FR2352953A1 - Advance retard system for rotary fuel injector pumps - has cam ring displaced to give extended fuel delivery at low speeds - Google Patents

Advance retard system for rotary fuel injector pumps - has cam ring displaced to give extended fuel delivery at low speeds

Info

Publication number
FR2352953A1
FR2352953A1 FR7716183A FR7716183A FR2352953A1 FR 2352953 A1 FR2352953 A1 FR 2352953A1 FR 7716183 A FR7716183 A FR 7716183A FR 7716183 A FR7716183 A FR 7716183A FR 2352953 A1 FR2352953 A1 FR 2352953A1
Authority
FR
France
Prior art keywords
cam ring
spring
fuel injector
low speeds
piston
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.)
Withdrawn
Application number
FR7716183A
Other languages
French (fr)
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of FR2352953A1 publication Critical patent/FR2352953A1/en
Withdrawn legal-status Critical Current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
    • 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

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

The pump plunger (14) cam ring (12) is displaced in order to vary the fuel injector timing by means of an engine speed dependent fuel lift pump pressure (19) acting on a spring loaded piston (25). The piston is moved against a returns spring force (26) only when the lift pump pressure exceeds a predetermined value. The lift pump pressure reaches the piston (25) and a connection via a restricted boring (34) in a second spring chamber (32) and the cam ring and cam ring adjuster bore (30). The pressure is insufficient at low speed to overcome the main spring (26) but overcomes the second spring (32) as pressure increases to retard the vary the injection timing.
FR7716183A 1976-05-28 1977-05-26 Advance retard system for rotary fuel injector pumps - has cam ring displaced to give extended fuel delivery at low speeds Withdrawn FR2352953A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2238176 1976-05-28

Publications (1)

Publication Number Publication Date
FR2352953A1 true FR2352953A1 (en) 1977-12-23

Family

ID=10178475

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7716183A Withdrawn FR2352953A1 (en) 1976-05-28 1977-05-26 Advance retard system for rotary fuel injector pumps - has cam ring displaced to give extended fuel delivery at low speeds

Country Status (4)

Country Link
JP (1) JPS5317827A (en)
DE (1) DE2724159A1 (en)
FR (1) FR2352953A1 (en)
IT (1) IT1078956B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455680A1 (en) * 1979-05-01 1980-11-28 Nissan Motor INJECTION ADVANCE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
FR2560294A1 (en) * 1983-12-01 1985-08-30 Lucas Ind Plc FUEL INJECTION PUMPING APPARATUS

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2644042C2 (en) * 1976-09-30 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Adjustment device for the start of injection in a fuel injection pump for an internal combustion engine
JPS5854250B2 (en) * 1979-05-01 1983-12-03 日産自動車株式会社 Diesel engine fuel injection timing control device
US4365939A (en) * 1979-07-06 1982-12-28 Lucas Industries Limited Fuel injection pumping apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455680A1 (en) * 1979-05-01 1980-11-28 Nissan Motor INJECTION ADVANCE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
FR2560294A1 (en) * 1983-12-01 1985-08-30 Lucas Ind Plc FUEL INJECTION PUMPING APPARATUS

Also Published As

Publication number Publication date
JPS5317827A (en) 1978-02-18
IT1078956B (en) 1985-05-08
DE2724159A1 (en) 1977-12-08

Similar Documents

Publication Publication Date Title
ES407998A1 (en) Fuel injection apparatus for internal combustion engines
GB1470152A (en) Fuel injection pump for diesel engines
CA1065705A (en) Timing control for fuel injection pump
GB1165941A (en) Fuel Injection Pumps
ES444726A1 (en) Fuel injection pump for internal combustion engines, in particular for diesel engines
JPS5786533A (en) Regulating device of injection timing in distributor type fuel injection pump
JPS551418A (en) Injection timing device for distribution-type fuel injection pump
GB1254394A (en) Improvements in speed governors
GB993888A (en) Improvements in mechanisms for adjusting the start of injection in fuel injection pumps
GB1523429A (en) Timing control for fuel injection pump
GB1180630A (en) Improvements in or relating to Fuel Injection Devices for Compression Ignited Internal Combustion Engines
ES452284A1 (en) Fuel injection pump and timing control therefor
FR2352953A1 (en) Advance retard system for rotary fuel injector pumps - has cam ring displaced to give extended fuel delivery at low speeds
EP0185914A3 (en) Fuel injection pump for internal combustion engines
ES8103591A1 (en) Pumping systems
GB1474217A (en) Speed governors for fuel injection pumps
GB863698A (en) Improvements in or relating to fuel injection pumps
GB1394178A (en) Engine fuel injection apparatus
GB1148905A (en) Improvements in or relating to fuel injection pumps
GB1426726A (en) Liquid fuel pumping apparatus
ES8107363A1 (en) Liquid fuel injection pumps
ES8704589A1 (en) Fuel injection pumps for internal combustion engines
GB1109020A (en) Fuel injection pump assemblies for internal combustion engines
GB1042259A (en) Improvements in fuel injection apparatus for internal combustion engines
GB1403524A (en) Liquid fuel pumping apparatus

Legal Events

Date Code Title Description
ST Notification of lapse