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:
Nov. 13, 2018
Filed:
Dec. 06, 2016
GM Global Technology Operations Llc, Detroit, MI (US);
Raffaele Esposito, Siano, IT;
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method and apparatus are disclosed for detecting a clogging of a fuel injector of an internal combustion engine. Each fuel injector of the plurality of fuel injectors may be tested for a clogging. A test injector is switch off. A requested value of a fuel quantity to be injected by the other fuel injectors of the plurality of fuel injectors is adjusted to operate the internal combustion engine in an idle mode. A difference is calculated between the requested value of the fuel quantity and a reference value of the fuel quantity to be injected by all the fuel injectors of the plurality of fuel injectors to operate the internal combustion engine in idle mode. The calculated difference for each test injector is used to identify if the test injector is clogged.