DE3364046D1 - Electro-hydraulic timing control system for injection pumps of fuel injection internal-combustion engines - Google Patents

Electro-hydraulic timing control system for injection pumps of fuel injection internal-combustion engines

Info

Publication number
DE3364046D1
DE3364046D1 DE8383890050T DE3364046T DE3364046D1 DE 3364046 D1 DE3364046 D1 DE 3364046D1 DE 8383890050 T DE8383890050 T DE 8383890050T DE 3364046 T DE3364046 T DE 3364046T DE 3364046 D1 DE3364046 D1 DE 3364046D1
Authority
DE
Germany
Prior art keywords
solenoid valve
actuator
pressure source
fuel injection
return pipe
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
DE8383890050T
Other languages
German (de)
Inventor
Jaroslaw Dipl Ing Hlousek
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.)
Friedmann and Maier AG
Original Assignee
Friedmann and Maier AG
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 Friedmann and Maier AG filed Critical Friedmann and Maier AG
Application granted granted Critical
Publication of DE3364046D1 publication Critical patent/DE3364046D1/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
    • 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
    • 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)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)

Abstract

1. Electronic-hydraulic timing control system for injection pumps (2) of fuel injection internal-combustion engines, particularly for fuel injection in diesel engines, comprising a processor (54) having a memory for the programme to be performed and data inputs (55) to which are connected sensors for the rpm command or accelerator pedal position, resp., and for operating data of the engine such as temperatures and pressures as well as engine speed and optionally engine torque, and outputs, to which are connected solenoid valves for a hydraulic actuator (4, 17) in the form of a single-acting cylinder to be fed from a pressure source comprising a pump driven by the internal-combustion engine, said actuator engaging the transmission mechanism (3, 9-12) for driving the injection pump(s) (2) against spring action (13), the working chamber of said actuator being connectable to the pressure source or to a return pipe (32, 34) via a solenoid valve arrangement (23, 24, 56, 57), and a pressure reservoir (47) being connected to the pressure source via a check valve (46) opening to the pressure reservoir (47), characterised in that the working chamber of the actuator (4, 17) is connectable via at least one solenoid valve (23, 56, 57) either through a throttle (48) to the pressure source or to the pressure reservoir, and via a further solenoid valve (24) to the return pipe (32, 34), whereat all of the solenoid valves (23, 24, 56, 57) are controllable separately and in the electrical power-off condition the solenoid valve (23, 57) providing the connection to the throttle (48) is open and the solenoid valve (24) providing the connection to the return pipe (32, 34) is closed.
DE8383890050T 1982-04-05 1983-03-30 Electro-hydraulic timing control system for injection pumps of fuel injection internal-combustion engines Expired DE3364046D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT135182 1982-04-05

Publications (1)

Publication Number Publication Date
DE3364046D1 true DE3364046D1 (en) 1986-07-17

Family

ID=3512011

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383890050T Expired DE3364046D1 (en) 1982-04-05 1983-03-30 Electro-hydraulic timing control system for injection pumps of fuel injection internal-combustion engines

Country Status (3)

Country Link
EP (1) EP0090797B1 (en)
AT (1) ATE20377T1 (en)
DE (1) DE3364046D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567577B1 (en) * 1984-07-12 1989-03-03 Cav Roto Diesel IMPROVEMENTS ON FUEL INJECTION PUMPS FOR INTERNAL COMBUSTION ENGINES
FR2972493A1 (en) * 2011-03-11 2012-09-14 Manitou Bf Device for controlling speed of diesel engine of aerial basket lifting device, has electrohydraulic unit acting on fuel supply unit, where hydraulic unit is connected to pressure source and fluid tank

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB579504A (en) * 1943-05-14 1946-08-06 Bendix Aviat Corp Coupling means for shafts and like torque-transmitting members
DE1932600C3 (en) * 1969-06-27 1978-07-27 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for compression ignition engines with a change in the start of injection
JPS5339528B1 (en) * 1971-03-06 1978-10-21
DE2932672A1 (en) * 1979-08-11 1981-02-26 Daimler Benz Ag HYDRAULIC SPRAY ADJUSTER FOR HIGH PRESSURE INJECTION SYSTEMS FOR SELF-IGNITIONING INTERNAL COMBUSTION ENGINES

Also Published As

Publication number Publication date
EP0090797B1 (en) 1986-06-11
EP0090797A1 (en) 1983-10-05
ATE20377T1 (en) 1986-06-15

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee