Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1978-12-22
1981-03-24
Myhre, Charles J.
Internal-combustion engines
Charge forming device
Fuel injection system
123452, F02M 5932, F02M 5942
Patent
active
042573750
ABSTRACT:
Problems associated with warm engine starting of spark-ignition internal combustion engines with continuous injection into the intake manifold and fuel injection systems of the type utilizing a measuring element and a deliberately operable power control element connected in series, the measuring element being moved as a function of the air volume through-put so as to displace a fuel valve disposed in a fuel supply line for metering a volume of fuel which is proportional to the air volume and which has a warmup control connected by a control pressure line with the fuel valve and a zero-pressure fuel return line with a fuel tank for enriching the fuel-air mixture during the warmup of the internal combustion engine are avoided according to the present invention by an improvement comprising a bypass line interconnecting the control pressure line of the fuel pressure line in bypassing relationship with respect to the warmup control. A valve is disposed in the bypass line and is controlled so as to open the bypass line when the engine is started in a warmed up condition. According to a preferred embodiment, the operating parameter in response to which the valve is controlled is the temperature of the internal combustion engine.
REFERENCES:
patent: 3730155 (1973-05-01), Knapp
patent: 3792693 (1974-02-01), Luchaco
patent: 3835828 (1974-09-01), Knapp
patent: 3974809 (1976-08-01), Stumpp
patent: 3993034 (1976-11-01), Passera
patent: 4132211 (1979-01-01), Wilfert
patent: 4150654 (1979-04-01), Heitzman
patent: 4193384 (1980-03-01), Steiner
Dr. -Ing. H.c.F. Porsch Aktiengesellschaft
Miller Carl Stuart
Myhre Charles J.
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