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:
Jun. 26, 2018
Filed:
Nov. 08, 2016
GM Global Technology Operations Llc, Detroit, MI (US);
Antonino Conti, Turin, IT;
Andrea De Filippo, Piemonte, IT;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An after-treatment (AT) system for an exhaust gas flow from an internal combustion engine includes an AT device and an exhaust passage carrying the exhaust gas flow from the engine to the AT device. The system also includes a heat exchanger in fluid communication with the exhaust passage upstream of the AT device and configured to remove heat energy from the exhaust gas flow. The system additionally includes an exhaust gas flow bypass in fluid communication with the exhaust passage and configured to route the exhaust gas flow from the exhaust passage to the AT device around, i.e., in bypass of, the heat exchanger. Furthermore, the system includes a bypass valve configured to selectively direct the exhaust gas flow to one of the heat exchanger and the exhaust gas flow bypass. A vehicle employing the AT system and a method of operating such an AT system are also disclosed.