Patent ID: 8459241
Filing Date: 2013-06-11
Classification: F02B,F02M,Y02T

Abstract:
1. A liquefied natural gas system for a natural gas vehicle engine, the system comprising: a) at least one insulated storage tank capable of receiving liquefied natural gas; b) at least one heat exchanger operatively coupled to the at least one storage tank; c) a piping system coupling the at least one insulated storage tank and the at least one heat exchanger, and including dual flow paths through the at least one heat exchanger, a return path from the dual flow paths downstream of the at least one heat exchanger to the storage tank, and an engine feed path from the dual flow paths configured to be coupled to the engine; and d) a valve and control system coupled to the dual flow paths capable of alternating flow through the dual flow paths so that one flow path supplies the engine through the engine feed path while the other flow path pressurizes the storage tank through the return path.