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:
Jan. 04, 2011
Filed:
Jun. 18, 2004
Eive Tord Ronny Allansson, Kungsbacka, SE;
Anders Klas Andreasson, V. Frolunda, SE;
Claus Friedrich Goersmann, Cambridge, GB;
Mats Lavenius, Partille, SE;
Martyn Vincent Twigg, Cambridge, GB;
Andrew Peter Walker, Chester Springs, PA (US);
Eive Tord Ronny Allansson, Kungsbacka, SE;
Anders Klas Andreasson, V. Frolunda, SE;
Claus Friedrich Goersmann, Cambridge, GB;
Mats Lavenius, Partille, SE;
Martyn Vincent Twigg, Cambridge, GB;
Andrew Peter Walker, Chester Springs, PA (US);
Johnson Matthey Public Limited Company, London, GB;
Abstract
An exhaust system for a vehicular lean-burn internal combustion engine includes a NOreduction catalyst, a source reductant, means () for contacting the catalyst with the reductant, means for sensing the temperature of the exhaust gas and/or the catalyst bed and means, when in use, for controlling reductant addition. The reductant addition control means supplies an amount of reductant to the catalyst at a rate corresponding to a measured temperature value of the exhaust gas and/or catalyst bed, which temperature value has been pre-determined to correlate, in use, with an amount of NOin the exhaust gas.