DE3069719D1 - Fuel-injection device for internal combustion engines, especially for diesel engines - Google Patents

Fuel-injection device for internal combustion engines, especially for diesel engines

Info

Publication number
DE3069719D1
DE3069719D1 DE8080106901T DE3069719T DE3069719D1 DE 3069719 D1 DE3069719 D1 DE 3069719D1 DE 8080106901 T DE8080106901 T DE 8080106901T DE 3069719 T DE3069719 T DE 3069719T DE 3069719 D1 DE3069719 D1 DE 3069719D1
Authority
DE
Germany
Prior art keywords
control
pressure
valve
injection
fuel
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE8080106901T
Other languages
German (de)
Inventor
Jean Leblanc
Jean Pigeroulet
Max Dr Dipl Ing Straubel
Konrad Dr Dipl Ing Eckert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE8080106901T priority Critical patent/DE3069719D1/en
Application granted granted Critical
Publication of DE3069719D1 publication Critical patent/DE3069719D1/en
Expired legal-status Critical Current

Links

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
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/361—Valves being actuated mechanically
    • F02M59/362—Rotary valves
    • 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
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/365—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages valves being actuated by the fluid pressure produced in an auxiliary pump, e.g. pumps with differential pistons; Regulated pressure of supply pump actuating a metering valve, e.g. a sleeve surrounding the pump piston
    • 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
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

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

Abstract

1. Fuel injection device for internal combustion machines, in particular for diesel engines, having, for each working cylinder, one mechanically driven pump piston (14a-14d; 14a'-14d') of an injection pump (12a-12d) supplied by a feed pump (33) with fuel under supply pressure, having, for each working cylinder, a control spool valve (24; 24') operable by the control pressure of a control fuel source (32) common to all the injection pumps, which control spool valve is inserted in a transfer duct (22) continually connected with the pump working space (18) and closes this duct for the initiation of the beginning of injection and opens it again for the termination of injection, and having a control device (48; 48'; 48") by means of which the control pressure can be switched via control lines (29) to the pressure spaces (28) of the control spool valves (24; 24'), characterised by the following features : a) the control fuel source (32) is formed by the feed pump (33) designed for a control pressure (ps ) increased by a multiple relative to the supply pressure (pv ) of the injection pumps (12a to 12d) and by a first pressure limiting valve (35) limiting the control pressure (ps ) in a control pressure line (31) which can be connected to the control lines (29) ; b) a second pressure limiting valve (37), which determines the supply pressure (pv ) occurring in the filling lines (21) separated from the control lines (29), is connected downstream of the first pressure limiting valve (35) ; c) the control device consists of a valve arrangement (36; 48; 48'; 48") determining in common for all the injection pumps (12a to 12d) the beginning and the duration of the period during which the pressure spaces (28) of the control spool valve (24; 24') are subjected to pressure and of a distributor device (43; 53) separate from this valve arrangement, by means of which distributor device one of the control lines (29) leading to the pressure spaces (28) of the control spool valves (24; 24') can be connected at a time, in synchronism with the injections, to the control pressure line (31) ; d) the control pressure (ps ) necessary for operating the control spool valve (24; 24') and to which one of the pressure spaces (28) at a time is subjected via the distributor device (43; 53) is built up by the valve arrangement (36; 48; 48'; 48") blocking the drainage of the control fuel from the control pressure line (31) into a low pressure line (19) and is released again to the low pressure line (19) for the return stroke of the control spool valve (24; 24').
DE8080106901T 1980-01-12 1980-11-08 Fuel-injection device for internal combustion engines, especially for diesel engines Expired DE3069719D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8080106901T DE3069719D1 (en) 1980-01-12 1980-11-08 Fuel-injection device for internal combustion engines, especially for diesel engines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803001051 DE3001051A1 (en) 1980-01-12 1980-01-12 FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY FOR DIESEL ENGINES
DE8080106901T DE3069719D1 (en) 1980-01-12 1980-11-08 Fuel-injection device for internal combustion engines, especially for diesel engines

Publications (1)

Publication Number Publication Date
DE3069719D1 true DE3069719D1 (en) 1985-01-10

Family

ID=6091969

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19803001051 Withdrawn DE3001051A1 (en) 1980-01-12 1980-01-12 FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY FOR DIESEL ENGINES
DE8080106901T Expired DE3069719D1 (en) 1980-01-12 1980-11-08 Fuel-injection device for internal combustion engines, especially for diesel engines

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19803001051 Withdrawn DE3001051A1 (en) 1980-01-12 1980-01-12 FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY FOR DIESEL ENGINES

Country Status (4)

Country Link
EP (1) EP0032168B1 (en)
JP (1) JPS56106060A (en)
AT (1) ATE10532T1 (en)
DE (2) DE3001051A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3124500A1 (en) * 1981-06-23 1983-01-13 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION PUMP
JPS588269A (en) * 1981-07-09 1983-01-18 Nippon Denso Co Ltd Control method of ignition timing in internal-combustion engine
FR2514827A1 (en) * 1981-10-15 1983-04-22 Renault PRESSURE-TIME INJECTION DEVICE WITH PREDOSAGE
JP2760040B2 (en) * 1989-05-01 1998-05-28 トヨタ自動車株式会社 Unit injector fuel supply and discharge device
DE4320620B4 (en) * 1993-06-22 2004-04-01 Robert Bosch Gmbh Fuel injection device for internal combustion engines
NL1014518C2 (en) * 2000-02-29 2001-08-30 Technoscan Engineering B V Device, fuel injection system and method for metering fuel.
CN108730085A (en) * 2017-04-14 2018-11-02 康明斯公司 Inexpensive common rail fuel system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE594336C (en) * 1930-12-22 1934-03-15 Magneti Marelli Spa Fuel injection pump
US2069744A (en) * 1932-01-16 1937-02-09 Ex Cell O Aircraft & Tool Corp Fluid distribution system
US2357563A (en) * 1942-07-23 1944-09-05 Gen Motors Corp Fuel injection pump
DE920881C (en) * 1949-03-05 1954-12-02 Daimler Benz Ag Fuel injection pump for internal combustion engines
US3486493A (en) * 1968-02-13 1969-12-30 Allis Chalmers Mfg Co Fuel injection unit
US3880131A (en) * 1973-06-28 1975-04-29 Bendix Corp Fuel injection system for an internal combustion engine
DE3000977A1 (en) * 1980-01-12 1981-07-23 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY FOR DIESEL ENGINES
DE3000960A1 (en) * 1980-01-12 1981-09-10 Robert Bosch Gmbh, 7000 Stuttgart FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY FOR DIESEL ENGINES

Also Published As

Publication number Publication date
EP0032168B1 (en) 1984-11-28
JPH0346664B2 (en) 1991-07-16
DE3001051A1 (en) 1981-07-16
ATE10532T1 (en) 1984-12-15
EP0032168A1 (en) 1981-07-22
JPS56106060A (en) 1981-08-24

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee