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Low pressure gas vaporizer and method of operation

  • US 6,044,825 A
  • Filed: 02/21/1997
  • Issued: 04/04/2000
  • Est. Priority Date: 02/21/1996
  • Status: Expired due to Term
First Claim
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1. A fuel vaporizer for use with a fuel which tends to liquefy at low temperatures and to vaporize at high temperatures, said vaporizer comprising:

  • heat-exchange means adapted to transfer heat from a fluid engine coolant to said fuel; and

    an interface which forms part of said vaporizer and which separates said fuel from said coolant, said heat being transferred by conduction across said interface, said interface comprising a series of successively connected passages intermediate a starting point where said fuel enters said vaporizer and an end point where said fuel exits said vaporizer, each of said successively connected passages, commencing with a passage most proximate said starting point, being of lesser cross-sectional area than an immediately adjacent successively connected passageway progressing in a direction toward said endpoint, to thereby provide successively increasing cross-sectional area to accommodate said fuel as it changes state from mostly liquid at said starting point to mostly gaseous by said end point.

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