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:
Dec. 06, 2011
Filed:
Mar. 01, 2007
Erwin Bauer, Lappersdorf, DE;
Dietmar Ellmer, Regensburg, DE;
Erwin Bauer, Lappersdorf, DE;
Dietmar Ellmer, Regensburg, DE;
Continental Automotive GmbH, Hannover, DE;
Abstract
Systems and methods for determining the gas composition of a gas mixture in a fuel tank of a motor vehicle filled with a compressed natural gas (CNG) mixture are provided. A pressure sensor and a temperature sensor are used to measure a gas pressure and a gas temperature in the fuel tank A processor may execute an algorithm to determine, based at least on the measured gas temperature and the measured gas pressure in the fuel tank, a current vapor pressure of each of at least one component of the CNG mixture in the fuel tank. If the measured gas pressure in the fuel tank falls below a threshold, a corresponding current composition of the CNG mixture in the fuel tank may be determined.