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:
Nov. 09, 2004
Filed:
Aug. 08, 2003
Maria Tafazoli, Sävedalen, SE;
Hans Bernler, Göteborg, SE;
Bengt Jalnäs, Torslanda, SE;
Volvo Lastvagnar AB, Göteborg, SE;
Abstract
Method and apparatus for controlling the ration of the amount of fuel and the amount of air in a natural gas fueled internal-combustion engine intended to work in a specified engine-specific load-rotation speed diagram. The apparatus includes a throttle for controlling the amount of air supplied to the combustion chamber in the internal-combustion engine, injection devices for controlling the amount of natural gas supplied to the combustion chamber and control devices for controlling the throttle and the injection devices, whereby the control devices are arranged to control the ratio of the amount of fuel and the amount of air dependent on the current operating point in the internal-combustion engine's load-rotation speed diagram.