Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Reexamination Certificate
2006-09-14
2010-02-02
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
C123S1980DA, C123S529000
Reexamination Certificate
active
07654250
ABSTRACT:
An engine-start is inhibited when a gas engine is tilted, and the engine is immediately stopped. A shutoff valve (21) is provided on a liquefied fuel passage (15) supplying a liquefied fuel to a vaporizing chamber (14) from a cylinder (16). The shutoff valve (21) is provided with a diaphragm (28) to which a pulsation pressure of a crank chamber (4) is applied, and opens the liquefied fuel passage (15) if a negative pressure is applied to the diaphragm (28). A tilting shutoff valve (39) is provided in a pressure passage (34) transmitting the pulsation pressure to the shutoff valve (21). The tilting shutoff valve (39) which has a ball valve releases the pulsation pressure of the crank chamber (4) to an atmospheric air. If the pulsation pressure is open to the atmospheric air, the diaphragm (28) can not operate. Accordingly, the liquefied fuel passage15is kept being shut off, and is rapidly shut off in response to the tilt during the operation.
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International Search Report of PCT/JP2006/318258, date of mailing Dec. 19, 2006.
Notification of Transmittal of Translation of the International Preliminary Report on Patentability (Form PCT/IB/338) of International Application No. PCT/JP2006/318258 mailed May 22, 2008 with Forms PCT/IPEA/409.
Fujinuma Masanori
Kojima Hiroaki
Utsugi Eiichi
Bacon Anthony L
Cronin Stephen K
Honda Motor Co. Ltd.
Westerman Hattori Daniels & Adrian LLP
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