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Patent Searching and Data


Title:
CARBURETOR
Document Type and Number:
Japanese Patent JP3967412
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To improve an output and a torque along a wide rotational speed region from an extremely low opening degree and extremely low rotation to excessive rotation by arranging a fuel blowout hole in a range in which a throttle effect by a lower end surface of a piston valve is generated.
SOLUTION: A carburetor is provided with a fuel passage 61 which comprises a fuel taking-out port 63 of a fuel chamber 32, a fuel pipe 65, a fuel leading-in passage 64, an intermediate chamber 66, a fuel feed passage 67, and a nozzle 68. A fuel blowout hole 62 is arranged in the range in which a throttle effect by a lower end surface of a piston valve 41 is generated. It is thus possible to make fuel flow out from a power jet 60 even under an operating condition having a small negative pressure value at the time of from extremely low rotation to low rotation, and from extremely low rotation to low rotation. As a result, a slowdown and stall of an engine at the time of low speed with its throttle wide open is eliminated, and also an output and a torque can be improved along a wide rotational speed range from the extremely low opening degree and extremely low rotation to excessive rotation.


Inventors:
Iwakiri, Megumi
Application Number:
JP1997000033308
Publication Date:
August 29, 2007
Filing Date:
January 31, 1997
Export Citation:
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Assignee:
KAWASAKI HEAVY IND LTD
International Classes:
F02M7/04; F02M9/06; F02M7/12; (IPC1-7): F02M7/04; F02M7/12; F02M9/06
Domestic Patent References:
JP3812307Y1
JP5474925A
JP3923006Y1
Attorney, Agent or Firm:
大音 康毅