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:
Dec. 25, 2018
Filed:
Jun. 09, 2016
GM Global Technology Operations Llc, Detroit, MI (US);
Giuseppe Mazzara Bologna, Nicosia, IT;
Andrea De Filippo, Turin, IT;
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A method of operating a Selective Catalytic Reduction on Diesel Particulate Filter or SDPF is disclosed. During a SDPF regeneration; temperature values are obtained for the SDPF inlet and SDPF outlet. The temperature values are used to calculate a rate of increase of SDPF outlet temperature and a rate of increase of SDPF inlet temperature. A ratio between the rate of increase of SDPF outlet temperature values and the rate of increase of SDPF inlet temperature values is calculated, and if the ratio is greater than a threshold thereof, the exhaust gas composition is modified in some manner.