Siemens Aktiengesellschaft

Oliver Prinz

Hong Zhang

Klaus Bayerle

Wolfgang Moser

A method and device for checking temperature values of a temperature sensor of a combustion engine are provided. A first temperature actual value is recorded during a first length of time at an ending of the operation of the combustion engine. A second temperature actual value is recorded during a second length of time during an operating state reflecting the starting of the combustion engine. A turn-off length of time of the combustion engine is determined between the ending of the operation of and the subsequent starting of the operation of the combustion engine. In addition, a temperature set value is established based on the first temperature actual value and on the turn-off length of time. An error of the second temperature actual value is recognized based on the second temperature actual value and on the temperature set value.

Method and device for checking temperature values of a temperature sensor of a combustion engine

In a method for checking temperature values of a temperature sensor of an internal combustion engine, a first temperature value is recorded during a first predefined time period close in time to an operating state of the starting of the internal combustion engine. With the method a check is made to determine whether a cold start of the internal combustion engine is present. An error in the first temperature value is detected if the cold start is detected and the first temperature value is greater than a temperature threshold value.

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Wuppertal, Germany

Oliver Prinz