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. 22, 2015
Filed:
Dec. 21, 2011
David Bergeal, Ware, GB;
Andrew Francis Chiffey, Ware, GB;
Marie Feuerstein, Royston, GB;
Paul Richard Phillips, Royston, GB;
Wolfgang Strehlau, Sulzbach, DE;
Daniel Swallow, Sandy, GB;
James Wylie, Royston, GB;
David Bergeal, Ware, GB;
Andrew Francis Chiffey, Ware, GB;
Marie Feuerstein, Royston, GB;
Paul Richard Phillips, Royston, GB;
Wolfgang Strehlau, Sulzbach, DE;
Daniel Swallow, Sandy, GB;
James Wylie, Royston, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
An apparatus is disclosed. The apparatus comprises a lean-burn internal combustion engine, engine management means and an exhaust system for treating exhaust gas of the engine. The exhaust system comprises a first oxidation catalyst disposed on a first honeycomb monolith substrate. The first oxidation catalyst comprises platinum supported on a first metal oxide support comprising at least one reducible oxide, and is substantially free of alkali metals and alkaline earth metals. The engine management means is arranged, when in use, intermittently to modulate the lambda composition of the exhaust gas entering the first oxidation catalyst to a rich lambda composition.