GB1483175A - Automatic choke valve apparatus for an internal combustion engine - Google Patents

Automatic choke valve apparatus for an internal combustion engine

Info

Publication number
GB1483175A
GB1483175A GB23995/75A GB2399575A GB1483175A GB 1483175 A GB1483175 A GB 1483175A GB 23995/75 A GB23995/75 A GB 23995/75A GB 2399575 A GB2399575 A GB 2399575A GB 1483175 A GB1483175 A GB 1483175A
Authority
GB
United Kingdom
Prior art keywords
choke
motor
clockwise
throttle
link
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
GB23995/75A
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 GB23995/75A priority Critical patent/GB1483175A/en
Publication of GB1483175A publication Critical patent/GB1483175A/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)
  • Means For Warming Up And Starting Carburetors (AREA)

Abstract

1483175 Automatic chokes for IC engines HONDA GIKEN KOGYO KK 3 June 1975 23995/75 Heading F1H In order that a throttle 15 of an automatic choke assembly may be held open to a.greater extent at lower engine temperatures when starting, there is provided a fast idle cam 18 with an extra cam surface 18b brought into operation at low temperatures by a link 21, 22, 23 operated by a reversible pulse motor 5 which link can operate independently of a choke 2. The choke 2 is also operated by the reversible pulse motor 5 by means of a coupling which is resilient in respect of one direction of rotation of the pulse motor 5. Before starting the choke 2 is fully open and upon switching on the ignition circuit, a control means 4 rotates the motor anticlockwise so that a pawl 20 entrains link 21 to rotate the fast idle cam 18 to bring cam surface 18a beneath the throttle cam follower 17a. The torque from motor 5 is transmitted through a spring from a shaft 6 to a shaft 3 to close the choke 2. If the engine is very cold then the motor 5 rotates further anti-clockwise to bring the cam surface 18b beneath the follower 17a thus opening the throttle 15 further; the further rotation of shaft 6 being taken up by winding up the spring 7 since the choke 2 remains closed. Upon operating the starter, the motor 5 rotates clockwise so that pawl 9 engages pawl 8, thus rotating shaft 3 clockwise and opening the choke 2 to a part-open position which is maintained until the engine fires. Thereafter the choke 2 is opened automatically by clockwise rotation of the motor 5 at a rate controlled by the control means 4 until it is fully open when the engine is warm. To ensure proportionality of throttle and choke openings as the throttle is opened by anti-clockwise motion, a projection 25 on a cam follower lever 17 bears against the cam 18 to rotate it clockwise, moving a link 26, with a lost motion slot 27, upwardly, thus lifting a link 14 and opening the choke 2.
GB23995/75A 1975-06-03 1975-06-03 Automatic choke valve apparatus for an internal combustion engine Expired GB1483175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23995/75A GB1483175A (en) 1975-06-03 1975-06-03 Automatic choke valve apparatus for an internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23995/75A GB1483175A (en) 1975-06-03 1975-06-03 Automatic choke valve apparatus for an internal combustion engine

Publications (1)

Publication Number Publication Date
GB1483175A true GB1483175A (en) 1977-08-17

Family

ID=10204712

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23995/75A Expired GB1483175A (en) 1975-06-03 1975-06-03 Automatic choke valve apparatus for an internal combustion engine

Country Status (1)

Country Link
GB (1) GB1483175A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168434A (en) * 1984-12-15 1986-06-18 Stihl Andreas Automatic choke control for starting an i c engine
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168434A (en) * 1984-12-15 1986-06-18 Stihl Andreas Automatic choke control for starting an i c engine
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

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Legal Events

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