EP0181242A1 - Benzindruckregler - Google Patents

Benzindruckregler Download PDF

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Publication number
EP0181242A1
EP0181242A1 EP85401938A EP85401938A EP0181242A1 EP 0181242 A1 EP0181242 A1 EP 0181242A1 EP 85401938 A EP85401938 A EP 85401938A EP 85401938 A EP85401938 A EP 85401938A EP 0181242 A1 EP0181242 A1 EP 0181242A1
Authority
EP
European Patent Office
Prior art keywords
cups
chambers
membranes
regulator
valve
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.)
Granted
Application number
EP85401938A
Other languages
English (en)
French (fr)
Other versions
EP0181242B1 (de
Inventor
Jean-Marie Pierret
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.)
Ducellier et Cie
Original Assignee
Ducellier et Cie
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 Ducellier et Cie filed Critical Ducellier et Cie
Publication of EP0181242A1 publication Critical patent/EP0181242A1/de
Application granted granted Critical
Publication of EP0181242B1 publication Critical patent/EP0181242B1/de
Expired legal-status Critical Current

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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
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators
    • 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
    • F02M69/20—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 being a servo-motor, e.g. using engine intake air pressure or vacuum

Definitions

  • the present invention relates to a fuel pressure regulator for supplying an internal combustion engine of a motor vehicle, more particularly for an engine of the type known as single-point injection.
  • the present invention aims to remedy these drawbacks and for this purpose relates to a fuel pressure regulator for the supply of an internal combustion engine of a motor vehicle of the type controlled from the pressure variations existing at different points.
  • the engine manifold and consisting of a box in which are produced several chambers separated by flexible membranes rigidified in their central part by cups connected to each other and one of the membranes of which is integral with a valve the displacement of which it controls relative to the opening of a nozzle opening into one of the chambers, regulator characterized in that the membranes are kept parallel to each other by means of spacers arranged during the mounting of the regulator during crimping of the housing, in two of the consecutive chambers , each spacer bearing on either side of the chamber containing it against the stiffening cups of the membranes delimiting said rooms.
  • the device shown in Figure 1 relates more particularly to an injection engine of the type called "single point".
  • an injector 25 is positioned upstream of the throttle valve 24 and is supplied from a tank 21 through a pump P.
  • a fuel pressure regulator 1 completes the fuel supply circuit and regulates the pressure d gasoline applied to the injector 25, by means of the displacement of a valve 9 which ensures the opening or closing of a nozzle 10 for returning gasoline to the tank 21.
  • This valve 9 is controlled by the displacement of a flexible membrane6 of at least one chamber subjected to the pressure variation at a point in the engine.
  • the gasoline flow rate is a function of the manifold pressure Pm but independent of the pressure Ps prevailing at the outlet of the injector 25 in the intake manifold upstream of the butterfly valve 24.
  • the fuel pressure regulator 1 consists of a housing in which a plurality of chambers 2 to 5 are produced delimited by membranes 6,7,8 elastically deformable and rigidified in part central in known manner by metal cups 14 to 19.
  • the chamber 2 which regulates the petrol pressure "Pe" representative of the petrol pressure at the level of the injector 25 is filled with petrol which arrives by an intake nozzle 11 and is discharged by a return nozzle 10 and contains the valve 9 which follows the movements of the flexible membrane 6 in order to ensure the opening or closing of the return nozzle 10.
  • the chamber 3 which adjoins the chamber 2 is subjected to atmospheric pressure "Pa" by an orifice in the open air 12.
  • the chamber 4 adjoins the chamber 3 and is subjected to the pressure "Pm” called “manifold” by a nozzle 29 connected at 23 to the intake pipe of the engine downstream of the butterfly valve 24.
  • the chamber 5 adjoins the chamber 4 and is subjected by a nozzle 13 to the pressure "Ps" existing at a point 22 upstream of the butterfly valve and at the outlet of the injector 25.
  • the flexible membrane 6 carrying the valve 9 is common to chambers 2 and 3 and is stiffened in its central part by a cup 14 located in chamber 2 and a cup 15 located in chamber 3.
  • a flexible membrane 7 with a surface substantially double that of the membrane 6 separates the chamber 3 from the chamber 4 and also includes a cup 16 located in the chamber 3 and a cup 17 in the chamber 4 which chamber 4 is separated from the chamber. 5 by a flexible membrane 8 with the same surface as that of the membrane 6, and which comprises a cup 18 in the chamber 4 and a cup 19 in the chamber 5.
  • a spring 20 is disposed in the chamber 5 and bears against the housing on the one hand and against the cup 19 on the other hand.
  • any positioning means such as pins 30 obtained from material in said cups 16 and 17 can be provided on the cups facing them 16 and 17.
  • the three membranes 6, 7 and 8 are thus held in contact with each other and control the movement of the valve 9 constituted by a plane valve 26 held in a cage 28 integral with the membrane 6 and rests on an elastic support 27 capable of absorbing the differences in parallelism between the valve 26 and return nozzle 1a ⁇ 10.
  • the elastic support 27 can be a corrugated washer sold under the name "Onduflex" as shown in FIGS. 2 and 3 or any other elastic element capable of ensuring intimate contact between the flat surface of the valve 26 and the opening of the nozzle 10 whatever their respective position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Actuator (AREA)
EP19850401938 1984-11-09 1985-10-04 Benzindruckregler Expired EP0181242B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8417061 1984-11-09
FR8417061A FR2573131B1 (fr) 1984-11-09 1984-11-09 Regulateur de pression d'essence.

Publications (2)

Publication Number Publication Date
EP0181242A1 true EP0181242A1 (de) 1986-05-14
EP0181242B1 EP0181242B1 (de) 1988-06-08

Family

ID=9309410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850401938 Expired EP0181242B1 (de) 1984-11-09 1985-10-04 Benzindruckregler

Country Status (4)

Country Link
EP (1) EP0181242B1 (de)
DE (1) DE3563239D1 (de)
ES (1) ES8701302A1 (de)
FR (1) FR2573131B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837626A (zh) * 2017-03-20 2017-06-13 瑞安市铭硕汽配有限公司 一种燃油压力调节器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147850A (en) * 1935-02-20 1939-02-21 Pittsburgh Equitable Meter Co Gas pressure regulator
FR2276468A1 (fr) * 1974-06-27 1976-01-23 Sibe Perfectionnements aux dispositifs d'alimentation en combustible pour moteurs a combustion interne
US4231347A (en) * 1977-12-19 1980-11-04 Aisin Seiki Kabushiki Kaisha Fuel pressure regulating valve
US4359031A (en) * 1979-03-07 1982-11-16 General Motors Corporation Engine air flow responsive control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147850A (en) * 1935-02-20 1939-02-21 Pittsburgh Equitable Meter Co Gas pressure regulator
FR2276468A1 (fr) * 1974-06-27 1976-01-23 Sibe Perfectionnements aux dispositifs d'alimentation en combustible pour moteurs a combustion interne
US4231347A (en) * 1977-12-19 1980-11-04 Aisin Seiki Kabushiki Kaisha Fuel pressure regulating valve
US4359031A (en) * 1979-03-07 1982-11-16 General Motors Corporation Engine air flow responsive control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837626A (zh) * 2017-03-20 2017-06-13 瑞安市铭硕汽配有限公司 一种燃油压力调节器

Also Published As

Publication number Publication date
DE3563239D1 (en) 1988-07-14
EP0181242B1 (de) 1988-06-08
ES8701302A1 (es) 1986-11-16
FR2573131B1 (fr) 1986-12-26
ES548726A0 (es) 1986-11-16
FR2573131A1 (fr) 1986-05-16

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