Cryogenic fuel system for land vehicle power plant

Claim 1

The method of supplying cryogenic vapor in admixture with ambient air as fuel for operating the power plant of a land vehicle, said method comprising the steps of: providing a reservoir of combustible cryogenic fluid within a controlled pressurized container carried by said land vehicle; conveying said cryogenic fluid in substantially liquid state from said container towards the power plant of said vehicle; vaporizing said cryogenic fluid adjacent the power plant of said vehicle by placing it in heat exchange relation with ambient air, further vaporizing any residual cryogenic liquid in said cryogenic fluid adjacent said power plant while simultaneously raising the temperature of the cryogenic vapors previously generated by said first vaporization step by placing said cryogenic fluid in heat exchange relation with a fluid other than said ambient air; and introducing the resultant heated cryogenic fluid in substantially vapor state into the power plant of said land vehicle in admixture and regulated proportion with said ambient air in heat exchange relationship with the cryogenic fluid during said initial vaporization step.

Claim 2

The method of supplying cryogenic vapor in admixture with ambient air as fuel for operating the power plant of a land vehicle, said method comprising the steps of: providing a reservoir of combustible cryogenic fluid within a controlled pressurized container carried by said land vehicle; conveying said cryogenic fluid in substantially liquid state from said container towards the power plant of said vehicle; vaporizing said cryogenic fluid adjacent the power plant of said vehicle by placing it in heat exchange relation with ambient air, further vaporizing any residual cryogenic liquid in said cryogenic fluid adjacent said power plant while simultaneously raising the temperature of the cryogenic vapors previously generated by said first vaporization step by placing said cryogenic fluid in heat exchange relation with a fluid other than said ambient air; and introducing the resultant heated cryogenic fluid in substantially vapor state into the power plant of said land vehicle in admixture and regulated proportion with said ambient air in heat exchange relationship with the cryogenic fluid during said initial vaporization step.