KR930013466A - Fuel injection pump - Google Patents

Fuel injection pump Download PDF

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Publication number
KR930013466A
KR930013466A KR1019910022295A KR910022295A KR930013466A KR 930013466 A KR930013466 A KR 930013466A KR 1019910022295 A KR1019910022295 A KR 1019910022295A KR 910022295 A KR910022295 A KR 910022295A KR 930013466 A KR930013466 A KR 930013466A
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KR
South Korea
Prior art keywords
fuel
plunger
circumferential surface
opening
cylinder hole
Prior art date
Application number
KR1019910022295A
Other languages
Korean (ko)
Other versions
KR940008281B1 (en
Inventor
히사시 나까무라
아끼나와 미네기시
사도루 이도오
야스히로 후지사와
Original Assignee
이다가끼 유끼오
가부시기 가이샤 젝셀
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 이다가끼 유끼오, 가부시기 가이샤 젝셀 filed Critical 이다가끼 유끼오
Publication of KR930013466A publication Critical patent/KR930013466A/en
Application granted granted Critical
Publication of KR940008281B1 publication Critical patent/KR940008281B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

내용 없음No content

Description

연료 분사펌프Fuel injection pump

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 청구범위 제1항에 기재한 본 발명의 한 실시예의 주요부분을 나타낸 단면도.1 is a cross-sectional view showing the main part of one embodiment of the invention described in claim 1;

제2도는 청구범위 제1항에 기재한 본 발명의 다른 실시예의 주요부분을 나타낸 단면도.2 is a cross-sectional view showing the essential parts of another embodiment of the present invention as set forth in claim 1;

제3도는 청구범위 제2항에 기재한 본 발명의 한 실시예의 주요부분을 나타낸 단면도.3 is a cross-sectional view showing the main part of one embodiment of the present invention as set forth in claim 2;

제4도는 제1도에 나타낸 실시예에서 사용되는 캠디스크의 리프트특성을 나타낸 도면.4 shows lift characteristics of a cam disk used in the embodiment shown in FIG.

제5도는 제1도에 나타낸 실시예 있어서의 전자 개폐밸브의 분사개시 때와 분사 폐쇄때의 각각의 분사률을 나타낸 도면FIG. 5 is a diagram showing the respective injection rates at the start of injection and closing of the solenoid valve in the embodiment shown in FIG.

제6도는 스테이지캠의 리프트 특성을 나타낸 도면.6 is a view showing the lift characteristics of the stage cam.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

2 : 펌프실(연료의 저압측) 3a : 실린더구멍2: Pump room (low pressure side of fuel) 3a: Cylinder hole

3e : 오리피스(격막부) 5 : 플런저3e: orifice (diaphragm part) 5: plunger

5f : 누출구 6 : 연료가압실5f: leak port 6: fuel pressure chamber

10 : 전자개폐벨브(개폐밸브) 11 : 누출통로10: solenoid valve (opening and closing valve) 11: leak passage

20 : 전자개폐밸브(개폐벨브) 20h :오리피스(격막부)20: solenoid valve (opening and closing valve) 20h: orifice (diaphragm part)

21 : 누출통로 30 : 전자개폐밸브(개폐밸브)21: Leakage passage 30: Electronic open / close valve

31 : 연통로 32 : 연료도입실.31: Communication path 32: Fuel introduction room.

Claims (2)

실린더구멍에 플런저가 왕복운동이 자유롭도록 설치되었고, 이 플런저의 전지시에 실린더구멍에 연설된 연료가압실의 연료를 가압하고, 플런저의 후진시에 연료의 저압측으로 부터 연료가압실의 연료를 도입하도록 한 연료분사펌프에 있어서 플런저에 일단이 플런저의 외주면에 개구하였고 타단이 연료가압실에 연통한 누출구를 형성하였고, 실린더구멍의 내주면과 저압측과의 사이에 오리피스를 구비하였고, 또한 일단이 실린더의 내주면에 개구함과 동시에 타단이 저압측에 접속된 누출통로를 형성하였고 이 누출통로에 개페밸브를 설치하여 누출구의 플런저의 외주면에 있어서의 개구부와 누출통로의 실린더구명의 내주면에 있어서의 개구부동을 그것들이 플런저의 전진도중에서 연통하도록 배치한 것을 특징으로 하는 연료분사펌프.The plunger is installed in the cylinder hole so as to reciprocate freely, and pressurizes the fuel in the fuel pressure chamber delivered to the cylinder hole during the battery of the plunger, and introduces the fuel in the fuel pressure chamber from the low pressure side of the fuel when the plunger is retracted. In the fuel injection pump, one end of the plunger was opened to the outer circumferential surface of the plunger, the other end formed a leak port communicating with the fuel pressure chamber, and the orifice was provided between the inner circumferential surface of the cylinder hole and the low pressure side. An opening in the outer peripheral surface of the plunger and an opening in the inner circumferential surface of the cylinder passageway of the leak passage were formed by opening an opening on the inner circumferential surface of the cylinder and at the same time the other end connected to the low pressure side. A fuel injection pump, wherein copper is arranged so that they communicate with each other during the advancement of the plunger. 실린더구멍에 플런저가 왕복운동이 자유롭도록 설치되었고, 이 플런저의 전진시에 실린더구멍으로 연설된 연료가압실의 연료를 가압하고 플런저의 후진시에 연료의 저압측으로 부터 연료가압실에 연료를 도입하도록 한 연료분사펌프에 있어서 내부에 연료가 충만한 밀폐된 연료도입실을 설치하였고 플런저에 일단이 플런저의 외주면에 개구하였으며 타단이 연료가압실로 연통한 누출구를 형성하여 실린더구멍의 내주면과 연료도입실과의 사이에 일단이 실린더구멍의 내주면에 개구하였고 타단이 연료도입실에 접속된 연통로를 설치한 다음 이 연통로에 개폐밸브를 설치하고 누출구의 플런저의 외주면에 있어서의 개구부와 연통로의 실린더구멍의 내주면에 있어서의 개구부등을 그것들이 플런저의 전진도중에서 연통하도록 배치한 것을 특징으로 하는 연료분사펌프.The plunger is installed in the cylinder hole so as to reciprocate freely, and pressurizes the fuel in the fuel pressure chamber delivered to the cylinder hole when the plunger moves forward and introduces the fuel into the fuel pressure chamber from the low pressure side of the fuel when the plunger moves backward. In one fuel injection pump, a closed fuel introduction chamber filled with fuel is installed inside, and one end of the plunger is opened on the outer circumferential surface of the plunger, and the other end forms a leak hole communicating with the fuel pressure chamber. Between that, one end is opened to the inner circumferential surface of the cylinder hole, and the other end is provided with a communication path connected to the fuel introduction chamber. Then, an opening / closing valve is installed in this communication path, and the opening on the outer circumferential surface of the plunger of the leak port and the cylinder hole of the communication path are installed. The opening part etc. in the inner peripheral surface are arrange | positioned so that they may communicate in advance of a plunger, It is characterized by the above-mentioned. Fuel injection pump. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910022295A 1991-01-28 1991-12-06 Fuel injection pump KR940008281B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP91-25034 1991-01-28
JP3025034A JPH04252858A (en) 1991-01-28 1991-01-28 Fuel injection pump

Publications (2)

Publication Number Publication Date
KR930013466A true KR930013466A (en) 1993-07-21
KR940008281B1 KR940008281B1 (en) 1994-09-09

Family

ID=12154628

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910022295A KR940008281B1 (en) 1991-01-28 1991-12-06 Fuel injection pump

Country Status (2)

Country Link
JP (1) JPH04252858A (en)
KR (1) KR940008281B1 (en)

Also Published As

Publication number Publication date
JPH04252858A (en) 1992-09-08
KR940008281B1 (en) 1994-09-09

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