GB1399363A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1399363A
GB1399363A GB3796872A GB3796872A GB1399363A GB 1399363 A GB1399363 A GB 1399363A GB 3796872 A GB3796872 A GB 3796872A GB 3796872 A GB3796872 A GB 3796872A GB 1399363 A GB1399363 A GB 1399363A
Authority
GB
United Kingdom
Prior art keywords
fuel
valve
valve member
chambers
diaphragm
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
GB3796872A
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
Priority claimed from DE19712140964 external-priority patent/DE2140964C3/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1399363A publication Critical patent/GB1399363A/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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/16—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors
    • F02M69/18—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air
    • F02M69/22—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air the device comprising a member movably mounted in the air intake conduit and displaced according to the quantity of air admitted to the engine

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

1399363 Regulating fuel injection ROBERT BOSCH GmbH 15 Aug 1972 [16 Aug 1971] 37968/72 Heading F1B A low pressure continuous fuel injection system for a spark-ignited I.C. engine comprises a measuring element 2 and an arbitrarily-openable throttle valve 6 arranged one downstream of the other in an inlet manifold 3, the element 2 being movable in proportion to the air-flow against a return force, in a manifold section formed from individual frusto-conical portions of which contiguous portions subtend different included angles, to slidably move a valve member 11 to meter the fuel supply proportionate to the air supply the return force being provided by a fluid continuously derived from a constant pressure source and acting on the valve member via a throttle 57. Fuel is pumped from reservoir 16 to the metering valve 7 via line 17 and flows via duct 22 and groove 23 to chambers 24 to act on one side of diaphragm 25. Movement of the valve member 11 causes the groove 23 to uncover ports 26 to feed pressure fuel to chambers 28 and thence to the individual injection valves in the intake manifold. Springs 30 hold the diaphragm away from the inner end of duct 29 when the engine is stopped. The diaphragm boxes formed by chambers 24, 28 cause the pressure head at the metering valve to remain substantially constant. The fuel pressure is applied to the valve member 11 through throttles 35, 57. The annular crosssection between the plate 2 and the inner periphery of each frusto-conical portion is proportional to the travel of plate 2 to give linear dependence between the movement of plate 2 and valve spool 11.
GB3796872A 1971-08-16 1972-08-15 Fuel injection systems Expired GB1399363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712140964 DE2140964C3 (en) 1971-08-16 Fuel injection system for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1399363A true GB1399363A (en) 1975-07-02

Family

ID=5816860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3796872A Expired GB1399363A (en) 1971-08-16 1972-08-15 Fuel injection systems

Country Status (3)

Country Link
JP (1) JPS5435257B2 (en)
FR (1) FR2149501B1 (en)
GB (1) GB1399363A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001129A (en) * 1977-07-12 1979-01-24 Ntn Toyo Bearing Co Ltd Fuel feeding apparatus for internal combustion engine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54153B2 (en) * 1974-05-21 1979-01-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001129A (en) * 1977-07-12 1979-01-24 Ntn Toyo Bearing Co Ltd Fuel feeding apparatus for internal combustion engine
GB2001129B (en) * 1977-07-12 1982-08-04 Ntn Toyo Bearing Co Ltd FUEL FEEDING APPARATUS FOR air fuel combustion mixture

Also Published As

Publication number Publication date
DE2140964A1 (en) 1973-03-01
JPS5435257B2 (en) 1979-11-01
FR2149501A1 (en) 1973-03-30
JPS4828827A (en) 1973-04-17
FR2149501B1 (en) 1979-09-21
DE2140964B2 (en) 1977-02-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee