KR101417091B1 - Vacuum pump for vehicle - Google Patents

Vacuum pump for vehicle Download PDF

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Publication number
KR101417091B1
KR101417091B1 KR1020080075940A KR20080075940A KR101417091B1 KR 101417091 B1 KR101417091 B1 KR 101417091B1 KR 1020080075940 A KR1020080075940 A KR 1020080075940A KR 20080075940 A KR20080075940 A KR 20080075940A KR 101417091 B1 KR101417091 B1 KR 101417091B1
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South Korea
Prior art keywords
vacuum pump
route
foreign matter
pump housing
vehicle
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KR1020080075940A
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Korean (ko)
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KR20100015053A (en
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최영호
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현대자동차주식회사
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Priority to KR1020080075940A priority Critical patent/KR101417091B1/en
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    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

본 발명은 차량용 진공펌프에 관한 것으로, 진공펌프의 윤활 오일에 함유되어 진공펌프의 내부로 유입되는 이물질을 배출 루트를 통해 오일 배출구를 거쳐서 진공펌프의 외부로 원활하게 배출할 수 있도록 하여 이물질의 유입 및 고착에 따른 베인과 로터의 변형 및 파손을 효과적으로 방지해서 진공펌프의 원활한 작동과 수명 연장을 도모할 수 있도록, 펌프하우징의 내주면에 유입된 이물질을 상기 펌프하우징에 형성된 오일 배출구 쪽으로 유도하는 배출 루트가 형성되고, 상기 배출 루트는 상기 내주면에 반경방향으로 소정 간격을 두고 원주 방향으로 원호 형상을 이루도록 내측으로 파여진 형태로 형성된 다수개의 유도 루트와, 이 다수개의 유도 루트가 합류되게 원호 형상을 이루고서 상기 오일 배출구와 연결되는 포집 루트로 이루어진 것을 특징으로 한다.The present invention relates to a vacuum pump for a vehicle, and more particularly, it relates to a vacuum pump for a vehicle, which is capable of smoothly discharging foreign matter, which is contained in lubricating oil of a vacuum pump, into the inside of a vacuum pump through an exhaust route, And a discharge route for guiding the foreign matter introduced into the inner circumferential surface of the pump housing toward the oil discharge port formed in the pump housing so as to effectively prevent deformation and breakage of the vane and the rotor due to adhesion, And the discharge route has a plurality of induction routes formed in the inner circumferential surface in a radially inward shape so as to form an arc shape in the circumferential direction at a predetermined interval in the radial direction and an arc shape And a collecting route connected to the oil discharge port It shall be.

유도 루트, 포집 루트, 이물질, 진공펌프 Induction route, collection route, foreign matter, vacuum pump

Description

차량용 진공펌프{Vacuum pump for vehicle}[0001] DESCRIPTION [0002] Vacuum pump for vehicle [

본 발명은 차량용 진공펌프에 관한 것으로, 특히 진공펌프의 내부로 유입된 이물질을 드레인 루프를 통해 진공펌프의 외부로 배출하도록 한 차량용 진공펌프에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum pump for a vehicle, and more particularly to a vacuum pump for a vehicle, which discharges foreign matter introduced into a vacuum pump to the outside of the vacuum pump through a drain loop.

종래 디젤엔진을 탑재한 차량에는 브레이크 페달의 답력을 증대시키는 브레이크 부우스터와, EGR 밸브, 스로틀바디, 가변노즐을 구비한 터보차저 등에 진공압이 사용되고 있고, 상기 진공압은 캠샤프트를 통해 엔진의 회전동력을 구동원으로 사용하는 진공펌프를 통해 만들어져서 각종 필요한 장치에 공급하고 있다.BACKGROUND ART Conventionally, a vehicle equipped with a diesel engine is equipped with a brake booster for increasing the power of a brake pedal, a turbocharger including an EGR valve, a throttle body, and a variable nozzle, and the vacuum pressure is transmitted through a cam shaft It is made through a vacuum pump that uses rotational power as a driving source and supplies it to various necessary devices.

상기와 같은 종래의 진공펌프는 대체로 타원 형상을 이루는 펌프하우징의 내부에 로터가 회전축을 매개로 고속으로 회전가능하게 설치되고, 상기 로터에는 직사각 평판 형상을 한 베인이 끼워져 일체로 회전 및 왕복 운동을 하도록 설치된다.In the conventional vacuum pump as described above, a rotor is rotatably installed at a high speed through a rotary shaft in a generally elliptical pump housing, and a vane having a rectangular plate shape is inserted into the rotor to rotate and reciprocate integrally .

이에 따라 캠샤프트의 회전운동을 상기 회전축이 전달받아 상기 로터를 회전시키고, 상기 로터의 회전에 의해 상기 베인이 회전 및 왕복 운동을 하면서 펌프 하우징의 내부에 진공압을 형성하게 된다.Accordingly, the rotation shaft of the camshaft is received by the rotation shaft to rotate the rotor, and the vane rotates and reciprocates by the rotation of the rotor to form the vacuum pressure inside the pump housing.

상기 로터는 캠샤프트의 회전운동을 전달받아 고속으로 회전하기 때문에 적 절한 윤활이 필요하고, 이를 위해 엔진 오일이 상기 로터에 공급되어져 로터를 윤활하게 되어 있다.Since the rotor receives the rotational motion of the camshaft and rotates at a high speed, proper lubrication is required. To this end, engine oil is supplied to the rotor to lubricate the rotor.

그런데 상기와 같이 로터가 엔진 오일에 의해 윤활되는 과정에 엔진 오일에 함유된 주물사나 가공칩 등과 같은 이물질이 펌프 하우징의 내부로 유입되고, 이러한 이물질은 펌프 하우징의 내측면에 고착되어 상기 베인이 운동을 할 때에 베인에 과도한 토크가 걸리게 해서 베인이 변형될 할 뿐만 아니라 베인을 잡아서 회전시키는 로터에도 부하가 과도하게 걸려서 파손될 우려가 있었다.However, in the process of lubricating the rotor with the engine oil as described above, foreign matter such as a casting screw or a machining chip contained in the engine oil flows into the interior of the pump housing, and such foreign matter is fixed to the inner surface of the pump housing, Excessive torque is applied to the vane so that not only the vane is deformed but also the rotor which catches and rotates the vane is excessively caught and damaged.

이에 본 발명은 상기한 사정을 감안하여 안출된 것으로, 진공펌프의 윤활 오일에 함유되어 진공펌프의 내부로 유입되는 이물질을 배출 루트를 통해 오일 배출구를 거쳐서 진공펌프의 외부로 원활하게 배출할 수 있도록 하여 이물질의 유입 및 고착에 따른 베인과 로터의 변형 및 파손을 효과적으로 방지해서 진공펌프의 원활한 작동과 수명 연장을 도모할 수 있도록 한 차량용 진공펌프를 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a vacuum pump which is capable of smoothly discharging foreign matter, which is contained in lubricating oil of a vacuum pump, into a vacuum pump through a discharge route, And it is an object of the present invention to provide a vacuum pump for a vehicle which can effectively prevent deformation and breakage of a vane and a rotor due to the inflow and adherence of a foreign substance, thereby improving the smooth operation and life of the vacuum pump.

상기와 같은 목적을 달성하기 위한 본 발명은, 펌프하우징의 내주면에 유입된 이물질을 상기 펌프하우징에 형성된 오일 배출구 쪽으로 유도하는 배출 루트가 형성되어 있다.According to an aspect of the present invention, there is provided a discharge route for guiding a foreign matter introduced into an inner circumferential surface of a pump housing toward an oil discharge port formed in the pump housing.

바람직하기로는 상기 배출 루트는 상기 내주면에 반경방향으로 소정 간격을 두고 원주 방향으로 원호 형상을 이루도록 내측으로 파여진 형태로 형성된 다수개의 유도 루트와, 이 다수개의 유도 루트가 합류되게 원호 형상을 이루고서 상기 오일 배출구와 연결되는 포집 루트로 이루어진 것을 특징으로 한다.Preferably, the discharge route includes a plurality of induction routes formed in the inner circumferential surface in a radially inward shape so as to form an arc shape in a circumferential direction at predetermined intervals in the radial direction, and a plurality of induction routes formed in an arcuate shape And a collecting route connected to the oil discharge port.

본 발명에 따른 차량용 진공펌프에 의하면, 진공펌프 하우징의 내측면에 원호 형상을 한 다수개의 유도 루트와, 이 유도 루트들이 합류되어 오일 배출구로 연결된 포집 루트가 각각 형성되어, 로터의 윤활 오일에 함유된 이물질이 진공펌프 하우징의 내부로 유입될 경우에 상기 이물질은 베인의 작동에 운동에 따라 상기 유도 루트를 거쳐서 상기 포집 루트에 포집된 다음에 상기 오일 배출구를 매개로 진공펌프 하우징의 외부로 원활하게 배출됨으로써, 진공펌프 하우징의 내부에 이물질이 고착되어 베인의 운동을 방해할 염려가 없고, 이에 따라 베인과 로터의 작동이 원활해질 뿐만 아니라 이물질의 고착으로 인해 베인과 로터에 과도한 토크가 걸려서 변형되거나 파손될 염려가 없으므로 진공펌프의 내구성 및 수명이 연장되며, 브레이크 장치나 터보차저 등이 진공펌프로부터 원활하게 진공압을 공급받아 작동되어 차량의 제동 안정성과 연비 등이 향상되는 등의 효과가 있다. According to the vacuum pump for a vehicle of the present invention, a plurality of circular induction routes formed on the inner surface of the vacuum pump housing and a collection route formed by joining the induction routes and connected to the oil discharge port are formed, The foreign matter is collected in the collection route via the induction route according to the motion of the vane, and then smoothly flows to the outside of the vacuum pump housing through the oil discharge port when the foreign matter flows into the inside of the vacuum pump housing As a result, there is no fear that the foreign material is fixed to the inside of the vacuum pump housing to interfere with the movement of the vane. Accordingly, not only smooth operation of the vane and the rotor but also excessive torque is applied to the vane and rotor The durability and the service life of the vacuum pump are prolonged because there is no risk of breakage, The charger and the like are supplied with the vacuum pressure from the vacuum pump smoothly so that the braking stability and the fuel consumption of the vehicle are improved.

이하 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail with reference to the accompanying drawings.

도 1에는 본 발명에 따른 차량용 진공펌프의 내부 구조를 나타내는 사시도가 도시되어 있는 바, 즉 대체로 타원 형상을 이루는 펌프하우징(1)의 내부에 로터(2)가 회전축(3)을 매개로 고속으로 회전가능하게 설치되고, 상기 로터(2)에는 직사각 평판 형상을 한 베인(4)이 끼워져 일체로 회전 및 왕복 운동을 하도록 설치된다.FIG. 1 is a perspective view showing the internal structure of a vacuum pump for a vehicle according to the present invention. In FIG. 1, a rotor 2 is disposed inside a pump housing 1 having a generally elliptical shape at a high speed And a vane 4 having a rectangular flat plate shape is inserted into the rotor 2 so as to integrally rotate and reciprocate.

상기 펌프하우징(1)의 내주면에는 이물질을 펌프하우징의 외부로 배출하기 위한 배출 루트가 구비되는 데, 즉 다수개의 유도 루트(1a)가 반경방향으로 소정 간격을 두고 원주 방향으로 원호 형상을 이루도록 내측으로 파여진 형태로 형성되고, 상기 다수개의 유도 루트(1a)는 원호 형상을 이루는 하나의 포집 루트(1b)에서 합류되게 형성되며, 상기 포집 루트(1b)도 상기 내주면의 내측으로 파여진 형태로 형성된다.A discharge route for discharging foreign matter to the outside of the pump housing is provided on the inner circumferential surface of the pump housing 1, that is, a plurality of induction routes 1a are formed on the inner side of the pump housing 1 so as to form a circular arc in the circumferential direction at a predetermined interval in the radial direction The plurality of induction routes 1a are formed to be merged at a single collecting route 1b having an arc shape and the collecting route 1b is also formed in the form of being widened to the inside of the inner peripheral surface .

그리고 상기 포집 루트(1b)의 선단부는 상기 펌프하우징(1)을 관통하여 형성된 오일 배출구(1c)와 연통하도록 연결된다.The leading end of the collecting route 1b is connected to communicate with the oil discharge port 1c formed through the pump housing 1.

상기 각 유도 루트(1a)는 서로 다른 직경을 가지도록 원호 형상으로 형성된다.Each of the guide roots 1a is formed in an arc shape so as to have different diameters.

이에 따라 도시되지 않은 캠샤프트의 회전운동을 상기 회전축(3)이 전달받아 로터(2)를 회전시키고, 상기 로터(2)의 회전에 의해 상기 베인(4)이 회전 및 왕복 운동을 하면서 펌프 하우징의 내부에 진공압을 형성하게 된다.As a result, the rotational motion of the camshaft (not shown) is received by the rotational shaft 3 to rotate the rotor 2, and the vane 4 is rotated and reciprocated by the rotation of the rotor 2, Thereby forming a vacuum pressure inside the vacuum chamber.

그리고 상기 로터(2)가 고속 회전 운동을 함에 따라 로터에 엔진 오일이 공급되어 로터를 윤활하게 되는 데, 이 때에 윤활 오일에 함유된 여러 종류의 이물질이 윤활 오일을 따라서 펌프하우징의 내측으로 유입되고, 상기 윤활 오일에 함유된 이물질은 상기 베인의 회전 및 왕복 운동에 의해 펌프 하우징의 내주면에 산재되게 되며, 이렇게 산재된 이물질은 상기 다수개의 유도 루트에 의해 유도 루트의 내부로 유입되게 유도된다.As the rotor 2 rotates at a high speed, engine oil is supplied to the rotor to lubricate the rotor. At this time, various kinds of foreign substances contained in the lubricating oil flow into the inside of the pump housing along with the lubricating oil The foreign matter contained in the lubricating oil is scattered on the inner circumferential surface of the pump housing by the rotation and reciprocation of the vane, and the scattered foreign matter is guided into the guiding route by the plurality of guiding routes.

상기와 같이 각 유도 루트에 유입된 이물질은 베인의 회전 운동 방향으로 유도 루트를 따라서 이동하게 되고, 각 유도 루트를 따라서 이동한 이물질은 다시 상기 포집 루트에서 포집되며, 포집 루트에 포집된 이물질은 포집 루트를 따라서 이동하다가 상기 오일 배출구를 통해 엔진 오일과 함께 펌프 하우징의 외부로 원활하게 배출된다.As described above, the foreign matter introduced into each guiding route moves along the guiding route in the rotational direction of the vane. The foreign matter traveling along each guiding route is again collected at the collecting route, and the foreign matter collected at the collecting route is collected And is smoothly discharged to the outside of the pump housing together with the engine oil through the oil discharge port while moving along the route.

상기와 같이 펌프하우징(1)의 내부로 엔진 오일과 함께 유입된 이물질은 원활하게 포집되어 다시 펌프하우징의 외부로 엔진 오일과 함께 배출됨으로써, 펌프하우징의 내주면에 고착되어 베인이나 로터에 부하를 주게 될 염려가 없게 되는 것이다.As described above, the foreign matter introduced into the pump housing 1 together with the engine oil is smoothly collected and discharged together with the engine oil to the outside of the pump housing, thereby being fixed to the inner peripheral surface of the pump housing, There is no need to worry about it.

도 1은 본 발명에 따른 진공펌프의 내부 구조를 나타내는 사시도이다.1 is a perspective view showing an internal structure of a vacuum pump according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 >Description of the Related Art

1-펌프하우징 2-로터1-pump housing 2-rotor

3-회전축 4-베인3-Rotary shaft 4-vane

1a-유도 루트 1b-포집 루트1a-induction route 1b-collection route

1c-오일 배출구1c-Oil outlet

Claims (3)

펌프하우징의 내주면에 유입된 이물질을 상기 펌프하우징에 형성된 오일 배출구 쪽으로 유도하는 배출 루트가 형성되고,A discharge route is formed for guiding the foreign matter introduced into the inner peripheral surface of the pump housing toward the oil discharge port formed in the pump housing, 상기 배출 루트는 상기 내주면에 반경방향으로 소정 간격을 두고 원주 방향으로 원호 형상을 이루도록 내측으로 파여진 형태로 형성된 다수개의 유도 루트와, 이 다수개의 유도 루트가 합류되게 원호 형상을 이루고서 상기 오일 배출구와 연결되는 포집 루트로 이루어진 것을 특징으로 하는 차량용 진공펌프.Wherein the discharge route has a plurality of induction routes formed in the inner peripheral surface at a predetermined interval in the radial direction so as to be inwardly curved so as to form an arcuate shape in the circumferential direction and an arcuate shape in which the plurality of induction routes join together, And a collecting route connected to the vacuum pump. 삭제delete 청구항 1에 있어서, 상기 유도 루트가 직경이 서로 상이한 3개의 원호 형상으로 형성된 것을 특징으로 하는 차량용 진공펌프.The vacuum pump for a vehicle according to claim 1, wherein the induction routes are formed in three arc shapes having different diameters from each other.
KR1020080075940A 2008-08-04 2008-08-04 Vacuum pump for vehicle KR101417091B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101738929B1 (en) * 2015-10-26 2017-05-24 영신정공 주식회사 Electric vacuum pump

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KR101509898B1 (en) 2013-07-09 2015-04-07 현대자동차주식회사 Vacuum pump of vehicle for reducing operation noise
CN111287976B (en) * 2020-03-04 2021-09-14 浙江壹达真空设备制造有限公司 Vacuum pump and control method

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Publication number Priority date Publication date Assignee Title
JPH02102389A (en) * 1988-10-12 1990-04-13 Nitsukisou Eiko Kk Rotary pump
KR20000015849U (en) * 1999-01-18 2000-08-16 이일영 Pump
KR200238619Y1 (en) 2001-04-03 2001-10-10 오인숙 Vane pump
JP2004076735A (en) 2002-07-29 2004-03-11 Denso Corp Vane pump

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH02102389A (en) * 1988-10-12 1990-04-13 Nitsukisou Eiko Kk Rotary pump
KR20000015849U (en) * 1999-01-18 2000-08-16 이일영 Pump
KR200238619Y1 (en) 2001-04-03 2001-10-10 오인숙 Vane pump
JP2004076735A (en) 2002-07-29 2004-03-11 Denso Corp Vane pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101738929B1 (en) * 2015-10-26 2017-05-24 영신정공 주식회사 Electric vacuum pump

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