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:
Sep. 16, 2003
Filed:
Dec. 19, 2001
Rob Otterspeer, Gothenburg, SE;
Jan Olof Carlsson, Torslanda, SE;
Volvo Car Corporation, Göteborg, SE;
Abstract
An internal combustion engine and a method for operating the multi-stroke combustion engine is disclosed. The engine is provided with individual variably controlled inlet and outlet valves in each cylinder. Operation of the engine involves controlling the inlet and outlet valves so that the opening and closing of the valves are adapted to a second stroke mode that is different from a first stroke mode in which the engine is presently running. Fuel injected into the cylinders is controlled so that it is injected prior to an expansion stroke. The transition from the first stroke mode to the second stroke mode occurs independent of the operating condition of the engine throughout the entire operating range of the engine.