Fuel supply device

Details Fuel supply device Fuel supply device

2008-03-18

2008-03-18

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S457000, C123S458000, C123S511000

Reexamination Certificate

active

07343901

ABSTRACT:
A fuel filter is located downstream of a feed pump to filter fuel discharged from the feed pump. An orifice is located between the fuel filter and a suction quantity control valve to restrict a flow rate of the fuel passing through the fuel filter. A positive pressure of the feed pump is applied to the fuel filter, and a passing pressure at the fuel filter increases. Even if viscosity of the fuel increases and the fuel becomes wax-like at low temperature, clogging of the fuel filter or an insufficient flow rate can be inhibited. The orifice restricts the flow rate of the fuel passing through the fuel filter. Accordingly, an increase in size of the fuel filter can be prevented even if the fuel filter is located downstream of the feed pump.

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Chinese Office Action mailed Aug. 17, 2007 in Chinese Application No. 200610006928.6 with English translation.

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