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. 29, 2011
Filed:
Nov. 04, 2002
Edward Jobson, Romelanda, SE;
Lennart Cider, Mölndal, SE;
Goran Wirmark, Göteborg, SE;
Volvo Technology Corporation, Gothenburg, SE;
Abstract
Method and device for reduction of a gas component in an exhaust gas flow of a combustion engine () that is adapted for operation by a lean air/fuel mixture. An exhaust pipe () is included for transport of the exhaust gas flow from the engine (). A separation unit () is also included that is arranged along the exhaust pipe (), which separation unit () has a wall structure () of a material which provides separation of the gas component from the exhaust gas flow by means of a selective passage of the gas component before other gas components in the exhaust gas flow. The method provides for a reduction and a separation unit that is intended to be utilized during such a reduction. An improved reduction of in particular NOcompounds from a so-called 'lean-burn' engine is also provided.