Wesco type fuel pump
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United States of America Patent
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Mar 3, 2009
Grant Date -
Dec 9, 2004
app pub date -
Nov 20, 2002
filing date -
Nov 20, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To make a Wesco type fuel pump to supply pressure-increased fuel toward a fuel injection valve with no time delay at a time of restarting an engine, an impeller (8) which is rotated by an electric motor (M) arranged within a motor chamber (9) is arranged within a pump chamber (7), a fuel inflow passage (6) which communicates with the outside and a discharge hole (5) which communicates with the motor chamber (9) are open to the pump chamber (7), and the discharge hole (5) is provided with a fuel holding function which inhibits air from flowing into the motor chamber (9) from the pump chamber (7) at a time when the engine stops.
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