US20070022981A1 - Device for cooling at least one piston of an internal combustion engine - Google Patents

Device for cooling at least one piston of an internal combustion engine Download PDF

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Publication number
US20070022981A1
US20070022981A1 US11/546,415 US54641506A US2007022981A1 US 20070022981 A1 US20070022981 A1 US 20070022981A1 US 54641506 A US54641506 A US 54641506A US 2007022981 A1 US2007022981 A1 US 2007022981A1
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United States
Prior art keywords
lubricating oil
piston
oil pump
internal combustion
combustion engine
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.)
Abandoned
Application number
US11/546,415
Inventor
Ulrich Ernst
Uwe Brendel
Carsten Wolf
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Bayerische Motoren Werke AG
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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
Assigned to BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT reassignment BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WOLF, CARSTEN, ERNST, ULRICH, BRENDEL, UWE
Publication of US20070022981A1 publication Critical patent/US20070022981A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F01M2001/086—Lubricating systems characterised by the provision therein of lubricant jetting means for lubricating gudgeon pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P2003/006—Liquid cooling the liquid being oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/40—Oil temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/64—Number of revolutions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed

Definitions

  • the invention relates to a device for cooling at least one piston of an internal combustion engine.
  • German patent publication DE 102 06 769 A1 for operating an internal combustion engine with engine braking and controllable piston cooling, the piston cooling being reduced in engine braking mode.
  • the piston is not excessively cooled in engine braking mode.
  • the development of increased play between the piston and the cylinder wall and an associated increased flow of air from the combustion chamber into the crankcase chamber (blow-by) is thus avoided.
  • the object of the invention is to provide a method which ensures optimized piston cooling in such a way that the overall efficiency of the internal combustion engine is improved.
  • a check valve is used in a known manner in the main supply line, or one check valve is used for each supply line, and according to the invention the lubricating oil pump regulates the pressure in the lubricating oil circuit to adapt to different operating conditions for the internal combustion engine as a function of load.
  • a check valve may be used which operates with an increased opening pressure compared to a check valve in a system without a lubricating oil pump that is regulated as a function of load. In this manner unnecessary piston cooling is avoided in many operating conditions.
  • the lubricating oil pump is regulated as a function of additional operating parameters, in particular as a function of the rotational speed of the internal combustion engine and/or the temperature of the internal combustion engine and/or the coolant temperature of the internal combustion engine and/or the lubricating oil temperature.
  • FIG. 1 shows a first device according to the embodiments of the invention.
  • FIG. 1 shows a schematic illustration of a device for cooling the pistons 2 (or the at least one piston) of an internal combustion engine.
  • the device comprises a lubricating oil pump 10 which via a supply line 12 supplies the piston 2 with lubricating oil for cooling.
  • a check valve 14 is provided in the supply line 12 , between the lubricating oil pump 10 and the outlet opening 12 a of the supply line 12 .
  • the lubricating oil pump 10 is controlled by a control unit 20 which ensures that the lubricating oil pump 10 is regulated as a function of the determined load on the internal combustion engine.
  • the lubricating oil pump 10 preferably is controlled via the control unit 20 (a motor control unit, for example) by means of a characteristic field regulation as a function of a plurality of operating parameters.
  • the control is performed as a function of the engine temperature, the engine rotational speed, and/or the lubricating oil temperature.
  • the check valve 14 may be designed for an increased opening pressure.
  • a check valve 14 for conventional, non-load-dependent regulation of the lubricating oil pump of an internal combustion engine in a motor vehicle is designed for an opening pressure of approximately 2 bar (in order to ensure sufficient piston cooling in all critical circumstances)
  • a check valve 14 is used having an opening pressure that is higher by comparison, for example, an opening pressure of 3 bar.
  • the plurality of valves may be replaced by the use of a single valve in a main supply line which is connected to the supply lines (not illustrated).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

A device for cooling the pistons of an internal combustion engine by a lubricating oil pump which supplies oil from the lubricating oil circuit to at least on the base side of each piston through at least one supply line having an outlet opening and at least one valve. The at least one valve is a check valve which does not permit oil to be supplied until after a defined pressure is achieved in the lubricating oil circuits and a control unit regulates the lubricating oil pump so as to provide variable pressure in the lubricating oil circuit as a function of engine load.

Description

  • This application is a continuation of International Patent Application PCT/EP2005/003783, filed Apr. 11, 2005, and claims the priority of German Patent Application DE 10 2004 017 909.3, filed Apr. 13, 2004, the disclosures of which are expressly incorporated by reference herein.
    • BACKGROUND AND SUMMARY OF THE INVENTION
  • The invention relates to a device for cooling at least one piston of an internal combustion engine.
  • Such a device and method are known from German patent publication DE 199 33 363 A1. According to the disclosure, the supply of lubricating oil for cooling the pistons of the internal combustion engine is controlled by a solenoid valve which is actuated as a function of the engine parameters of oil temperature, water temperature, or oil pressure. In this manner the pistons are cooled, for example only after a cold-start phase has elapsed, thereby ensuring rapid heating of the combustion chamber.
  • Furthermore, a method is known from German patent publication DE 102 06 769 A1 for operating an internal combustion engine with engine braking and controllable piston cooling, the piston cooling being reduced in engine braking mode. As a result, the piston is not excessively cooled in engine braking mode. The development of increased play between the piston and the cylinder wall and an associated increased flow of air from the combustion chamber into the crankcase chamber (blow-by) is thus avoided.
  • The object of the invention is to provide a method which ensures optimized piston cooling in such a way that the overall efficiency of the internal combustion engine is improved.
  • According to the invention, a check valve is used in a known manner in the main supply line, or one check valve is used for each supply line, and according to the invention the lubricating oil pump regulates the pressure in the lubricating oil circuit to adapt to different operating conditions for the internal combustion engine as a function of load. As the result of the load-dependent regulation of the lubricating oil pump, a check valve may be used which operates with an increased opening pressure compared to a check valve in a system without a lubricating oil pump that is regulated as a function of load. In this manner unnecessary piston cooling is avoided in many operating conditions.
  • In one refinement of the invention, the lubricating oil pump is regulated as a function of additional operating parameters, in particular as a function of the rotational speed of the internal combustion engine and/or the temperature of the internal combustion engine and/or the coolant temperature of the internal combustion engine and/or the lubricating oil temperature.
  • Other objects, advantages and novel features of the present invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a first device according to the embodiments of the invention.
    • DETAILED DESCRIPTION
  • FIG. 1 shows a schematic illustration of a device for cooling the pistons 2 (or the at least one piston) of an internal combustion engine. In the embodiment illustrated, the device comprises a lubricating oil pump 10 which via a supply line 12 supplies the piston 2 with lubricating oil for cooling. A check valve 14 is provided in the supply line 12, between the lubricating oil pump 10 and the outlet opening 12 a of the supply line 12. According to the invention, the lubricating oil pump 10 is controlled by a control unit 20 which ensures that the lubricating oil pump 10 is regulated as a function of the determined load on the internal combustion engine. The lubricating oil pump 10 preferably is controlled via the control unit 20 (a motor control unit, for example) by means of a characteristic field regulation as a function of a plurality of operating parameters. In addition to the regulation or control of the lubricating oil pump 10 as a function of the load, the control is performed as a function of the engine temperature, the engine rotational speed, and/or the lubricating oil temperature. As a result of the load-dependent regulation of the lubricating oil pump 10, the check valve 14 may be designed for an increased opening pressure. Whereas a check valve 14 for conventional, non-load-dependent regulation of the lubricating oil pump of an internal combustion engine in a motor vehicle is designed for an opening pressure of approximately 2 bar (in order to ensure sufficient piston cooling in all critical circumstances), for the load-dependent regulation of the lubricating oil pump 10 according to the invention a check valve 14 is used having an opening pressure that is higher by comparison, for example, an opening pressure of 3 bar.
  • Of course, the plurality of valves (one valve per supply line) may be replaced by the use of a single valve in a main supply line which is connected to the supply lines (not illustrated).
  • The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.

Claims (6)

1. A device for cooling at least one piston of an internal combustion engine, comprising:
a lubricating oil pump which supplies oil from a lubricating oil circuit to the at least a base side of at least one piston through a supply line having at least one outlet opening;
at least one valve in the supply line, wherein the at least one valve is a check valve which does not permit oil to be supplied to the at least one piston until after a predefined pressure is achieved in the lubricating oil circuit; and
a control unit which controls the lubricating oil pump to provide a variable pressure in the lubricating oil circuit as a function of load on the internal combustion engine.
2. The device according to claim 1, wherein the check valve operates at a higher opening pressure than a check valve in a system in which lubricating oil pump operation is not regulated as a function of load.
3. The device according to claim 1, wherein the control unit controls the lubricating oil pump to regulate pressure in the lubricating oil circuit as a function of additional operating parameters, including at least one of engine rotational speed, engine temperature, coolant temperature, and lubricating oil temperature.
4. A method for cooling at least one piston of an internal combustion engine, comprising the acts of:
creating a variable pressure in a lubricating oil circuit with a lubricating oil pump controlled by a controller; and
supplying lubricating oil through a supply line having at least one outlet opening and at least one valve in the supply line and to at least a base side of at least one piston;
wherein
the at least one valve is a check valve which does not permit oil to be supplied to the at least one piston until after a predefined pressure is achieved in the lubricating oil circuit; and
the control unit controls the lubricating oil pump to provide the variable pressure in the lubricating oil circuit as a function of load on the internal combustion engine.
5. The device according to claim 4, wherein the check valve operates at a higher opening pressure than a check valve in a system in which lubricating oil pump operation is not regulated as a function of load.
6. The device according to claim 4, wherein the control unit controls the lubricating oil pump to regulate pressure in the lubricating oil circuit as a function of additional operating parameters, including at least one of engine rotational speed, engine temperature, coolant temperature, and lubricating oil temperature.
US11/546,415 2004-04-13 2006-10-12 Device for cooling at least one piston of an internal combustion engine Abandoned US20070022981A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004017909.3 2004-04-13
DE102004017909A DE102004017909A1 (en) 2004-04-13 2004-04-13 Device for cooling at least one piston of an internal combustion engine
PCT/EP2005/003783 WO2005100758A1 (en) 2004-04-13 2005-04-11 Device for cooling at least one piston of an internal combustion engine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/003783 Continuation WO2005100758A1 (en) 2004-04-13 2005-04-11 Device for cooling at least one piston of an internal combustion engine

Publications (1)

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US20070022981A1 true US20070022981A1 (en) 2007-02-01

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US (1) US20070022981A1 (en)
EP (1) EP1743091A1 (en)
DE (1) DE102004017909A1 (en)
WO (1) WO2005100758A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060243226A1 (en) * 2005-05-02 2006-11-02 Bontaz Centre Controlled leakage valve for piston cooling nozzle
US20110276249A1 (en) * 2010-05-10 2011-11-10 GM Global Technology Operations LLC Method to operate an electrically driven opcj valve of an internal combustion engine
WO2012120213A1 (en) * 2011-03-10 2012-09-13 Peugeot Citroen Automobiles Sa Combustion engine lubrication system comprising a variable-displacement oil pump
US20130179049A1 (en) * 2012-01-11 2013-07-11 Ford Global Technologies, Llc Method and device for operating a lubricating system of a combustion engine
US8955474B1 (en) * 2011-04-14 2015-02-17 Patrick J. Derbin Closed loop electronic control for the reduction of soot produced in diesel, gasoline and alternative-fueled engines
US20170167371A1 (en) * 2015-12-10 2017-06-15 Hyundai Motor Company Method for preventing piston oil-up and engine employing the same
US20170241373A1 (en) * 2016-02-18 2017-08-24 Man Truck & Bus Ag Piston for a reciprocating-piston internal combustion engine

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007060160B4 (en) * 2007-12-13 2014-03-27 Ford Global Technologies, Llc Strategy for activating oil spray nozzles
DE102009006963A1 (en) 2009-01-31 2010-08-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Oil supply
DE102009038676B4 (en) * 2009-08-24 2015-11-19 Audi Ag Oil circuit for an internal combustion engine
JP4985739B2 (en) * 2009-10-01 2012-07-25 トヨタ自動車株式会社 Control device for internal combustion engine
DE102009057549A1 (en) * 2009-12-09 2011-06-16 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for cooling or lubricating piston or path in cylinder of internal-combustion engine, involves feeding piston by nozzle device under pressure standing oil
JP2011256742A (en) * 2010-06-07 2011-12-22 Toyota Motor Corp Cooling system for piston
US9334766B2 (en) 2011-09-27 2016-05-10 GM Global Technology Operations LLC Method and apparatus for controlling oil flow in an internal combustion engine
DE102013113217A1 (en) * 2013-11-29 2015-06-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Apparatus and method for lubricating and cooling pistons of an internal combustion engine
DE102015007510A1 (en) * 2015-06-11 2016-12-15 Volkswagen Aktiengesellschaft Method for operating an internal combustion engine and device for carrying out such a method
DE102016225744B4 (en) 2016-12-21 2018-07-12 Continental Automotive Gmbh Method and device for cooling a piston of a reciprocating internal combustion engine
DE102017223127B3 (en) 2017-12-19 2019-02-21 Bayerische Motoren Werke Aktiengesellschaft Heat transfer circuit with a cooling jacket for cooling a heat source of a drive motor

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142484A (en) * 1975-09-05 1979-03-06 Daimler-Benz Aktiengesellschaft Piston for internal combustion engine
US4204487A (en) * 1977-04-28 1980-05-27 David Brown Tractors Limited Internal combustion engines
US4270562A (en) * 1979-09-28 1981-06-02 Caterpillar Tractor Co. Fluid sequence bypass apparatus
US4579093A (en) * 1984-06-06 1986-04-01 American Fits Engine Company, Limited Fuel injection, two cycle engine
US4738330A (en) * 1985-03-22 1988-04-19 Nippondenso Co., Ltd. Hydraulic drive system for use with vehicle power steering pump
US5819692A (en) * 1997-05-01 1998-10-13 Schafer; Timothy Vernon Piston cooling oil control valve
US20040187835A1 (en) * 2003-03-28 2004-09-30 Caterpillar Inc. Fluid delivery control system
US6866011B1 (en) * 2003-10-09 2005-03-15 General Motors Corporation Block-mounted piston squirter
US6907848B2 (en) * 2003-10-09 2005-06-21 General Motors Corporation Connecting rod with lubricant tube
US20050257763A1 (en) * 2004-05-20 2005-11-24 Atsushi Watanabe Valve timing control apparatus
US7082906B2 (en) * 2004-06-25 2006-08-01 Shaw Aero Devices Inc. Piston cooling system
US20060169224A1 (en) * 2005-01-03 2006-08-03 Ingo Lenz Piston-cooling arrangement for an internal combustion engine
US20060223670A1 (en) * 2005-03-31 2006-10-05 Honda Motor Co., Ltd. Hydraulic circuit control device
US7152623B2 (en) * 2003-09-09 2006-12-26 Metaldyne Company, Llc Fluid jet for providing fluid under pressure to a desired location
US20070034189A1 (en) * 2002-07-12 2007-02-15 Isao Kanno Watercraft propulsion system and control method of the system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61138816A (en) * 1984-12-07 1986-06-26 Toyota Motor Corp Fuel evaporation rate control system for direct-injection inernal-combustion engine
DD237868A1 (en) * 1985-05-30 1986-07-30 Cunewalde Motoren DEVICE FOR CONTROLLING PISTON COOLING OF CHARGED INTERNAL COMBUSTION ENGINES
DE3806266A1 (en) * 1987-03-07 1988-09-15 Volkswagen Ag Piston cooling for a reciprocating piston internal combustion engine
DE19633167A1 (en) * 1996-08-17 1998-02-19 Porsche Ag Spray nozzle for the piston cooling of an internal combustion engine
DE19902928C1 (en) * 1999-01-26 2000-08-24 Daimler Chrysler Ag Lubrication system for piston group of internal combustion engine, with closed circuit including device for wetting cylinder surface
DE19933363A1 (en) * 1999-07-20 2001-02-01 Daimler Chrysler Ag Device for cooling and / or lubricating a reciprocating piston internal combustion engine
DE19943516B4 (en) * 1999-09-11 2017-01-19 Schaeffler Technologies AG & Co. KG nozzle valve
JP3966039B2 (en) * 2002-03-15 2007-08-29 トヨタ自動車株式会社 Engine lubrication equipment
JP4211352B2 (en) * 2002-10-22 2009-01-21 アイシン精機株式会社 Engine oil supply device

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142484A (en) * 1975-09-05 1979-03-06 Daimler-Benz Aktiengesellschaft Piston for internal combustion engine
US4204487A (en) * 1977-04-28 1980-05-27 David Brown Tractors Limited Internal combustion engines
US4270562A (en) * 1979-09-28 1981-06-02 Caterpillar Tractor Co. Fluid sequence bypass apparatus
US4579093A (en) * 1984-06-06 1986-04-01 American Fits Engine Company, Limited Fuel injection, two cycle engine
US4738330A (en) * 1985-03-22 1988-04-19 Nippondenso Co., Ltd. Hydraulic drive system for use with vehicle power steering pump
US5819692A (en) * 1997-05-01 1998-10-13 Schafer; Timothy Vernon Piston cooling oil control valve
US20070034189A1 (en) * 2002-07-12 2007-02-15 Isao Kanno Watercraft propulsion system and control method of the system
US20040187835A1 (en) * 2003-03-28 2004-09-30 Caterpillar Inc. Fluid delivery control system
US7152623B2 (en) * 2003-09-09 2006-12-26 Metaldyne Company, Llc Fluid jet for providing fluid under pressure to a desired location
US6907848B2 (en) * 2003-10-09 2005-06-21 General Motors Corporation Connecting rod with lubricant tube
US6866011B1 (en) * 2003-10-09 2005-03-15 General Motors Corporation Block-mounted piston squirter
US20050257763A1 (en) * 2004-05-20 2005-11-24 Atsushi Watanabe Valve timing control apparatus
US7082906B2 (en) * 2004-06-25 2006-08-01 Shaw Aero Devices Inc. Piston cooling system
US20060169224A1 (en) * 2005-01-03 2006-08-03 Ingo Lenz Piston-cooling arrangement for an internal combustion engine
US20060223670A1 (en) * 2005-03-31 2006-10-05 Honda Motor Co., Ltd. Hydraulic circuit control device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060243226A1 (en) * 2005-05-02 2006-11-02 Bontaz Centre Controlled leakage valve for piston cooling nozzle
US7350484B2 (en) * 2005-05-02 2008-04-01 Bontaz Centre Controlled leakage valve for piston cooling nozzle
US20110276249A1 (en) * 2010-05-10 2011-11-10 GM Global Technology Operations LLC Method to operate an electrically driven opcj valve of an internal combustion engine
WO2012120213A1 (en) * 2011-03-10 2012-09-13 Peugeot Citroen Automobiles Sa Combustion engine lubrication system comprising a variable-displacement oil pump
FR2972488A1 (en) * 2011-03-10 2012-09-14 Peugeot Citroen Automobiles Sa THERMAL ENGINE LUBRICATING SYSTEM COMPRISING A VARIABLE CYLINDER OIL PUMP
US8955474B1 (en) * 2011-04-14 2015-02-17 Patrick J. Derbin Closed loop electronic control for the reduction of soot produced in diesel, gasoline and alternative-fueled engines
US20130179049A1 (en) * 2012-01-11 2013-07-11 Ford Global Technologies, Llc Method and device for operating a lubricating system of a combustion engine
US20170167371A1 (en) * 2015-12-10 2017-06-15 Hyundai Motor Company Method for preventing piston oil-up and engine employing the same
CN106870158A (en) * 2015-12-10 2017-06-20 现代自动车株式会社 For the method for preventing piston machine oil from rising and the engine using the method
US9995215B2 (en) * 2015-12-10 2018-06-12 Hyundai Motor Company Method for preventing piston oil-up and engine employing the same
US20170241373A1 (en) * 2016-02-18 2017-08-24 Man Truck & Bus Ag Piston for a reciprocating-piston internal combustion engine
US10502158B2 (en) * 2016-02-18 2019-12-10 Man Truck & Bus Ag Piston for a reciprocating-piston internal combustion engine

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WO2005100758A1 (en) 2005-10-27
EP1743091A1 (en) 2007-01-17
DE102004017909A1 (en) 2005-11-10

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Owner name: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT, GERMA

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STCB Information on status: application discontinuation

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