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. 03, 2012
Filed:
Sep. 28, 2005
Min Sun, Windsor, CA;
Houshun Zhang, Canton, MI (US);
Zornitza Pavlinova Pavlova-mackinnon, Farmington Hills, MI (US);
Kevin Dean Sisken, Saline, MI (US);
Min Sun, Windsor, CA;
Houshun Zhang, Canton, MI (US);
Zornitza Pavlinova Pavlova-MacKinnon, Farmington Hills, MI (US);
Kevin Dean Sisken, Saline, MI (US);
Detroit Diesel Corporation, Detroit, MI (US);
Abstract
A system and method for controlling an internal combustion engine senses differential pressure across the diesel particulate filter to monitor at least one of soot cake permeability and filter wall permeability as a function of exhaust temperature and mass flow velocity. The system and method preferably respond to both porous wall and soot cake permeabilities to determine when the soot level matches a threshold at which an operator may be warned, or at which a remedial operation may be triggered, or at which a more protective action taken by the engine control module.