| 摘要 |
A method for regulating an Otto engine and for checking a catalyst connected downstream of the engine includes measuring at least a quantity of one component of an exhaust gas leaving an Otto engine before the exhaust gas enters a catalyst connected downstream of the engine, and measuring a quantity of at least two components of the exhaust gas after the exhaust gas leaves the catalyst. An apparatus for regulating the engine unit and checking the catalyst includes a lambda sensor disposed in the exhaust line between the engine unit and the catalyst. A first line is connected to the lambda sensor. A diagnosis and engine control unit is connected to the first line for receiving output signals of the lambda sensor. A sensor unit is downstream of the output of the catalyst. A second line delivers output signals of the sensor unit to the diagnosis and engine control unit. A third line delivers output signals of the diagnosis and engine control unit to the engine unit.
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