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. 21, 2014
Filed:
Jan. 13, 2011
Stefano Cassani, Turin, IT;
Stefano Cassani, Turin, IT;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method is provided for operating an engine. The engine is configured to post inject a quantity of fuel into a combustion chamber and includes, but is not limited to a Diesel Oxidation Catalyst (DOC) that has an inlet and an outlet. The method includes, but is not limited to determining an open loop post injection quantity qof fuel as a function of a target temperature Tfor the Diesel Oxidation Catalyst (DOC) outlet, the step of determining the current temperature Tat the Diesel Oxidation Catalyst (DOC) outlet and the step of determining, for the temperature T, a closed loop post injection quantity qof fuel needed for correcting the open loop post injection quantity qfor determining a correct post injection fuel quantity qneeded to match the desired DOC heat release related to the target temperature Twhen operating the engine system.