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:
May. 17, 2005
Filed:
Apr. 03, 2002
David E. Martin, Normal, IL (US);
Sean O. Cornell, Gridley, IL (US);
Ronald D. Shinogle, Peoria, IL (US);
Scott A. Leman, Eureka, IL (US);
David E. Martin, Normal, IL (US);
Sean O. Cornell, Gridley, IL (US);
Ronald D. Shinogle, Peoria, IL (US);
Scott A. Leman, Eureka, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
It is becoming more common for diesel engine cylinders to include an engine compression release brake that can utilize energy built up in the cylinder to provide additional braking for the vehicle. The present invention utilizes a software diagnostic test that is stored in an electronic control module to detect defects in the engine compression release brakes. In particular, the present invention operates a first portion of the engine cylinders in a power mode and a second portion of the engine cylinders in a braking mode and compares a resulting fuel injector response or engine response to an expected value to determine if one or more of the engine compression release brakes are performing as expected.