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:
May. 17, 2016
GM Global Technology Operations Llc, Detroit, MI (US);
Cristian Taibi, Turin, IT;
Francesco Siano, Givoletto, IT;
Other;
Abstract
A system and method is disclosed for diagnosing a malfunctioning of a pressure sensor in an aftertreatment system of an internal combustion engine. A first value of a differential pressure across the particulate filter is measured during the identified fuel cut-off state of the internal combustion engine. An exhaust back pressure valve of the aftertreatment system is operated toward a predetermined closed position thereof, and a second value of a differential pressure across the particulate filter is measured. A difference between the second value and the first value is calculated, and a malfunctioning of the differential pressure sensor is identified when the calculated difference is higher than a predetermined threshold value thereof.