FR2264193A2 - Fuel injection system for combustion engines - metering is at constant pressure and between fuel supply line and control pressure circuit is throttle - Google Patents

Fuel injection system for combustion engines - metering is at constant pressure and between fuel supply line and control pressure circuit is throttle

Info

Publication number
FR2264193A2
FR2264193A2 FR7508153A FR7508153A FR2264193A2 FR 2264193 A2 FR2264193 A2 FR 2264193A2 FR 7508153 A FR7508153 A FR 7508153A FR 7508153 A FR7508153 A FR 7508153A FR 2264193 A2 FR2264193 A2 FR 2264193A2
Authority
FR
France
Prior art keywords
valve
pressure
throttle
fuel
metering
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.)
Pending
Application number
FR7508153A
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.)
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 DE2357263A external-priority patent/DE2357263C2/en
Priority claimed from DE2412808A external-priority patent/DE2412808A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2264193A2 publication Critical patent/FR2264193A2/en
Pending 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • 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

Abstract

Fuel injection system for gas mixture in external ignition combustion engines, with a distributor unit and metering valves, which are commonly adjustable to vary the flow section and determine the fuel volume passing to the injection valves. The meering results at constant pressure differential, while a valve is connected in the fuel stream downstream of each metering valve and this valve is variable in section by a flexible component dividing two chambers. In the first chamber the fuel pressure acts on the flexible component in the sense of opening the valve. At least one valve is an equal pressure valve adn one is a differential pressure control valve, whose first chamber is connected with the second chamber of each equal pressure valve. Between the fuel supply line and a control pressure circuit is a first throttle and downstream of this the second chamber of the differential pressure control valve. The differential pressure at the metering valves is varied by varying the pressure difference at the first throttle by a magnetic valve via a storage unit and a second throttle.
FR7508153A 1973-11-16 1975-03-14 Fuel injection system for combustion engines - metering is at constant pressure and between fuel supply line and control pressure circuit is throttle Pending FR2264193A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2357263A DE2357263C2 (en) 1973-11-16 1973-11-16 Fuel injection system for internal combustion engines
DE2412808A DE2412808A1 (en) 1974-03-16 1974-03-16 FUEL INJECTION SYSTEM

Publications (1)

Publication Number Publication Date
FR2264193A2 true FR2264193A2 (en) 1975-10-10

Family

ID=34227371

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7508153A Pending FR2264193A2 (en) 1973-11-16 1975-03-14 Fuel injection system for combustion engines - metering is at constant pressure and between fuel supply line and control pressure circuit is throttle

Country Status (1)

Country Link
FR (1) FR2264193A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689182A1 (en) * 1992-03-26 1993-10-01 Peugeot Fuel supply circuit for motor vehicle engine - uses solenoid valve controlled by an engine operating parameter to divert fuel pump delivery at light load.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689182A1 (en) * 1992-03-26 1993-10-01 Peugeot Fuel supply circuit for motor vehicle engine - uses solenoid valve controlled by an engine operating parameter to divert fuel pump delivery at light load.

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