GB1468612A - Thermostatic control device - Google Patents

Thermostatic control device

Info

Publication number
GB1468612A
GB1468612A GB2677574A GB2677574A GB1468612A GB 1468612 A GB1468612 A GB 1468612A GB 2677574 A GB2677574 A GB 2677574A GB 2677574 A GB2677574 A GB 2677574A GB 1468612 A GB1468612 A GB 1468612A
Authority
GB
United Kingdom
Prior art keywords
engine
spindle
vane
choke valve
coil
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
GB2677574A
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.)
Briggs and Stratton Corp
Original Assignee
Briggs and Stratton Corp
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 Briggs and Stratton Corp filed Critical Briggs and Stratton Corp
Publication of GB1468612A publication Critical patent/GB1468612A/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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • F02M1/08—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically
    • F02M1/10—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically dependent on engine temperature, e.g. having thermostat
    • 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
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0216—Arrangements; Control features; Details thereof of the air-vane type

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)
  • Temperature-Responsive Valves (AREA)

Abstract

1468612 Automatic choke valves BRIGGS & STRATTON CORP 17 June 1974 [19 Nov 1973] 26775/74 Heading F1H [Also in Division G1] In an I.C. engine, a choke valve 15, Fig. 2, is biased towards the closed position by a weighted lever 20 and is urged towards the open position as the engine speed increases by means of a vane 21 which is acted on by the stream of air from the engine cooling blower 6. The vane 21 is carried by a hub 24 which is freely journalled on a spindle 22, and operates the choke valve 15 via linkage 25, 26, 19. The spindle 22 is journalled in a bearing boss 23 and has a transverse slit 32, Figs. 2, 8, 9, engaged by the inner ends of a pair of bi-metallic coils 33, 34. The coils are oppositely wound, have their higher coefficients of expansion at opposite faces and have their free outer ends abutting oppositely-disposed shoulders 39, 39'. When the engine is cold, the coil 34 reacts against shoulder 39' and turns the spindle 22 into a position in which one end of an arcuate slot 46 in a collar 47 fixed to the spindle abuts a stop 48, and one end of an arcuate slot 44 in a further collar 43 fixed to the spindle then coacts with a projection 28 on the vane 21 to limit the extent to which the vane can move to open the choke valve 15. Meanwhile the coil 33 is out of contact with the shoulder 39 and therefore inoperative. When the engine is hot, the coil 34 is out of contact with the shoulder 39' and inoperative while the coil 33 now reacts against shoulder 39 to turn the spindle 22 to the position in which the opposite end of the arcuate slot 46 abuts the stop 48 and the opposite end of the arcuate slot 44 coacts with the projection 28 to hold the choke valve 15 slightly open when the engine is stationary and to allow the choke valve to be fully opened by the vane 21 when the engine begins to run.
GB2677574A 1973-11-19 1974-06-17 Thermostatic control device Expired GB1468612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US417402A US3863614A (en) 1973-11-19 1973-11-19 Thermostatic automatic choke control for small engines

Publications (1)

Publication Number Publication Date
GB1468612A true GB1468612A (en) 1977-03-30

Family

ID=23653879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2677574A Expired GB1468612A (en) 1973-11-19 1974-06-17 Thermostatic control device

Country Status (6)

Country Link
US (1) US3863614A (en)
JP (1) JPS5249529B2 (en)
CA (1) CA995530A (en)
DE (1) DE2451023C3 (en)
GB (1) GB1468612A (en)
IT (1) IT1009304B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031872A (en) * 1974-10-21 1977-06-28 Briggs & Stratton Corporation Thermostatic automatic choke control for small engines
JPS606025U (en) * 1983-06-25 1985-01-17 鹿島建設株式会社 Spacer for reinforcement
US6012420A (en) * 1997-12-30 2000-01-11 Briggs & Stratton Corporation Automatic air inlet control system for an engine
US6990969B2 (en) * 2003-07-30 2006-01-31 Briggs And Stratton Corporation Automatic choke for an engine
US7628387B1 (en) 2008-07-03 2009-12-08 Briggs And Stratton Corporation Engine air/fuel mixing apparatus
CN101624946B (en) * 2009-07-24 2012-01-11 隆鑫通用动力股份有限公司 Automatic control mechanism of carbureter air choke valve of general gasoline motor
US8495995B2 (en) 2010-06-23 2013-07-30 Briggs And Stratton Corporation Automatic choke for an engine
US10215130B2 (en) 2012-02-10 2019-02-26 Briggs & Stratton Corporation Choke override for an engine
US9429107B2 (en) 2013-02-22 2016-08-30 Briggs & Stratton Corporation Solenoid autochoke for an engine
US9945326B2 (en) 2015-05-07 2018-04-17 Briggs & Stratton Corporation Automatic choking mechanism for internal combustion engines
US9932936B2 (en) 2015-11-11 2018-04-03 Briggs & Stratton Corporation Carburetor choke removal mechanism for pressure washers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548334A (en) * 1947-03-17 1951-04-10 Briggs & Stratton Corp Automatic choke control for internal-combustion engines
US2939445A (en) * 1957-03-18 1960-06-07 Holley Carburetor Co Means for starting and operating internal combustion engines
US2956558A (en) * 1957-11-14 1960-10-18 Holley Carburetor Co Means for starting and operating internal combustion engines
US3248094A (en) * 1961-12-21 1966-04-26 Chrysler Corp Choke control for carburetor
US3248675A (en) * 1964-07-28 1966-04-26 Ford Motor Co Cold weather enrichment device for an internal combustion engine
US3789814A (en) * 1972-09-14 1974-02-05 Gen Motors Corp Ambient temperature regulated choke

Also Published As

Publication number Publication date
US3863614A (en) 1975-02-04
CA995530A (en) 1976-08-24
IT1009304B (en) 1976-12-10
DE2451023B2 (en) 1979-11-08
JPS5083637A (en) 1975-07-07
JPS5249529B2 (en) 1977-12-17
DE2451023C3 (en) 1980-07-24
DE2451023A1 (en) 1975-05-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee