F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 35/02 (2006.01) F04B 9/107 (2006.01) F04B 9/117 (2006.01) F04B 31/00 (2006.01) F04B 39/06 (2006.01)
Patent
CA 2379766
A method is provided for compressing a gas in a single cycle and in a single cylinder to a pressure of at least 17.2 Mpa with a compression ratio of at least about five to one. The method further comprises dissipating heat from the cylinder during the compression stroke whereby the gas is discharged with a temperature significantly less than isentropic. The apparatus comprises a hollow cylinder and a reciprocable free-floating piston disposed therein. The piston divides the cylinder into: (a) a compression chamber within which a gas may be introduced, compressed, and discharged; and, (b) a drive chamber, into which a hydraulic fluid may be introduced and removed for actuating the piston. The apparatus further comprises a piston stroke length to piston diameter ratio of at least seven to one. For operating the apparatus with a compression ratio of at least five to one, an outlet pressure of at least 17.2 Mpa, and a gas discharge temperature significantly less than isentropic, the apparatus may further comprise a variable displacement hydraulic pump for controlling piston velocity, an electronic controller for maintaining an average piston velocity that is less than 0.5 feet per second, and a heat dissipator for dissipating heat from the cylinder.
Gavril Gabriel
Gram Anker
Hessami Shahin
Lockley Ian
Ursan Mihai
Oyen Wiggs Green & Mutala Llp
Westport Power Inc.
Westport Research Inc.
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