Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1987-11-04
1988-10-04
Miller, Carl Stuart
Internal-combustion engines
Charge forming device
Fuel injection system
123381, F02M 3900
Patent
active
047749237
ABSTRACT:
A pressure regulating valve for regulating a pressure of fuel to be supplied to a fuel injection device including a diaphragm chamber having a connecting portion for inducing an intake manifold vacuum in the vicinity of a nozzle hole of the fuel injection device and having a temperature sensitive spring formed of a shape memory alloy and a valve member operable by the temperature sensitive spring, wherein when a fuel temperature is equal to or greater than a set temperature of the shape memory alloy, the valve member of the temperature sensitive valve closes a fuel passage in the fuel discharge pipe, and a high pressure valve adapted to open the fuel passage in the fuel discharge pipe when the temperature sensitive valve is closed and the pressure in the fuel chamber is equal to or greater than a second set pressure higher than the first set pressure, whereby when the fuel temperature is less than the set temperature, the pressure in the fuel chamber is adjusted to be equal to the first set pressure, while when the fuel temperature is equal to or greater than the set temperature, the pressure in the fuel chamber is adjusted to be equal to the second set pressure.
REFERENCES:
patent: 3204623 (1965-09-01), Isley
patent: 4222713 (1980-09-01), DeKeyser
patent: 4284039 (1981-08-01), Bellicardi
patent: 4286562 (1981-09-01), Stoltman
patent: 4404944 (1983-09-01), Yamazaki
patent: 4419976 (1983-12-01), Hosaka
patent: 4426978 (1984-01-01), Sasaki
patent: 4481926 (1984-11-01), Miri
patent: 4522177 (1985-06-01), Kawai
patent: 4635603 (1987-01-01), Hara
Aisan Kogyo Kabushiki Kaisha
Miller Carl Stuart
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