| abstract |
The present invention stores pressurized liquefied natural gas (PLNG) fuel at a pressure of about 1035 kPa (150 psia) to about 7590 kPa (1100 psia) and at a temperature of about -123 ° C (-190 ° F) to about -62 ° C (-80 ° F). A fuel storage and delivery system is provided for delivering vaporized PLNG fuel for combustion in engine 24. The fuel storage and delivery system comprises fuel storage vessels (10) made from very high strength low alloy steels containing less than 9 weight percent nickel, having a tensile strength of at least 830 MPa (120 ksi) and a DBTT of about -73 ° C (-100 ° F) or less. Has Although not wishing to be limited thereby, the invention is particularly useful for automobiles, buses, trucks and other vehicles equipped with an engine 24 designed to operate through the combustion of natural gas. |