Fuel feed system for an internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 21, 1980
Grant Date -
N/A
app pub date -
Mar 23, 1979
filing date -
Apr 17, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel feed system for an internal combustion engine, of the type in which a fuel line from a fuel tank contains a fuel feed pump for supplying fuel under pressure to at least one fuel injection pump operating to inject fuel into the internal combustion engine, the injection pump having an outlet for excess fuel connected to a return line leading back to the fuel tank. In this return line there are two branches, one of them containing a heater for heating fuel flowing in that branch of the return line; a solenoid valve selectively energized in dependence on the fuel temperature in the tank causes the fuel to flow in the heater-containing branch of the return line when the fuel temperature in the tank is below a selected minimum. Filters in the fuel feed line are provided with heaters energized in dependence on the fuel temperature in the fuel feed line immediately downstream of the filter. A further branch in the return line is provided with a fuel refrigerator for cooling fluid on its way to the tank when the fuel temperature in the tank exceeds a selected maximum value.
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