DE102016222854A1 - Oil supply device, motor vehicle with an oil supply device and method for operating an oil supply device - Google Patents

Oil supply device, motor vehicle with an oil supply device and method for operating an oil supply device

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Publication number
DE102016222854A1
DE102016222854A1 DE102016222854.4A DE102016222854A DE102016222854A1 DE 102016222854 A1 DE102016222854 A1 DE 102016222854A1 DE 102016222854 A DE102016222854 A DE 102016222854A DE 102016222854 A1 DE102016222854 A1 DE 102016222854A1
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Germany
Prior art keywords
oil
internal combustion
engine
combustion engine
main
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.)
Pending
Application number
DE102016222854.4A
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German (de)
Inventor
Manfred Lauer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE102016222854.4A priority Critical patent/DE102016222854A1/en
Publication of DE102016222854A1 publication Critical patent/DE102016222854A1/en
Pending legal-status Critical Current

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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
    • F01M5/00Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/02Conditioning lubricant for aiding engine starting, e.g. heating
    • F01M5/021Conditioning lubricant for aiding engine starting, e.g. heating by heating

Abstract

The invention relates to an oil supply device (1) for an internal combustion engine (13) of a motor vehicle (14), comprising an oil reservoir (2), a main oil line (3) and a main oil pump (4), by means of which engine oil (5) from the oil reservoir (2) in a main flow direction (6) through the main oil line (3) can be supplied and thereby the internal combustion engine (13) with engine oil (5) can be supplied, wherein the oil supply device (1) has an oil feed unit (7) and an additional line (8), via which the internal combustion engine (13) by means of the oil delivery unit (7) independently of the main oil pump (4) with engine oil (5) can be supplied. Further aspects of the invention relate to a motor vehicle (14) and a method for operating an oil supply device (1).

Description

  • The invention relates to an oil supply device for an internal combustion engine of a motor vehicle, a motor vehicle with an internal combustion engine and with an oil supply device and a method for operating an oil supply device.
  • It is known from the general state of the art and in particular from mass-produced vehicles that oil pumps are used to supply respective bearings of an internal combustion engine with engine oil as lubricant and thereby avoid any bearing damage during engine operation. Such bearings include, for example, crankshaft bearings or camshaft bearings, to name just a few examples. If the lubricant film is insufficient or only partially built up in the bearing points, static friction or mixed friction may occur at least temporarily, wherein material contact between the bearing shells and the shaft regions accommodated therein may occur. Such stiction or mixed friction requires an increased starter torque or an increased starter power of a starter for accelerating and thus starting (starting) of the internal combustion engine. Just mentioned types of friction can also lead to increased signs of wear, for example on the bearings.
  • It is an object of the invention to provide an oil supply device for an internal combustion engine of a motor vehicle, a motor vehicle with an internal combustion engine and with an oil supply device and a method for operating an oil supply device, which allows a simplified starting of the internal combustion engine and an occurrence of stiction or mixed friction during operation the internal combustion engine can be at least largely prevented.
  • This object is achieved by an oil supply device with the features of the claim 1 , by a motor vehicle having the features of the claim 7 and by a method having the features of the claim 9 solved. Advantageous embodiments of the invention are the subject of the dependent claims and the description.
  • The invention relates to an oil supply device for an internal combustion engine of a motor vehicle, comprising an oil reservoir, with a main oil line and with a main oil pump, by means of which motor oil from the container in a main flow direction through the main oil line conveyed and thereby the internal combustion engine is supplied with engine oil from.
  • The oil supply device according to the invention has an oil feed unit and an additional line via which the internal combustion engine can be supplied with engine oil by means of the oil feed unit, independently of the main oil pump. This is advantageous since the oil delivery unit can thus supply the internal combustion engine with engine oil even when the main oil pump is deactivated in order thereby to convey, for example, engine oil into respective bearings of the internal combustion engine. In this case, for example, respective crankshaft bearings of the internal combustion engine can be supplied with engine oil, to name just one example. The oil feed unit can also be activated independently of the internal combustion engine and thus independently of this drivable. Thus, the oil delivery unit can supply the internal combustion engine even at a standstill with engine oil to provide a sufficient amount of engine oil for the respective camp before starting the internal combustion engine, so a starting, so starting the internal combustion engine with only low stiction or mixed friction or even no such friction can be done in the field of bearings. In addition, due to the at least largely avoiding the occurrence of such friction, a particularly low starter torque of a starter is sufficient to start the internal combustion engine. The starter may be formed, for example, as a pinion starter. Thus, by supplying the internal combustion engine with lubricant (engine oil) by the oil delivery unit thus already for example during a starting process of the internal combustion engine, an occurrence of mixed friction in the bearings at least largely prevented and thus any signs of wear are counteracted.
  • The invention is based on the finding that after stopping (deactivating) the internal combustion engine, an oil pressure in the area of the bearings can also drop to ambient pressure. When restarting (activating) the internal combustion engine is therefore to overcome by the starter stiction and the said mixed friction in the camps to start the internal combustion engine. Particularly in the case of negative outside temperatures, in the case of systems known from the prior art, in which no such oil delivery unit is provided, a significantly oversized starter, which may also be referred to as a starter, is necessary. Likewise, a correspondingly powerful and large starter battery is to be provided with these systems. For this reason, such systems for oil supply to an internal combustion engine on a high weight.
  • The oil delivery unit, however, allows it already before an engine start the Internal combustion engine to press engine oil in the respective camp to reduce the static friction or mixed friction. The oil delivery unit can be supplied here as well as the main oil pump from a same oil tank with engine oil. Such an oil container may be formed, for example, as an oil pan. Due to the - compared to known from the prior art systems - significantly reduced static friction or mixed friction for starting the internal combustion engine overall, a lower, necessary starter performance is required, making a lighter overall starter (starter) and a much smaller starter battery can be used , In principle, it is sufficient to control the oil feed unit only for a short time before the actual starting of the internal combustion engine and thus to activate, thereby providing the respective bearings sufficiently with engine oil. By thus already existing at the start, built up by the oil feed oil pressure advantageously bearing cups of the bearing are less stressed and can also be dimensioned lighter. The oil delivery unit can generally be supplied with energy by a vehicle battery of the motor vehicle and be actuated by a control device, for example of the motor vehicle, and thus activated and deactivated.
  • In an advantageous embodiment of the invention, the oil delivery unit has an additional oil pump and, additionally or alternatively, an accumulator for storing engine oil. The additional oil pump can be driven for example via an actuator which can be supplied with electrical energy by the vehicle battery. In general, the auxiliary oil pump can be driven independently of the internal combustion engine. Thus, the auxiliary oil pump can therefore be driven independently of an operating condition of the internal combustion engine and thereby engine oil are promoted to the respective camps.
  • Alternatively, the oil delivery unit may include the pressure accumulator. The pressure accumulator may be formed as a pressure vessel, stored in which engine oil and thus can be stored. The pressure accumulator may, for example, have a connection via which the pressure accumulator can be supplied with compressed air, for example via a compressor of the oil feed unit. By the compressed air, engine oil can be squeezed out of the pressure accumulator and the engine oil finally be promoted via the additional line to the internal combustion engine to provide them with the engine oil. The compressor can be supplied, for example via the vehicle battery of the motor vehicle with electrical energy. Such an accumulator can permanently provide sufficient oil pressure for the bearings, without a permanent operation, for example, the additional oil pump would be required.
  • The oil delivery unit may also include the auxiliary oil pump and the accumulator. This is advantageous since engine oil can thus be conveyed into the pressure accumulator, for example by means of the additional oil pump, and pressure oil supplied to the internal combustion engine is permanently available through the pressure accumulator and without permanent operation of the additional oil pump. The auxiliary oil pump may generally be designed, for example, as a gear pump.
  • Both the additional oil pump and the accumulator can also be arranged in the oil tank. As a result, on the one hand stored in the oil reservoir engine oil can be sucked directly via respective pump openings of the auxiliary oil pump from the oil tank in the auxiliary oil pump and pumped into the pressure accumulator, which can be dispensed with an additional oil pump fluidly connected to the oil tank line end of the additional line in an advantageous manner.
  • The additional oil pump and the accumulator can also be arranged side by side in the oil tank. By arranging the auxiliary oil pump and the pressure accumulator side by side overcoming height differences in conveying the engine oil by means of the auxiliary oil pump in the accumulator can be advantageously avoided, so that the auxiliary oil pump can promote engine oil into the pressure accumulator even at low pump power. Thus, a particularly small and lightweight auxiliary oil pump can be used, which can only have a low pumping power.
  • The pressure accumulator may have an accumulator opening, which may be arranged below a minimum oil level of the engine oil stored in the oil container. The accumulator opening can be opened and closed by means of an oil storage valve. A release of the pressure accumulator opening allows an inflow of engine oil into the pressure accumulator, whereas a closing can prevent an outflow of engine oil from the pressure accumulator. The oil storage valve may be formed as an electrically operable valve. The oil storage valve can be controlled by the control device and, for example, be supplied with electrical energy via the vehicle battery of the motor vehicle. The pressure accumulator can thus be at least partially immersed in the stored in the oil reservoir engine oil, so that the accumulator opening is below the minimum oil level. The minimum oil level can correspond to an oil level which occurs during operation of the internal combustion engine with a minimum permissible oil filling of the oil container. This pressure accumulator opening, which is arranged below the minimum oil level, allows an inflow of engine oil into the pressure accumulator without the additional oil pump being required for this purpose. The prerequisite for the inflow of engine oil into this pressure accumulator opening arranged in this way is that a static pressure of the engine oil in the region of the pressure accumulator opening caused, for example, as a result of a displacement of the engine oil by the accumulator, is greater than an air pressure in the interior of the accumulator. To meet this condition, the pressure accumulator may for example have an electrically controllable vent valve for venting the pressure accumulator. The vent valve can be supplied via the vehicle battery of the motor vehicle with electrical energy. Furthermore, the venting valve can be controlled by the control device of the motor vehicle, that is to say at least be opened as a function of the respective signals of the control device. By opening the vent valve compressed air can escape from the pressure accumulator and thus the air pressure in the interior of the accumulator can be reduced until a displacement-induced influx of engine oil through the pressure accumulator opening is possible. After the engine oil has flowed in, the oil storage valve can be closed and compressed air can be repressurized, whereby the oil storage valve prevents the engine oil from flowing out via the pressure storage opening. In addition, after the introduction of the compressed air into the accumulator by closing the vent valve, a leakage of compressed air through the vent valve can be prevented, so that the accumulator then both contain engine oil, as well as can be under pressure to supply the engine with engine oil. The compressed air can then cause the engine oil to flow out of the pressure accumulator and supply the engine oil with the engine oil.
  • In a further advantageous embodiment, the additional line is oil-conductively connected to the main oil line, wherein the additional line opens in the main flow direction downstream of the main oil pump in the main oil line. This is advantageous because particularly small connections to the internal combustion engine for oil supply must be provided by the mouths of the additional line in the main oil line. In other words, can therefore be dispensed with a complex transformation of the internal combustion engine in the form of providing further connections to the oil supply by means of the oil delivery unit in an advantageous manner. A particular advantage is also that the main oil pump can prevent backflow of the engine oil in the main oil line against the main flow direction when the additional line opens downstream of the main oil pump in the main oil line. The main oil pump can thus serve to maintain an oil pressure built up by the oil feed unit without the main oil pump having to be in operation. The main oil pump can act as a kind of backstop for the engine oil. By the mouths of the additional line in the main oil line downstream of the main oil pump can thus be dispensed with, for example, to provide a check valve in the main oil line to maintain a built up by the oil feed oil pressure. This can save costs and weight.
  • In a further advantageous embodiment of the invention, by means of the oil delivery unit engine oil in a secondary flow direction through the additional line can be conveyed, wherein in the secondary flow downstream of the oil delivery unit, a check valve for preventing backflow of the engine oil is disposed opposite to the secondary flow direction. This is advantageous because there is a greater freedom of design for the oil delivery unit through the check valve. The check valve can prevent total emptying and thus unwanted ventilation of the additional line.
  • In a further advantageous embodiment of the invention, a heating device for area heating of the additional line and additionally or alternatively the main oil line is provided. This is advantageous because the heater allows heating of the engine oil and thus reducing viscosity of the engine oil before it reaches the respective bearings of the internal combustion engine. In other words, then heated and thus very free-flowing engine oil can be promoted to the respective camps. As a result, the internal combustion engine can be started by the starter with a particularly low power requirement. The heating device may advantageously be arranged at a connection point between the main oil line and the additional line and, for example, be coupled in heat-conducting manner at the connection point both with the main oil line and with the additional line. As a result, engine oil conveyed by means of the main oil pump as well as engine oil conveyed by means of the oil feed unit can be heated particularly easily by means of a single heating device. The heating device can be designed, for example, as a heating cartridge, which can be supplied with energy by means of the vehicle battery of the motor vehicle. The heater can also be powered by the vehicle battery with energy and controlled by the controller.
  • In a further advantageous embodiment of the invention, at least the oil delivery unit can be activated as a function of an opening state of a vehicle door of the motor vehicle. This is advantageous because the opening state of the vehicle door Particularly suitable indicator of this is that the internal combustion engine is soon put into operation and accordingly an oil supply to the internal combustion engine with engine oil through the oil delivery unit makes sense. In addition, an area-by-area heating of the additional line and additionally or alternatively the main oil line can be effected as a function of the opening state of the vehicle door. The opening state of the vehicle door may be present, for example, in an open position of the vehicle door. The open state is particularly suitable for a driver's desire to start the internal combustion engine to recognize early and at the same time to prevent unnecessary activation of the oil delivery unit. In addition, the oil delivery unit can also be activated as a function of an actuation of a vehicle navigation system of the motor vehicle. It is also conceivable that the oil delivery unit additionally or alternatively in response to a load of a driver's seat of the motor vehicle by a person characterizing signals of a seat sensor is activated. This represents a particularly reliable indicator that commissioning (starting) of the internal combustion engine is imminent.
  • A second aspect of the invention relates to a motor vehicle with an internal combustion engine and with an oil supply device according to the invention. In this motor vehicle, a simplified starting of the internal combustion engine is made possible, wherein an occurrence of static friction or mixed friction during operation of the internal combustion engine can be at least largely prevented.
  • In an advantageous embodiment of the invention, the motor vehicle has an exhaust pipe, wherein the main oil line and additionally or alternatively the additional line thermally conductively coupled to the exhaust pipe and oriented at least partially parallel to the exhaust pipe. This is advantageous because a heat-conductive coupling of the main oil line and additionally or alternatively the additional line allows a particularly low-cost heating of the engine oil, for example in a start-stop operation in which the internal combustion engine is briefly deactivated and then restarted. Thereby, a separate heating of the engine oil for increasing the flowability (reducing the viscosity by heating the engine oil) omitted. Due to the parallel orientation particularly long, respective line sections of the additional line or the main oil line may be thermally coupled to the exhaust pipe, thereby advantageously a particularly large amount of heat can be exchanged.
  • A third aspect of the invention relates to a method of operating an oil supply device for an internal combustion engine of a motor vehicle in which a main oil pump is used to deliver engine oil from an oil reservoir via a main oil line in a main flow direction through the main oil line, thereby supplying engine oil to the internal combustion engine. According to the invention, an oil feed unit is activated to supply the internal combustion engine independently of the main oil pump via an additional line with engine oil. In this method, a simplified starting of the internal combustion engine is made possible, wherein an occurrence of static friction or mixed friction during operation of the internal combustion engine can be at least largely prevented. By supplying the internal combustion engine with engine oil, for example, a conveying of engine oil into respective bearings of the internal combustion engine is to be understood. In this case, for example, respective crankshaft bearings of the internal combustion engine can be supplied with engine oil, to name just one example.
  • In an advantageous embodiment of the invention, the oil delivery unit is activated before a starting operation of the internal combustion engine and deactivated after a starting operation of the internal combustion engine. This is advantageous because the oil delivery unit is thus particularly demand-driven operable, it being sufficient if the oil delivery unit is only up to a successful start of the internal combustion engine in operation. After starting, the main oil pump can take over the oil supply. An end of the starting process of the internal combustion engine can be achieved when the internal combustion engine is operated independently and thus without further driving the same by a starter, at least at its idle speed.
  • The advantages and preferred embodiments described for the oil supply device according to the invention also apply to the motor vehicle according to the invention and to the method according to the invention and vice versa.
  • Further features of the invention will become apparent from the claims, the figure and the description of the figures. The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figure can be used not only in the respectively indicated combination but also in other combinations or in isolation.
  • The invention will now be described with reference to a preferred embodiment and with reference to the drawings. The single FIGURE shows a schematic representation of a Motor vehicle with an internal combustion engine and with an exemplary embodiment of the invention for an oil supply device.
  • The figure shows a schematic representation of a motor vehicle 14 with an internal combustion engine 13 and with an oil supply device 1 , The oil supply device 1 comprises a presently formed as an oil pan oil tank 2 , as well as a main oil line 3 into which a major oil pump 4 oil-conducting is involved. By means of the main oil pump 4 can with the internal combustion engine running 13 Engine oil 5 from the oil tank 2 in a main flow direction 6 through the main oil pipe 3 promoted and thereby the internal combustion engine 13 with engine oil 5 be supplied. The main flow direction 6 is illustrated here by an arrowhead. When supplying the internal combustion engine 13 becomes the engine oil 5 to respective bearings, not shown here in detail, to which, for example, crankshaft bearings of the internal combustion engine 13 can belong, promoted.
  • To a start improvement, so starting the internal combustion engine 13 to allow reduced friction or mixed friction in the camps, has the oil supply device 1 an oil delivery unit 7 and an additional line 8th on, about which the internal combustion engine 13 by means of the oil delivery unit 7 regardless of the main oil pump 4 with engine oil 5 from the oil tank 2 is available. To the internal combustion engine 13 To start, is a starter pinion of a starter 17 with a toothing of a flywheel 16 engaged, so the starter 17 the internal combustion engine 13 from their standstill, for example, until reaching an idle speed of the internal combustion engine 13 can drive. Once the idling speed is reached, the starting process of the internal combustion engine 13 finished and the internal combustion engine 13 independently and so to speak under firing of respective cylinders of the internal combustion engine 13 run. The main oil pump 4 serves in summary to supply the internal combustion engine 13 with the engine oil 5 as soon as the internal combustion engine 13 - after the startup process - runs independently.
  • Via a return line 18 is the engine oil 5 from the internal combustion engine 13 or from their bearings in the oil tank 2 recyclable. The return line 18 can also be referred to as oil return.
  • The additional line 8th is oil-conducting with the main oil line 3 connected, the additional line 8th in the main flow direction 6 downstream of the main oil pump 4 at a junction 19 into the main oil line 3 empties. At the junction 19 is the main oil pipeline 3 thus with the additional line 8th coupled with oil. This can be done at the connection point 19 For example, be provided a tee.
  • The oil delivery unit 7 has in the present embodiment, an additional oil pump 21 and one of the additional oil pump 21 in a secondary flow direction 9 downstream pressure accumulator 22 for storing engine oil 5 on. The secondary flow direction 9 is illustrated here by an arrowhead. The additional oil pump 21 can also be referred to as a pre-pressure pump. The accumulator 22 is via connections not shown here with compressed air, for example, by a compressor also not shown here of the motor vehicle 14 , the internal combustion engine 13 or the oil supply device 1 supplied with compressed air, so in the accumulator 22 stored engine oil 5 can be acted upon with pressure. The accumulator 22 can through the auxiliary oil pump 21 with engine oil 5 be filled by the auxiliary oil pump 21 by an actuator coupled thereto 23 is driven and thereby on with the additional oil pump 21 coupled cable end 24 the additional line 8th Engine oil 5 from the oil tank 2 sucks. The actuator 23 can via a vehicle battery not shown here of the motor vehicle 14 be supplied with electrical energy.
  • By means of the oil delivery unit 7 is engine oil in the secondary flow direction 9 through the additional line 8th be conveyed, wherein in the secondary flow direction 9 downstream of the oil feed unit 7 a check valve 10 to prevent backflow of engine oil 5 against the secondary flow direction 9 and back into the oil tank 2 is arranged.
  • The oil supply device 1 further comprises a heating device 20 which is presently designed as a heating cartridge. The heater 20 can as well as the actuator 23 with electrical energy from the vehicle battery of the motor vehicle 14 be supplied. By means of the heater 20 are respective pipe sections of the main oil pipe 3 and the additional line 8th heated. To both the main oil pipe 3 as well as the additional line 8th to heat in certain areas, is the heater 20 thermally conductive at the junction 19 both with the main oil pipe 3 as well as with the additional line 8th coupled.
  • In time for an imminent starting the internal combustion engine 13 a sufficient amount of oil of engine oil 5 under sufficient oil pressure at the bearings of the internal combustion engine 13 can provide the oil delivery unit 7 depending on an opening state of a vehicle door 11 of the motor vehicle 14 be activated. It can be provided that at a by a control device 15 of the motor vehicle 14 recognized open position of the vehicle door 11 activating the oil feed unit 7 takes place so that the internal combustion engine 13 as a result, by the oil delivery unit 7 - independent of the main oil pump 4 - with engine oil 5 is supplied. This can ensure that when towing the internal combustion engine 13 through the starter 17 enough engine oil 5 provided at the bearings is at least largely a static friction or a mixed friction at the bearings during the starting process of the internal combustion engine 13 to prevent. The control device 15 In this case, it may be coupled to a door sensor, not shown here, in signal transmission, in order to open the vehicle door 11 to detect. The control device 15 can the oil delivery unit 7 activate and thus activate.
  • The car 14 further includes an exhaust pipe 12 on, with the main oil line 3 as well as the additional line 8th in the present embodiment, thermally conductive with the exhaust pipe 12 are coupled. In addition, both the main oil line 3 as well as the additional line 8th in each case partially parallel to the exhaust pipe 12 oriented to any exhaust heat from the exhaust pipe 12 on the main oil pipe 3 or on the additional line 8th and thus on engine oil contained therein 5 transferred to. This can make the engine oil 5 even without activating the heater 20 heats and thereby a viscosity of the engine oil 5 be reduced, provided the exhaust pipe 12 was already heated by exhaust gas. This leads to improved starting properties even at particularly low ambient temperatures when the internal combustion engine 13 is operated for example in a start-stop operation.
  • Once the internal combustion engine 13 independently, for example, running at idle speed, the oil delivery unit 7 disabled and the main oil pump 4 be activated to the internal combustion engine 13 thus over the main oil line 3 with engine oil 5 to supply.
  • LIST OF REFERENCE NUMBERS
  • 1
    Oil supply device
    2
    oilcontainer
    3
    Main oil line
    4
    Main oil pump
    5
    Engine oil
    6
    Main flow direction
    7
    Oil production unit
    8th
    additional line
    9
    In addition to the flow direction
    10
    check valve
    11
    vehicle door
    12
    exhaust pipe
    13
    Internal combustion engine
    14
    motor vehicle
    15
    control device
    16
    flywheel
    17
    Starter
    18
    Return line
    19
    junction
    20
    heater
    21
    Auxiliary oil pump
    22
    accumulator
    23
    actuator
    24
    cable end

Claims (10)

  1. Oil supply device (1) for an internal combustion engine (13) of a motor vehicle (14), with an oil reservoir (2), with a main oil line (3) and with a main oil pump (4), by means of which engine oil (5) from the oil reservoir (2) a main flow direction (6) through the main oil line (3) can be fed and thereby the internal combustion engine (13) with engine oil (5) can be supplied, characterized in that the oil supply device (1) has an oil feed unit (7) and an additional line (8) via which the internal combustion engine (13) by means of the oil delivery unit (7) independently of the main oil pump (4) with engine oil (5) can be supplied.
  2. Oil supply device (1) after Claim 1 , characterized in that the oil delivery unit (7) has an additional oil pump (21) and / or a pressure accumulator (22) for storing engine oil (5).
  3. Oil supply device (1) after Claim 1 or 2 , characterized in that the additional line (8) is oil-conductively connected to the main oil line (3), wherein the additional line (8) opens in the main flow direction (6) downstream of the main oil pump (4) in the main oil line (3).
  4. Oil supply device (1) according to one of the preceding claims, characterized in that by means of the oil delivery unit (7) engine oil (5) in a secondary flow direction (9) through the additional line (8) is conveyed, wherein in the secondary flow direction (9) downstream of the oil delivery unit ( 7) a check valve (10) for preventing a Return flow of the engine oil (5) opposite to the secondary flow direction (9) is arranged.
  5. Oil supply device (1) according to any one of the preceding claims, characterized in that a heating device (20) for the area-wise heating of the additional line (8) and / or the main oil line (3) is provided.
  6. Oil supply device according to one of the preceding claims, characterized in that at least the oil delivery unit (7) in response to an opening state of a vehicle door (11) of the motor vehicle (14) is activated.
  7. Motor vehicle (14) with an internal combustion engine (13) and with an oil supply device (1) according to one of Claims 1 to 6 ,
  8. Motor vehicle (14) according to Claim 7 , characterized in that the motor vehicle (14) has an exhaust pipe (12), wherein the main oil line (3) and / or the additional line (8) thermally conductively coupled to the exhaust pipe (12) and at least partially oriented parallel to the exhaust pipe (12) is.
  9. A method of operating an oil supply device (1) for an internal combustion engine (13) of a motor vehicle (14) using a main oil pump (4) to deliver engine oil (5) from an oil reservoir (2) via a main oil line (3) in a main flow direction (6) through the main oil line (3) and thereby to supply the internal combustion engine (13) with engine oil (5), characterized in that an oil feed unit (7) is activated to the internal combustion engine (13) independently of the main oil pump (4 ) via an additional line (8) with engine oil (5) to supply.
  10. Method according to Claim 9 , characterized in that the oil delivery unit (7) is activated before a starting operation of the internal combustion engine (13) and deactivated after a starting operation of the internal combustion engine (13).
DE102016222854.4A 2016-11-21 2016-11-21 Oil supply device, motor vehicle with an oil supply device and method for operating an oil supply device Pending DE102016222854A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102016222854.4A DE102016222854A1 (en) 2016-11-21 2016-11-21 Oil supply device, motor vehicle with an oil supply device and method for operating an oil supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016222854.4A DE102016222854A1 (en) 2016-11-21 2016-11-21 Oil supply device, motor vehicle with an oil supply device and method for operating an oil supply device

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DE102016222854A1 true DE102016222854A1 (en) 2018-05-24

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929078A1 (en) * 1989-09-01 1991-03-07 Blaj Adrian Dipl Ing Forced lubrication of combustion engine with preliminary pumping - involves auxiliary pump driven briefly by battery-powered motor to establish pressure before engine is started
DE10121885A1 (en) * 2001-05-05 2002-11-14 Bosch Gmbh Robert Device for heating an item of equipment
US20110303181A1 (en) * 2010-06-14 2011-12-15 Jose Granados Copca Pre-lubrication system for internal combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929078A1 (en) * 1989-09-01 1991-03-07 Blaj Adrian Dipl Ing Forced lubrication of combustion engine with preliminary pumping - involves auxiliary pump driven briefly by battery-powered motor to establish pressure before engine is started
DE10121885A1 (en) * 2001-05-05 2002-11-14 Bosch Gmbh Robert Device for heating an item of equipment
US20110303181A1 (en) * 2010-06-14 2011-12-15 Jose Granados Copca Pre-lubrication system for internal combustion engines

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