GB1342357A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1342357A
GB1342357A GB3055070A GB1342357DA GB1342357A GB 1342357 A GB1342357 A GB 1342357A GB 3055070 A GB3055070 A GB 3055070A GB 1342357D A GB1342357D A GB 1342357DA GB 1342357 A GB1342357 A GB 1342357A
Authority
GB
United Kingdom
Prior art keywords
fuel
line
restricted
piston
pump
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
GB3055070A
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.)
CAV Ltd
Original Assignee
CAV 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 CAV Ltd filed Critical CAV Ltd
Publication of GB1342357A publication Critical patent/GB1342357A/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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/083—Having two or more closing springs acting on injection-valve
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors

Landscapes

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

Abstract

1342357 Supplying fuel to I C engines; fuel injectors C A V Ltd 10 June 1971 [24 June 1970] 30550/70 Heading F1B In a fuel injection system in which a pump 10 supplies fuel through a line 12 to an injection orifice 11a of an injector 11, the flow of fuel to the orifice during each injection stroke of the pump is initially at a restricted rate. In Fig.1 the flow rate is restricted by a restrictor 13 in the line 12 until the pump delivery is sufficient to open a relief valve 15 and displace a spring loaded piston 17. Displacement of the piston 17 opens a by-pass 18 around the restrictor 13. In Fig.2 the initial restricted flow is determined by the spacing between the injector's valve member 20 and its seating 21, which spacing initially increases against the action of a weak spring 22 until limited by the engagement of stops 24. During this initial period relief through the valve 15 occurs and when further relief is prevented by the piston 17 having completed its stroke, pressure in the line 12 increases thereby to displace the valve member 20 against the action of a strong spring 26 until limited by a stop 25.
GB3055070A 1970-06-24 1970-06-24 Fuel injection systems Expired GB1342357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3055070 1970-06-24

Publications (1)

Publication Number Publication Date
GB1342357A true GB1342357A (en) 1974-01-03

Family

ID=10309395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3055070A Expired GB1342357A (en) 1970-06-24 1970-06-24 Fuel injection systems

Country Status (5)

Country Link
US (1) US3747857A (en)
JP (1) JPS511806B1 (en)
DE (1) DE2131072A1 (en)
FR (1) FR2099831A5 (en)
GB (1) GB1342357A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375130A2 (en) * 1988-12-20 1990-06-27 LUCAS INDUSTRIES public limited company Fuel injection nozzle
DE19612721A1 (en) * 1995-03-30 1996-10-02 Avl Verbrennungskraft Messtech Stored fuel-injection system with preinjection for IC engine

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1420931A (en) * 1972-01-15 1976-01-14 Cav Ltd Fuel injection nozzles
JPS5315110U (en) * 1976-07-20 1978-02-08
JPS5515127U (en) * 1978-07-14 1980-01-30
US4250857A (en) * 1978-09-13 1981-02-17 The Bendix Corporation Fuel injector for producing shaped injection pulses
JPH0517418Y2 (en) * 1986-12-22 1993-05-11
GB8709038D0 (en) * 1987-04-15 1987-05-20 Perkins Engines Group Fuel injection
GB8820706D0 (en) * 1988-09-01 1988-10-05 Lucas Ind Plc Fuel injection systems
JPH0286953A (en) * 1988-09-21 1990-03-27 Kanesaka Gijutsu Kenkyusho:Kk Fuel injection valve
JPH0354358A (en) * 1989-07-21 1991-03-08 Yamaha Motor Co Ltd High pressure fuel injection device of engine
US5029568A (en) * 1990-01-10 1991-07-09 Cummins Engine Company, Inc. Injection rate control injector
CN1055745C (en) 1993-05-06 2000-08-23 卡明斯发动机公司 Compact high performance fuel syste with accumulator
US5678521A (en) * 1993-05-06 1997-10-21 Cummins Engine Company, Inc. System and methods for electronic control of an accumulator fuel system
US5647536A (en) * 1995-01-23 1997-07-15 Cummins Engine Company, Inc. Injection rate shaping nozzle assembly for a fuel injector
US5619969A (en) * 1995-06-12 1997-04-15 Cummins Engine Company, Inc. Fuel injection rate shaping control system
GB9600771D0 (en) * 1996-01-13 1996-03-20 Lucas Ind Plc Fuel pump
US5765755A (en) * 1997-01-23 1998-06-16 Cummins Engine Company, Inc. Injection rate shaping nozzle assembly for a fuel injector
US6073862A (en) * 1998-09-16 2000-06-13 Westport Research Inc. Gaseous and liquid fuel injector
US6336598B1 (en) 1998-09-16 2002-01-08 Westport Research Inc. Gaseous and liquid fuel injector with a two way hydraulic fluid control valve
DE19907348A1 (en) * 1999-02-20 2000-08-24 Bosch Gmbh Robert Vehicle engine fuel injection valve, with fuel transfer achieved by springs which are stressed by valve member in opening stroke
DE60015218T2 (en) * 1999-04-01 2006-02-16 Delphi Technologies, Inc., Troy Fuel injector
US6360727B1 (en) 2000-03-14 2002-03-26 Alfred J. Buescher Reduce initial feed rate injector with fuel storage chamber
US6354271B1 (en) 2000-12-11 2002-03-12 Caterpillar Inc. Hydraulically-actuated fuel injector with enhanced peak injection pressure and stepped top intensifier
US6439201B1 (en) * 2000-12-20 2002-08-27 Caterpillar Inc. Fuel injector having dual flow rate capabilities and engine using same
US7334741B2 (en) * 2005-01-28 2008-02-26 Cummins Inc. Fuel injector with injection rate control

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1890702A (en) * 1929-07-22 1932-12-13 Sulzer Ag Fuel injection device for internal combustion engines
US2279010A (en) * 1941-08-19 1942-04-07 American Locomotive Co Fuel injection apparatus
GB785411A (en) * 1955-02-23 1957-10-30 Saurer Ag Adolph Improvements in and relating to injection nozzles for internal combustion engines
US2788246A (en) * 1956-06-27 1957-04-09 Alco Products Inc Fuel injectors
US3115304A (en) * 1961-10-11 1963-12-24 Gen Motors Corp Fuel injector pump with hydraulically controlled injection valve
GB1094659A (en) * 1964-10-26 1967-12-13 Ricardo & Co Engineers Fuel injection apparatus for internal combustion engines
US3352245A (en) * 1965-12-09 1967-11-14 Allis Chalmers Mfg Co Fuel injection system
CH447714A (en) * 1967-03-22 1967-11-30 Huber Robert Safety device on electromagnetic injection valves of internal combustion engines
DE1950144A1 (en) * 1969-10-04 1971-04-15 Ricardo & Co Engineers Fuel injection system
FR2064651A5 (en) * 1969-10-07 1971-07-23 Ricardo Et Co

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375130A2 (en) * 1988-12-20 1990-06-27 LUCAS INDUSTRIES public limited company Fuel injection nozzle
EP0375130A3 (en) * 1988-12-20 1991-02-06 LUCAS INDUSTRIES public limited company Fuel injection nozzle
DE19612721A1 (en) * 1995-03-30 1996-10-02 Avl Verbrennungskraft Messtech Stored fuel-injection system with preinjection for IC engine
DE19612721C2 (en) * 1995-03-30 2000-11-02 Avl Verbrennungskraft Messtech Accumulator injection system with pre-injection for an internal combustion engine

Also Published As

Publication number Publication date
FR2099831A5 (en) 1972-03-17
DE2131072A1 (en) 1971-12-30
US3747857A (en) 1973-07-24
JPS511806B1 (en) 1976-01-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee