An on-board diagnostic test for an exhaust gas oxygen sensor includes sensing the output of the oxygen sensor and summing the output over a specified period to determine the length of the trace of the sensor voltage versus time. Such length over a given time period indicates the activity of the sensor. This data is compared to a threshold to determine if the exhaust gas oxygen sensor meets certain performance requirements.
申请公布号
US5801295(A)
申请公布日期
1998.09.01
申请号
US19970863221
申请日期
1997.05.27
申请人
FORD GLOBAL TECHNOLOGIES, INC.
发明人
DAVEY, CHRISTOPHER KIRK;SHAH, ANAND J.;DICKISON, DONALD FENWICK;NADER, DAVID R.;JERGER, ROBERT JOSEPH;KLUZNER, MICHAEL IGOR