![In-Range Sensor Fault Diagnostic System and Method](/abs-image/US/2016/06/16/US20160169140A1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: In-Range Sensor Fault Diagnostic System and Method
- 专利标题(中):范围内传感器故障诊断系统和方法
- 申请号:US14570392 申请日:2014-12-15
- 公开(公告)号:US20160169140A1 公开(公告)日:2016-06-16
- 发明人: Mary L. Yeager , Francis L. Clark , Brandon Gregory , Parag Mehresh
- 申请人: Caterpillar Inc.
- 申请人地址: US IL Peoria
- 专利权人: CATERPILLAR INC.
- 当前专利权人: CATERPILLAR INC.
- 当前专利权人地址: US IL Peoria
- 主分类号: F02D41/26
- IPC分类号: F02D41/26 ; F02D37/02 ; F02D41/14
摘要:
An internal combustion engine includes an electronic controller programmed to determine, for at least one combustion event in a combustion chamber, a theoretical polytropic constant, a measured polytropic constant, and a difference between the theoretical polytropic constant and the measured polytropic constant. The electronic controller is further programmed to calculate an adjusted pressure signal based on the pressure signal and the difference such that the adjusted pressure signal compensates for changes to an accuracy of the pressure sensor over time.
摘要(中):
一种内燃机包括一个电子控制器,其被编程用于为燃烧室中的至少一个燃烧事件确定理论多变常数,测量的多变常数以及理论多变常数与测得的多变常数之间的差。 电子控制器还被编程为基于压力信号和差值来计算调整的压力信号,使得调节的压力信号补偿压力传感器随时间的精度的变化。
公开/授权文献:
- US09435284B2 In-range sensor fault diagnostic system and method 公开/授权日:2016-09-06