Direct fuel injector assembly for a compressible natural gas...

Details Direct fuel injector assembly for a compressible natural gas... Direct fuel injector assembly for a compressible natural gas...

2003-10-20

2008-11-18

Ganey, Steven J (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Fluid pressure responsive discharge modifier* or flow...

Fuel injector or burner

C239S533300, C239S584000, C239S589000, C239S533700, C123S527000, C060S039465

Reexamination Certificate

active

07451942

ABSTRACT:
This invention relates to the injection of compressible gaseous fuel directly into the combustion chamber of a reciprocating piston-type internal combustion engine. In particular, the invention provides apparatus and methods for low-pressure, high-speed direct injection of compressed natural gas into a combustion chamber of an engine. Using the present invention, relatively low intake pressures of about 50 to about 150 PSIG yield high-speed (sonic and supersonic) gas flow through the diverging nozzle portion for injection into the combustion chamber. Preferably, the gas reaches supersonic velocity, approaching Mach 1.5 to 2.5.

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