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Patent Searching and Data


Title:
CARBURETOR OF TWO-CYCLE ENGINE
Document Type and Number:
Japanese Patent JP2009209691
Kind Code:
A
Abstract:

To provide a carburetor inexpensively reduced in manual operations, and having superior startability and durability.

In this carburetor 12 of a two-cycle engine, a choke valve is installed on the upstream side of an air passage, a fuel is sucked from a fuel tank 16 by a fuel diaphragm valve 23 operated due to the pulsation of the intake air and supplied to a fuel nozzle 22 in the air passage, and the air-fuel mixing ratio is controlled by a throttle valve. The carburetor comprises an air chamber 15a and an air pipe 36 for taking the pulsating pressure in a crankcase into the air chamber 15a and a fuel tank pipe 37 led to a carburetor side passage 35 to the fuel sump chamber 18 side of the carburetor 12 and the fuel tank 16. The carburetor further comprises a fuel pump 15 having a check valve 15b for stopping the return side of the carburetor 12 in the carburetor side passage 35 and a check valve 15c for stopping the return side from the fuel tank 16 in the fuel tank pipe 37 and a means for operating the sub fuel pump 15 only when an engine is started.


Inventors:
Uenoyama, Kazuyuki
Application Number:
JP2008000050598
Publication Date:
September 17, 2009
Filing Date:
February 29, 2008
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F02M17/04; F02M1/04; F02M1/16; F02M19/06
Attorney, Agent or Firm:
森 隆一郎
志賀 正武
高橋 詔男
佐藤 秀昭
山崎 哲男