发明授权
- 专利标题: Method for the lambda control of an internal combustion engine having a catalyzer
- 专利标题(中): 具有催化剂的内燃机发动机的控制方法
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申请号: US738360申请日: 1991-07-31
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公开(公告)号: US5203165A公开(公告)日: 1993-04-20
- 发明人: Ernst Wild , Gunther Plapp , Lothar Raff , Michael Westerdorf , Eberhard Schnaibel
- 申请人: Ernst Wild , Gunther Plapp , Lothar Raff , Michael Westerdorf , Eberhard Schnaibel
- 申请人地址: DEX Stuttgart
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: DEX Stuttgart
- 优先权: DEX4024210 19900731
- 主分类号: F01N9/00
- IPC分类号: F01N9/00 ; F01N11/00 ; F02D41/14
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.
公开/授权文献
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