Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Patent
1982-09-29
1984-10-23
Moy, Magdalen Y. C.
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
123510, F02M 5900
Patent
active
044781970
ABSTRACT:
A fuel supply apparatus for a diesel engine includes a fuel tank and a fuel injection pump. The fuel injection pump has an inlet and an overflow outlet. A fuel feed line connects the fuel tank to the inlet of the fuel injection pump. A fuel feed pump is disposed in the fuel feed line to supply fuel from the fuel tank to the fuel injection pump. A fuel filter is disposed along the fuel feed line. A main fuel return line connects the overflow outlet of the fuel injection pump to the fuel tank. An auxiliary fuel return line connects the overflow outlet of the fuel injection pump to the fuel feed line at a position upstream of the fuel filter. A control valve is disposed in the auxiliary fuel return line to selectively block the latter. A device drives the control valve in response to the temperature of fuel in the fuel filter so that the control valve will block the auxiliary fuel return line only when the temperature of fuel in the fuel filter is higher than a preset value.
REFERENCES:
patent: 3739761 (1973-06-01), Niles
patent: 3768730 (1973-10-01), Campbell
patent: 4187813 (1980-02-01), Stumpp
patent: 4338816 (1982-07-01), Neff
patent: 4377149 (1983-03-01), Naylor et al.
patent: 4381748 (1983-05-01), Eckert
patent: 4385867 (1983-05-01), Straubel
Yamanouchi Katsuto
Yasuhara Seishi
Moy Magdalen Y. C.
Nissan Motor Company
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