JPS57131847A - Controller for secondary-side throttle valve in twin-type carbureter - Google Patents

Controller for secondary-side throttle valve in twin-type carbureter

Info

Publication number
JPS57131847A
JPS57131847A JP1837981A JP1837981A JPS57131847A JP S57131847 A JPS57131847 A JP S57131847A JP 1837981 A JP1837981 A JP 1837981A JP 1837981 A JP1837981 A JP 1837981A JP S57131847 A JPS57131847 A JP S57131847A
Authority
JP
Japan
Prior art keywords
throttle valve
side throttle
acceleration
time
increase
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.)
Granted
Application number
JP1837981A
Other languages
Japanese (ja)
Other versions
JPS6319705B2 (en
Inventor
Yasuo Fujieda
Yoshiro Omori
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.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu Motor Co Ltd
Daihatsu Kogyo KK
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 Daihatsu Motor Co Ltd, Daihatsu Kogyo KK filed Critical Daihatsu Motor Co Ltd
Priority to JP1837981A priority Critical patent/JPS57131847A/en
Publication of JPS57131847A publication Critical patent/JPS57131847A/en
Publication of JPS6319705B2 publication Critical patent/JPS6319705B2/ja
Granted 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
    • F02M11/00—Multi-stage carburettors, Register-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve
    • F02M11/02—Multi-stage carburettors, Register-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve with throttling valve, e.g. of flap or butterfly type, in a later stage opening automatically
    • F02M11/04—Multi-stage carburettors, Register-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve with throttling valve, e.g. of flap or butterfly type, in a later stage opening automatically the later stage valves having damping means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Abstract

PURPOSE:To enable to prevent the increase in noise at the time of acceleration by jointly providing a check valve and an orifice between a diaphragm of a secondary-side throttle valve servo mechanism and a venturi negative-pressure port for the carbureter. CONSTITUTION:When the negative-pressure at the venturi negative-pressure port 10 is increased at the time of rapid opening of a primary-side throttle valve 5, this change is transmitted to a diaphragm chamber 9 of the servo mechanism 8 to open the secondary-side throttle valve 7. But since a delaying mechanism 15 having the check valve 13 and the orifice 14 jointly is provided in a passage 11, the secondary-side throttle valve 7 is opened with a delay. Accordingly, the acceleration of the engine is delayed by a corresponding amount and proceeds slowly, so that the increase of noise can be securely prevented without bringing about the so-called blow-up, i.e. an abrupt increase in engine revolution frequency, even at the time of acceleration with little load, such as on a flat road.
JP1837981A 1981-02-09 1981-02-09 Controller for secondary-side throttle valve in twin-type carbureter Granted JPS57131847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1837981A JPS57131847A (en) 1981-02-09 1981-02-09 Controller for secondary-side throttle valve in twin-type carbureter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1837981A JPS57131847A (en) 1981-02-09 1981-02-09 Controller for secondary-side throttle valve in twin-type carbureter

Publications (2)

Publication Number Publication Date
JPS57131847A true JPS57131847A (en) 1982-08-14
JPS6319705B2 JPS6319705B2 (en) 1988-04-25

Family

ID=11970074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1837981A Granted JPS57131847A (en) 1981-02-09 1981-02-09 Controller for secondary-side throttle valve in twin-type carbureter

Country Status (1)

Country Link
JP (1) JPS57131847A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61116158U (en) * 1985-01-07 1986-07-22

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6503237B2 (en) 2015-06-16 2019-04-17 株式会社バイオエコーネット Thermometer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5439726A (en) * 1977-09-05 1979-03-27 Hitachi Ltd Device for operatng vacuum secondary valve in dual carburetor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5439726A (en) * 1977-09-05 1979-03-27 Hitachi Ltd Device for operatng vacuum secondary valve in dual carburetor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61116158U (en) * 1985-01-07 1986-07-22

Also Published As

Publication number Publication date
JPS6319705B2 (en) 1988-04-25

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