US3699941A - Fuel control apparatus - Google Patents

Fuel control apparatus Download PDF

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Publication number
US3699941A
US3699941A US100860A US3699941DA US3699941A US 3699941 A US3699941 A US 3699941A US 100860 A US100860 A US 100860A US 3699941D A US3699941D A US 3699941DA US 3699941 A US3699941 A US 3699941A
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US
United States
Prior art keywords
cam
cam follower
engine
follower
response
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
US100860A
Other languages
English (en)
Inventor
Ronald William Hughes
Alan Boyse
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3699941A publication Critical patent/US3699941A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/001—Arrangements thereof
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/02—Controlling by changing the air or fuel supply
    • F02D2700/0269—Controlling by changing the air or fuel supply for air compressing engines with compression ignition
    • F02D2700/0282—Control of fuel supply
    • F02D2700/0284—Control of fuel supply by acting on the fuel pump control element
    • F02D2700/0294—Control of fuel supply by acting on the fuel pump control element depending on another parameter

Definitions

  • ABSTRACT An apparatus for controlling a fuel injection system 1970 Great Bntam "560/70 for an engine includes a-carn rotatable in response to engine temperature and a cam follower selectively en- [52] US.
  • This invention relates to an apparatus which controls a fuel injection system for an engine by varying the position of a control stop on a metering pump for the said system.
  • an apparatus of the foregoing kind comprises a first cam means for moving the first cam in response to'the temperature of the engine, a first cam follower co-acting with the first cam, means actuated during engine starting for varying the response of the first cam follower to movement of the first cam, a second cam movable by the first cam follower, a second cam follower engaged with the second cam and movable relative thereto in response to an engine operating condition and means for transmitting the resultant position of the second cam follower to the control stop.
  • FIG. 1 shows, somewhat diagrammatically, a section through a control apparatus
  • FIG. 2 is a section on lines 2-2 in FIG. 1, and,
  • FIG. 3 is a view on arrow 3 in FIG. 2.
  • the apparatus has a body which includes a chamber 11 through which passes, in use, a coolant for an associated engine.
  • a capsule 12 having a stud l3 axially movable in response to changes in temperature of capsule 12 and threadedly engaging a plunger 14.
  • Plunger 14 is biased towards capsule 12 by a spring 17.
  • Plunger 14 is slidable within a further plunger 15 which is in turn slidable in body 10.
  • a pin 45 extends through plunger 14 into a pair of slots 46 in plunger 15.
  • a spring 16 urges plungers 14, 15 apart so that pin 45 engages one end of slots 46.
  • the end 18 of plunger 15 is formed as a valve control member and combines with a port 19 in the body 10 to provide a metering orifice through which, an additional air supply may reach the engine.
  • An edge cam 20 is rotatably mounted in the body 10 and includes an arm 21 which engages a slot 22 in plunger 15.
  • a cam follower 23 is supported on a spindle 24 mounted in body 10.
  • Cam follower 23 includes follower members 25, 26 engageable with different portions of edge cam 20 and also includes a portion 27 engageable by the plunger of a solenoid 28.
  • Also supported on spindle 24 is a crank 29 which engages a cam plate 30 pivotally mounted in body 10.
  • a torsion spring 44 engages body 10 and cam follower 23 to bias the latter in a clockwise direction, as seen in FIG. 1, and a spring 31 biases cam plate 30 in an anticlockwise direction, as seen in FIG. 3, into engagement with a crank 29.
  • Cam follower 23 thus controls the angular position of cam plate 30.
  • a diaphragm assembly 32 includes a diaphragm 33 sealingly engaged between a part of the body 10 and a cover member 34.
  • the diaphragm assembly also includes a number of reinforcing members 35 with which is engaged an eye bolt 36. Pivoted on the bolt 36 is a cam follower 37 in the form of a pair of arms 38 supporting between them a roller 39 which engages the cam plate 30.
  • a pair of inwardly directed abutments 40 on the arms 38 engage the cam plate 30 to steady the cam follower 37.
  • the roller 39 abuts one end of a piston-like member 41 which is slidable in the casing 10 and whose other end abuts a control stop forming part of a known type of fuel injection pump 43.
  • the member 41 is biased towards the cam plate 30 by the pressure of fuel within the pump 43.
  • An apparatus for controlling a fuel injection system for an engine by varying the position of a control stop on a metering pump in said system comprises a first cam, means for moving the first cam in response to the temperature of the engine, a first cam follower ineluding first and second cam follower elements selectively engageable with the first cam, means actuated during engine starting for moving said first cam follower to engage one of said elements with the first cam and dis-engage the other of said elements to vary the response of the first cam follower to movement of the first cam, a second cam movable by the first cam follower, a second cam follower engaged with the second cam and movable relative thereto in response to an engine operating condition and means for transmitting the resultant position of the second cam follower to the control stop.
  • the means for moving the first cam comprises a temperature sensitive capsule mounted in a chamber through which, in use, passes a coolant for the engine.
  • An apparatus as claimed in claim 1 in which said means actuated during engine starting comprises an electro-magnetic actuator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Transmission Devices (AREA)
US100860A 1970-01-06 1970-12-23 Fuel control apparatus Expired - Lifetime US3699941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB56070 1970-01-06

Publications (1)

Publication Number Publication Date
US3699941A true US3699941A (en) 1972-10-24

Family

ID=9706522

Family Applications (1)

Application Number Title Priority Date Filing Date
US100860A Expired - Lifetime US3699941A (en) 1970-01-06 1970-12-23 Fuel control apparatus

Country Status (6)

Country Link
US (1) US3699941A (de)
CA (1) CA921348A (de)
DE (1) DE2100252C3 (de)
FR (1) FR2075225A5 (de)
GB (1) GB1328805A (de)
SE (1) SE368978B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884205A (en) * 1972-08-10 1975-05-20 Bosch Gmbh Robert Centrifugal RPM governor for fuel injected internal combustion engines
US4147148A (en) * 1977-05-19 1979-04-03 Toyota Jidosha Kogyo Kabushiki Kaisha Fuel control apparatus for a diesel engine
US4193384A (en) * 1976-05-14 1980-03-18 Robert Bosch Gmbh Fuel injection system
US4223653A (en) * 1978-04-01 1980-09-23 Robert Bosch Gmbh Control apparatus for limiting the fuel supply quantity of a fuel injection pump for internal combustion engines
US4450804A (en) * 1982-05-08 1984-05-29 Vdo Adolf Schindling Ag Apparatus for increasing idling speed
US4656980A (en) * 1984-07-11 1987-04-14 Diesel Kiki Co., Ltd. Centrifugal governor for internal combustion engines
US4969436A (en) * 1988-02-18 1990-11-13 Kloeckner-Humboldt-Deutz Ag Diesel engine injection pump governor
US5255652A (en) * 1992-03-27 1993-10-26 Robert Bosch Gmbh Speed governor for fuel injection pumps
US5307775A (en) * 1991-06-19 1994-05-03 Robert Bosch Gmbh Speed governor for internal combustion engines

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2731913A1 (de) * 1977-07-14 1979-02-01 Daimler Benz Ag Leerlaufeinstellvorrichtung fuer einspritzpumpen, insbesondere diesel-einspritzpumpen
DE2942493A1 (de) * 1979-10-20 1981-04-30 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
SE468525B (sv) * 1991-06-03 1993-02-01 Volvo Penta Ab Start- och stoppanordning foer dieselmotorer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884205A (en) * 1972-08-10 1975-05-20 Bosch Gmbh Robert Centrifugal RPM governor for fuel injected internal combustion engines
US4193384A (en) * 1976-05-14 1980-03-18 Robert Bosch Gmbh Fuel injection system
US4147148A (en) * 1977-05-19 1979-04-03 Toyota Jidosha Kogyo Kabushiki Kaisha Fuel control apparatus for a diesel engine
US4223653A (en) * 1978-04-01 1980-09-23 Robert Bosch Gmbh Control apparatus for limiting the fuel supply quantity of a fuel injection pump for internal combustion engines
US4450804A (en) * 1982-05-08 1984-05-29 Vdo Adolf Schindling Ag Apparatus for increasing idling speed
US4656980A (en) * 1984-07-11 1987-04-14 Diesel Kiki Co., Ltd. Centrifugal governor for internal combustion engines
US4969436A (en) * 1988-02-18 1990-11-13 Kloeckner-Humboldt-Deutz Ag Diesel engine injection pump governor
US5307775A (en) * 1991-06-19 1994-05-03 Robert Bosch Gmbh Speed governor for internal combustion engines
US5255652A (en) * 1992-03-27 1993-10-26 Robert Bosch Gmbh Speed governor for fuel injection pumps

Also Published As

Publication number Publication date
DE2100252A1 (de) 1971-07-15
GB1328805A (en) 1973-09-05
CA921348A (en) 1973-02-20
DE2100252C3 (de) 1974-12-12
DE2100252B2 (de) 1974-05-09
FR2075225A5 (de) 1971-10-08
SE368978B (de) 1974-07-29

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