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GB1488452A - Automatic choke valve apparatus for an internal combustion engine - Google Patents

Automatic choke valve apparatus for an internal combustion engine

Info

Publication number
GB1488452A
GB1488452A GB23996/75A GB2399675A GB1488452A GB 1488452 A GB1488452 A GB 1488452A GB 23996/75 A GB23996/75 A GB 23996/75A GB 2399675 A GB2399675 A GB 2399675A GB 1488452 A GB1488452 A GB 1488452A
Authority
GB
United Kingdom
Prior art keywords
choke valve
circuit
pulse
engine
pulse motor
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
Application number
GB23996/75A
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to GB23996/75A priority Critical patent/GB1488452A/en
Priority to DE2525595A priority patent/DE2525595C3/en
Publication of GB1488452A publication Critical patent/GB1488452A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/067—Introducing corrections for particular operating conditions for engine starting or warming up for starting with control of the choke
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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)
  • Means For Warming Up And Starting Carburetors (AREA)

Abstract

1488452 Automatic choke for IC engine; regulating IC engines HONDA GIKEN KOGYO K K 3 June 1975 23996/75 Headings F1B and F1H A choke valve (2) is driven by a reversible pulse motor (5) via a linkage which includes a pair of co-operating pawls (8, 9) and a helical spring (7) between the pulse motor output shaft (6) and the choke valve operating shaft (3), such that the pawls (8, 9) ensure positive rotation of the choke valve (2) in one direction of rotation of the pulse motor (5) and a resilient connection via the helical spring (7) in the reverse direction of rotation of the pulse motor (5). The sequence of operation of the choke valve (5) at engine starting is controlled by a control circuit (4) according to Fig. 2 which involves one reverse movement (A to B) of the pulse motor followed by three controlled forward movements (C to D, E to F and F to G). The invention resides in controlling the rate of movement E to F, which results as the engine first fires, in accordance with engine temperature. When the ignition is switched on, the choke valve (2) is moved from an open position A to a closed position B and a signal is sent to terminal 15 of an AND circuit 19. The starter is operated at D and, as the engine fires, a signal at 21 is supplied directly to the AND circuit 19 at terminal 16 and indirectly through a parallel circuit to terminal 17. The parallel circuit includes a differential circuit which forms a pulse upon receiving the signal from 21, which pulse triggers a timer 24, which transmits a further pulse with a length proportional to engine temperature, as sensed by a thermal responsive resistor 23, to terminal 17. The output of AND circuit 19 is a pulse proportional to engine temperature which is applied to a frequency adjuster circuit 25, which adjusts the frequency of pulses sent to the pulse motor (5) by the control circuit (4) thus adjusting the speed of choke valve opening to point F. After regular firing at point F the choke valve opens gradually to a maximum at G.
GB23996/75A 1975-06-03 1975-06-03 Automatic choke valve apparatus for an internal combustion engine Expired GB1488452A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB23996/75A GB1488452A (en) 1975-06-03 1975-06-03 Automatic choke valve apparatus for an internal combustion engine
DE2525595A DE2525595C3 (en) 1975-06-03 1975-06-09 Control device on a carburetor for internal combustion engines for starting and cold start operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23996/75A GB1488452A (en) 1975-06-03 1975-06-03 Automatic choke valve apparatus for an internal combustion engine

Publications (1)

Publication Number Publication Date
GB1488452A true GB1488452A (en) 1977-10-12

Family

ID=10204728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23996/75A Expired GB1488452A (en) 1975-06-03 1975-06-03 Automatic choke valve apparatus for an internal combustion engine

Country Status (2)

Country Link
DE (1) DE2525595C3 (en)
GB (1) GB1488452A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9464588B2 (en) 2013-08-15 2016-10-11 Kohler Co. Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine
US10054081B2 (en) 2014-10-17 2018-08-21 Kohler Co. Automatic starting system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2927881C2 (en) * 1979-07-11 1984-06-28 Bosch und Pierburg System oHG, 4040 Neuss Method and device for transitional enrichment in mixture formers
FR2537212A1 (en) * 1982-12-07 1984-06-08 Renault AUTOMATIC STARTER DEVICE FOR CARBURETORS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9464588B2 (en) 2013-08-15 2016-10-11 Kohler Co. Systems and methods for electronically controlling fuel-to-air ratio for an internal combustion engine
US10240543B2 (en) 2013-08-15 2019-03-26 Kohler Co. Integrated ignition and electronic auto-choke module for an internal combustion engine
US10794313B2 (en) 2013-08-15 2020-10-06 Kohler Co. Integrated ignition and electronic auto-choke module for an internal combustion engine
US10054081B2 (en) 2014-10-17 2018-08-21 Kohler Co. Automatic starting system

Also Published As

Publication number Publication date
DE2525595A1 (en) 1976-12-16
DE2525595B2 (en) 1979-07-19
DE2525595C3 (en) 1980-03-13

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee