发明名称 |
METHOD FOR FUNCTIONAL CHECKING OF AN EXHAUST RECYCLING SYSTEM ON AN INTERNAL COMBUSTION ENGINE |
摘要 |
For the checking of an exhaust gas recycling valve, the control signal for the exhaust gas return valve is returned from a defined value to zero, in the idle state of the internal combustion engine while the vehicle is at a standstill and the reaction of the signal (MAF) from an airflow detector in the inlet tract is evaluated. Should the signal not exceed a given threshold value (MAE SWD), within a first time period (T2), then a faulty dynamic is assigned to the exhaust recycling valve. Should the signal not exceed a second given threshold value (MAF SWS), within a second time period (T3), then it is determined that the exhaust recycling valve can not be completely shut. |
申请公布号 |
EP1305513(A1) |
申请公布日期 |
2003.05.02 |
申请号 |
EP20010957749 |
申请日期 |
2001.08.02 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
KAESBAUER, MICHAEL;FRIEDRICH, ARNO;BIRKNER, CHRISTIAN |
分类号 |
F02B47/08;F02B77/08;F02D41/00;F02D41/22;F02M25/07 |
主分类号 |
F02B47/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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