The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 1996
Filed:
Jul. 26, 1993
Raymond R Tison, Mentor, OH (US);
Paul F Swenson, Shaker Heights, OH (US);
Consolidated Natural Gas Service Company, Inc., Pittsburgh, PA (US);
Abstract
A method and apparatus for fast filling a vehicle fuel tank with high pressure natural gas comprising the steps of coupling a fill line to the vehicle tank, introducing high pressure natural gas into the line and the tank, measuring the pressure in the line in a manner that yields a measurement of the initial pressure of the gas in the tank, assigning an initial temperature for the gas in the tank, predetermining the final desired pressure and temperature of the gas in the tank at the end of the fill, calculating the mass or temperature of the gas to be added to the tank so that the adiabatic compression and potential rise in temperature of gas in the tank is automatically compensated for and the tank is substantially filled with a mass that results in a condition, when the tank and the gas contained therein substantially reach ambient temperature, wherein the pressure in the tank is substantially equal to the nominal rated pressure of the tank and, thereafter filling the tank with the calculated gas mass or temperature.