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Patent Searching and Data


Title:
CARBURETOR WITH MANUAL CHOKE MECHANISM
Document Type and Number:
Japanese Patent JP2005155525
Kind Code:
A
Abstract:

To provide a carburetor with a manual choke mechanism capable of obtaining excellent start and stable drive successive thereto by fixing a choke valve at a predetermined position even when a hand is off in the manual operation.

The fixing force and the valve-opening force are applied to a choke valve stem 6. A pin 10 of a lever 9 of a choke valve presses an arm piece 14 of a throttle valve lever 13 to slightly open the throttle valve 7 when the choke valve 5 is fully opened. When engine complete explosion is performed in this state, the choke valve 5 is half-opened, and the throttle valve 7 is returned to the idling position by a valve-closing spring 17. When the throttle valve 7 is opened, a cam 15 of the throttle valve lever 13 presses the pin 10 to open the choke valve 5. The valve-opening force exceeds the fixing force when the valve is almost fully opened, and the choke valve 5 is fully opened. The pin 10 is separated from the cam 15, and the throttle valve 7 is opened/closed without interference with the choke valve 5. The choke valve 5 is fixed even when a hand is off by the fixing force exceeding the valve-opening force from the fully-closed condition to the almost fully-opened condition.


Inventors:
Koizumi, Kimio
Application Number:
JP2003000397006
Publication Date:
June 16, 2005
Filing Date:
November 27, 2003
Export Citation:
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Assignee:
ZAMA JAPAN CO LTD
International Classes:
F02M1/02; F02D9/10; F02M3/09; F02M3/12; F02M7/12; (IPC1-7): F02M1/02
Attorney, Agent or Firm:
橋本 克彦
橋本 京子
松下 浩二郎