Invention Grant
- Patent Title: Cylinder pressure sensor diagnostic system and method
- Patent Title (中): 气缸压力传感器诊断系统及方法
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Application No.: US12250956Application Date: 2008-10-14
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Publication No.: US07726281B2Publication Date: 2010-06-01
- Inventor: Kenneth J. Buslepp , Douglas R. Verner , Joseph R. Dulzo , David S. Mathews
- Applicant: Kenneth J. Buslepp , Douglas R. Verner , Joseph R. Dulzo , David S. Mathews
- Assignee: GM Global Technology Operations, Inc.
- Current Assignee: GM Global Technology Operations, Inc.
- Main IPC: F02P5/00
- IPC: F02P5/00 ; F02M7/00 ; G01L15/00

Abstract:
A control module comprising a cylinder torque determination module that determines an indicated torque for a cylinder in an engine based on a pressure in the cylinder, a cylinder torque balancing module that determines a derivative term for the cylinder based on rotation of a crankshaft, and a cylinder pressure error detection module that detects a pressure error for the cylinder based on the indicated torque and the derivative term. A method comprising determining an indicated torque for a cylinder in an engine based on a pressure in the cylinder, determining a derivative term for the cylinder based on rotation of a crankshaft, and detecting a pressure error for the cylinder based on the indicated torque and the derivative term.
Public/Granted literature
- US20090043475A1 CYLINDER PRESSURE SENSOR DIAGNOSTIC SYSTEM AND METHOD Public/Granted day:2009-02-12
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