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:
May. 06, 2003
Filed:
Jan. 29, 2002
Guenther Bubeck, Schorndorf, DE;
Normann Freisinger, Lorch, DE;
Roland Kemmler, Stuttgart, DE;
Martin Matt, Bruchsal-Untergrombach, DE;
Jens Quinten, Nalbach, DE;
Peter Struebel, Fellbach, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
In an exhaust system for an internal combustion engine having two groups of cylinders with a separate exhaust line for each cylinder group, each including an upstream catalytic converter and a downstream catalytic converter and a control valve, a first transverse connection extending between the exhaust lines upstream of the upstream catalytic converters and a second transverse connection extending between the exhaust lines between the upstream and downstream catalytic converters, the valves are so arranged and controlled that, during warm-up, the exhaust gases from both cylinder groups flow through the upstream catalytic converter of one, and the downstream catalytic converter of the other exhaust line for rapid heat up of one of the catalytic converters in each of the exhaust lines.