US3757796A - Device for regulating the flow of fuel injected into an internal combustion engine - Google Patents

Device for regulating the flow of fuel injected into an internal combustion engine Download PDF

Info

Publication number
US3757796A
US3757796A US00253422A US3757796DA US3757796A US 3757796 A US3757796 A US 3757796A US 00253422 A US00253422 A US 00253422A US 3757796D A US3757796D A US 3757796DA US 3757796 A US3757796 A US 3757796A
Authority
US
United States
Prior art keywords
chamber
movable member
movable
regulating
defining
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 - Lifetime
Application number
US00253422A
Other languages
English (en)
Inventor
G Boue
M Vidberg
Original Assignee
Peugeot & Renault
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 Peugeot & Renault filed Critical Peugeot & Renault
Application granted granted Critical
Publication of US3757796A publication Critical patent/US3757796A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/30—Varying fuel delivery in quantity or timing with variable-length-stroke pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • 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
    • F02M69/30—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines
    • F02M69/36—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages
    • F02M69/40—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages using variably controlled air pressure, e.g. by modifying the intake air vacuum signal acting on the fuel metering device

Definitions

  • a rolling diaphragm is exposed on one side to the pressure prevailing in the induction pipe of the engine and on the other side to a pressure in the neighbourhood of atmospheric pressure by way of a conduit in which a valve device is inserted for normally closing the conduit.
  • the valve device is shifted to the conduit opening position when a cam regulating the amount of fuel injected reaches the vicinity of an extreme position corresponding to predetermined conditions of engine operation.
  • the present invention relates to an improvement in the device for regulating the flow of fuel injected into an internal combustion engine disclosed in the French Pat. No. 1,558,460 filed by the Applicants.
  • the regulation is achieved by means of a diaphragm which is rollable and subjected on one side to the pressure prevailing in the inlet or admission pipe of the engine and on the other side to a pressure intermediate between the foregoing pressure and atmospheric pressure, the diaphragm acting itself on a cam which regulates the amount of fuel injected.
  • An object of the present invention is to overcome this drawback and to achieve distinct cutting off and resumption of the injection when predetermined conditions of operation of the engine are reached.
  • FIG. 1 is an assembly view of the regulating device
  • FIG. 2 is a sectional view, on an enlarged scale, of the closing means and the mechanism for actuating the latter.
  • FIG. 1 shows a regulating device of the general type described in the aforementioned patent comprising a case 1 consisting of a body 1a and a cap 1b assembled by means of flanges 2a, 2b. Between these two flanges there is clamped the edge portion of a rollable diaphragm 3 which constitutes a movable member which defines with the inner wall of the cap lb a first chamber 4 and defines with a transverse partition wall 16 of the case a second chamber 17.
  • the first chamber 4 there prevails a pressure intermediate between atmospheric pressure and the pressure prevailing in the inlet or admission pipe Ill downstream of the butterfly valve or throttle l2, whereas in the second chamber I7 there prevails said pressure prevailing in the inlet pipe.
  • the diaphragm 3 is intergral with a rod 21 whose free end acts on a regulating means which controls the flow of an injection pump and comprises in the known manner a plunger or piston 24 controlled by a push-rod 25 which is shifted by a rotatable cam 26, the variation in the amount of fuel injected for each displacement of the plunger 24 being achieved by varying the position of an end-of-travel abutment 27 for the plunger which is biased by a spring 28.
  • the abutment 27 is constituted by a pivotable lever 29 whose free end defines a curved ramp constituting a cam 30 of suitable profile against which the end of the rod 21 bears through rolling ball means as shown in FIG. ii.
  • a plunger such as the plunger 24 with which are associated an inlet valve Ca and a delivery valve Cr.
  • the abutment 27 is common to all of the injection plungers.
  • the chamber 4 is connected by a conduit to a closing or valve device 101 which is fixed to the body of the injection pump, this device being connected by a second conduit 102 to an enclosure (not shown) in which prevails a pressure in the neighbourhood of atmospheric pressure.
  • This enclosure can be constituted by the air inlet silencer immediately downstream of the air filter (not shown).
  • the closing or valve device 101 comprises a body 103 fixed to the body of the injection pump by means of screws 103a.
  • the body 103 has a stepped bore or aperture 104, 105 and an enlarged bore portion 106 which is screwthreaded and in which is screwthreadedly engaged a housing 107 the position of which determines the regulation of the device.
  • the housing is held in position on its screwthreading by a deformation of the valve body achieved by clamping by means of a screw 10% a slot W9 formed in the body.
  • a seal is provided between the housing 107 and the two portions 104, 1l05 of the bore by means of two sealing rings 110, Mill received in grooves 112, 113 in the housing.
  • the regulating housing is hollow and constitutes a cup in the bottom of which is provided an aperture 114 for the passage of a push-rod MS with provision of clearance.
  • This push-rod is disposed in front of the lever 29 and extends through the case l and the body of the closing device through sealing means 116.
  • a spring 117 bearing against a ring 118 biasesthe pushrod to the right as viewed in FIGS. I and 2, that is, to a position corresponding to closure of the closing device.
  • the housing 1107 also has lateral passages 119 which put its inner cavity 120 in communication with the chamber 121 defined between the two sealing rings 110, 111 with which the conduit 102 also communicates.
  • a plug 1122 is a drive fit in the regulating housing and includes a bore 123 in which is guided the stem of a valve member 1124 which has an annular sealing element 125 which cooperates with the end of the housing 107 and constitutes a seat around the aperture 114.
  • a spring 1127 biases the valve member towards its closing position.
  • the abutment 27 is spaced away from the push-rod 115 so that the valve member 124 bears against its seat 107.
  • the conduit 100 is closed and the chamber 4 is subjected, as described in the French Pat. No. 1,558,460, to a pressure intermediate between atmospheric pressure and the pressure prevailing in the inlet or admission pipe of the engine.
  • the lever 29 carrying the cam 30, which determines the richness of the fuel mixture pivots in the direction of arrow F so as to decrease the amount of fuel injected.
  • the lever 29 depresses the push-rod 115 and this shifts the valve member 124 to the left, as viewed in FIG. 2, and puts the chambers 12] and 128 in communication with each other.
  • the chamber 4 of the regulating device is suddenly put in communication with a pressure in the neighbourhood of atmospheric pressure.
  • the diaphragm 3 and the rod 21 connected to the latter are shifted rapidly downwardly and this causes the cam 30 and the lever 29 to pivot and cut off the injection of fuel in a precise manner.
  • a device for regulating the flow of fuel injected into an internal combustion engine by a fuel injecting system comprising means defining a first chamber for connection to an induction pipe of the engine so as to be exposed to the pressure prevailing in the induction pipe, a first movable member having a first face defining a movable wall of the first chamber, means defining a second chamber, the movable member having a face opposed to said first face defining a movable wall of the second chamber, the movable member being movable with respect to the first chamber and second chamber between a first position and a second position, means for regulating the amount of fuel injected into the engine upon each injection effected by the injecting system, cam means operatively connecting the movable member to the regulating means so that movement of the movable member achieves a variation of the amount of fuel injected between a maximum amount in said first position and zero amount in said second position of the movable member, a conduit communicating with the second chamber for connection to an enclosure in which prevails
  • cam means comprise a second member movable by movement of the first member between said first and second positions and the means associated with the cam means comprise a push-rod operatively connected to the valve device and engageable by the second member.
  • valve device comprises a hollow body, a hollow housing mounted in the body, the body and the housing defining a third chamber, means defining within the housing a fourth chamber, the third chamber and the fourth chamber respectively communicating with a downstream part of the conduit and an upstream part of said conduit, the housing having an end wall defining an aperture putting the third chamber and fourth chamber in communication with each other and constituting a valve seat, a valve member co-operative with the seat for selectively preventing and allowing the communication between the third chamber and the fourth chamber according to the position of the valve member.
  • a device as claimed in claim 3, comprising a plug engaged in the housing and defining the fourth chamber, a cavity in the plug, a stem portion on the valve member and guided in the cavity in the plug, and resiliently yieldable means interposed between the plug and the valve member and biasing the valve member to a position for closing the aperture.
  • a device for regulating the flow of fuel injected into an internal combustion engine by a fuel injection system comprising means defining a first chamber for connection to an air-induction pipe of the engine so as to be exposed to the pressure prevailing in the induction pipe, a movable member having a first face defining a movable wall of the first chamber, means defining a second chamber, the movable member having a second face which is opposed to said first face and defines a movable wall of the second chamber, the movable member being movable between a first position and a second position with respect to the first chamber and second chamber, means for regulating the amount of fuel injected upon each injection effected by the injection system and associated with the movable member so that the movable member actuates the regulating means and achieves a variation of the amount of fuel injected between a maximum amount in said first position of the movable member and zero in said second position of the movable member, means for putting the second chamber in communication with a pressure in the neighbourhood of atmospheric pressure and

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
US00253422A 1971-06-17 1972-05-15 Device for regulating the flow of fuel injected into an internal combustion engine Expired - Lifetime US3757796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7121982A FR2142215A6 (enrdf_load_stackoverflow) 1971-06-17 1971-06-17

Publications (1)

Publication Number Publication Date
US3757796A true US3757796A (en) 1973-09-11

Family

ID=9078809

Family Applications (1)

Application Number Title Priority Date Filing Date
US00253422A Expired - Lifetime US3757796A (en) 1971-06-17 1972-05-15 Device for regulating the flow of fuel injected into an internal combustion engine

Country Status (5)

Country Link
US (1) US3757796A (enrdf_load_stackoverflow)
DE (1) DE2219961C3 (enrdf_load_stackoverflow)
FR (1) FR2142215A6 (enrdf_load_stackoverflow)
GB (1) GB1390818A (enrdf_load_stackoverflow)
IT (1) IT1045076B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850154A (en) * 1972-06-19 1974-11-26 Deutsche Vergaser Gmbh Co Kg Fuel control for externally ignited internal combustion engines
US3916861A (en) * 1972-10-06 1975-11-04 Nippon Denso Co Pneumatic governor system for fuel injection pump
US4121559A (en) * 1975-12-29 1978-10-24 Yamaha Hatsudoki Kabushiki Kaisha Lubricant oil pump for two-cycle engines
US4176641A (en) * 1976-12-30 1979-12-04 Cummins Engine Company, Inc. Aneroid for a turbocharged engine
US4388825A (en) * 1977-05-17 1983-06-21 The Bendix Corporation Integral manifold absolute pressure and ambient absolute pressure sensor and associated electronics

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2901779C2 (de) * 1979-01-18 1986-01-16 Franz Prof. Dipl.-Ing. Dr.Techn. 5100 Aachen Pischinger Vorrichtung zur Steuerung der Fördermenge einer Einspritzpumpe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US270334A (en) * 1883-01-09 Cock for water-closets
US2752906A (en) * 1954-07-12 1956-07-03 Cav Ltd Pneumatic governors for liquid-fuel injection pumps
US3384060A (en) * 1965-07-30 1968-05-21 Publicite Francaise Device correcting the amount of fuel injected into an internal combustion engine
FR1558460A (enrdf_load_stackoverflow) * 1967-12-20 1969-02-28

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US270334A (en) * 1883-01-09 Cock for water-closets
US2752906A (en) * 1954-07-12 1956-07-03 Cav Ltd Pneumatic governors for liquid-fuel injection pumps
US3384060A (en) * 1965-07-30 1968-05-21 Publicite Francaise Device correcting the amount of fuel injected into an internal combustion engine
FR1558460A (enrdf_load_stackoverflow) * 1967-12-20 1969-02-28

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850154A (en) * 1972-06-19 1974-11-26 Deutsche Vergaser Gmbh Co Kg Fuel control for externally ignited internal combustion engines
US3916861A (en) * 1972-10-06 1975-11-04 Nippon Denso Co Pneumatic governor system for fuel injection pump
US4121559A (en) * 1975-12-29 1978-10-24 Yamaha Hatsudoki Kabushiki Kaisha Lubricant oil pump for two-cycle engines
US4176641A (en) * 1976-12-30 1979-12-04 Cummins Engine Company, Inc. Aneroid for a turbocharged engine
US4388825A (en) * 1977-05-17 1983-06-21 The Bendix Corporation Integral manifold absolute pressure and ambient absolute pressure sensor and associated electronics

Also Published As

Publication number Publication date
DE2219961B2 (de) 1973-06-28
DE2219961C3 (de) 1974-01-24
GB1390818A (en) 1975-04-16
FR2142215A6 (enrdf_load_stackoverflow) 1973-01-26
DE2219961A1 (de) 1973-01-04
IT1045076B (it) 1980-05-10

Similar Documents

Publication Publication Date Title
US4005578A (en) Method and apparatus for turbocharger control
US3774583A (en) Venturi vacuum responsive exhaust gas recirculation control system
US3783847A (en) Engine spark control and exhaust gas recirculation vacuum signal selector
US4075294A (en) Carburetor accelerating fuel circuit means
US4369753A (en) Pressure mediated diesel engine exhaust gas recirculation control system
US4228773A (en) Device to activate an adjusting member in dependence on load
EP0598990B1 (en) Carburetor with accelerator and idle circuit shut-off
US3817456A (en) Fuel injection nozzle for internal combustion engines
US3752141A (en) Vacuum controlled carburetor throttle valve positioner
US3842814A (en) Exhaust gas recirculation system
US4080941A (en) Device for recycling the exhaust gases of an internal combustion engine
US3730154A (en) Engine spark timing control
US3757796A (en) Device for regulating the flow of fuel injected into an internal combustion engine
US3800758A (en) Temperature actuated engine spark vacuum control system
US4300515A (en) Apparatus for actuating an adjustment device acting upon a control apparatus for exhaust recirculation in internal combustion engines
US4302404A (en) Variable Venturi carburetor
US3460814A (en) Fuel-air mixture intake systems for internal combustion engines
US3978831A (en) Control device for a vacuum advancer
US2452698A (en) Carburetor
US3788291A (en) Unitized distributor vacuum spark advance control valve with regulator
US5497746A (en) Two-stage valve for feeding air to injectors of an internal combustion engine
US4316437A (en) Acceleration controlling device for an automobile vehicle
US3596644A (en) Engine distributor spark advance system
US3699936A (en) Accelerator pump controlled engine spark timing
US3774582A (en) Idling speed control system for an automotive gasoline powered internal combustion engine