KR20110062053A - Pulse pressure decreasing typed variable oil pump - Google Patents

Pulse pressure decreasing typed variable oil pump Download PDF

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KR20110062053A
KR20110062053A KR1020090118632A KR20090118632A KR20110062053A KR 20110062053 A KR20110062053 A KR 20110062053A KR 1020090118632 A KR1020090118632 A KR 1020090118632A KR 20090118632 A KR20090118632 A KR 20090118632A KR 20110062053 A KR20110062053 A KR 20110062053A
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South Korea
Prior art keywords
chamber
pressure
oil pump
housing
variable oil
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KR1020090118632A
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Korean (ko)
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KR101491183B1 (en
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신동흔
장홍운
임재필
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현대자동차주식회사
기아자동차주식회사
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Priority to KR20090118632A priority Critical patent/KR101491183B1/en
Priority to US12/842,401 priority patent/US20110129376A1/en
Publication of KR20110062053A publication Critical patent/KR20110062053A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/20—Rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049—Equalization of pressure pulses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/14—Lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings

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

Abstract

PURPOSE: A pulse pressure reducing type variable oil pump is provided to reduce pulse pressure by reducing a pressure difference between the narrow part and the oil outlet of a pump. CONSTITUTION: A pulse pressure reducing type variable oil pump comprises a housing(5) and a narrow part. The housing comprises a pressure chamber(10). The pressure chamber lowers pressure at a point where the oil is discharged. The pressure chamber is formed to be opposite to a spring chamber which accepts variable springs(4). The narrow part increases the pressure of oil flowing between outer rings.

Description

맥동압 저감타입 가변오일펌프{Pulse pressure decreasing typed Variable Oil Pump} Pulse pressure decreasing typed variable oil pump

본 발명은 가변오일펌프에 관한 것으로, 특히 맥동압 저감타입 가변오일펌프에 관한 것이다.The present invention relates to a variable oil pump, and more particularly to a pulsating pressure reducing type variable oil pump.

일반적으로 가변오일펌프(Variable Oil Pump)는 엔진회전수(RPM)에 따라 오일량을 연속적으로 변화시켜, 고정형 오일펌프의 한계를 극복할 수 있다.In general, a variable oil pump (Variable Oil Pump) is able to overcome the limitations of the fixed oil pump by continuously changing the amount of oil according to the engine speed (RPM).

상기 가변오일펌프(Variable Oil Pump)는 로터 회전으로 체적변화에 따른 압력변화로 오일을 흡입해 실린더블록의 메인갤러리로 공급하면서 동시에, 엔진회전수(RPM)변화에 따른 압력변화에 연동되어 오일 토출유량을 가변시키는 방식을 이용한다.The variable oil pump (Variable Oil Pump) is to suck the oil in the pressure change according to the volume change by the rotation of the rotor to supply to the main gallery of the cylinder block, and at the same time, discharge the oil linked to the pressure change according to the engine speed (RPM) change A method of varying the flow rate is used.

일례로, 압력조절 스프링을 구비함으로써, 토출압력이 스프링 압력보다 커지면 편심된 아우터링(Outer Ring)이 회전하면서 토출유량 감소를 위해 펌핑체적을 감소시킬 수 있다.For example, by providing a pressure regulating spring, when the discharge pressure is greater than the spring pressure, the eccentric outer ring rotates to reduce the pumping volume for reducing the discharge flow rate.

즉, 단위 회전당 펌핑체적을 가변해 고회전영역 동력손실을 최소화하는 작용을 구현한다. That is, the pumping volume per unit rotation is varied to minimize the power loss in the high rotational zone.

하지만, 압력조절 스프링은 토출 압력에 비례하여 압축되면서 아우터링을 회전시키는 복잡한 구조로 인해 펌프 각부의 맥동압력을 과도하게 올려줌으로써, 로터식에 비해 약한 내구력을 갖을 수밖에 없고 심할 경우 베인 및 아우터링쪽 파손을 발생시키게 된다. However, due to the complicated structure that rotates the outer ring while compressing it in proportion to the discharge pressure, the pressure regulation spring excessively raises the pulsating pressure of each part of the pump, which inevitably has weak durability compared to the rotor type. Will be generated.

상기와 같은 과도한 맥동압력은 병목현상으로 급격한 오일압상승을 가져오는 내부의 협소구간을 가짐에 따라, 상기 협소구간쪽과 토출구쪽 압력차를 크게 가져 맥동압도 상승됨에 기인한다.Such excessive pulsating pressure is due to the fact that the pulsating pressure is also increased due to a large pressure difference between the narrow section and the discharge port, as the bottle has a narrow section inside, which causes a sudden oil pressure increase.

이에 본 발명은 상기와 같은 점을 감안하여 발명된 것으로, 펌프내부의 협소구간과 오일토출구사이에 압력저감구간을 형성해줌으로써, 협소구간쪽 병목현상으로 높아진 압력을 낮춰 토출구쪽 압력과 차이를 줄여 내구력 약화를 방지하고 베인 및 아우터링쪽 파손현상을 방지할 수 있는 맥동압 저감타입 가변오일펌프를 제공함에 목적이 있다.Accordingly, the present invention has been made in view of the above, by forming a pressure reducing section between the narrow section and the oil discharge port inside the pump, thereby reducing the pressure and the discharge port pressure difference by lowering the increased pressure due to the bottleneck on the narrow section. An object of the present invention is to provide a pulsating pressure reducing type variable oil pump that can prevent weakening and prevent damage to vanes and outer rings.

또한, 본 발명은 펌프하우징내 챔버공간을 형성해 맥동압을 낮춤으로써, 설계변경을 최소화할 수 있는 맥동압 저감타입 가변오일펌프를 제공함에 목적이 있다.In addition, an object of the present invention is to provide a pulsating pressure reducing type variable oil pump that can minimize the design change by forming a chamber space in the pump housing to lower the pulsating pressure.

상기와 같은 목적을 달성하기 위한 본 발명은, 하우징과, 회전축을 통해 회전하는 베인을 감싼 아우터링사이로 유입된 오일압력을 상승시키는 협소구간을 갖는 가변오일펌프에 있어서, In the present invention for achieving the above object, in the variable oil pump having a narrow section for increasing the oil pressure introduced between the housing and the outer ring wrapped around the vane rotating through the rotary shaft,

상기 하우징에는 유입된 오일이 토출구쪽으로 빠져나가는 경로쪽에 압력을 낮추는 압력챔버를 더 포함한 것을 특징으로 한다.The housing further comprises a pressure chamber for lowering the pressure on the path side through which the introduced oil exits toward the discharge port.

상기 압력챔버는 가변스프링을 수용한 스프링챔버의 반대쪽으로 형성한 것을 특징으로 한다.The pressure chamber is characterized in that formed on the opposite side of the spring chamber containing the variable spring.

상기 압력챔버는 상기 하우징의 축홀을 중심으로 180도 이내로 하우징내면에 파여진 초승달형상 메인챔버이다. The pressure chamber is a crescent-shaped main chamber that is dug into the inner surface of the housing within 180 degrees about the shaft hole of the housing.

상기 메인챔버는 하우징의 축홀을 중심으로 전단쪽 폭에 비해 끝단쪽 폭을 더 넓게 형성하며, 상기 폭이 넓은 끝단쪽을 상기 하우징과 아우터링사이로 오일을 유입시키는 협소구간쪽으로 위치시킨다.The main chamber has an end width wider than a shear width about a shaft hole of the housing, and the wide end is positioned toward a narrow section for introducing oil between the housing and the outer ring.

상기 압력챔버는 상기 메인챔버에서 분기된 분기챔버를 더 형성한다. The pressure chamber further forms a branch chamber branched from the main chamber.

상기 분기챔버는 직선으로 분기되며, 메인챔버의 전단쪽 폭과 끝단쪽 폭사이 값으로 폭을 형성하고, 상기 메인챔버의 폭이 넓은 끝단쪽으로 더 근접된 위치로 형성한다.The branching chamber branches in a straight line, and forms a width at a value between the front end width and the end width of the main chamber, and is formed at a position closer to the wide end of the main chamber.

이러한 본 발명에 의하면, 설계변경을 최소화한 펌프하우징내 챔버공간으로 펌프내부의 협소구간과 오일토출구간 압력차를 줄여 맥동압을 낮추므로, 펌프 내구력 약화방지와 베인 및 아우터링쪽 파손현상도 방지할 수 있는 효과를 갖는다.According to the present invention, by reducing the pressure difference between the narrow section and the oil discharge section of the pump to the chamber space in the pump housing to minimize the design change, it is possible to prevent the weakening of the pump durability and damage of vanes and outer rings Has the effect.

상기와 같은 펌프하우징내 챔버공간을 이용한 맥동압저감은 고속가변조건에서 약 15bar이상이던 베인포켓쪽 피크압(Peak Pressure)을 15bar이하로 낮추는 효과를 갖는다.The pulsation pressure reduction using the chamber space in the pump housing as described above has the effect of lowering the peak pressure (Peak Pressure) to less than 15 bar, which is about 15 bar or more under high-speed variable conditions.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명하며, 이러한 실시예는 일례로서 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 여러 가지 상이한 형태로 구현될 수 있으므로, 여기에서 설명하는 실시예에 한정되지 않는다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the exemplary embodiments of the present invention may be embodied in various different forms, one of ordinary skill in the art to which the present invention pertains may be described herein. It is not limited to the Example to make.

도 1은 본 발명에 따른 맥동압 저감타입 가변오일펌프의 구성도를 도시한 것인바, 본 발명의 가변오일펌프는 동력을 전달하는 회전축(1)을 통해 구동되는 베인(2)과, 상기 베인(2)을 감싼 아우터링(3)과, 상기 아우터링(3)의 회전으로 펌핑체적을 감소시키도록 일정한 토출압력이상에서 압축되는 가변스프링(4)과, 일측으 로 상기 가변스프링(4)을 위치시키는 스프링챔버(5a)를 형성하고, 전체적인 외관형상을 이루는 하우징(5)으로 이루어진다.Figure 1 shows the configuration of the pulsating pressure reducing type variable oil pump according to the present invention, the variable oil pump of the present invention is a vane (2) driven through a rotating shaft (1) for transmitting power, and the vane (2) the outer ring (3), the variable spring (4) is compressed above a certain discharge pressure to reduce the pumping volume by the rotation of the outer ring (3), and the variable spring (4) on one side It forms a spring chamber (5a) for positioning, and consists of a housing (5) forming an overall appearance.

상기와 같은 오일펌프 구조는 가변오일펌프에 적용되는 일반적인 구조이다.The oil pump structure as described above is a general structure applied to the variable oil pump.

본 실시예에서 상기 하우징(5)은 스프링챔버(5a)의 반대쪽으로 압력챔버(10)를 더 형성함으로써, 오일이 들어오는 하우징(5)과 아우터링(3)사이의 협소구간에서 상승된 압력을 낮추어 토출구쪽으로 배출되는 압력과 차이를 줄여준다.In the present embodiment, the housing 5 further forms a pressure chamber 10 on the opposite side of the spring chamber 5a, thereby increasing the pressure in the narrow section between the housing 5 and the outer ring 3 through which oil enters. Lower to reduce the pressure and the difference to the discharge port.

이를 위해, 상기 압력챔버(10)는 하우징(5)의 축홀을 중심으로 180도 이내로 하우징내면에 홈으로 파여진 메인챔버(10a)와, 상기 메인챔버(10a)에서 분기된 분기챔버(10b)로 이루어진다.To this end, the pressure chamber 10 has a main chamber 10a grooved in the inner surface of the housing within 180 degrees around the shaft hole of the housing 5, and a branch chamber 10b branched from the main chamber 10a. Is made of.

상기 메인챔버(10a)는 하우징(5)의 축홀을 중심으로 소정반경(R)을 갖고 원호형상을 이루며, 전단쪽 폭(a)과 끝단쪽 폭(b)이 서로다른 크기를 갖는다. The main chamber 10a has an arc shape with a predetermined radius R around the shaft hole of the housing 5, and has a front end width a and a width end b different from each other.

상기 끝단쪽 폭(b)은 전단쪽 폭(a)에 비해 더 넓은 폭을 갖도록 바깥쪽 반경(R)과 안쪽 반경(r)의 중심을 달리해 초승달형상으로 하며, 폭(b)이 넓은 끝단쪽을 하우징(5)과 아우터링(3)사이로 오일을 유입시키는 협소구간쪽으로 위치시킨다.The end width b is different from the center of the outer radius R and the inner radius r so as to have a wider width than the front width a, and the end width b is a crescent shape. The side is positioned between the housing 5 and the outer ring 3 toward the narrow section for introducing the oil.

상기 분기챔버(10b)는 메인챔버(10a)에서 소정폭을 갖고 직선으로 분기되며, 그 폭은 메인챔버(10a)의 전단쪽 폭(a)과 끝단쪽 폭(b)사이값을 갖는다.The branch chamber 10b has a predetermined width in the main chamber 10a and branches in a straight line, and the width thereof has a value between the front end width a and the end width b of the main chamber 10a.

상기 분기챔버(10b)는 메인챔버(10a)의 폭(b)이 넓은 끝단쪽으로 근접된 위치로 형성한다.The branch chamber 10b is formed at a position where the width b of the main chamber 10a is close to the wide end.

도 2는 본 발명에 따른 맥동압 저감타입 가변오일펌프의 작동도를 나타낸다.Figure 2 shows the operation of the pulsating pressure reducing type variable oil pump according to the present invention.

도시된 바와 같이, 오일펌핑시 유입되는 오일은 하우징(5)과 아우터링(3)사이의 협소구간에서 급격히 상승된 압력Pa을 형성하고, 베인(2)의 회전으로 토출구쪽으로 배출된다.As shown, the oil flowing in during oil pumping forms a rapidly elevated pressure Pa in the narrow section between the housing 5 and the outer ring 3 and is discharged toward the discharge port by the rotation of the vane 2.

본 실시예에서는 상기와 같이 상승된 압력Pa을 갖는 오일이 토출구쪽으로 배출되는 압력Pc과 작은 차이를 갖고 토출된다.In this embodiment, the oil having the elevated pressure Pa as described above is discharged with a small difference from the pressure Pc discharged toward the discharge port.

상기와 같이 유입시 압력Pa와 토출시 압력Pc의 차를 줄이는 작용은 하우징(5)내 오일경로에 형성된 압력챔버(10)를 통해 구현된다.As described above, the action of reducing the difference between the pressure Pa at the time of introduction and the pressure Pc at the time of discharge is implemented through the pressure chamber 10 formed in the oil path in the housing 5.

상승된 압력Pa을 갖고 압력챔버(10)쪽으로 유입된 오일은 압력챔버(10)쪽으로 흘러들고, 유입된 오일은 전단쪽 폭(a)에 비해 더 넓은 끝단쪽 폭(b)을 갖고 초승달형상으로 파여진 메인챔버(10a)와, 상기 메인챔버(10a)에서 분기된 분기챔버(10b)를 통해 퍼져나가면서 토출구쪽으로 배출된다.The oil flowing into the pressure chamber 10 with the elevated pressure Pa flows into the pressure chamber 10, and the oil flowing into the crescent shape has a wider end width b than the shear width a. It is discharged toward the discharge port while spreading through the excavated main chamber 10a and the branch chamber 10b branched from the main chamber 10a.

상기와 같이 압력챔버(10)를 이루는 메인챔버(10a)와 분기챔버(10b)는 하우징(5)내 오일흐름통로면적을 증대함으로써, 좁은 통로를 지난후 넓게 확산될때와 같이 오일은 높은 압력Pa에서 더 낮은 압력Pb로 전환된다.As described above, the main chamber 10a and the branch chamber 10b constituting the pressure chamber 10 increase the oil flow passage area in the housing 5, so that the oil has a high pressure Pa as in the case of wide spread after passing through the narrow passage. At lower pressure Pb.

오일이 들어오는 하우징(5)과 아우터링(3)사이에 폭이 좁은 협소구간이 형성되어 높은 압력Pa으로 상승되었더라도, 내부압력Pb이 오일펌핑시 형성된 높은 압력Pa와 토출구쪽 배출 압력Pc과 차이를 줄여주고, 이러한 압력낮춤(Pa->Pb)이 하우징(5)내에서 지속적으로 일어나 맥동압을 낮추므로, 펌프 내구력 약화방지와 베인 및 아우터링쪽 파손현상도 방지할 수 있다.Although a narrow narrow section is formed between the housing (5) and the outer ring (3) where oil enters, the internal pressure Pb is different from the high pressure Pa formed at the oil pumping and the discharge pressure Pc at the discharge port. In addition, since the pressure lowering (Pa-> Pb) continuously occurs in the housing 5 to lower the pulsation pressure, it is possible to prevent weakening of pump durability and damage to vanes and outer rings.

본 실시예가 적용된 가변베인펌프는 실험을 통해 고속가변조건에서 약 15bar 이상이던 베인포켓쪽 피크압(Peak Pressure)을 15bar이하로 낮추는 작용을 구현한다.The variable vane pump to which the present embodiment is applied implements the effect of lowering the peak pressure of the vane pocket side which is about 15 bar or more under high speed variable conditions to 15 bar or less through experiments.

도 1은 본 발명에 따른 맥동압 저감타입 가변오일펌프의 구성도1 is a configuration diagram of a pulsating pressure reducing type variable oil pump according to the present invention

도 2는 본 발명에 따른 맥동압 저감타입 가변오일펌프의 작동도2 is an operation of the pulsating pressure reducing type variable oil pump according to the present invention

<도면의 주요부분에 대한 부호의 설명>    <Description of the symbols for the main parts of the drawings>

1 : 회전축 2 : 베인1: shaft 2: vane

3 : 아우터링 4 : 가변스프링3: outer ring 4: variable spring

5 : 하우징 5a : 스프링챔버5: housing 5a: spring chamber

10 : 압력챔버 10a : 메인챔버10: pressure chamber 10a: main chamber

10b : 분기챔버10b: branch chamber

Claims (8)

하우징과, 회전축을 통해 회전하는 베인을 감싼 아우터링사이로 유입된 오일압력을 상승시키는 협소구간을 갖는 가변오일펌프에 있어서, In the variable oil pump having a narrow section for increasing the oil pressure introduced between the housing and the outer ring wrapped around the vane rotating through the rotary shaft, 상기 하우징에는 유입된 오일이 토출구쪽으로 빠져나가는 경로쪽에 압력을 낮추는 압력챔버를 더 포함한 것을 특징으로 하는 맥동압 저감타입 가변오일펌프.The housing is a pulsating pressure reducing type variable oil pump, characterized in that it further comprises a pressure chamber for lowering the pressure on the path side in which the oil introduced into the discharge port. 청구항 1에 있어서, 상기 압력챔버는 가변스프링을 수용한 스프링챔버의 반대쪽으로 형성한 것을 특징으로 하는 맥동압 저감타입 가변오일펌프.The pulsating pressure reducing type variable oil pump according to claim 1, wherein the pressure chamber is formed on the opposite side of the spring chamber containing the variable spring. 청구항 2에 있어서, 상기 압력챔버는 상기 하우징의 축홀을 중심으로 180도 이내로 하우징내면에 파여진 초승달형상 메인챔버인 것을 특징으로 하는 맥동압 저감타입 가변오일펌프.The pulsating pressure reducing type variable oil pump according to claim 2, wherein the pressure chamber is a crescent-shaped main chamber that is dug into the inner surface of the housing within 180 degrees about the shaft hole of the housing. 청구항 3에 있어서, 상기 메인챔버는 하우징의 축홀을 중심으로 전단쪽 폭에 비해 끝단쪽 폭을 더 넓게 형성한 것을 특징으로 하는 맥동압 저감타입 가변오일펌프. The pulsating pressure reducing type variable oil pump according to claim 3, wherein the main chamber has a wider end portion width than the front end width width of the main shaft. 청구항 4에 있어서, 상기 폭이 넓은 끝단쪽을 상기 하우징과 아우터링사이로 오일을 유입시키는 협소구간쪽으로 위치시킨 것을 특징으로 하는 맥동압 저감타입 가변오일펌프.The pulsating pressure reducing type variable oil pump according to claim 4, wherein the wide end is positioned toward a narrow section for introducing oil between the housing and the outer ring. 청구항 3에 있어서, 상기 압력챔버는 상기 메인챔버에서 분기된 분기챔버를 더 형성한 것을 특징으로 하는 맥동압 저감타입 가변오일펌프. The pulsating pressure reducing type variable oil pump according to claim 3, wherein the pressure chamber further comprises a branch chamber branched from the main chamber. 청구항 6에 있어서, 상기 분기챔버는 직선으로 분기되며, 메인챔버의 전단쪽 폭과 끝단쪽 폭사이값으로 폭을 형성한 것을 특징으로 하는 맥동압 저감타입 가변오일펌프. The pulsating pressure reducing type variable oil pump according to claim 6, wherein the branching chamber is branched in a straight line, and the width is formed by a value between the front end width and the end width of the main chamber. 청구항 7에 있어서, 상기 분기챔버는 상기 메인챔버의 폭이 넓은 끝단쪽으로 더 근접된 위치로 형성한 것을 특징으로 하는 맥동압 저감타입 가변오일펌프.The pulsating pressure reducing type variable oil pump according to claim 7, wherein the branch chamber is formed at a position closer to the wide end of the main chamber.
KR20090118632A 2009-12-02 2009-12-02 Pulse pressure decreasing typed Variable Oil Pump KR101491183B1 (en)

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