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:
Oct. 08, 2002
Filed:
Apr. 02, 2001
Eric Olofsson, Ronninge, SE;
SAAB Automobile AB, , SE;
Abstract
A turbo-fed internal combustion engine has a first and a second exhaust-gas valve per cylinder, these exhaust-gas valves each being connected to their respective exhaust manifold. One exhaust manifold conducts exhaust gases to an exhaust-gas turbine and the other exhaust manifold conducts subsequent exhaust gases past this exhaust-gas turbine which drives a compressor for charge air. The intake valve of the cylinder is arranged so as, as the engine speed increases, to close either earlier, before the piston reaches its bottom dead center, or later, after the piston has passed its bottom dead center. In this way, the temperature increase resulting from compression in the cylinder is reduced. Cooled air from the compressor can be taken in so as to obtain an adequate degree of filling in the cylinder, with a lower final temperature.