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:
Feb. 03, 2015
Filed:
Jan. 13, 2011
Bart Hubert Schreurs, Arlon, BE;
Bart Hubert Schreurs, Arlon, BE;
Delphi International Operations Luxembourg, S.A.R.L., Luxembourg, LU;
Abstract
A compression-ignition engine () comprises an exhaust system () with an exhaust gas after-treatment assembly, the after-treatment assembly comprising a three-way catalyst device () and an SCR device (), the three-way catalyst device being arranged upstream the SCR device in close-coupled position with respect to the engine. An engine control unit () is provided for controlling operation of the engine. The engine control unit is configured to monitor the temperature of the SCR device and to control the engine to change over from an operation with a lean air/fuel mixture to an operation with a stoichiometric or a rich air/fuel mixture in response to the temperature of the SCR device dropping below a temperature threshold.