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:
Sep. 30, 2014
Filed:
Nov. 21, 2011
Aaron Conrad Luft, Frankfort, IN (US);
Daniel Streutker, Lafayette, IN (US);
Rammohan Sankar, Dunlap, IL (US);
Travis Eugene Barnes, Metamora, IL (US);
Gregory L. Armstrong, Edwards, IL (US);
Aaron Conrad Luft, Frankfort, IN (US);
Daniel Streutker, Lafayette, IN (US);
Rammohan Sankar, Dunlap, IL (US);
Travis Eugene Barnes, Metamora, IL (US);
Gregory L. Armstrong, Edwards, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An engine system includes an exhaust system fluidly connected to an electronically controlled engine. Exhaust from the engine may travel a first pathway through a turbine of a turbocharger, or a second pathway that bypasses the turbine. An electronically controlled wastegate vale is biased to close the second pathway. An electronic controller is in communication with the electronically controlled engine and the electronically controlled wastegate valve. The electronic controller is configured to execute a wastegate diagnostic algorithm to detect a stuck closed default condition of the electronically controlled wastegate valve, and derate the engine in response to detection of a stuck closed fault condition.