KR20020001132A - Oil pump for engine - Google Patents

Oil pump for engine Download PDF

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Publication number
KR20020001132A
KR20020001132A KR1020000035298A KR20000035298A KR20020001132A KR 20020001132 A KR20020001132 A KR 20020001132A KR 1020000035298 A KR1020000035298 A KR 1020000035298A KR 20000035298 A KR20000035298 A KR 20000035298A KR 20020001132 A KR20020001132 A KR 20020001132A
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KR
South Korea
Prior art keywords
oil
engine
screw rotor
feed hole
oil feed
Prior art date
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KR1020000035298A
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Korean (ko)
Inventor
손병국
Original Assignee
이계안
현대자동차주식회사
류정열
기아자동차주식회사
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Application filed by 이계안, 현대자동차주식회사, 류정열, 기아자동차주식회사 filed Critical 이계안
Priority to KR1020000035298A priority Critical patent/KR20020001132A/en
Publication of KR20020001132A publication Critical patent/KR20020001132A/en

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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
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/16Controlling lubricant pressure or quantity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • F01M2001/0207Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238Rotary pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth

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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

PURPOSE: An engine oil pump is provided to supply lubricating oil with specific oil pressure without pulse by a screw rotor, to control noise of an engine and to improve endurance of the engine. CONSTITUTION: An engine oil pump comprises an oil feed hole(3) having a hollow shape by being mounted on a side portion of a cylinder block(1); an oil fan connected to a strainer by a suction pipe(5); a discharging pipe(7) connecting the oil cooler and the oil feed hole; a screw rotor(9) rotationally inserted to the oil feed hole; a first discharging port(11) connected to the discharging pipe; a second discharging port(13) formed by penetrating plural holes along a circumference; a drive gear(15) rotating the screw rotor by receiving power from the engine of the cylinder block; a bypass pipe(17) formed on a side of the discharging pipe; a safe valve(19) connected to the bypass pipe; and metal bearings(21,23) sealing by forming a frictional face on the oil feed hole on a rear and front sides of the screw rotor.

Description

엔진 오일펌프{OIL PUMP FOR ENGINE}Engine Oil Pump {OIL PUMP FOR ENGINE}

본 발명은 엔진 오일펌프에 관한 것으로서, 보다 상세하게는 스크류 로터를 이용하여 맥동없는 오일압으로 엔진 내부에 공급하는 엔진 오일펌프에 관한 것이다.The present invention relates to an engine oil pump, and more particularly, to an engine oil pump for supplying the inside of an engine with a pulsating oil pressure using a screw rotor.

일반적으로 엔진 오일펌프는 엔진의 작동을 원활하게 하기 위하여 엔진의 마찰 운동부에 윤활오일을 공급하는 장치로서, 오일이 저장되는 용기인 오일팬 내의 오일을 엔진의 마찰 운동부에 충분한 압력으로 압송하기 위하여, 종래에는 로터리 펌프, 기어펌프, 베인펌프 등의 고압을 발생시키는 펌프들로 이루어지며, 특히, 최근 들어서는 기어펌프 중 내접식 기어펌프가 주로 사용된다.In general, the engine oil pump is a device for supplying lubricating oil to the frictional motion of the engine to facilitate the operation of the engine, in order to pump the oil in the oil pan, which is a container in which oil is stored at a sufficient pressure to the frictional motion of the engine, Conventionally, it consists of pumps that generate high pressure, such as rotary pumps, gear pumps, vane pumps, and in particular, in recent years, internal gear pumps are mainly used among gear pumps.

이러한 내접식 기어펌프는 크랭크 샤프트에 고정되어 같이 회전하는 내측기어와, 이 내측기어와 편심되어 기어 물림하는 외측기어의 회전에 의해 오일을 공급한다.The internal gear pump supplies oil by rotation of the inner gear fixed to the crank shaft and rotating together with the outer gear eccentric with the inner gear.

이때, 외측기어의 외주연에 아이들 기어가 기어 물림되는데, 이 아이들 기어는 원심력에 의해 오일펌프의 회전을 배가시켜 주는 역할을 한다.At this time, the idle gear is geared to the outer circumference of the outer gear, the idle gear serves to double the rotation of the oil pump by the centrifugal force.

그러나 상기와 같은 종래의 기어펌프는 내측기어와 함께 편심되어 기어 물림된 외측기어에서 오일압을 발생시킬 때, 일정한 맥동압으로 발생시키게 됨으로, 이 맥동압에 의해 엔진의 소음 발생이 가중되고, 부품의 마모 및 손상을 초래하여 내구성에 악영향을 미치는 등, 엔진의 수명을 단축시키는 문제점을 내포하고 있다.However, the conventional gear pump as described above is generated at a constant pulsation pressure when the oil pressure is generated in the eccentric gears with the inner gears, so that the noise of the engine is increased by the pulsation pressure. It causes the wear and damage of the engine and adversely affects the durability, such as shortening the engine life.

따라서 본 발명은 상기와 같은 문제점을 제거하기 위하여 창출된 것으로서, 본 발명의 목적은 스크류 로터를 이용하여 맥동이 없는 일정 오일압으로 엔진 내부에 윤활유를 공급하도록 하여 엔진 소음 발생을 억제하고, 내구성을 향상시킬 수 있도록 하는 엔진 오일펌프를 제공하는 것이다.Therefore, the present invention was created to eliminate the above problems, an object of the present invention is to supply the lubricating oil to the inside of the engine at a constant oil pressure without pulsation using a screw rotor to suppress the generation of engine noise, durability It is to provide an engine oil pump that can be improved.

도 1은 본 발명에 따른 엔진 오일펌프의 구성을 나타낸 평단면도이다.1 is a plan sectional view showing a configuration of an engine oil pump according to the present invention.

도 2는 도 1의 A부분을 확대하여 도시한 확대 단면도이다.FIG. 2 is an enlarged cross-sectional view illustrating an enlarged portion A of FIG. 1.

상기의 목적을 달성하기 위하여 본 발명에 따른 엔진 오일펌프는 실린더 블록의 일측에 원통형의 중공부로 이루어져 흡입측에서 오일팬 내부의 스트레이너와 흡입관로를 통하여 연결되고, 배출측에서 오일 쿨러와 배출관로를 통하여 연결되는 오일 피드 홀과; 상기 오일 피드 홀 내에 회전 가능하게 삽입되는 스크루 로터와; 상기 실린더 블록의 외측에서 상기 스크루 로터의 일단에 장착되어 엔진으로부터의 동력을 전달하는 드라이브 기어와; 상기 오일 피드 홀의 배출측의 다른 일측에서 바이패스 관로를 통하여 연결되는 안전밸브와; 상기 스크루 로터의 전,후단에서 상기 오일 피드 홀과의 사이에 마찰면을 형성하여 시일링하는 전,후측 시일링 부재를포함하며,In order to achieve the above object, the engine oil pump according to the present invention comprises a cylindrical hollow portion on one side of a cylinder block and is connected through a strainer and a suction pipe line in an oil pan at the suction side, and an oil cooler and a discharge pipe at the discharge side. An oil feed hole connected through the oil feed hole; A screw rotor rotatably inserted into the oil feed hole; A drive gear mounted to one end of the screw rotor outside the cylinder block to transmit power from an engine; A safety valve connected through the bypass pipe at the other side of the discharge side of the oil feed hole; A front and rear sealing member for sealing by forming a friction surface between the front and rear ends of the screw rotor with the oil feed hole,

상기 스크루 로터는 상기 오일 피드 홀의 배출측의 선단에서 축방향으로 홀을 가공하여 배출관로와 연결되도록 제1배출구를 형성하며, 상기 제1배출구와 연결되도록 원주방향을 따라 다수개의 홀을 가공하여 제2배출구를 형성하여 이루어지는 것을 특징으로 하며,The screw rotor processes a hole in the axial direction at the distal end of the oil feed hole to form a first discharge port to be connected to the discharge pipe, and processing a plurality of holes along the circumferential direction to be connected to the first discharge port Characterized in that formed by two outlets,

상기 전,후측 시일링 부재는 메탈 베어링으로 이루어지는 것을 특징으로 한다.The front and rear sealing members are made of a metal bearing.

이하, 본 발명의 바람직한 구성 및 작용을 첨부한 도면에 의거하여 보다 상세히 설명한다.Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 엔진 오일펌프의 구성을 나타낸 평단면도로서, 본 발명은 실린더 블록(1)의 일측에 원통형의 중공부로 이루어진 오일 피드 홀(3)을 가공하여 형성하고, 상기 오일 피드 홀(3)은 외측 즉, 흡입측에서 오일팬(미도시) 내부의 스트레이너(미도시)와 흡입관로(5)를 통하여 연결된다. 그리고 내측 즉, 배출측에서는 오일 쿨러(미도시)와 배출관로(7)를 통하여 연결된다.Figure 1 is a plan sectional view showing the configuration of the engine oil pump according to the present invention, the present invention is formed by processing the oil feed hole (3) consisting of a cylindrical hollow portion on one side of the cylinder block (1), the oil feed hole 3 is connected to the outside, that is, through the suction pipe line 5 and the strainer (not shown) inside the oil pan (not shown) on the suction side. And inside, that is, the discharge side is connected via an oil cooler (not shown) and the discharge pipe (7).

상기 오일 피드 홀(3) 내에는 스크루 로터(9)가 회전 가능하게 삽입되고, 이 스크루 로터(9)에는, 도 2에서 도시한바와 같이, 상기 오일 피드 홀(3)의 배출관로(7)가 형성되는 쪽의 일단에서 축방향으로 홀을 가공하여 상기 배출관로(7)와 연결되도록 제1배출구(11)가 형성되고, 상기 제1배출구(11)와 연결되도록 원주방향을 따라 다수개의 홀을 가공하여 제2배출구(13)가 형성된다.A screw rotor 9 is rotatably inserted into the oil feed hole 3, and as shown in FIG. 2, a discharge pipe path 7 of the oil feed hole 3 is inserted into the screw rotor 9. The first discharge port 11 is formed to be connected to the discharge pipe line 7 by machining the hole in one end of the side is formed, a plurality of holes along the circumferential direction so as to be connected to the first discharge port 11 Is processed to form a second outlet 13.

또한, 상기 스크루 로터(9)의 타단에는 상기 실린더 블록(1)의 외측에서 엔진으로부터의 동력을 전달받아 상기 스크루 로터(9)를 회전시키는 드라이브 기어(15)가 고정 설치된다.In addition, the other end of the screw rotor (9) is fixed to the drive gear 15 for receiving the power from the engine to rotate the screw rotor (9) from the outside of the cylinder block (1).

즉, 상기에서 드라이브 기어(15)가 엔진의 동력을 전달받는 구조는 일반적인 기어펌프의 구성에서 크랭크샤프트와 일체로 회전하는 동력전달기어와 기어 물림되는 구성을 적용할 수 있으며, 이외에 일반적인 동력 전달 구성이면 가능하다.That is, in the structure in which the drive gear 15 receives power of the engine, the drive gear 15 may be configured to include a power transmission gear that rotates integrally with the crankshaft and a gear bite in a general gear pump configuration. Is possible.

그리고 상기 오일 피드 홀(3)의 배출측 즉, 상기 배출관로(7)가 연결되는 일측으로 바이패스 관로(17)가 형성되며, 상기 바이패스 관로(17)는 안전밸브(19)와 연결된다.In addition, a bypass conduit 17 is formed at a discharge side of the oil feed hole 3, that is, at one side to which the discharge conduit 7 is connected, and the bypass conduit 17 is connected to a safety valve 19. .

또한, 상기 스크루 로터(9)의 전,후단에는 상기 오일 피드 홀(3)과의 사이에 마찰면을 형성하여 시일링 작용을 하는 전,후측 메탈 베어링(21,23)이 장착된다.In addition, the front and rear metal bearings 21 and 23 are formed at the front and rear ends of the screw rotor 9 to form a friction surface between the oil feed holes 3 and to perform a sealing action.

상기한 바와 같은 구성을 갖는 엔진 오일펌프의 작용은 드라이브 기어(15)를 통하여 엔진으로부터의 동력이 전달되면, 상기 스크루 로터(9)는 오일 피드 홀(3) 내에서 회전하여 흡입력을 발생시키게 된다.The action of the engine oil pump having the configuration as described above is that when the power from the engine is transmitted through the drive gear 15, the screw rotor 9 is rotated in the oil feed hole (3) to generate a suction force. .

그러면, 오일팬(미도시) 내에서 스트레이너(미도시)를 거친 오일은 상기 흡입관로(5)를 통하여 공급되어 상기 스크루 로터(9)와 오일 피드 홀(3)을 통과하면서 오일압을 형성하여 배출측으로 압송된다.Then, the oil passed through the strainer (not shown) in the oil pan (not shown) is supplied through the suction pipe passage 5 to form an oil pressure while passing through the screw rotor 9 and the oil feed hole (3) It is pumped to the discharge side.

상기 배출측으로 압송된 오일은 상기 스크루 로터(9)의 선단에 구성된 제2배출구(13)와 제1배출구(11)를 통하여 배출관로(7)로 공급되어 엔진의 각 마찰 운동부에 윤활을 위해 공급되고, 일정압 이상의 오일압이 발생하게 되면, 바이패스 관로(17)를 통하여 안전밸브(19)를 통과한 후, 다시 오일팬(미도시)으로 리턴하게 된다.The oil pressurized to the discharge side is supplied to the discharge pipe line 7 through the second discharge port 13 and the first discharge port 11 formed at the tip of the screw rotor 9 to supply to each frictional movement of the engine for lubrication. When an oil pressure of a predetermined pressure or more is generated, after passing through the safety valve 19 through the bypass pipe 17, the oil pressure is returned to the oil pan (not shown).

따라서, 상기한 바와 같은 엔진 오일펌프에 의하면, 스크루 로터(9)가 회전하는 동안에는 일정한 오일압을 공급하게 됨으로, 오일압에 의한 엔진 소음이 줄어들게 되며, 내구성을 향상시킬 수 있게 되는 것이다.Therefore, according to the engine oil pump as described above, by supplying a constant oil pressure during the rotation of the screw rotor 9, the engine noise due to the oil pressure is reduced, it is possible to improve the durability.

상술한 바와 같이, 본 발명의 엔진 오일펌프에 의하면, 엔진의 동력을 이용하여 회전하는 스크류 로터에 의해 맥동이 없는 일정 오일압으로 엔진 내부에 윤활유를 공급하도록 함으로써, 엔진 소음 발생을 억제하고, 내구성을 향상시킬 수 있는 효과가 있다.As described above, according to the engine oil pump of the present invention, by supplying the lubricating oil to the inside of the engine at a constant oil pressure without pulsation by the screw rotor that rotates by using the power of the engine, suppression of engine noise generation, durability There is an effect to improve.

또한, 별도로 오일펌프를 장착하기 위한 펌프 케이스를 구비하지 않아도 됨으로, 부품수가 줄어들게 되며, 이에 따른 중량을 감소할 수 있는 효과도 있는 것이다.In addition, by not having to separately provide a pump case for mounting the oil pump, the number of parts is reduced, thereby reducing the weight there is also an effect.

Claims (3)

실린더 블록의 일측에 원통형의 중공부로 이루어져 흡입측에서 오일팬 내부의 스트레이너와 흡입관로를 통하여 연결되고, 배출측에서 오일 쿨러와 배출관로를 통하여 연결되는 오일 피드 홀과;An oil feed hole formed of a cylindrical hollow portion on one side of the cylinder block through a strainer and a suction pipe line in the oil pan at the suction side, and connected through an oil cooler and a discharge pipe at the discharge side; 상기 오일 피드 홀 내에 회전 가능하게 삽입되는 스크루 로터와;A screw rotor rotatably inserted into the oil feed hole; 상기 실린더 블록의 외측에서 상기 스크루 로터의 일단에 장착되어 엔진으로부터의 동력을 전달하는 드라이브 기어와;A drive gear mounted to one end of the screw rotor outside the cylinder block to transmit power from an engine; 상기 오일 피드 홀의 배출측의 다른 일측에서 바이패스 관로를 통하여 연결되는 안전밸브와;A safety valve connected through the bypass pipe at the other side of the discharge side of the oil feed hole; 상기 스크루 로터의 전,후단에서 상기 오일 피드 홀과의 사이에 마찰면을 형성하여 시일링하는 전,후측 시일링 부재와;A front and rear sealing member for sealing the front and rear ends of the screw rotor by forming a friction surface between the oil feed holes and the seal rotor; 를 포함하는 엔진 오일펌프.Engine oil pump comprising a. 청구항 1에 있어서, 상기 스크루 로터는The method of claim 1, wherein the screw rotor 상기 오일 피드 홀의 배출측의 선단에서 축방향으로 홀을 가공하여 배출관로와 연결되도록 제1배출구를 형성하며, 상기 제1배출구와 연결되도록 원주방향을 따라 다수개의 홀을 가공하여 제2배출구를 형성하여 이루어지는 것을 특징으로 하는 엔진 오일펌프.The first outlet is formed to be connected to the discharge pipe by processing the hole in the axial direction at the distal end of the oil feed hole, and the second outlet is formed by machining a plurality of holes along the circumferential direction to be connected to the first outlet. An engine oil pump, characterized in that consisting of. 청구항 1에 있어서, 상기 전,후측 시일링 부재는The method of claim 1, wherein the front and rear sealing member is 메탈 베어링으로 이루어지는 것을 특징으로 하는 엔진 오일펌프.An engine oil pump comprising a metal bearing.
KR1020000035298A 2000-06-26 2000-06-26 Oil pump for engine KR20020001132A (en)

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KR1020000035298A KR20020001132A (en) 2000-06-26 2000-06-26 Oil pump for engine

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KR1020000035298A KR20020001132A (en) 2000-06-26 2000-06-26 Oil pump for engine

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970027837A (en) * 1995-11-29 1997-06-24 김태구 Engine oil pump structure of automobile
KR19990012032A (en) * 1997-07-26 1999-02-25 양재신 Oil supply device for vehicle engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970027837A (en) * 1995-11-29 1997-06-24 김태구 Engine oil pump structure of automobile
KR19990012032A (en) * 1997-07-26 1999-02-25 양재신 Oil supply device for vehicle engine

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