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:
Jul. 28, 2020
Filed:
Dec. 06, 2017
GM Global Technology Operations Llc, Detroit, MI (US);
Sharon Xiaobin Li, Bloomfield Hills, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A method to determine soot mass of a gasoline engine powered automobile vehicle includes: predefining a time period between approximately 50 seconds to 200 seconds defining a cold start operation of a gasoline engine; determining a critical engine cold start temperature at a time defining a start of the cold start operation; identifying a cold start soot mass value from a lookup table based on the predefined time period and the critical engine cold start temperature; calculating a hot engine soot mass value for a hot engine operating time; repeating the calculating step for at least one next successive hot engine operating time; and adding the cold start soot mass value to the hot engine soot mass value for the hot engine operating time and the at least one next successive hot engine operating time to define a total soot mass value.