KR19980047413A - Discharge flow rate variable device for vehicle oil pump - Google Patents

Discharge flow rate variable device for vehicle oil pump Download PDF

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Publication number
KR19980047413A
KR19980047413A KR1019960065904A KR19960065904A KR19980047413A KR 19980047413 A KR19980047413 A KR 19980047413A KR 1019960065904 A KR1019960065904 A KR 1019960065904A KR 19960065904 A KR19960065904 A KR 19960065904A KR 19980047413 A KR19980047413 A KR 19980047413A
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South Korea
Prior art keywords
outer gear
flow rate
gear
discharge flow
oil pump
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KR1019960065904A
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Korean (ko)
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KR100208490B1 (en
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이세영
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박병재
현대자동차 주식회사
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Publication of KR19980047413A publication Critical patent/KR19980047413A/en
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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
    • F01M1/02—Pressure lubrication using lubricating pumps
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0253—Pressure lubrication using lubricating pumps characterised by the pump driving 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
    • F01M2250/00—Measuring

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

본 발명은 주위 온도변화 및 주행조건에 따라 내1Q외측기어의 물림면적을 가변화시켜 토출유량이 가변되게 하므로서 최적의 윤활성능을 얻고자 차량용 오일펌프의 토출유량가변장치에 관한 것이다.The present invention relates to an apparatus for varying the discharge flow rate of an oil pump for a vehicle in order to obtain optimum lubrication performance by varying the bite area of the inner 1Q outer gear in accordance with ambient temperature change and driving conditions.

실린더블럭(10)과 프론트케이스(20)사이에 설치하여 회전하는 외측기어(40)와,An outer gear 40 rotating between the cylinder block 10 and the front case 20 and rotating;

크랭크축(30)의 끝단부에 일체로 고정되어 외측기어(40)와 맞물려서 회전력을 전달하는 내측기어(50)로 구성된 오일펌프에 있어서, 수신되는 주위 온도변화 및 주행조건등과 미리 입력된 데이타를 비교판단하는 제어부(60)와,In the oil pump composed of the inner gear 50 which is integrally fixed to the end of the crankshaft 30 and engaged with the outer gear 40 to transmit the rotational force, the received ambient temperature change, running conditions and the like and pre-input data And a control unit 60 for judging

제어부(60)의 신호를 받아서 유로를 전환시켜 주는 솔레노이드밸브(70)와,Solenoid valve 70 for switching the flow path in response to the signal from the control unit 60,

프론트케이스(20)의 벽면에 고정되어 솔레노이드밸브(70)의 유로전환에 따라 유압의 공급 및 회수되도록 하는 링형상의 플런저(80)와,A ring-shaped plunger 80 fixed to a wall surface of the front case 20 so as to supply and recover hydraulic pressure according to the flow path switching of the solenoid valve 70;

플런저(80)에 출몰되게 설치하여 유압의 공급시 외측기어(40)를 밀어서 내측기어(50)와의 물림면적을 크게 하는 링형상의 피스톤(90)과,A ring-shaped piston 90 installed to plunger 80 to push the outer gear 40 to increase the bite area with the inner gear 50 when hydraulic pressure is supplied,

플런저(80)내에 설치하여 유압의 소멸시 외측기어(40)를 탄력있게 지지하는 탄력수단(100)과,An elastic means (100) installed in the plunger (80) to elastically support the outer gear (40) when the hydraulic pressure is extinguished;

실린더블럭(10)과 외측기어(40)사이에 탄력있게 설치하여 유압의 소멸시 내1Q외측기어(50)(40)의 물림면적을 최소화되도록 외측기어(40)를 가압하는 리턴탄력수단(110)으로 차량용 오일펌프의 토출유량가변장치를 구성하여, 주위 온도변화 및 주행조건에 따라 내1Q외측기어의 물림면적을 가변화시켜 토출유량이 가변되게 하므로서, 시동초기의 냉시동시 및 고온1Q고부하시에는 토출유량의 증가로 초기 내마모성의 향상 및 최적의 윤활성능을 유지할 수가 있고, 엔진내의 토출유량과다시 발생되는 이레이션을 방지하며, 윤활성능의 향상에 따른 연비향상 및 엔진베어링등의 내구성을 향상시킬 수 있는 효과가 있다.Return elastic means 110 for elastically installing between the cylinder block 10 and the outer gear 40 to pressurize the outer gear 40 so as to minimize the bite area of the inner 1Q outer gear 50, 40 when the hydraulic pressure is extinguished. ), The discharge flow rate variable device of the vehicle oil pump is configured, and the discharge flow rate is varied by varying the bite area of the inner 1Q outer gear according to the change of ambient temperature and driving conditions, so that the discharge flow rate is variable at the initial start-up and at high temperature 1Q. Increased discharge flow rate improves initial wear resistance and maintains optimum lubrication performance, prevents recurrence of discharge flow rate in the engine, and improves fuel efficiency and engine bearing durability by improving lubrication performance. It can be effected.

Description

차량용 오일펌프의 토출유량가변장치Discharge flow rate variable device for vehicle oil pump

본 발명은 주위 온도변화 및 주행조건에 따라 내1Q외측기어의 물림면적을 가변화시켜 토출유량이 가변되게 하므로서 최적의 윤활성능을 얻고자 차량용 오일펌프의 토출유량가변장치에 관한 것이다.The present invention relates to an apparatus for varying the discharge flow rate of an oil pump for a vehicle in order to obtain optimum lubrication performance by varying the bite area of the inner 1Q outer gear in accordance with ambient temperature change and driving conditions.

종래의 오일펌프는 도 2와 같이, 실린더블럭(1)과 프론트케이스(2)사이에 설치하여 회전하는 외측기어(3)와, 크랭크축(4)의 끝단부에 일체로 고정되어 외측기어(3)와 맞물려서 회전력을 전달하는 내측기어(5)로 구성되어 있다.The conventional oil pump, as shown in Figure 2, is installed between the cylinder block 1 and the front case 2, the outer gear (3) to rotate and the end of the crank shaft (4) integrally fixed to the outer gear ( It is composed of the inner gear (5) in engagement with 3) to transmit the rotational force.

오일펌프의 작동원리는 크랭크축(4)은 구동력에 의하여 내측기어(5)가 회전하게 되고, 내측기어(5)의 회전시 내측기어(5)와 맞물린 외측기어(3)도 동시에 회전하며, 내1Q외측기어(5)(3)의 상호 맞물림면적에 의하여 오일팬내의 오일을 흡입하는 동시에 오일필터로 토출하도록 되어 있다.The operating principle of the oil pump is that the crankshaft 4 rotates the inner gear 5 by the driving force, and when the inner gear 5 rotates, the outer gear 3 engaged with the inner gear 5 also rotates at the same time. The interlocking areas of the inner 1Q outer gears 5 and 3 suck the oil in the oil pan and discharge the oil into the oil filter.

그런데 종래의 오일펌프는 상호 맞물린 내1Q외측기어(5)(3)의 물림면적이 일정하여 엔진의 회전수변화에 따른 토출유량도 항상 정해져 있어, 주위 온도변화 및 주행조건에 따른 적절한 유량공급이 되지 않아 냉시동시 초기마모 및 고온1Q고부하시의 토출압부족에 따른 이레이션(Aeration)등이 발생되었다.However, in the conventional oil pump, the bite area of the inner 1Q outer gears 5 and 3 interlocked with each other is constant, so that the discharge flow rate is always determined according to the engine speed change, so that the proper flow rate supply according to the ambient temperature change and the driving conditions As a result, initial wear during cold start and aeration occurred due to insufficient discharge pressure at high temperature 1Q and high load.

본 발명은 이러한 종래의 문제점을 해결하기 위하여, 주위 온도변화 및 주행조건에 따라 내1Q외측기어의 물림면적을 가변화시켜 토출유량이 가변되게 하므로서 최적의 윤활성능을 얻고자 차량용 오일펌프의 토출유량가변장치를 제공하는 데 그 목적이 있다.In order to solve the conventional problems, the discharge flow rate of the vehicle oil pump to obtain the optimum lubrication performance by varying the bite area of the inner 1Q outer gear in accordance with the ambient temperature change and driving conditions to vary the discharge flow rate The object is to provide a variable device.

본 발명은 이러한 목적을 달성하기 위한 기술적 수단으로서, 실린더블럭과 프론트케이스사이에 설치하여 회전하는 외측기어와, 크랭크축의 끝단부에 일체로 고정되어 외측기어와 맞물려서 회전력을 전달하는 내측기어로 구성된 오일펌프에 있어서,The present invention is a technical means for achieving the above object, the oil consisting of an outer gear that is installed between the cylinder block and the front case to rotate, and the inner gear which is integrally fixed to the end of the crankshaft to mesh with the outer gear to transmit the rotational force In the pump,

수신되는 주위 온도변화 및 주행조건등과 미리 입력된 데이타를 비교판단하는 제어부와, 제어부의 신호를 받아서 유로를 전환시켜 주는 솔레노이드밸브와, 프론트케이스의 벽면에 고정되어 솔레노이드밸브의 유로전환에 따라 유압의 공급 및 회수되도록 하는 링형상의 플런저와, 플런저에 출몰되게 설치하여 유압의 공급시 외측기어를 밀어서 내측기어와의 물림면적을 크게 하는 링형상의 피스톤과, 플런저내에 설치하여 유압의 소멸시 외측기어를 탄력있게 지지하는 탄력수단과, 실린더블럭과 외측기어사이에 탄력있게 설치하여 유압의 소멸시 내1Q외측기어의 물림면적을 최소화되도록 외측기어를 가압하는 리턴탄력수단으로 차량용 오일펌프의 토출유량가변장치를 구성한 것이 본 발명의 특징이다.A control unit that compares the received ambient temperature change and driving conditions with pre-input data, a solenoid valve that switches the flow path by receiving a signal from the control unit, and is fixed to the wall of the front case so that the hydraulic pressure is changed according to the flow path of the solenoid valve. Ring-shaped plunger for supplying and retrieving oil, a ring-shaped piston mounted to the plunger to push the outer gear during hydraulic supply to increase the bite area with the inner gear, and an outer side when the hydraulic extinction is installed in the plunger. Discharge flow rate of the vehicle oil pump as a resilient means for resiliently supporting the gear and a resilient means for resiliently installing between the cylinder block and the outer gear to pressurize the outer gear to minimize the bite area of the inner 1Q outer gear when the oil is extinguished. The configuration of the variable device is a feature of the present invention.

도 1은 본 발명의 개략적인 구성도1 is a schematic configuration diagram of the present invention

도 2는 종래 오일펌프의 개략적인 구성도2 is a schematic configuration diagram of a conventional oil pump

※ 도면중 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

10 : 실린더블럭 20 : 프론트케이스10: cylinder block 20: front case

30 : 크랭크축 40 : 외측기어30: crankshaft 40: outer gear

50 : 내측기어 60 : 제어부50: inner gear 60: control unit

70 : 솔레노이드밸브 80 : 플런저70 solenoid valve 80 plunger

90 : 피스톤 100 : 탄력수단90: piston 100: elastic means

110 : 리턴탄력수단110: return elastic means

이하 본 발명을 첨부된 실시예의 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 차량용 오일펌프의 토출유량가변장치를 나타낸 구조도로서, 부호10은 실린더블럭이며, 부호20은 실린더블럭(10)에 밀폐되게 조립되는 프론트케이스로서 실린더블럭(10)과의 공간을 종래보다 크게 형성한다.1 is a structural diagram showing the discharge flow rate variable device of the vehicle oil pump of the present invention, 10 is a cylinder block, 20 is a front case to be sealed to the cylinder block 10 as a space with the cylinder block 10 It is formed larger than the conventional.

부호30은 구동력을 전달하는 크랭크축이며, 그 크랭크축(30)의 끝단에 노출되게 크랭크축스프로켓(31)을 일체로 고정한다.Reference numeral 30 denotes a crankshaft for transmitting a driving force, and integrally fixes the crankshaft sprocket 31 so as to be exposed to the end of the crankshaft 30.

부호40은 실린더블럭(10)과 프론트케이스(20)사이에 설치하여 회전하는 외측기어로서, 크랭크축(30)의 축방향을 따라서 좌1Q우로 슬라이딩되게 한다.Reference numeral 40 is an outer gear installed between the cylinder block 10 and the front case 20 to rotate, and slides to the left 1Q right along the axial direction of the crankshaft 30.

부호50은 크랭크축(30)의 끝단부에 일체로 고정되어 외측기어(40)와 맞물려서 회전력을 전달하는 내측기어이다.Reference numeral 50 is an inner gear that is integrally fixed to the end of the crankshaft 30 and engaged with the outer gear 40 to transmit rotational force.

부호60은 수신되는 주위 온도변화 및 주행조건등과 미리 입력된 데이타를 비교판단하는 제어부이다.Reference numeral 60 denotes a control unit for comparing and determining the received ambient temperature change and driving conditions and the previously input data.

부호70은 제어부(60)의 신호를 받아서 유로를 전환시켜 주는 솔레노이드밸브이다.Reference numeral 70 denotes a solenoid valve that switches the flow path by receiving a signal from the controller 60.

부호80은 프론트케이스(20)의 벽면에 고정되어 솔레노이드밸브(70)의 유로전환에 따라 유압의 공급 및 회수되도록 하는 링형상의 플런저다.Reference numeral 80 is a ring-shaped plunger that is fixed to the wall of the front case 20 so that the hydraulic pressure is supplied and recovered in accordance with the flow path switching of the solenoid valve 70.

상기 솔레노이드밸브(70)와 플런저(80)는 유압라인(120)으로 연결하여 유압의 공급 및 회수되도록 한다.The solenoid valve 70 and the plunger 80 are connected to the hydraulic line 120 to supply and recover the hydraulic pressure.

부호90은 플런저(80)에 출몰되게 설치하여 유압의 공급시 외측기어(40)를 밀어서 내측기어(50)와의 물림면적을 크게 하는 링형상의 피스톤이다.Reference numeral 90 is a ring-shaped piston which is mounted to the plunger 80 to push the outer gear 40 to increase the bite area with the inner gear 50 when hydraulic pressure is supplied.

부호100은 플런저(80)내에 설치하여 유압의 소멸시 외측기어(40)를 탄력있게 지지하는 탄력수단이다.Reference numeral 100 is an elastic means installed in the plunger 80 to elastically support the outer gear 40 when the hydraulic pressure is extinguished.

부호110은 실린더블럭(10)과 외측기어(40)사이에 탄력있게 설치하여 유압의 소멸시 내1Q외측기어(50)(40)의 물림면적을 최소화되도록 외측기어(40)를 가압하는 리턴탄력수단이다.Reference numeral 110 denotes a resilient installation between the cylinder block 10 and the outer gear 40 to pressurize the outer gear 40 so as to minimize the bite area of the inner 1Q outer gear 50 and 40 when the hydraulic pressure is extinguished. Means.

상기 탄력수단(100)과 리턴탄력수단(110)은 본 발명에서 코일스프링을 사용하였으나 이와동일한 작용을 가진 것이라면 어떠한 것을 사용하여도 무방하며, 리턴탄력수단(110)의 탄발력이 탄력수단(100)보다 현저하게 스프링상수가 높은 것을 사용하되 외측기어(40)의 지나친 후퇴를 방지하여 최소한의 내1Q외측기어(50)(40)의 물림면적을 유지할 수 있을 정도로 지지하게 설계한다.The resilient means 100 and the return elastic means 110 is used in the present invention, but if the coil spring has the same action as any of these may be used, the elastic force of the return elastic means 110 is the elastic means (100) It is designed to support the spring constant significantly higher than) to prevent excessive retraction of the outer gear 40 so as to maintain a minimum bite area of the inner 1Q outer gear 50 and 40.

이하 본 발명의 차량용 오일펌프의 토출유량가변장치에 대한 작용을 설명하면 다음과 같다.Hereinafter, an operation of the discharge flow rate variable device of the vehicle oil pump according to the present invention will be described.

주위 온도변화 및 주행조건에 따라 그 신호를 제어부(60)가 받아서 솔레노이드밸브(70)를 작동시키게 된다.The control unit 60 receives the signal according to the ambient temperature change and the driving condition to operate the solenoid valve 70.

예컨데 솔레노이드밸브(70)로 공급되는 유압이 유압라인(120)을 통하여 플런저(80)로 공급되면 링형상의 플런저(80)내에 유압이 형성되어 링형상의 피스톤(90)을 밀어주게 되며, 피스톤(90)의 유압에 의하여 전진하게 되는 데 이때 리턴탄력수단(110)에 의하여 도면상 좌측으로 후퇴되어 있던 외측기어(40)는 피스톤(90)의 가압력에 의하여 도면상 우측으로 전진하여 내측기어(50)와의 물림면적을 크게 하고, 물림면적의 증가시 토출유량이 증가하게 된다.For example, when the hydraulic pressure supplied to the solenoid valve 70 is supplied to the plunger 80 through the hydraulic line 120, the hydraulic pressure is formed in the ring-shaped plunger 80 to push the piston 90 in the ring-shaped. 90, the outer gear 40, which has been retracted to the left in the drawing by the return elastic means 110, is advanced to the right in the drawing by the pressing force of the piston 90, and the inner gear ( The bite area with 50) is increased, and the discharge flow rate increases when the bite area is increased.

이와반대로 솔레노이드밸브(70)의 유로를 전환시켜 주게 되면 플런저(80)내에 작용하던 유압이 소멸하게 되므로 압축되어 있던 리턴탄력수단(110)의 탄발력이 작용하여 외측기어(40)를 도면상 좌측으로 후퇴시키게 되며, 외측기어(40)의 후퇴로 전진되어 있던 피스톤(90)도 동시에 후퇴하게 되므로 신장되어 있던 탄력수단(100)이 압축하면서 지나친 후퇴를 방지하는 동시에 최소한의 내1Q외측기어(50)(40)의 물림면적을 유지하도록 지지한다.On the contrary, if the flow path of the solenoid valve 70 is switched, the hydraulic pressure acting in the plunger 80 is extinguished. Therefore, the elastic force of the compressed return elastic means 110 is actuated and the outer gear 40 is left on the drawing. Since the piston 90, which was advanced by the retraction of the outer gear 40, is also retracted at the same time, the retracted elastic means 100 is compressed to prevent excessive retreat while compressing the minimum inner 1Q outer gear 50. Support 40 to maintain the bite area.

한편 플런저(80)내에 채워져 있던 유압은 솔레노이드밸브(70)를 통하여 오일팬으로 회수된다.On the other hand, the hydraulic pressure filled in the plunger 80 is recovered to the oil pan through the solenoid valve 70.

따라서 상술한 바와같은 작동원리를 이용하여 시동초기의 냉시동시 및 고온1Q고부하시에는 제어부(60)가 솔레노이드밸브(70)를 작동시켜 유압이 공급되게 하므로서 내1Q외측기어(50)(40)의 물림면적을 최대화하므로서 토출유량을 극대화시킬 수가 있는 것이다.Therefore, by using the operation principle as described above, during the cold start of the initial start and high temperature 1Q high load, the control unit 60 operates the solenoid valve 70 to supply the hydraulic pressure of the inner 1Q outer gear 50, 40 It is possible to maximize the discharge flow rate by maximizing the bite area.

이와같이 본 발명은 주위 온도변화 및 주행조건에 따라 내1Q외측기어의 물림면적을 가변화시켜 토출유량이 가변되게 하므로서, 시동초기의 냉시동시 및 고온1Q고부하시에는 토출유량의 증가로 초기 내마모성의 향상 및 최적의 윤활성능을 유지할 수가 있고, 엔진내의 토출유량과다시 발생되는 이레이션을 방지하며, 윤활성능의 향상에 따른 연비향상 및 엔진베어링등의 내구성을 향상시킬 수 있는 효과가 있다.As such, the present invention changes the bite area of the inner 1Q outer gear by varying the ambient temperature and the driving conditions, thereby varying the discharge flow rate. Thus, the initial wear resistance is improved by increasing the discharge flow rate during cold start-up and high temperature 1Q at the start-up. And it is possible to maintain the optimum lubrication performance, to prevent the occurrence of the discharge flow rate and recurrence in the engine, and to improve the fuel efficiency and the durability of the engine bearing, etc. according to the improvement of the lubrication performance.

Claims (1)

실린더블럭과 프론트케이스사이에 설치하여 회전하는 외측기어와, 크랭크축의 끝단부에 일체로 고정되어 외측기어와 맞물려서 회전력을 전달하는 내측기어로 구성된 오일펌프에 있어서,An oil pump comprising an outer gear that is installed between a cylinder block and a front case to rotate and an inner gear that is integrally fixed to the end of the crankshaft and engaged with the outer gear to transmit rotational force. 수신되는 주위 온도변화 및 주행조건등과 미리 입력된 데이타를 비교판단하는 제어부와, 제어부의 신호를 받아서 유로를 전환시켜 주는 솔레노이드밸브와, 프론트케이스의 벽면에 고정되어 솔레노이드밸브의 유로전환에 따라 유압의 공급 및 회수되도록 하는 링형상의 플런저와, 플런저에 출몰되게 설치하여 유압의 공급시 외측기어를 밀어서 내측기어와의 물림면적을 크게 하는 링형상의 피스톤과, 플런저내에 설치하여 유압의 소멸시 외측기어를 탄력있게 지지하는 탄력수단과, 실린더블럭과 외측기어사이에 탄력있게 설치하여 유압의 소멸시 내1Q외측기어의 물림면적을 최소화되도록 외측기어를 가압하는 리턴탄력수단으로 구성한 것을 특징으로 하는 차량용 오일펌프의 토출유량가변장치.A control unit that compares the received ambient temperature change and driving conditions with pre-input data, a solenoid valve that switches the flow path by receiving a signal from the control unit, and is fixed to the wall of the front case so that the hydraulic pressure is changed according to the flow path of the solenoid valve. Ring-shaped plunger for supplying and retrieving oil, a ring-shaped piston mounted to the plunger to push the outer gear during hydraulic supply to increase the bite area with the inner gear, and an outer side when the hydraulic extinction is installed in the plunger. Resilient means for supporting the gear elastically, and elastically installed between the cylinder block and the outer gear for the vehicle characterized in that the return elastic means for pressurizing the outer gear to minimize the bite area of the inner 1Q outer gear when the hydraulic pressure is extinguished Discharge flow rate variable device of oil pump.
KR1019960065904A 1996-12-14 1996-12-14 Oil pump KR100208490B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020043727A (en) * 2000-12-04 2002-06-12 이계안 Oil pump
KR20030048172A (en) * 2001-12-11 2003-06-19 현대자동차주식회사 Cylinder deactivation device using cam
KR100412615B1 (en) * 2001-12-17 2003-12-31 현대자동차주식회사 Lubricant apparatus for turbo charger when engine start

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020043727A (en) * 2000-12-04 2002-06-12 이계안 Oil pump
KR20030048172A (en) * 2001-12-11 2003-06-19 현대자동차주식회사 Cylinder deactivation device using cam
KR100412615B1 (en) * 2001-12-17 2003-12-31 현대자동차주식회사 Lubricant apparatus for turbo charger when engine start

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