Electric fuel pump with fuel heater
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 30, 2001
Grant Date -
N/A
app pub date -
Mar 20, 1999
filing date -
Mar 20, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An assembly (10) for pumping fuel from a fuel source to an engine combusting the fuel comprises a housing (14), and a fuel pump (12) mounted in the housing. One end (18) of the housing defines a fuel inlet (20a, 20b) for the pump. A fuel filter (16) is mounted externally of the housing and fuel drawn into the fuel pump flows through the filter. A valve member (22) is fitted onto the end of the housing adjacent the fuel inlet for opening and closing the fuel inlet. The valve member is movable by the fuel filter during its installation to move the valve member to a position at which the fuel inlet is open. Removal of the filter causes the valve member to be moved to a position blocking the fuel inlet. A heater (40a, 40b) is carried on the valve member and is installed adjacent the fuel inlet. The heater heats fuel flowing into the fuel inlet to a predetermined temperature as the fuel is drawn into the fuel pump. A thermal switch (62) also carried on the valve member controls power to the heater to activate the heater when the fuel temperature is below the predetermined temperature.
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