustion engine with preliminary pumping - involves auxiliary pump driven briefly by battery-powered motor to establish pressure before engine is started Withdrawn DE3929078A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3929078A DE3929078A1 (en) 1989-09-01 1989-09-01 Forced lubrication of combustion engine with preliminary pumping - involves auxiliary pump driven briefly by battery-powered motor to establish pressure before engine is started

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3929078A DE3929078A1 (en) 1989-09-01 1989-09-01 Forced lubrication of combustion engine with preliminary pumping - involves auxiliary pump driven briefly by battery-powered motor to establish pressure before engine is started

Publications (1)

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DE3929078A1 true DE3929078A1 (en) 1991-03-07

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DE3929078A Withdrawn DE3929078A1 (en) 1989-09-01 1989-09-01 Forced lubrication of combustion engine with preliminary pumping - involves auxiliary pump driven briefly by battery-powered motor to establish pressure before engine is started

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012060A1 (en) * 1993-10-28 1995-05-04 Drs Military Systems, Inc. Improved engine oiling system
WO1997029272A1 (en) * 1996-02-10 1997-08-14 Ina Wälzlager Schaeffler Kg Adjusting cylinder of a camshaft adjuster on which a separate oil supply device can act
US5915348A (en) * 1996-11-07 1999-06-29 Ina Walzlager Schaeffler Ohg Adjusting cylinder of a camshaft adjusting device acted upon by a separate oil supply unit
EP1353075A2 (en) * 2002-04-13 2003-10-15 Hydraulik-Ring Gmbh Starting device for a consumer, such as a camshaft adjuster, automatic gearbox and suchlike, of a vehicle, especially a motor vehicle
EP1362994A2 (en) * 2002-05-15 2003-11-19 Dana Automotive Limited Engine lubrication system having an auxiliary pump
US6739305B2 (en) 2001-03-27 2004-05-25 Toyoda Boshoku Corporation Oil pump for internal combustion engine and method of operating the same
FR2857694A1 (en) * 2003-07-17 2005-01-21 Alfred Markaj Prelubrication process for e.g. internal combustion engine of vehicle, involves starting engine only when prelubricating oil pressure reaches preset value, and automatically cutting oil when pressure reaches normal operating value
WO2005012703A1 (en) * 2003-07-28 2005-02-10 General Electric Company Locomotive engine restart shutdown override system and method
EP1598531A1 (en) * 2003-02-28 2005-11-23 Aisin Seiki Kabushiki Kaisha Oil-feeding device for engine
DE102016222854A1 (en) * 2016-11-21 2018-05-24 Bayerische Motoren Werke Aktiengesellschaft Oil supply device, motor vehicle with an oil supply device and method for operating an oil supply device
EP3536918A1 (en) * 2018-03-09 2019-09-11 FPT Motorenforschung AG Management method of an internal combustion engine lubrication and internal combustion engine implementing the method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1979406U (en) * 1967-03-17 1968-02-22 Hoechst Ag Engine with automatic Prelubrication.
DE2719838A1 (en) * 1977-05-04 1978-11-09 Guenter Braitsch Pre-start lubricating pump for IC engine - consists of electrically or mechanically driven pump in parallel with main pump
DE3002391A1 (en) * 1980-01-24 1981-08-20 Hermann Papst Arrangement for lubricating an internal combustion engine
DE3804755A1 (en) * 1988-02-16 1989-08-24 Helmut Plum Engine oil pressure reservoir for spark ignition and diesel engines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1979406U (en) * 1967-03-17 1968-02-22 Hoechst Ag Engine with automatic Prelubrication.
DE2719838A1 (en) * 1977-05-04 1978-11-09 Guenter Braitsch Pre-start lubricating pump for IC engine - consists of electrically or mechanically driven pump in parallel with main pump
DE3002391A1 (en) * 1980-01-24 1981-08-20 Hermann Papst Arrangement for lubricating an internal combustion engine
DE3804755A1 (en) * 1988-02-16 1989-08-24 Helmut Plum Engine oil pressure reservoir for spark ignition and diesel engines

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012060A1 (en) * 1993-10-28 1995-05-04 Drs Military Systems, Inc. Improved engine oiling system
DE19604865B4 (en) * 1996-02-10 2009-05-07 Schaeffler Kg Actuating cylinder of a camshaft adjuster which can be acted upon by a separate oil delivery device
WO1997029272A1 (en) * 1996-02-10 1997-08-14 Ina Wälzlager Schaeffler Kg Adjusting cylinder of a camshaft adjuster on which a separate oil supply device can act
USRE37268E1 (en) 1996-02-10 2001-07-10 INA Wälzlager Schaeffler oHG Adjusting cylinder of a camshaft adjusting device acted upon by a separate oil supply unit
US5915348A (en) * 1996-11-07 1999-06-29 Ina Walzlager Schaeffler Ohg Adjusting cylinder of a camshaft adjusting device acted upon by a separate oil supply unit
DE10213598B4 (en) * 2001-03-27 2008-08-28 Denso Corp., Kariya Oil pump for an internal combustion engine and method for operating the same
US6739305B2 (en) 2001-03-27 2004-05-25 Toyoda Boshoku Corporation Oil pump for internal combustion engine and method of operating the same
EP1353075A2 (en) * 2002-04-13 2003-10-15 Hydraulik-Ring Gmbh Starting device for a consumer, such as a camshaft adjuster, automatic gearbox and suchlike, of a vehicle, especially a motor vehicle
EP1353075B1 (en) * 2002-04-13 2007-04-18 Hydraulik-Ring Gmbh Starting device for a consumer, such as a camshaft adjuster, automatic gearbox and suchlike, of a vehicle, especially a motor vehicle
EP1362994A2 (en) * 2002-05-15 2003-11-19 Dana Automotive Limited Engine lubrication system having an auxiliary pump
US6941922B2 (en) 2002-05-15 2005-09-13 Dana Automotive Limited Engine lubrication system
EP1362994A3 (en) * 2002-05-15 2004-01-28 Dana Automotive Limited Engine lubrication system having an auxiliary pump
EP1598531B1 (en) * 2003-02-28 2012-04-18 Aisin Seiki Kabushiki Kaisha Oil-feeding device for engine
EP1598531A1 (en) * 2003-02-28 2005-11-23 Aisin Seiki Kabushiki Kaisha Oil-feeding device for engine
FR2857694A1 (en) * 2003-07-17 2005-01-21 Alfred Markaj Prelubrication process for e.g. internal combustion engine of vehicle, involves starting engine only when prelubricating oil pressure reaches preset value, and automatically cutting oil when pressure reaches normal operating value
WO2005012703A1 (en) * 2003-07-28 2005-02-10 General Electric Company Locomotive engine restart shutdown override system and method
US7546184B2 (en) 2003-07-28 2009-06-09 General Electric Company Locomotive engine restart shutdown override system and method
DE102016222854A1 (en) * 2016-11-21 2018-05-24 Bayerische Motoren Werke Aktiengesellschaft Oil supply device, motor vehicle with an oil supply device and method for operating an oil supply device
EP3536918A1 (en) * 2018-03-09 2019-09-11 FPT Motorenforschung AG Management method of an internal combustion engine lubrication and internal combustion engine implementing the method

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