JPS5718448A - Variable venturi type carburetter - Google Patents

Variable venturi type carburetter

Info

Publication number
JPS5718448A
JPS5718448A JP9271080A JP9271080A JPS5718448A JP S5718448 A JPS5718448 A JP S5718448A JP 9271080 A JP9271080 A JP 9271080A JP 9271080 A JP9271080 A JP 9271080A JP S5718448 A JPS5718448 A JP S5718448A
Authority
JP
Japan
Prior art keywords
jet needle
piston
fixing
variable venturi
screw
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
JP9271080A
Other languages
Japanese (ja)
Inventor
Masami Nagano
Masumi Takada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9271080A priority Critical patent/JPS5718448A/en
Publication of JPS5718448A publication Critical patent/JPS5718448A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Abstract

PURPOSE: To reduce the time of the fixing work of a jet needle and ensure the fixing by improving the fixing structure of the jet needle to a piston constructing a variable Venturi part.
CONSTITUTION: In a variable Venturi type carburetter, when the opening degree of a throttle valve 2 is increased to increase the suction amount of air, the negative pressure near a piston 3 is increased and introduced into a negative pressure chamber 7 to raise the piston 3, and the jet needle 9 is drawn out from a nozzle 10 to increase the suction amount of fuel. At this stage, a coil spring 12 is closely fitted to the upper projected part of a jet needle 9 in its lower end and to the inside of a holding screw 14 in its upper end for constructing the jet needle 9, the spring 12, and the screw 14 into one body. For fixing the jet needle 9, this one body is put up and its screw 14 is screwed into a female screw provided in the concave part of the piston 3.
COPYRIGHT: (C)1982,JPO&Japio
JP9271080A 1980-07-09 1980-07-09 Variable venturi type carburetter Pending JPS5718448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9271080A JPS5718448A (en) 1980-07-09 1980-07-09 Variable venturi type carburetter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9271080A JPS5718448A (en) 1980-07-09 1980-07-09 Variable venturi type carburetter

Publications (1)

Publication Number Publication Date
JPS5718448A true JPS5718448A (en) 1982-01-30

Family

ID=14062015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9271080A Pending JPS5718448A (en) 1980-07-09 1980-07-09 Variable venturi type carburetter

Country Status (1)

Country Link
JP (1) JPS5718448A (en)

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