Method and apparatus for the automatic refilling of a liquid hydrogen tank in a motor vehicle
First Claim
1. Method for the automatic refilling of a liquid hydrogen tank on a motor vehicle in which the tank is connnected to a liquid hydrogen supply line as well as a hydrogen gas return line, comprising:
- connecting the liquid hydrogen supply line in the vehicle to the hydrogen gas return line,passing liquid hydrogen through said lines in order to cool them,connecting the liquid hydrogen supply line to the liquid hydrogen tank only after said lines have been cooled, andcommencing to refill the liquid hydrogen tank.
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Accused Products
Abstract
In order to achieve efficient refueling with a method and an apparatus for the automatic refilling of a liquid hydrogen tank in a motor vehicle in which the tank is connected to a liquid hydrogen supply line as well as a hydrogen gas return line, it is proposed that prior to commencement of refilling the liquid hydrogen tank the liquid hydrogen supply line in the vehicle be connected to the hydrogen gas return line and that liquid hydrogen be passed through said lines in order to cool them whereby only after they have been cooled is the liquid hydrogen supply line connected to the liquid hydrogen tank. For this purpose, a bypass line connecting the liquid hydrogen supply line to the hydrogen gas return line is provided in the motor vehicle, and electrically operable closing valves are provided in the liquid hydrogen supply line downstream of where the bypass line branches as well as in the bypass line.
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Citations
9 Claims
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1. Method for the automatic refilling of a liquid hydrogen tank on a motor vehicle in which the tank is connnected to a liquid hydrogen supply line as well as a hydrogen gas return line, comprising:
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connecting the liquid hydrogen supply line in the vehicle to the hydrogen gas return line, passing liquid hydrogen through said lines in order to cool them, connecting the liquid hydrogen supply line to the liquid hydrogen tank only after said lines have been cooled, and commencing to refill the liquid hydrogen tank.
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2. Apparatus for automatically refilling a liquid hydrogen tank on a motor vehicle, comprising:
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a tank line having a liquid hydrogen supply hose and a hydrogen gas return hose, a tank neck on the motor vehicle, means for connecting said tank line to said tank neck, a hydrogen supply line located in the motor vehicle and connected to said tank neck, a hydrogen gas return line located in the motor vehicle and connected to said tank neck, a bypass line located in the motor vehicle which connects said liquid hydrogen supply line to said hydrogen gas return line, and electrically operable closing valves in said liquid hydrogen supply line downstream of said bypass line and in said bypass line. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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Specification