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:
Aug. 07, 2018
Filed:
Sep. 14, 2016
Scott E Henson, Chelsea, MI (US);
Glen E Tallarek, Grosse Pointe Woods, MI (US);
Dhaval D Shah, Rochester Hills, MI (US);
Vivek Venkatachalam, Recife, BR;
Scott E Henson, Chelsea, MI (US);
Glen E Tallarek, Grosse Pointe Woods, MI (US);
Dhaval D Shah, Rochester Hills, MI (US);
Vivek Venkatachalam, Recife, BR;
FCA US LLC, Auburn Hills, MI (US);
Abstract
A diagnostic system for a crankcase ventilation system of a boosted engine includes a pressure sensor (i) disposed in-line along a make-up air (MUA) hose of the crankcase ventilation system and (ii) configured to measure a pressure in the MUA hose, the MUA hose connecting an induction system of the engine to a crankcase of the engine. The diagnostic system also includes a controller configured to: detect a mild acceleration operating condition of the engine; and in response to detecting the mild acceleration operating condition: obtain a plurality of pressure samples based on the measured pressure by the pressure sensor, compare the plurality of pressure samples to a fault threshold indicative of a disconnected MUA hose, and based on the comparing, generate a fault signal indicative of a disconnected MUA hose.