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:
Mar. 28, 2017
Filed:
Jun. 22, 2011
Applicants:
Frederic Peucat, Brussels, BE;
Jean-claude Habumuremyi, Haaltert, BE;
Joel Op DE Beeck, Lint, BE;
Inventors:
Assignee:
INERGY AUTOMOTIVE SYSTEMS RESEARCH (Societe Anonyme), Brussels, BE;
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/04 (2006.01); F01N 3/20 (2006.01); F01N 11/00 (2006.01);
U.S. Cl.
CPC ...
G01M 15/04 (2013.01); F01N 3/208 (2013.01); F01N 11/002 (2013.01); F01N 2610/144 (2013.01); F01N 2610/146 (2013.01); F01N 2610/1433 (2013.01); F01N 2900/0408 (2013.01); F01N 2900/0412 (2013.01); F01N 2900/1806 (2013.01); F01N 2900/1808 (2013.01); Y02T 10/24 (2013.01); Y02T 10/47 (2013.01);
Abstract
A method for detecting whether an injector with a valve controlled by a PWM signal of an SCR system is at least partially clogged, the system including a pump, or a positive-displacement pump, driven by a motor and pressure of which is controlled by a controller that continuously measures the pressure and/or another parameter characteristic of energy transmitted by the motor to the pump. According to the method, during normal operation of the SCR system, specific portions of one of the measurements are compared with equivalent portions stored in a memory.