- 专利标题: TECHNIQUES FOR DETECTING A DISCONNECTED ENGINE AIR HOSE USING AN IN-LINE PRESSURE SENSOR
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申请号: US15264644申请日: 2016-09-14
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公开(公告)号: US20180075713A1公开(公告)日: 2018-03-15
- 发明人: Scott E. Henson , Glen E. Tallarek , Dhaval D. Shah , Vivek Venkatachalam
- 申请人: Scott E. Henson , Glen E. Tallarek , Dhaval D. Shah , Vivek Venkatachalam
- 主分类号: G08B5/36
- IPC分类号: G08B5/36 ; F01M13/02
摘要:
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.