Injection Apparatus for Cryogenic Engines

Injection apparatus is provided for injecting a drive fluid, such as liquefied nitrogen, into the working chamber ( 50 ) of a cryogenic engine. Liquefied nitrogen is admitted to a housing ( 36 ) of the apparatus under the control of an inlet valve ( 42 ) and expelled from the housing ( 36 ) under th...

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Bibliographische Detailangaben
1. Verfasser:	DEARMAN PETER
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Injection apparatus is provided for injecting a drive fluid, such as liquefied nitrogen, into the working chamber ( 50 ) of a cryogenic engine. Liquefied nitrogen is admitted to a housing ( 36 ) of the apparatus under the control of an inlet valve ( 42 ) and expelled from the housing ( 36 ) under the control of an outlet valve ( 48 ). In the housing ( 36 ), heat is transferred to the liquid nitrogen to cause a small volume of the liquefied nitrogen to boil and thereby inject the drive fluid into the cryogenic engine under pressure. In each of two embodiments (FIGS. 1 to 7 ) the liquid nitrogen is transferred to a warmed region of the housing by a moveable injection member ( 4, 20 ) and in two further embodiments the housing is formed as a heat exchanger through which the nitrogen passes.