发明授权
- 专利标题： Security for engine torque input air-per-cylinder calculations
- 专利标题（中）： 发动机扭矩输入每气缸计算的安全性
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申请号： US12254926申请日： 2008-10-21
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公开(公告)号： US08050841B2公开(公告)日： 2011-11-01
- 发明人: Mark H. Costin , Timothy J. Hartrey , Layne K. Wiggins , Bryan D. Lehman , Roberto De Paula , Joseph M. Stempnik
- 申请人： Mark H. Costin , Timothy J. Hartrey , Layne K. Wiggins , Bryan D. Lehman , Roberto De Paula , Joseph M. Stempnik
- 专利权人： GM Global Technology Operations LLC
- 当前专利权人： GM Global Technology Operations LLC
- 主分类号： G06F7/00
- IPC分类号： G06F7/00
摘要：
An air-per-cylinder (APC) security system for a vehicle comprises an APC determination module, an APC threshold determination module, and an APC diagnostic module. The APC determination module determines first and second APC values for first and second cylinders of an engine, respectively, based on mass airflow (MAF) into the engine. The APC threshold determination module determines an APC threshold based on the first APC value and a spark timing for the first cylinder. The APC diagnostic module selectively diagnoses a fault in the APC determination module when the second APC value is greater than a sum of the first APC value and the APC threshold.