US3802406A - Fuel feed devices for internal combustion engines - Google Patents

Fuel feed devices for internal combustion engines Download PDF

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Publication number
US3802406A
US3802406A US00311560A US31156072A US3802406A US 3802406 A US3802406 A US 3802406A US 00311560 A US00311560 A US 00311560A US 31156072 A US31156072 A US 31156072A US 3802406 A US3802406 A US 3802406A
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US
United States
Prior art keywords
throttle member
principal
elastic means
movable element
fuel feed
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
US00311560A
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English (en)
Inventor
A Mennesson
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.)
Societe Industrielle de Brevets et dEtudes SIBE
Original Assignee
Societe Industrielle de Brevets et dEtudes SIBE
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 Societe Industrielle de Brevets et dEtudes SIBE filed Critical Societe Industrielle de Brevets et dEtudes SIBE
Application granted granted Critical
Publication of US3802406A publication Critical patent/US3802406A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • 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
    • F02D2700/0217—Controlling by changing the air or fuel supply for mixture compressing engines using liquid fuel
    • F02D2700/0225—Control of air or mixture supply
    • F02D2700/0228—Engines without compressor
    • F02D2700/0243—Engines without compressor by means of a plurality of throttle devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20528—Foot operated
    • Y10T74/20534—Accelerator

Definitions

  • a principal throttle member serves to control the flow-rate of air and is opened, against the action of a first elastic means, by an actuating member which is at the disposal of the operator and linked to the principal throttle member through a mechanical transmission.
  • This transmission is coupled to a movable element subject to the action of the first elastic means and cooperating in such a way, with the principal throttle member, that it drives the latter in the direction of opening by mechanical contact and in the direction of closing by a second elastic means less powerful than the first.
  • the intake pipe comprises, downstream of the principal throttle member, an auxiliary throttle member actuated in such a way, by an electromagnet which is controlled by a switch sensitive to the mutual position of the principal throttle member and of said movable element, that this auxiliary throttle member is completely opened when the principal throttle member follows faithfully, in the direction of closing, the movements of said movable element and occupies a minimal open position when the principal throttle member is retarded, in the latter direction, with respect to the movements of this movable element.
  • the invention relates to fuel feed devices (by means of carburation or injection), for internal combustion engines comprising an intake pipe,a principal throttle member serving to control the air flow-rate in this pipe and adapted to be opened, against the action of a first elastic means, by an actuating member which is at the disposal of the operator and linked to the principal throttle member through a mechanical transmission.
  • the above-defined fuel feed device is essentially characterised by the fact that the abovementionedtransmission is coupled to a movable element subject to the action of the first elastic means and cooperating in such a way with the principal throttle member, that it drives the latter in the direction of opening by mechanical contact and in the direction of closing by a second elastic means less powerful than the first, and by the fact that the intakepipe comprises, downstream of the principal throttle member, an auxiliary throttle member actuated in such a way, by an electromagnet which is controlled by a switch sensitive to the mutual position of the principal throttle member and of said movable element, that this auxiliary throttle member, on one hand, is completely opened when the principal throttle member follows faithfully, in the direction of closing, the movements of said movable element and, on the other hand, occupies a minimal open position when the principal throttle member is retarded, in the said latter direction, with respect to the movements of this movable element.
  • the said movable element When the principal throttle member is formed by a butterfly valve fixed on a rotary axle, it is advantageous for the said movable element to be constituted by a first lever mounted loosely on the said axle and for the abovementioned switch to comprise a first contact carried by the first lever and a second contact carried by a second lever fast to said axle, the second elastic means being mounted between the two levers.
  • said switch can be mounted in series in the energising circuit of the electromagnet, which is arranged, when it is energised, to maintain the auxiliary throttle member open, against the action of a third elastic means.
  • the electromagnet energising circuit can comprise a second switch coupled or combined with the ignition switch of the engine so that it maintains the electromagnet inactive as long as the ignition switch of the engine is not closed.
  • auxiliary throttle member in order to facilitate the mounting of the auxiliary throttle member, it is preferable for the latter to be borne by an intermediate flange inserted between the usual part of the intake pipe carrying the principal throttle member and the rest of said pipe.
  • FIGS. 1 and 2 of this drawing show in diagrammatic elevation a carburation device constructed according to the invention in the positions of its elements which correspond, respectively, to a partial load on the engine and to slow-runningwith the principal throttle member stuck in open position.
  • the fuel feed device as a whole, it comprises, in an intake pipe 1 (where the direction of flow is shown diagrammatically by an arrow), a principal throttle member constituted by a butterfly valve 2 fixed on an axle 3.
  • the butterfly valve 2 is arranged so as to be opened (by turning in anti-clockwise direction in the Figures) against the action of a first elastic means or spring 4, by an actuating member or pedal 5, which is at the disposal of the operator and which is linked to the butterfly valve 2 through a mechanical transmission or link rod 6.
  • the device also comprises means (not shown) for mixing with the air which flows in the pipe 1 and whose flow-rate is controlled by the butterfly valve 2, fuel which is introduced by suction (conventional carburation) or under pressure (injection) and whose flow-rate is substantially proportional to that of the air.
  • the link rod 6 is coupled to a movable element or lever 7 which is mounted loosely on the axle 3 and to which is hooked the spring 4.
  • a second lever 8 is fixed on this axle.
  • the two levers 7 and 8 carry, respectively, electrical contacts 9 and 10 which together form a switch.
  • a second elastic means or spring 11, interposed between the levers 7 and 8, tend to maintain the contacts 9 and 10 against one another, this spring 11 being less powerful than the spring 4.
  • the contact 10 is connected to ground by a connection 12.
  • the contact 9, insulated electrically with respect to the lever 7, is connected by a connection 13 to the winding 14 of an electromagnet 15, which winding is also connected to a source of voltage 16 through a switch 17 which is closed at the time of normal use of the engine.
  • This switch 17 can be coupled or combined with the ignition switch of the engine, when the latter is of explosion type.
  • the electromagnet 15 also comprises a movable core 18 linked by a link rod 19 to a lever 20, which is fixed on the axle 21 of a throttle member or auxiliary butterfly valve 22 mounted in a part of the pipe 1 situated downstream of the principal butterfly valve 2.
  • This part of the pipe 1 can advantageously be constituted by an intermediate flange 23 attached to the pipe 1.
  • a third elastic means or spring 24, attached to the lever 20, tends to close the auxiliary butterfly valve 22, against the action of the electromagnet 15.
  • the device is advantageously completed by means adapted to limit the opening and closing movements of the butterfly vlaves 2 and 22.
  • a slow-running stop screw 25 can be arranged to cooperate with the lever 7.
  • a fuel feed device is thus obtained whose operation is as follows.
  • the electromagnet 15 is energised by the voltage source 16 and the movable core 18 holds the auxiliary butterfly valve 22 open, against the action of the spring 24.
  • the flow-rate of air admitted into the engine thus only depends on the position of the principal buterfly valve 2.
  • a device which automatically and instantaneously allows the speed of the engine to be reduced, when the principal throttle member remains locked in open position and when no effort is exerted on the accelerator pedal.
  • the principal throttle member and- /or the auxiliary throttle member may be constituted not by a butterfly valve but by an equivalent valve member, for example, by a slide valve adapted to slide transversely with respect to the intake pipe, in which case the movable element 7 could be arranged to slide parallel to the said slide valve.
  • Fuel feed device for internal combustion engines comprising in an intake pipe, a principal throttle member serving to control the flow-rate of air in this pipe and adapted to be opened, against the action of a first elastic means, by an actuating member which is at the disposal of the operator and linked to the principal throttle member through a mechanical transmission, a movable element to which said transmission is coupled and subject to the action of the first elastic means, said movable element comprising second elastic means less powerful than said first elastic means and cooperating in such a way, with the principal throttle member, that it drives the latter in the direction of opening by mechanical contact and in the direction of closing through said second elastic means, said intake pipe comprising, downstream of the principal throttle member, an auxiliary throttle member, an electromagnet arranged to actuate said auxiliary throttle member, and a switch sensitive to the mutual position of the principal throttle member and of said movable element arranged to control said electromagnet, so that this auxiliary throttle member is completely opened when the principal throttle member follows faithfully, in the direction of closing, the movements of said movable element
  • Fuel feed device whose principal throttle member is formed by a butterfly valve fixed on a rotary axle, wherein said movable element is constituted by a first lever mounted loosely on said axle and said switch comprises a first contact carried by this first lever and a second contact carried by a second lever fast to said axle, the second elastic means being mounted between the two levers.
  • Fuel feed device wherein said switch is mounted in series in the energising circuit of the electromagnet, which is arranged, when it is energised, to maintain the auxiliary throttle member open, against the action of a third elastic means.
  • Fuel feed device for explosion engines, wherein the energising circuit of the electromagnet comprises a second switch coupled or combined with the ignition switch of the engine so that it maintains the electromagnet inactive whilst the ignition switch of the engine is not closed.
  • Fuel feed device wherein the auxiliary throttle member is carried by an intermediate flange inserted between the usual part of the intake pipe carrying the principal throttle member and the rest of said pipe.
  • Fuel feed device wherein the auxiliary throttle member is carried by an intermediate flange inserted between the usual part of the intake pipe carrying the principal throttle member and the rest of said pipe.
  • Fuel feed device wherein the auxiliary throttle member is carried by an intermediate flange inserted between the usual part of the intake pipe carrying the principal throttle member and the rest of said pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
US00311560A 1971-12-28 1972-12-04 Fuel feed devices for internal combustion engines Expired - Lifetime US3802406A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7147140A FR2166527A5 (de) 1971-12-28 1971-12-28

Publications (1)

Publication Number Publication Date
US3802406A true US3802406A (en) 1974-04-09

Family

ID=9088266

Family Applications (1)

Application Number Title Priority Date Filing Date
US00311560A Expired - Lifetime US3802406A (en) 1971-12-28 1972-12-04 Fuel feed devices for internal combustion engines

Country Status (7)

Country Link
US (1) US3802406A (de)
JP (1) JPS4872526A (de)
AR (1) AR192266A1 (de)
DE (1) DE2253955A1 (de)
ES (1) ES408345A1 (de)
FR (1) FR2166527A5 (de)
IT (1) IT974272B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915138A (en) * 1973-09-22 1975-10-28 Bosch Gmbh Robert Fuel injection system
US4067306A (en) * 1976-06-24 1978-01-10 Acf Industries, Incorporated Solenoid operated device to control curb idle position of throttle valve
US4197820A (en) * 1976-09-20 1980-04-15 Roger Trudel Method and apparatus for supplying fuel to an internal combustion engine
EP0107265A2 (de) * 1982-08-30 1984-05-02 General Motors Corporation Drosselklappenstellvorrichtung
EP0155270B1 (de) * 1983-09-12 1988-08-24 EASTMAN KODAK COMPANY (a New Jersey corporation) Akustische lagefühlervorrichtung
US4962823A (en) * 1987-04-11 1990-10-16 Vdo Adolf Schindling Ag Load-adjusting device
US20080121296A1 (en) * 2006-10-31 2008-05-29 Vorenkamp Erich J Tuning slide valve for intake manifold

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3426791A1 (de) * 1984-07-20 1986-02-06 Voest-Alpine Friedmann GmbH, Linz Notabstelleinrichtung fuer brennkraftmaschinen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626919A (en) * 1970-11-10 1971-12-14 Charles W Macmillan Fail-safe throttle control
US3722492A (en) * 1969-12-26 1973-03-27 Honda Motor Co Ltd Apparatus for forcibly closing an engine throttle valve
US3731667A (en) * 1970-11-10 1973-05-08 C Macmillan Fail-safe throttle control
US3750780A (en) * 1972-01-21 1973-08-07 Gen Motors Corp Brake operated throttle override device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3722492A (en) * 1969-12-26 1973-03-27 Honda Motor Co Ltd Apparatus for forcibly closing an engine throttle valve
US3626919A (en) * 1970-11-10 1971-12-14 Charles W Macmillan Fail-safe throttle control
US3731667A (en) * 1970-11-10 1973-05-08 C Macmillan Fail-safe throttle control
US3750780A (en) * 1972-01-21 1973-08-07 Gen Motors Corp Brake operated throttle override device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915138A (en) * 1973-09-22 1975-10-28 Bosch Gmbh Robert Fuel injection system
US4067306A (en) * 1976-06-24 1978-01-10 Acf Industries, Incorporated Solenoid operated device to control curb idle position of throttle valve
US4197820A (en) * 1976-09-20 1980-04-15 Roger Trudel Method and apparatus for supplying fuel to an internal combustion engine
EP0107265A2 (de) * 1982-08-30 1984-05-02 General Motors Corporation Drosselklappenstellvorrichtung
US4462357A (en) * 1982-08-30 1984-07-31 General Motors Corporation Throttle system
EP0107265B1 (de) * 1982-08-30 1986-08-27 General Motors Corporation Drosselklappenstellvorrichtung
EP0155270B1 (de) * 1983-09-12 1988-08-24 EASTMAN KODAK COMPANY (a New Jersey corporation) Akustische lagefühlervorrichtung
US4962823A (en) * 1987-04-11 1990-10-16 Vdo Adolf Schindling Ag Load-adjusting device
US5052507A (en) * 1987-04-11 1991-10-01 Vdo Adolf Schindling Ag Load-adjusting device
US20080121296A1 (en) * 2006-10-31 2008-05-29 Vorenkamp Erich J Tuning slide valve for intake manifold
US7500493B2 (en) 2006-10-31 2009-03-10 Visteon Global Technologies, Inc. Tuning slide valve for intake manifold

Also Published As

Publication number Publication date
FR2166527A5 (de) 1973-08-17
ES408345A1 (es) 1975-11-01
DE2253955A1 (de) 1973-07-12
IT974272B (it) 1974-06-20
JPS4872526A (de) 1973-09-29
AR192266A1 (es) 1973-02-08

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