Fuel injection apparatus for internal combustion engine
AssigneesNippon Soken, Inc., Toyota Jidosha Kabushiki Kaisha
InventorsToshihiko Igashira, Yasuyuki Sakakibara, Yasuhiro Takeuchi, Seiko Abe, Hidetaka Nohira
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Abstract
A fuel injection apparatus including a fuel injector, a high pressure feed pump, and an auxiliary pump. The high pressure feed pump supplies highly pressurized fuel to the fuel injector while the engine is driven. The auxiliary pump supplies highly pressurized fuel at least on starting of the engine. The auxiliary pump is driven independent of the engine while the high pressure feed pump is driven by the engine.
Claims18
A fuel injection apparatus for an internal combustion engine comprising:
- a fuel injector;
- a high pressure feed pump for supplying high pressure fuel to said fuel injector during driving of the engine, said high pressure feed pump having an outlet port;
- an auxiliary pump for supplying injection pressure fuel to said fuel injector at least on starting the engine, said auxiliary pump having an outlet port;
- electric actuator means for controlling the supply of high pressure fuel to said fuel injector, said actuator means being operable independent of said high pressure feed pump and said auxiliary pump;
- and
- means for driving said high pressure feed pump;
- and
- means for controlling said auxiliary pump.
A fuel injection apparatus for an internal combustion engine comprising:
- a fuel injector;
- a high pressure feed pump connected to said fuel injector for supplying high pressure fuel to said fuel injector during driving of the engine;
- an auxiliary pump connected to said fuel injector for supplying high pressure fuel to said fuel injector at least on starting the engine, and for reducing pressure of fuel in said fuel injector on stopping the engine,
- means for driving said high pressure feed pump;
- and
- means for controlling said auxiliary pump.
Dependencies are inferred from the claim text.