VAPORIZER SYSTEM AND CONTROL STRATEGY

During cold-start of an internal combustion engine, especially when ambient temperatures are low, a heat exchange medium can freeze in and around a heat exchanger that vaporizes a gaseous fuel. An improved method for vaporizing gaseous fuel stored in liquefied form for consumption by the internal co...

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Bibliographische Detailangaben
Hauptverfasser:	HUTCHISON, CHRISTOPHER, KRATSCHMAR, KENNETH W, EBBEHOJ, MICHAEL, IFTIKHAR, RAHEEL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING COMBUSTION ENGINES DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION HEAT EXCHANGE IN GENERAL HEATING HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINEPLANTS HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING NOT OTHERWISE PROVIDED FOR STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR STARTING OF COMBUSTION ENGINES SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF USE OF WASTE HEAT OF COMBUSTION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	During cold-start of an internal combustion engine, especially when ambient temperatures are low, a heat exchange medium can freeze in and around a heat exchanger that vaporizes a gaseous fuel. An improved method for vaporizing gaseous fuel stored in liquefied form for consumption by the internal combustion engine comprises counter flowing the gaseous fuel with the heat exchange medium through the heat exchanger during a first operating mode; and co-flowing flowing the gaseous fuel with the heat exchange medium through the heat exchanger during a second operating mode. To reduce the risk of freezing the heat exchange medium the engine can be cold-started in the second operating mode.