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:
Jan. 21, 2014
Filed:
Sep. 05, 2012
Allen B. Rayl, Waterford, MI (US);
Daniel G. Brennan, Brighton, MI (US);
Craig D. Marriott, Clawson, MI (US);
Allen B. Rayl, Waterford, MI (US);
Daniel G. Brennan, Brighton, MI (US);
Craig D. Marriott, Clawson, MI (US);
Abstract
A system according to the present disclosure includes a pressure estimation module and a fault detection module. The pressure estimation module estimates a pressure of hydraulic fluid in a valve actuation system that actuates at least one of an intake valve and an exhaust valve of an engine. The fault detection module compares the estimated pressure to a pressure measured by a pressure sensor disposed in the valve actuation system and detects a fault in the pressure sensor based on a difference between the estimated pressure and the measured pressure.