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US 5,080,079 AGranted
Fuel injection apparatus having fuel pressurizing pump
AssigneeAisin Seiki Kabushiki Kaisha
InventorsYutaka Yoshida, Eiji Sakagami
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Abstract
A fuel injection apparatus has a piezoelectric element for generating a high-pressurized air-fuel gas mixture. The piezoelectric element is arranged at a side of a pumping chamber, and a diaphragm is arranged between the piezoelectric element and the pumping chamber. The piezoelectric element produces a pumping function in accordance with a current signal.
Claims12
A fuel injection apparatus for supplying a fuel mixture to a combustion chamber of an engine, comprising:
- a main body having a fuel path;
- an injector valve connected to said main body and in communication with said fuel path;
- a mixing chamber connected to said fuel path for mixing the fuel with air to form a fuel mixture;
- injector valve drive means connected to said main body to selectively open said injector valve so as to supply the fuel mixture to the combustion chamber at a controlled rate;
- and
- a fuel pressurizing pump in communication with said fuel path, whereby the fuel is rapidly gasified and pressurized, said pump including a piezoelectric element.
3 more elements
Dependencies are inferred from the claim text.