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Patent Searching and Data


Title:
ACCELERATING/DECELERATING DEVICE OF COMPOUND CARBURETOR
Document Type and Number:
Japanese Patent JP2001012301
Kind Code:
A
Abstract:

To increase the degree of freedom of design and to reduce a manufacturing cost by simplifying passages of a main air system of each carburetor constituting a compound carburetor.

A selection valve 40 comprises: a sealed valve chamber 42; an atmosphere releasing passage 43 opened to the valve chamber 42; a plurality of air intake passages 44 opened to the valve chamber 42; a control pressure passage 46 opened to the valve chamber 42 through a valve seat hole 47; and a control valve which closes the atmosphere releasing passage 43 when the valve seat hole 47 of the control pressure passage 46 is opened, and keeps the atmosphere releasing passage 43 open when the valve seat hole 47 of the control pressure passage 46 is closed. Each of the air intake passages 44 is communicated with a plurality of well chambers W of carburetors, the control pressure passage 46 is communicated to a pump chamber 20 of a pumping system 18, and a leak passage 50 extending from the control pressure passage 46 to the atmosphere is branched. The leak passages 50 have orifice portions 52, and one-way control valves 51 for allowing air flow from the leak passage 50 to the control pressure passage 46 and preventing air from flowing from the control pressure passage 46 to the leak passage 50.


Inventors:
FUJIWARA HIDEJI
Application Number:
JP18558399A
Publication Date:
January 16, 2001
Filing Date:
June 30, 1999
Export Citation:
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Assignee:
KEIHIN CORP
International Classes:
F02M13/02; F02M7/04; F02M7/06; F02M19/03; (IPC1-7): F02M7/06; F02M7/04; F02M13/02; F02M19/03
Attorney, Agent or Firm:
Hiroshi Ikeda