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JPS56121848A - Start-up carburetor control system - Google Patents

Start-up carburetor control system

Info

Publication number
JPS56121848A
JPS56121848A JP2568280A JP2568280A JPS56121848A JP S56121848 A JPS56121848 A JP S56121848A JP 2568280 A JP2568280 A JP 2568280A JP 2568280 A JP2568280 A JP 2568280A JP S56121848 A JPS56121848 A JP S56121848A
Authority
JP
Japan
Prior art keywords
negative pressure
valve
passage
temperature sensing
suction
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.)
Pending
Application number
JP2568280A
Other languages
Japanese (ja)
Inventor
Akira Ikeda
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha 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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP2568280A priority Critical patent/JPS56121848A/en
Publication of JPS56121848A publication Critical patent/JPS56121848A/en
Pending legal-status Critical Current

Links

Landscapes

  • Means For Warming Up And Starting Carburetors (AREA)

Abstract

PURPOSE: To improve the start-up performance of the engine at low temperature by constituting an air supply passage to a carburetor with main and auxiliary air passage and providing a control valve on the auxiliary passage which opens after predetermined period after suction negative pressure is generated.
CONSTITUTION: A start-up carburetor 12 contains in its 14 a plunger 16 passed upward by a spring 18, and said plunger 16 is pressed down ward when the suction negative pressure in a suction passage 28 is introduced into a negative pressure chamber 20 through a start-up negative pressure introducition valve 36 and the first temperature sensing open/close valve 40. The second temperature sensing open/close valve 48 is provided adjacent to the first temperature sensing open/close valve 40 to open and close a by-pass passage between the negative pressure chamber 20 and the suction passage 28. In addition to a main air passage 22 which opens to a body 14, an auxiliary air passage 52 having the third temperature sensing valve 62 is provided and an auxiliary air passage control valve 60 is installed therein, said valve 60 being controlled by the negative pressure introduced via a negative pressure passages 34 and 50 and a delaying valve 40.
COPYRIGHT: (C)1981,JPO&Japio
JP2568280A 1980-02-29 1980-02-29 Start-up carburetor control system Pending JPS56121848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2568280A JPS56121848A (en) 1980-02-29 1980-02-29 Start-up carburetor control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2568280A JPS56121848A (en) 1980-02-29 1980-02-29 Start-up carburetor control system

Publications (1)

Publication Number Publication Date
JPS56121848A true JPS56121848A (en) 1981-09-24

Family

ID=12172550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2568280A Pending JPS56121848A (en) 1980-02-29 1980-02-29 Start-up carburetor control system

Country Status (1)

Country Link
JP (1) JPS56121848A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200151U (en) * 1986-06-12 1987-12-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62200151U (en) * 1986-06-12 1987-12-19

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