发明名称 |
METHOD FOR THE LAMBDA CONTROL OF AN INTERNAL COMBUSTION ENGINE HAVING A CATALYZER |
摘要 |
The invention is directed to a method for lambda control of an internal combustion engine having a catalyzer and a measuring probe arrangement in front of the catalyzer for emitting a measuring signal and a testing probe arrangement behind the catalyzer for emitting a test signal. The method includes the steps of: forming a ratio between the measuring signal and the test signal at pregiven operating conditions; evaluating said ratio as an estimating quantity for the conversion rate of the catalyzer; and, modifying output values of control parameters in a pregiven controlled manner on the basis of the instantaneous values of said ratio, said output values being applicable for controlling an internal combustion engine having a new catalyzer. This method affords the advantage that it evaluates a catalyzer with the aid of the above-mentioned ratio value and controllably modifies values of control parameters in dependence upon the evaluation ratio. This leads to an especially stable control with low toxic gas discharge.
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申请公布号 |
US5203165(A) |
申请公布日期 |
1993.04.20 |
申请号 |
US19910738360 |
申请日期 |
1991.07.31 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
WILD, ERNST;PLAPP, GUENTHER;RAFF, LOTHAR;WESTERDORF, MICHAEL;SCHNAIBEL, EBERHARD |
分类号 |
F01N9/00;F01N11/00;F02D41/14 |
主分类号 |
F01N9/00 |
代理机构 |
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主权项 |
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地址 |
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