GB1319540A - Fuel injection systems - Google Patents

Fuel injection systems

Info

Publication number
GB1319540A
GB1319540A GB3326570A GB3326570A GB1319540A GB 1319540 A GB1319540 A GB 1319540A GB 3326570 A GB3326570 A GB 3326570A GB 3326570 A GB3326570 A GB 3326570A GB 1319540 A GB1319540 A GB 1319540A
Authority
GB
United Kingdom
Prior art keywords
fuel
line
nozzle
pressure
flow
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
GB3326570A
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
Publication of GB1319540A publication Critical patent/GB1319540A/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
    • F02M69/26—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 varying fuel pressure in a fuel by-pass passage, the pressure acting on a throttle valve against the action of metered or throttled fuel pressure for variably throttling fuel flow to injection nozzles, e.g. to keep constant the pressure differential at the metering 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/047—Injectors peculiar thereto injectors with air chambers, e.g. communicating with atmosphere for aerating the nozzles
    • 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
    • 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
    • F02M69/28—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for cutting-out the fuel supply to the engine or to main injectors during certain operating periods, e.g. deceleration

Abstract

1319540 Regulating fuel injection engines ROBERT BOSCH GmbH 9 July 1970 [9 July 1969] 33265/70 Heading F1B A fuel injection system comprises in an air intake pipe 1, a manually operable throttle 3 and a throttling element 2, responsive to pressure upstream and downstream of it, controlling a fuel metering valve 14 to operate with a constant pressure gradient, and a fuel injection nozzle in which the fuel is treated with air from the intake pipe. A control spool of the metering valve has an oblique control edge 14' which is rotated to control a flow cross-section, the spool being also axially displaceable to shut off fuel flow. The fuel injection nozzle has a liquid nozzle 40, a space 51 for introducing air, an intermediate nozzle 52 and a normally open liquid nozzle closing element 38 hydraulically controlled by the control spool. A pump 16 supplies fuel via line 19, flow area 22, chamber 25 and line 29 to the fuel nozzle 34 where it enters a chamber 50 tangentially. The pressure across flow area 22 is controlled by a spool 26 moved by a diaphragm 27 subjected to the fuel pressure upstream and downstream of area 22. When fuel-flow should cease e.g. during engine overrun, an electromagnet 37 is energized to move spool 14 to the right thereby admitting fuel pressure via groove 42 and line 41 to act on member 38 which closes nozzle 40. When fuel flow is restarted member 38 is spring returned and the fuel pressure in line 41 is relieved through line 43. A valve 44 maintains the fuel in line 41 at low-pressure. In modifications element 2 may be replaced by a piston, pivoting valve or a baffle plate and piston 5 may be replaced by a diaphragm.
GB3326570A 1969-07-09 1970-07-09 Fuel injection systems Expired GB1319540A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691934705 DE1934705B2 (en) 1969-07-09 1969-07-09 FUEL INJECTION SYSTEM FOR MIXED COMPRESSING, EXTERNAL IGNITION COMBUSTION MACHINES

Publications (1)

Publication Number Publication Date
GB1319540A true GB1319540A (en) 1973-06-06

Family

ID=5739252

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3326570A Expired GB1319540A (en) 1969-07-09 1970-07-09 Fuel injection systems

Country Status (4)

Country Link
US (1) US3606872A (en)
DE (1) DE1934705B2 (en)
FR (1) FR2054293A5 (en)
GB (1) GB1319540A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2511594A (en) * 2012-11-12 2014-09-10 Hamilton Sundstrand Corp Low hysteresis fluid metering valve

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2053000A1 (en) * 1970-10-28 1972-05-04 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system
AU5098373A (en) * 1972-04-17 1974-07-11 Ford Motor Company Of Canada, Limited System and method for supplying airto a fuel-injected internal combustion engine
DE2409775C2 (en) * 1974-03-01 1982-05-06 Robert Bosch Gmbh, 7000 Stuttgart Air-fuel ratio control system of an internal combustion engine
GB1554234A (en) * 1975-07-08 1979-10-17 Bosch Gmbh Robert Fuel supply systems for internal combustion engines
US4157701A (en) * 1977-06-15 1979-06-12 Hewitt John T Diesel engine control means
DE2924056C2 (en) * 1979-06-15 1982-06-09 Pierburg Gmbh & Co Kg, 4040 Neuss Fuel injector
DE4401074B4 (en) * 1994-01-15 2007-01-18 Robert Bosch Gmbh Pump arrangement, in particular for conveying fuel from a reservoir to an internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2511594A (en) * 2012-11-12 2014-09-10 Hamilton Sundstrand Corp Low hysteresis fluid metering valve
GB2511594B (en) * 2012-11-12 2018-12-26 Hamilton Sundstrand Corp Low hysteresis fluid metering valve

Also Published As

Publication number Publication date
DE1934705A1 (en) 1971-01-14
US3606872A (en) 1971-09-21
FR2054293A5 (en) 1971-04-16
DE1934705B2 (en) 1976-11-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees