US20120048228A1 - System for controlling hydraulic pressure and flow rate of oil in engine and control method thereof - Google Patents

System for controlling hydraulic pressure and flow rate of oil in engine and control method thereof Download PDF

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Publication number
US20120048228A1
US20120048228A1 US12/953,264 US95326410A US2012048228A1 US 20120048228 A1 US20120048228 A1 US 20120048228A1 US 95326410 A US95326410 A US 95326410A US 2012048228 A1 US2012048228 A1 US 2012048228A1
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United States
Prior art keywords
oil
engine
solenoid valve
flow rate
controlling
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Abandoned
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US12/953,264
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English (en)
Inventor
Youngrock Chung
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.)
Hyundai Motor Co
Kia Corp
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Hyundai Motor Co
Kia Motors Corp
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Publication date
Application filed by Hyundai Motor Co, Kia Motors Corp filed Critical Hyundai Motor Co
Assigned to HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION reassignment HYUNDAI MOTOR COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUNG, YOUNGROCK
Publication of US20120048228A1 publication Critical patent/US20120048228A1/en
Abandoned legal-status Critical Current

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    • 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
    • F01M1/16—Controlling lubricant pressure or quantity
    • 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
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/005—Controlling temperature of lubricant

Definitions

  • the present invention relates to a system for controlling hydraulic pressure and flow rate of oil in an engine and a control method thereof, and more particularly, to a system for controlling hydraulic pressure and flow rate of oil in an engine that can prevent frictional loss due to hydraulic pressure and unnecessary consumption of oil, by controlling the opening of a solenoid valve mounted in each channel in accordance with the speed and load of the engine and temperature of the oil to supply oil corresponding to the minimum flow rate required by each gallery, and a control method thereof.
  • the parts in the engine make friction therebetween when generating power and the friction of the parts may reduce the power and decrease the life span of the engine.
  • heat is generated with combustion in the combustion chambers by the pistons in the engine and the inside of the engine is cooled by supplying oil into the engine.
  • the oil pump that supplies the oil into the engine operates in proportion to the operational speed of the engine.
  • the oil discharged from the oil pump is supplied to the main and head gallery of the engine through an oil cooler for cooling and an oil filter for filtering.
  • the oil pressure is different at the oil pump and at the main and head gallery due to hydraulic pressure loss generated through the oil cooler or the oil filter or flow restrictors.
  • the oil pressure should be set high at the oil pump in order to achieve the desired oil pressure at the main and head gallery.
  • Various aspects of the present invention are directed to provide a system for controlling hydraulic pressure and flow rate of oil in an engine that can prevent frictional loss due to hydraulic pressure and unnecessary consumption of oil, by controlling the opening of a solenoid valve mounted in each channel in accordance with the speed and load of the engine and temperature of the oil to supply oil corresponding to the minimum flow rate required by each gallery, and a control method thereof.
  • the system for controlling hydraulic pressure and flow rate of oil in an engine may include a first solenoid valve disposed in a channel connecting an inlet and an outlet of an oil pump supplying oil from an oil pan to the engine, and an electronic controller controlling the first solenoid valve on the basis of number of revolution of the engine, load of the engine, and temperature of the oil.
  • the system for controlling hydraulic pressure and flow rate of oil in the engine may further include a second solenoid valve disposed in a channel connecting an inlet and an outlet of an oil cooler connected to the oil pump so as to cool the oil at the outlet of the oil pump, and controlled to operate by the electronic controller.
  • the system for controlling hydraulic pressure and flow rate of oil in the engine may further may include a third solenoid valve disposed in a channel connecting the oil pump to a piston cooling gallery supplying the oil discharged through the outlet of the oil pump to a piston cooling jet disposed to distribute the oil to pistons, and controlled by the electronic controller to control flow rate of the oil to the piston cooling gallery.
  • the system for controlling hydraulic pressure and flow rate of oil in the engine may further include a fourth solenoid valve disposed in a channel connecting the oil pump to a head oil gallery supplying the oil discharged through the outlet of the oil pump to a cylinder head, and controlled by the electronic controller to control flow rate of the oil supplied to the head oil gallery.
  • the system for controlling hydraulic pressure and flow rate of oil in an engine may include a first solenoid valve disposed in a channel connecting an inlet and an outlet of an oil pump supplying oil from an oil pan to the engine, a second solenoid valve disposed in a channel connecting an inlet and an outlet of an oil cooler connected with the outlet of the oil pump and cooling the oil discharged from the oil pump, a third solenoid valve disposed in a channel formed between an oil filter and a piston cooling gallery supplying the oil to piston cooling jets such that the oil may be distributed to pistons, and controlling flow rate of the oil to the piston cooling gallery, a fourth solenoid valve disposed in a channel formed between the oil filter and a head oil gallery supplying the oil filtered through the oil filter connected with the oil cooler to a cylinder head, and controlling flow rate of the oil supplied to the head oil gallery, and an electronic controller controlling the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve, on
  • the method of controlling a system for controlling hydraulic pressure and flow rate of oil in an engine may include the steps of sensing engine parameters including number of revolution of the engine, load of the engine, and oil temperature by using sensors in a vehicle, controlling a second solenoid valve that controls flow rate supplied to an oil cooler connected to an oil pump when the sensed engine parameters may be lower or higher than reference values of the engine parameters, controlling a third solenoid valve that controls flow rate supplied to a piston cooling gallery from the oil pump when the sensed engine parameters may be lower or higher than reference values of the engine parameters, controlling a fourth solenoid valve that controls flow rate supplied to a head gallery from the oil pump on the basis of the sensed parameters, and controlling a first solenoid valve that controls flow rate supplied to a main gallery from the oil pump on the basis of operational states of the second solenoid valve, the third solenoid valve, and the fourth solenoid valve, and the sensed parameters, wherein one of the sensed engine parameters in controlling the second solenoid valve may be oil temperature.
  • a system for controlling hydraulic pressure and flow rate of oil in an engine and a control method thereof according to the present invention make it possible to prevent frictional loss due to hydraulic pressure and unnecessary consumption of oil, by controlling the opening of a solenoid valve mounted in each channel in accordance with the speed and load of the engine and temperature of the oil to supply oil corresponding to the minimum flow rate required by each gallery.
  • FIG. 1 is a diagram illustrating a system for controlling hydraulic pressure and flow rate of oil in an engine according to an exemplary embodiment of the present invention.
  • FIG. 2 is a flowchart illustrating a control method of the system for controlling hydraulic pressure and flow rate of oil in an engine shown in FIG. 1 .
  • an oil pump 12 pumps up oil from an oil pan 11 connected with the inlet and discharges the oil through the outlet.
  • the oil is sent under predetermined pressure to an oil cooler 13 connected with the outlet of oil pump 12 and cooled through oil cooler 13 .
  • the oil cooled through oil cooler 13 is filtered through an oil filter 14 and supplied to a main oil gallery 16 in the cylinder block of the engine.
  • the oil supplied to main oil gallery 16 is supplied to each main bearing journals of the cylinder block.
  • the oil filtered through oil filter 14 is supplied to a head oil gallery 15 in the cylinder head of the engine.
  • the oil supplied to head oil gallery 15 is supplied to the locker shaft of the cylinder head and into the cylinder head.
  • the oil filtered through oil filter 14 is supplied to a piston cooling gallery 17 in the cylinder block of the engine.
  • the oil supplied to piston cooling gallery 17 is supplied to each piston through a plurality of piston cooling jet 18 .
  • a system 100 for controlling hydraulic pressure and flow rate of oil in an engine includes a first solenoid valve Vs 1 in the channel connecting the inlet with the outlet of oil pump 12 , such that it can prevent hydraulic pressure from excessively increasing at the outlet of oil pump 12 by controlling the opening of the channel between the inlet and the outlet of oil pump 12 , in accordance with the oil temperature and the vehicle speed.
  • First solenoid valve Vs 1 is electrically connected with an electronic controller 110 and controlled to operate by the electronic controller 110 .
  • Oil pump 12 operates in proportion to the engine speed, and even if oil pump 12 operates at the same speed, the hydraulic pressure is high when the oil temperature is low and the hydraulic pressure is relatively low when the oil temperature is high, as compared with when the oil temperature is low.
  • electronic controller 110 controls first solenoid valve Vs 1 such that the hydraulic pressure from oil pump 12 is controlled in accordance with the oil temperature and the vehicle speed, in order to prevent the pressure of the oil discharged from oil pump 12 , which operates in proportion to the engine speed, from increasing when the oil temperature is low.
  • electronic controller 110 controls first solenoid valve Vs 1 such that desired hydraulic pressure required for main oil gallery 16 is supplied, in accordance with the engine speed and the engine load in the cold period where the oil temperature is low.
  • system 100 for controlling hydraulic pressure and flow rate of oil in an engine further includes a second solenoid valve Vs 2 between the inlet and the outlet of oil cooler 13 . That is, second solenoid valve Vs 2 controls flow rate in the channel connecting the outlet of oil pump 12 and the inlet of oil filter 14 .
  • Second solenoid valve Vs 2 is controlled to open the channel between the inlet and the outlet of oil cooler 13 by electronic controller 110 in accordance with the oil temperature such that the oil discharged from oil pump 12 is directly supplied to oil filter 14 , without being cooled through oil cooler 13 .
  • electronic controller 110 can prevent pressure loss through oil cooler 13 by opening second solenoid valve Vs 2 such that the oil discharged from oil pump 12 is directly supplied to oil filter 14 , without operating oil cooler 13 , when the oil temperature is low.
  • system 100 for controlling hydraulic pressure and flow rate of oil in an engine further includes a third solenoid valve Vs 3 between the outlet of oil filter 14 and piston cooling gallery 17 .
  • Third solenoid valve Vs 3 controls the amount of oil supplied to piston cooling gallery 17 on the basis of the number of revolution of engine, the engine load, and the oil temperature.
  • Third solenoid valve Vs 3 controls unnecessary excessive supply of oil to a piston cooling jet 18 , while the vehicle travels at a low speed, on the basis of the number of revolution of engine, the engine load, and the oil temperature.
  • the engine load may be determined from the position of the driving gear of the vehicle, the amount of fuel, and the temperature of cooling water.
  • Electronic controller 110 can prevent oil supply to piston cooling gallery 17 by closing third solenoid valve Vs 3 while the vehicle travels at a low speed under a predetermined speed.
  • electronic controller 110 controls the hydraulic pressure at the outlet of oil pump 12 by operating third solenoid valve Vs 3 in accordance with the vehicle speed and the oil temperature.
  • system 100 for controlling hydraulic pressure and flow rate of oil in an engine further includes a fourth solenoid valve Vs 4 between the outlet of oil filter 14 and head oil gallery 15 .
  • Fourth solenoid valve Vs 4 controls the amount of oil supplied to head oil gallery 15 on the basis of the revolution number of engine, the engine load, and the oil temperature.
  • the opening of fourth solenoid valve Vs 4 is controlled by electronic controller 110 on the basis of the number of revolution of engine, the engine load, and the oil temperature, to supply the minimum amount of oil required for head oil gallery 15 .
  • the engine load may be determined from the position of the driving gear of the vehicle, the amount of fuel, and the temperature of cooling water.
  • fourth solenoid valve Vs 4 the more the hydraulic pressure applied to main oil gallery 16 decreases.
  • second solenoid valve Vs 2 open the hydraulic pressure applied to main oil gallery 16 decreases, while the smaller the opening of third solenoid valve Vs 3 , the more the hydraulic pressure applied to main oil gallery 16 decreases.
  • electronic controller 110 controls the opening of first solenoid valve Vs 1 to prevent the flow rate to main oil gallery 16 from decreasing, in accordance with the opening of second solenoid valve Vs 2 , third solenoid valve Vs 3 , and fourth solenoid valve Vs 4 , thereby re-compensating the flow rate from oil pump 12 to the desired flow rate.
  • first solenoid valve Vs 1 second solenoid valve Vs 2 , third solenoid valve Vs 3 , and fourth solenoid valve Vs 4 of system 100 for controlling hydraulic pressure and flow rate of oil in an engine is shown in FIG. 1 , at least only any one of solenoid valves Vs 1 , Vs 2 , Vs 3 , and Vs 4 may be included, for the features of the engine of the vehicle.
  • first solenoid valve Vs 1 , second solenoid valve Vs 2 , third solenoid valve Vs 3 , and fourth solenoid valve Vs 4 are controlled by electronic controller 110 in accordance with the engine speed, the engine load, and the oil temperature, in system 100 for controlling hydraulic pressure and flow rate of oil in an engine, it is possible to supply flow rate corresponding to the desired minimum flow rate required for each gallery. Therefore, it is possible to reduce frictional pressure applied to the oil pump and improve fuel efficiency by preventing unnecessarily excessive flow rate and frictional loss due to the increase of hydraulic pressure.
  • a method of controlling system 100 for controlling hydraulic pressure and flow rate of oil in an engine show in FIG. 1 includes measuring parameters (S 1 ), controlling second solenoid valve (S 2 ), controlling third solenoid valve (S 3 ), controlling fourth solenoid valve (S 4 ), and controlling first solenoid valve (S 5 ), as shown in FIG. 2 .
  • the method of controlling system 100 for controlling hydraulic pressure and flow rate of oil in an engine is described with reference to system 100 for controlling hydraulic pressure and flow rate of oil in an engine shown in FIG. 1 .
  • Sensing parameters transmitting parameters measured by sensors of the vehicle to electronic controller 110 is first performed to measure the number of revolution of engine, the engine load, and the oil temperature.
  • the engine load may be determined from the position of the driving gear of the vehicle, the amount of fuel, and the temperature of cooling water.
  • Electronic controller 110 performs the controlling of solenoid valves for controlling solenoid valves Vs 1 , Vs 2 , Vs 3 , and Vs 4 (S 2 , S 3 , S 4 , and S 5 ) after comparing the transmitted parameter values Pa with reference values.
  • Electronic controller 110 determines whether the sensed oil temperature To is smaller than a reference temperature A to perform the controlling of second solenoid valve (S 2 ) (S 21 ). Electronic controller 110 closes second solenoid valve Vs 2 (S 23 ) to supply the oil cooled through oil cooler 13 to oil filter 14 , when determining that the oil temperature To is higher than the reference temperature A.
  • Electronic controller 110 can prevent the pressure from being reduced by oil cooler 13 by opening second solenoid valve Vs 2 (S 22 ) such that the oil bypasses, without operating oil cooler 13 , when the oil temperature To is smaller than the reference temperature A.
  • Electronic controller 110 controls the flow rate to main oil gallery 16 by controlling second solenoid valve Vs 2 on the basis of the amount of opening estimated from parameter values 19 .
  • electronic controller 110 compares the parameter values Pa transmitted to perform the controlling of third solenoid valve (S 3 ) with reference values Th (S 31 ).
  • electronic controller 110 determines that the vehicle is traveling at a low speed, and prevents the oil supply to piston cooling gallery 17 by closing third solenoid valve Vs 3 (S 32 ), when the number of revolution of engine in the parameter values Pa is less than the reference number of revolution Th.
  • Electronic controller 110 controls the amount of opening of third solenoid valve such that the desired flow rate required by piston cooling gallery 17 in accordance with the number of revolution of engine, the engine load, and the oil temperature is supplied, when the parameter values Pa are larger than the reference values.
  • Electronic controller 110 controls the amount of opening of fourth solenoid valve Vs 4 (S 4 ) to supply the desired flow rate required for head oil gallery 15 in accordance with the number of revolution of engine, the engine load, and the oil temperature, which are the parameter values Pa, in order to perform the controlling of fourth solenoid valve.
  • Electronic controller 110 calculates the amount of opening of first solenoid valve Vs 1 for supplying the desired flow rate required for main oil gallery 16 (S 51 ), in accordance with the operational states of second solenoid valve Vs 2 , third solenoid valve Vs 3 , and fourth solenoid valve Vs 4 , and the number of revolution of engine, the engine load, and the oil temperature, which are the parameter values Pa, in order to perform the controlling of fifth solenoid valve (S 5 ). Further, electronic controller 110 controls first solenoid valve Vs 1 to be opened as much as the calculated amount of opening of first solenoid valve Vs 1 (S 52 ).
  • first solenoid valve Vs 1 , second solenoid valve Vs 2 , third solenoid valve Vs 3 , and fourth solenoid valve Vs 4 are controlled by electronic controller 110 in accordance with the engine speed, the engine load, and the oil temperature, in the method of controlling system 100 for controlling hydraulic pressure and flow rate of oil in an engine, it is possible to supply flow rate corresponding to the desired minimum flow rate required for each gallery. Therefore, it is possible to reduce frictional pressure applied to the oil pump and improve fuel efficiency by preventing unnecessarily excessive flow rate and frictional loss due to the increase of hydraulic pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
US12/953,264 2010-08-31 2010-11-23 System for controlling hydraulic pressure and flow rate of oil in engine and control method thereof Abandoned US20120048228A1 (en)

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KR1020100084694A KR101199091B1 (ko) 2010-08-31 2010-08-31 엔진 유압 및 유량 제어 시스템 및 그의 제어 방법
KR10-2010-0084694 2010-08-31

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DE (1) DE102010061093A1 (ko)

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US20130092108A1 (en) * 2011-10-17 2013-04-18 Ford Global Technologies, Llc Method for Warming an Internal Combustion Engine, and Internal Combustion Engine
US20130139768A1 (en) * 2011-01-11 2013-06-06 Mitsubishi Heavy Industries, Ltd. Cooling device for engine
US20130151113A1 (en) * 2011-12-13 2013-06-13 Kia Motors Corporation Oil pump control system for vehicle
US20130153338A1 (en) * 2011-04-13 2013-06-20 Nissan Motor Co., Ltd. Lubrication control device for in-wheel motor unit for vehicle
EP2818652A1 (en) * 2013-06-27 2014-12-31 Volvo Car Corporation Lubrication system for combustion engine
US20150027389A1 (en) * 2011-03-14 2015-01-29 Ford Global Technologies, Llc Lubrication system for an internal combustion engine, and method for lubrication
US20150047581A1 (en) * 2012-04-17 2015-02-19 Fpt Industrial S.P.A. Method for controlling a piston cooling circuit of an internal combustion engine of an industrial vehicle
DE102016113812A1 (de) 2016-07-27 2018-02-01 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Schmiermittelkreislauf für eine Verbrennungskraftmaschine
US20180058277A1 (en) * 2016-08-24 2018-03-01 Ford Global Technologies, Llc Method and apparatus to regulate oil pressure via controllable piston cooling jets
JP2018178763A (ja) * 2017-04-04 2018-11-15 いすゞ自動車株式会社 オイル冷却装置
EP2918799B1 (en) * 2012-11-07 2019-04-17 Nissan Motor Company, Limited Oil supply device for internal combustion engine
WO2020043290A1 (en) 2018-08-30 2020-03-05 Volvo Truck Corporation Oil system and method of controlling oil system
JP2020037932A (ja) * 2018-09-06 2020-03-12 本田技研工業株式会社 内燃機関の制御装置
US20200318506A1 (en) * 2017-12-29 2020-10-08 Volvo Truck Corporation A fluid circuit and a process for controlling a flow of fluid supplied to at least one equipment

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US20130139768A1 (en) * 2011-01-11 2013-06-06 Mitsubishi Heavy Industries, Ltd. Cooling device for engine
US9181849B2 (en) * 2011-01-11 2015-11-10 Mitsubishi Heavy Industries, Ltd. Cooling device for engine
US20150027389A1 (en) * 2011-03-14 2015-01-29 Ford Global Technologies, Llc Lubrication system for an internal combustion engine, and method for lubrication
US10215066B2 (en) 2011-03-14 2019-02-26 Ford Global Technologies, Llc Lubrication system for an internal combustion engine, and method for lubrication
US9593621B2 (en) * 2011-03-14 2017-03-14 Ford Global Technologies, Llc Lubrication system for an internal combustion engine, and method for lubrication
US9726057B2 (en) * 2011-04-13 2017-08-08 Nissan Motor Co., Ltd. Lubrication control device for in-wheel motor unit for vehicle
US20130153338A1 (en) * 2011-04-13 2013-06-20 Nissan Motor Co., Ltd. Lubrication control device for in-wheel motor unit for vehicle
US9976471B2 (en) 2011-10-17 2018-05-22 Ford Global Technologies, Llc Method for warming an internal combustion engine, and internal combustion engine
US20130092108A1 (en) * 2011-10-17 2013-04-18 Ford Global Technologies, Llc Method for Warming an Internal Combustion Engine, and Internal Combustion Engine
US9004020B2 (en) * 2011-10-17 2015-04-14 Ford Global Technologies, Llc Method for warming an internal combustion engine, and internal combustion engine
US20130151113A1 (en) * 2011-12-13 2013-06-13 Kia Motors Corporation Oil pump control system for vehicle
US9803521B2 (en) * 2012-04-17 2017-10-31 Fpt Industrial S.P.A. Method for controlling a piston cooling circuit of an internal combustion engine of an industrial vehicle
US20150047581A1 (en) * 2012-04-17 2015-02-19 Fpt Industrial S.P.A. Method for controlling a piston cooling circuit of an internal combustion engine of an industrial vehicle
US10677117B2 (en) 2012-11-07 2020-06-09 Nissan Motor Co., Ltd. Oil supply device for internal combustion engine
EP2918799B1 (en) * 2012-11-07 2019-04-17 Nissan Motor Company, Limited Oil supply device for internal combustion engine
US9334765B2 (en) 2013-06-27 2016-05-10 Volvo Car Corporation Engine oil system
EP2818652A1 (en) * 2013-06-27 2014-12-31 Volvo Car Corporation Lubrication system for combustion engine
DE102016113812A1 (de) 2016-07-27 2018-02-01 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Schmiermittelkreislauf für eine Verbrennungskraftmaschine
US20180058277A1 (en) * 2016-08-24 2018-03-01 Ford Global Technologies, Llc Method and apparatus to regulate oil pressure via controllable piston cooling jets
CN107781022A (zh) * 2016-08-24 2018-03-09 福特环球技术公司 经由可控制的活塞冷却喷嘴调节油压的方法和装置
GB2553288A (en) * 2016-08-24 2018-03-07 Ford Global Tech Llc A method of regulating oil pressure within an engine assembly
GB2553288B (en) * 2016-08-24 2021-02-24 Ford Global Tech Llc A method and apparatus to regulate oil pressure via controllable piston cooling jets
JP2018178763A (ja) * 2017-04-04 2018-11-15 いすゞ自動車株式会社 オイル冷却装置
US20200318506A1 (en) * 2017-12-29 2020-10-08 Volvo Truck Corporation A fluid circuit and a process for controlling a flow of fluid supplied to at least one equipment
US11598230B2 (en) * 2017-12-29 2023-03-07 Volvo Truck Corporation Fluid circuit and a process for controlling a flow of fluid supplied to at least one equipment
WO2020043290A1 (en) 2018-08-30 2020-03-05 Volvo Truck Corporation Oil system and method of controlling oil system
US11199115B2 (en) 2018-08-30 2021-12-14 Volvo Truck Corporation Oil system and method of controlling oil system
JP2020037932A (ja) * 2018-09-06 2020-03-12 本田技研工業株式会社 内燃機関の制御装置
US10788038B2 (en) 2018-09-06 2020-09-29 Honda Motor Co., Ltd. Control device for internal combustion engine

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KR101199091B1 (ko) 2012-11-08
KR20120020825A (ko) 2012-03-08
DE102010061093A1 (de) 2012-03-01
CN102383896A (zh) 2012-03-21

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