KR960018213A - Fuel injection pump - Google Patents

Fuel injection pump Download PDF

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Publication number
KR960018213A
KR960018213A KR1019950041237A KR19950041237A KR960018213A KR 960018213 A KR960018213 A KR 960018213A KR 1019950041237 A KR1019950041237 A KR 1019950041237A KR 19950041237 A KR19950041237 A KR 19950041237A KR 960018213 A KR960018213 A KR 960018213A
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KR
South Korea
Prior art keywords
space
control
fuel injection
pressure
piston
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KR1019950041237A
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Korean (ko)
Inventor
가이거 볼프강
쿨더 토마스
그라이프 후버트
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랄프 베렌스·빌프레드 뵈어
로베르트 보쉬 게엠베하
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Publication of KR960018213A publication Critical patent/KR960018213A/en

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    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/02—Pumps peculiar thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/16—Adjustment of injection timing
    • F02D1/18—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse
    • F02D1/183—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse hydraulic
    • 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
    • F02M41/14—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 rotary distributor supporting pump pistons
    • F02M41/1405—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 rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis
    • F02M41/1411—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 rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis characterised by means for varying fuel delivery or injection timing
    • F02M41/1416—Devices specially adapted for angular adjustment of annular cam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/16—Adjustment of injection timing
    • F02D1/18—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse
    • F02D1/183—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse hydraulic
    • F02D2001/186—Adjustment of injection timing with non-mechanical means for transmitting control impulse; with amplification of control impulse hydraulic using a pressure-actuated piston for adjustment of a stationary cam or roller support

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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)
  • High-Pressure Fuel Injection Pump Control (AREA)

Abstract

본 발명은, 분사 개시를 조절하기 위하여 내부에 배열된 제어 슬라이드(128)의 추종 피스톤으로서 설계되고 일 측면을 따라 작동 공간(120)을 둘러싸며 복귀 스프링의 힘에 대항하여 상기 작동 공간 내의 압력에 의해 부하가 가해지고 연료 분사 펌프의 캠 구동부의 정지부에 연결된 분사 개시 조절 피스톤(116)이 마련된 연료 분사 펌프에 관한 것이다. 제어 슬라이드(128) 및 제어 슬라이드의 설정을 통한 작동 공간(120)으로부터의 입력 반작용을 방지하기 위하여, 제어 슬라이드는 해제 공간(122)에 의해 조절 피스톤(116)으로부터 분리된 삽입체(51) 내에 배치된 별개의 피스톤(55)에 의해 작동된다. 상기 삽입체 내에서, 피스톤은 압력 공간(56)을 둘러싸는데, 상기 압력 공간은 매개 변수에 종속하는 제어 압력에 의해 부하가 가해지고, 한편으로는 해제공간(122)의 비결합 개재로 인해 작동 공간(120)내의 조절 압력에 의한 영향을 더 이상 받지 않는다. 이러한 것은 제어 슬라이드(128)가 보다 결함 없이 설정되게 하며, 따라서 분사 조절 피스톤(116) 및 분사 개시 설정이 보다 정확하게 진동 없이 설정되게 한다.The invention is designed as a following piston of a control slide 128 arranged therein for adjusting the initiation of the injection and surrounds the working space 120 along one side and against the pressure in the working space against the force of the return spring. A fuel injection pump provided with a load and provided with an injection start adjusting piston 116 connected to a stop of a cam drive of the fuel injection pump. In order to prevent input reactions from the operating space 120 through the setting of the control slide 128 and the control slide, the control slide is inserted into the insert 51 separated from the control piston 116 by the release space 122. It is operated by a separate piston 55 arranged. Within the insert, a piston surrounds the pressure space 56, which is loaded by the control pressure, which is dependent on the parameters, and on the one hand, due to the non-engaged interposition of the release space 122. It is no longer affected by the adjustment pressure in the space 120. This allows the control slide 128 to be set more flawlessly, thus allowing the injection control piston 116 and injection start setting to be more accurately set without vibration.

Description

연료 분사 펌프Fuel injection pump

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

제1도는 반경 방향으로 배열된 펌프 피스톤과, 공지 형태로 분사 개시를 조절하는 장치를 갖는 분배기형 연료 분사 펌프의 단면도,1 is a cross-sectional view of a dispenser type fuel injection pump having a pump piston arranged radially and a device for regulating the initiation of injection in a known form,

제2도는 분사 조절 피스톤 및 제어 슬라이드를 가지며, 분사 개시를 조절하는 장치를 구비한 연료 분사 펌프의 예시적인 제1실시예의 부분 단면도,2 is a partial cross-sectional view of a first exemplary embodiment of a fuel injection pump having an injection regulating piston and a control slide, the apparatus including a device for adjusting injection initiation;

제3도는 다른 형태의 제어 스프링을 가지고, 제2도의 연료 분사 펌프에 관하여 변경된 예시적인 일시예의 부분 단면도.3 is a partial cross-sectional view of an exemplary embodiment modified with respect to the fuel injection pump of FIG. 2 with another type of control spring.

Claims (15)

복원력에 대항하여 분사 조절 피스톤을 조절하는 제어 가능 압력 매체에 의해 부하가 가해지는 작동 공간(120)을 실린더(17)내에서 한정하고 분사 개시를 조절하는 분사 조절 피스톤(116,216)과, 분사 조절 피스톤(116,216)의 일 측면 밀폐 실린더 보어(127,227) 내에서 분사 조절 피스톤(116,2196)의 축방향으로 변위 가능하고 제어 스프링(131,231)의 힘에 대항하여 제어 압력에 의해 조절 가능한 제어 슬라이드(128,228)를 포함하며, 상기 제어 슬라이드는, 실린더 보어(127,227)내에서, 실린더 보어(127,227)로의 압력 매체 유입부(39)와, 실린더 보어 외부로의 압력 매체 유출부(47)와, 실린더 보어(127,227)로부터 작동 공간(120)으로의 연결 도관(32,132)을 제어하는 제어 모서리와; 제어 슬라이드의 조절을 일으키고, 제어 압력에 의해 부하가 가해지며, 하우징에 대해 고정된 부분 내에 배열되고 작동 공간(120)으로부터 분리된 압력 공간(56,156,356) 내로 돌출한 표면을 구비하는, 연료 분사 펌프에 있어서, 압력공간(56,156,356)과 분사 조절 피스톤(116,216)의 작동 공간(120) 사이에, 분사 조절 피스톤9116,216)의 단부면(121, 321)에 의해 한정된 해제 공간(122,222,77,79)이 마련되며, 작동 공간(120)은 해제 공간(122,222,77,79)에 대향한 분사 조절 피스톤(116,216)의 측면에 배치된 것을 특징으로 하는 연료 분사 펌프.Injection control pistons 116 and 216 for controlling the initiation of the injection and for controlling the initiation of injection 120 in the cylinder 17 by a controllable pressure medium that regulates the injection control piston against the restoring force; Control slides 128, 228 displaceable in the axial direction of injection control pistons 116, 2196 in one side sealed cylinder bore 127, 227 of 116, 216 and controlled by control pressure against the force of control springs 131, 231. The control slide includes a pressure medium inlet 39 into the cylinder bores 127 and 227, a pressure medium outlet 47 outside the cylinder bore, and a cylinder bore 127 and 227 in the cylinder bores 127 and 227. A control edge for controlling the connection conduits (32, 132) to the working space (120); A fuel injection pump having a surface that projects into the pressure spaces 56, 156, 356 arranged in a portion fixed to the housing and separated from the operating space 120, causing adjustment of the control slide and being loaded by the control pressure. Between the pressure spaces 56, 156, 356 and the working space 120 of the injection control pistons 116, 216, the release spaces 122, 222, 77, 79 defined by the end faces 121, 321 of the injection control pistons 9316, 216. It is provided, the operating space 120 is a fuel injection pump, characterized in that disposed on the side of the injection control piston (116, 216) opposite the release space (122, 222, 77, 79). 제1항에 있어서, 제어 스프링(131.231)은 하우징에 대해 고정된 부분의 스프링 공간(57) 내에 배치된 것을 특징으로 하는 연료 분사 점프.Fuel injection jump according to claim 1, characterized in that the control spring (131.231) is arranged in a spring space (57) in a part fixed to the housing. 제2항에 있어서, 하우징에 대해 고정된 부분은, 압력 공간(56,156,356) 및 스프링 공간(57)을 수용하고, 외부에 대해 해제 공간을 밀폐하여, 연료 분사 펌프의 하우징 내로 삽입되는 삽입체(51,1541)인 것을 특징으로 하는 연료 분사 펌프.3. The insert (51) according to claim 2, wherein the part fixed to the housing accommodates the pressure spaces (56, 156, 356) and the spring space (57), seals the release space against the outside, and is inserted into the housing of the fuel injection pump. Fuel injection pump, characterized in that (1541). 제3항에 있어서, 압력 공간(56,156,356)은 전기 제어 밸브(44)가 배열된 해제 도관(143)과 제어 압력원에 연결된 것을 특징으로 하는 연료 분사 펌프.4. The fuel injection pump according to claim 3, wherein the pressure space (56, 156, 356) is connected to a control pressure source and a release conduit (143) in which an electric control valve (44) is arranged. 제1항 내지 4항 중 어느 한 항에 있어서, 하우징에 대해 고정된 부분(51,151,351) 내에는 밀폐 실린더(53,71,171)가 형성하며, 밀폐 실린더 내에는 실린더(53,71,371)를 압력 공간(56,156,356) 및 스프링 공간(57;157;77;79)으로 분할하고, 실린더 외부에서 밀봉 안내되는 태핏(49,149,349)을 통해 제어 슬라이드(128,228)에 고정 결합되지 않은 피소톤(55,73,373)이 배치된 것을 특징으로 하는 연료 분사 펌프.5. A sealed cylinder (53, 71, 171) is formed in the portions (51, 151, 351) fixed to the housing, and the cylinder (53, 71, 371) is placed in the pressure space (56, 156, 356). ) And spring spaces (57; 157; 77; 79), and unpositioned physotones (55, 73, 373) securely coupled to control slides (128, 228) through tappets (49, 149, 349) sealed guided outside the cylinder. Fuel injection pump. 제5항에 있어서, 압력 공간(56, 156,356)에 대향한 피스톤의 측면에서 피스톤(55,73, 173)에 의해 한정된 공간(57)은 해제 공간(122)에 연결된 것을 특징으로 하는 연료 분사 펌프.Fuel injection pump according to claim 5, characterized in that the space (57) defined by the pistons (55,73, 173) on the side of the piston opposite the pressure spaces (56, 156, 356) is connected to the release space (122). . 제6항에 있어서, 제어 슬라이드(128,228)는 분사 조절 피스톤(116,216) 상에서 지지된 유지 스프링(76)에 의해 피스톤(73,373)에 연결된 것을 특징으로 하는 연료 분사 펌프.A fuel injection pump according to claim 6, characterized in that the control slide (128,228) is connected to the piston (73,373) by a retaining spring (76) supported on the injection control piston (116,216). 제7항에 있어서, 실린더 보어 (127,227) 내에서 해제 공간(122,222,79)에 대향한 재어 슬라이드(128,228)의 단부에는 실린더 보어의 밀폐 측면 상에 지지된 유지 스프링(76)에 의해 부하가 가해지는 것을 특징으로 하는 연료 분사 핌프.8. A load is applied to the ends of the control slides 128 and 228 in the cylinder bores 127 and 227 opposite the release spaces 122, 222 and 79 by means of retaining springs 76 supported on the sealing side of the cylinder bore. A fuel injection pimp characterized by losing. 제7항 또는 제8항에 있어서, 해제 공간(122,222,79)에 대향한 재어 슬라이드(128,228)의 단부는 압력 매체의 의해 부하가 가해지는 공간(46)을 실린더 보어(127,227)의 밀폐 측면에 대해 둘러싸는 것을 특징으로 하는 연료 분사 펌프.9. The end of the jaw slides 128, 228, opposite the release spaces 122, 222, 79, has a space 46, which is loaded by a pressure medium, on the closed sides of the cylinder bores 127, 227. A fuel injection pump, characterized in that for enclosing. 제6항 내지 제9항 중 어느 한 항에 있어서, 압력 공간(56,356)온 해제 공간(122,79)과 대면한 피스톤(373)의 측면에 배치된 것을 특징으로 하는 연료 분사 펌프.10. A fuel injection pump according to any one of claims 6 to 9, characterized in that it is arranged on the side of the piston (373) facing the pressure space (56,356) on release space (122,79). 제6항 내지 제5항 중 어느 한 항에 있어서, 압력 공간(156)온 해제 공간(222)으로부터 멀리 대면한 피스톤(73)의 측면에 배치된 것을 특징으로 하는 연료 분사 펌프.The fuel injection pump according to any one of claims 6 to 5, characterized in that it is arranged on the side of the piston (73) facing away from the pressure space (156) on release space (222). 상기 항 중 어느 한 항에 있어서, 삽입체(51)는 삽입체를 체결하도록 연료 분사 펍프의 하우징 (11)의 외부에서 지지하는 플랜지(63)를 가지며, 상기 삽입체는 실린더(17) 내로 돌출하는 것을 특징으로 하는 연료 분사 펌프.The insert (51) according to claim 1, wherein the insert (51) has a flange (63) supporting from the outside of the housing (11) of the fuel injection pub to engage the insert, the insert projecting into the cylinder (17). A fuel injection pump, characterized in that. 상기 항 중 어느 한 항에 있어서, 삽입체(151,351)는 실린더 (17) 내로 밀봉 삽입되며, 실린더(17)를 외부에 대해 밀폐하는 덮개 (64)와 지지 접촉하는 상태로 조절 피스톤(216)에 부하를 가하는 복원력 (123,79)에 의해 유지되는 것을 특징으로 하는 연료 분사 펌프.An insert (151, 351) is inserted into the cylinder (17) sealingly, and the adjustment piston (216) is in contact with the cover (64) for sealing the cylinder (17) to the outside. A fuel injection pump characterized in that it is maintained by a restoring force (123,79) applying a load. 상기 항 중 어느 한 항에 있어서, 분사 조절 피스톤에 복원력을 가하는 압측 스프링 (123)온 해제 공간(122,222) 내에 배치된 것을 특징으로 하는 연료 분사 펌프.The fuel injection pump according to any one of the preceding claims, characterized in that it is arranged in the pressure spring (123) on release space (122,222) for applying a restoring force to the injection control piston. 제1항에 있어서, 압력 공간(356)온 외부에 대해 해저 공간(79)을 밀폐하고 연료 분사 펌프의 하우징(11)내로 삽입되는 삽입체 (351) 내에 형성되고, 전기 제어 밸브(44)가 배열된 해제 도관(143) 및 제어 압력원에 연결되며, 삽입체 내에는 내부에 피스톤(373)이 배치된 밀폐 실린더 (371)가 형성되며, 상기 피스톤(373)은 해제 공간(79)과 대면한 측면에서는 압력 공간(356)을 둘러싸도 대향 측면에서는 해제 공간(79)에 연결된 공간(77)을 둘러싸며, 상기 피스톤은, 분사 조절 피스톤(316) 상에 지지된 유지 스트링(76)에 의해, 실린더 (373)외부에서 밀봉 안내되는 태핏 (349)을 통하여, 제어 슬라이드(228)에 고정 결합되지 않으며, 상기 태핏 (349)에는, 태핏(349) 상의 정지부(87)와 해제 공간(79)을 한정하는 삽입체 (351)외 단부벽 사이에서 클램핑된 제어 스프링 (331)에 의해, 해제 공간(79) 내에서 부하가 가해지는 것을 특징으로 하는 연료 분사 펌프.2. The electric control valve 44 according to claim 1, wherein the electric control valve 44 is formed in an insert 351 that seals the subsea space 79 outside the pressure space 356 and is inserted into the housing 11 of the fuel injection pump. A closed cylinder 371 is formed in the insert, connected to the arranged release conduit 143 and a control pressure source, the piston 373 facing the release space 79. On one side surrounds the pressure space 356 but on the opposite side surrounds the space 77 connected to the release space 79, the piston being supported by a retaining string 76 supported on the injection control piston 316. Is not fixedly coupled to the control slide 228 via a tappet 349 that is sealed guided outside the cylinder 373, and to the tappet 349, a stop 87 and a release space 79 on the tappet 349. Release control ball by means of a control spring 331 clamped between the end wall outside the insert 351 A fuel injection pump, characterized in that a load is applied in the liver (79). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950041237A 1994-11-15 1995-11-14 Fuel injection pump KR960018213A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4440749.1 1994-11-15
DE4440749A DE4440749A1 (en) 1994-11-15 1994-11-15 Fuel injection pump

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KR960018213A true KR960018213A (en) 1996-06-17

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KR1019950041237A KR960018213A (en) 1994-11-15 1995-11-14 Fuel injection pump

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EP (1) EP0717181A3 (en)
JP (1) JPH08210154A (en)
KR (1) KR960018213A (en)
DE (1) DE4440749A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19629947A1 (en) * 1996-07-25 1998-01-29 Opel Adam Ag Fuel injection pump with a spray adjustment piston which serves to adjust the start of injection
DE19640678A1 (en) * 1996-10-02 1998-04-09 Bosch Gmbh Robert Fuel injection pump with a spray adjustment piston that serves to adjust the start of injection
DE19849925A1 (en) * 1998-10-29 2000-05-04 Bosch Gmbh Robert Fuel injection pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB925979A (en) 1960-08-30 1963-05-15 Cav Ltd Liquid fuel injection pumps
GB8619994D0 (en) * 1986-08-16 1986-09-24 Lucas Ind Plc Fuel injection pump
DE4016462A1 (en) * 1989-12-06 1991-06-13 Bosch Gmbh Robert FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES

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EP0717181A3 (en) 1997-08-13
DE4440749A1 (en) 1996-05-23
EP0717181A2 (en) 1996-06-19
JPH08210154A (en) 1996-08-20

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