Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1980-06-30
1982-09-21
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Fuel injection system
123454, 123489, 123491, 261 50A, F02D 302, F02D 500
Patent
active
043501311
ABSTRACT:
A fuel injection device comprising an injection unit having a back pressure chamber and a fuel chamber which are separated by a diaphragm. The fuel chamber has on its lower end a fuel nozzle. A needle, cooperating with the fuel nozzle, is connected to the diaphragm. A flow control valve is arranged in the fuel feed passage connecting the fuel chamber to the fuel feed pump. The amount of the fuel injected from the fuel nozzle is controlled by the flow control valve so as to be proportional to the amount of the air sucked in. One end of the back pressure chamber is connected, to the pressure reducing chamber of the pressure reducing valve via a restricted opening and, the other end is connected to the fuel tank via the fuel return passage. An electromagnetic valve is arranged in the fuel return passage. An oxygen concentration detector is arranged in the exhaust passage of an engine. The electromagnetic valve is controlled by the oxygen concentration detector for equalizing the air-fuel ratio of the mixture, fed into the cylinders of an engine, to the stoichiometric air-fuel ratio.
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patent: 4186708 (1980-02-01), Bowler
patent: 4230083 (1980-10-01), Wessel et al.
Kiuchi Hideo
Kobayashi Nobuyuki
Cox Ronald B.
Dolinar Andrew M.
Toyota Jidosha Kogyo Kabushiki Kaisha
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