KR950033063A - Fuel injection pumps for internal combustion engines - Google Patents

Fuel injection pumps for internal combustion engines Download PDF

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Publication number
KR950033063A
KR950033063A KR1019950004567A KR19950004567A KR950033063A KR 950033063 A KR950033063 A KR 950033063A KR 1019950004567 A KR1019950004567 A KR 1019950004567A KR 19950004567 A KR19950004567 A KR 19950004567A KR 950033063 A KR950033063 A KR 950033063A
Authority
KR
South Korea
Prior art keywords
fuel injection
face
injection pump
closing portion
internal combustion
Prior art date
Application number
KR1019950004567A
Other languages
Korean (ko)
Other versions
KR100365631B1 (en
Inventor
시몬 헬무트
마이어 울리히
크로스라비 모하마드-알리
Original Assignee
랄프 베렌스, 빌프리드 뵈어
로베르트 보쉬 게엠베하
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 랄프 베렌스, 빌프리드 뵈어, 로베르트 보쉬 게엠베하 filed Critical 랄프 베렌스, 빌프리드 뵈어
Publication of KR950033063A publication Critical patent/KR950033063A/en
Application granted granted Critical
Publication of KR100365631B1 publication Critical patent/KR100365631B1/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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/02—Fuel-injection apparatus characterised by being operated electrically specially for low-pressure fuel-injection
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F02M41/128—Varying injection timing by angular adjustment of the face-cam or the rollers support

Landscapes

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

Abstract

본 발명은 연료 분사 펌프의 운전중 제어압을 부하받는 작업실 내에 있어서 부하교환에 의한압력 변동에 의해 야기되는패킹 링에 대한 캐비테이션 손상(도려내기 손상)을 피할 수 있게 하는 것을 목적으로 하며, 폐쇄 카버(21)의 작업실(15)측의 단부면(28)내에 패킹 링(25)에 반경 방향 내측으로인접하는 복수의 막힌구멍(27)이 배치되어 있다.SUMMARY OF THE INVENTION The present invention aims to avoid cavitation damage (cut out damage) to a packing ring caused by pressure fluctuations caused by a load change in a chamber under control of the fuel injection pump during operation. In the end surface 28 of the work chamber 15 side of 21, the some closed hole 27 which adjoins the packing ring 25 radially inward is arrange | positioned.

Description

내연 기관용 연료 분사 펌프Fuel injection pumps for internal combustion engines

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

제1도는 연료 분사 펌프의 일부의 단면도1 is a cross-sectional view of a portion of a fuel injection pump

Claims (4)

내연 기관용의 연료 분사 펌프로서, 적어도 하나의 펌프 피스톤을 작동시키기 위해 설치되어 있는 캠구동 장치(1)을 갖고, 상기 캠 구동 장치가 분사 개시 시기 조정을 위해 실린더(12)내에서 이동 가능한 조정 피스톤(10)을 거쳐서 조정 가능하며, 또 조정 피스톤(10)이 그 단부면(14)를 갖고 실린더(12)내에 있어서 소정의 제어압의 액체가 공급되는작업실(15)를 형성하고, 상기 액체에 의해 조정 피스톤이 복귀 스프링(18)의 힘에 대항하여 조절 가능하며, 또 작업실(15)가 다른 쪽에 있어서 또 상기 폐쇄 부분(21)과 이에 인접하는 실린더 벽의 단부면(23)의 사이에 작업실(15)및 폐쇄 부분(21)을 향하여 열려 있는 상기 단부면(23)내의 링형상의 홈(26)내에 삽입된 패킹 링(25)가 긴장 고정되어 있는 형식의 것에 있어서, 폐쇄 부분(21),작업실(15)측의 단부면(28)내에 패킹 링(25)에 반경 방향 내측에 인접하여 복수의 절결(27)이 배치되어 있는 것을 특징으로 하는 내연기관용 연료 분사 펌프.A fuel injection pump for an internal combustion engine, having a cam drive device 1 provided for operating at least one pump piston, wherein the cam drive device is movable in the cylinder 12 for adjustment of the start time of injection. It is possible to adjust via (10), the adjustment piston 10 has its end face 14 and forms a working chamber (15) in which the liquid of a predetermined control pressure is supplied in the cylinder (12), The adjusting piston is thereby adjustable against the force of the return spring 18, and the work chamber 15 is on the other side and between the closing portion 21 and the end face 23 of the cylinder wall adjacent thereto. (15) and in the form in which the packing ring 25 inserted into the ring-shaped groove 26 in the end face 23 opened toward the closing portion 21 is tension-fixed, the closing portion 21 Packing in the end face 28 on the workroom 15 side A fuel injection pump for an internal combustion engine, characterized in that a plurality of cutouts (27) are arranged adjacent to the ring (25) radially inward. 제1항에 있어서, 절결(27)이 등간격으로 분배되어 패킹 링(25)의 내주에 따라서 배치되어 있는 것을 특징으로 하는 연료 분사 펌프.The fuel injection pump according to claim 1, wherein the notches (27) are distributed at equal intervals and arranged along the inner circumference of the packing ring (25). 제2항에 있어서, 절결이 폐쇄 부분(21)의 단부면에 수직으로 연장되어 있는 막힌 구멍(27)로서 구성되어 있는 것을 특징으로 하는 연료 분사 펌프.3. The fuel injection pump according to claim 2, wherein the cutout is configured as a blind hole (27) extending perpendicular to the end face of the closing portion (21). 제1항 내지 제3항 중 어느 한 항에 있어서, 절결의 수가 유리하게는 4인 것을 특징으로 하는 연료 분사펌프.The fuel injection pump according to any one of claims 1 to 3, wherein the number of cutouts is advantageously 4. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950004567A 1994-03-08 1995-03-07 Fuel injection pump for internal combustion engine KR100365631B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4407617A DE4407617B4 (en) 1994-03-08 1994-03-08 Fuel injection pump for internal combustion engines
DEP4407617.7 1994-03-08

Publications (2)

Publication Number Publication Date
KR950033063A true KR950033063A (en) 1995-12-22
KR100365631B1 KR100365631B1 (en) 2003-02-25

Family

ID=6512116

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950004567A KR100365631B1 (en) 1994-03-08 1995-03-07 Fuel injection pump for internal combustion engine

Country Status (6)

Country Link
JP (1) JPH07259583A (en)
KR (1) KR100365631B1 (en)
CN (1) CN1068654C (en)
DE (1) DE4407617B4 (en)
FR (1) FR2717226B1 (en)
GB (1) GB2287511B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861833A (en) * 1973-02-28 1975-01-21 Stanadyne Inc Fuel injection pump
DE2909456A1 (en) * 1979-03-10 1980-09-18 Bosch Gmbh Robert FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES
DE2930499A1 (en) * 1979-07-27 1981-02-12 Bosch Gmbh Robert Fuel injection pump for diesel engine - has annular groove round discharge valve seat to reduce cavitation in fuel
JPS5786533A (en) * 1980-11-15 1982-05-29 Diesel Kiki Co Ltd Regulating device of injection timing in distributor type fuel injection pump
DE3512019A1 (en) * 1985-04-02 1986-10-02 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION PUMP
DE3900345A1 (en) * 1989-01-07 1990-07-12 Bosch Gmbh Robert DISTRIBUTION FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES

Also Published As

Publication number Publication date
JPH07259583A (en) 1995-10-09
KR100365631B1 (en) 2003-02-25
DE4407617A1 (en) 1995-09-14
DE4407617B4 (en) 2010-08-12
CN1120630A (en) 1996-04-17
GB9503912D0 (en) 1995-04-19
GB2287511A (en) 1995-09-20
FR2717226B1 (en) 1997-01-10
GB2287511B (en) 1997-12-24
FR2717226A1 (en) 1995-09-15
CN1068654C (en) 2001-07-18

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