To provide a control method and device for electric heating of a sensor to avoid the overheat of the sensor disposed in an exhaust gas system for an internal combustion engine.
In the control method for the electric heating of the sensor disposed in the exhaust gas system for the internal combustion engine, a total heating output (42) to the sensor is controlled and an actual value (33) for the temperature of the sensor is determined by the measurement of a characteristic parameter, for example, a resistance. A rated heating output (41) is determined via a characteristic map (20) depending on operation points (30, 31) of the internal combustion engine. A controller (10) determines a control heating output (40) from the actual value (33) and a new target value (34) for the temperature. The total heating output (42) is produced as a sum of the rated heating output (41) and the control heating output (40).
KORING ANDREAS
| JPH10331700A | 1998-12-15 | |||
| JP2001323838A | 2001-11-22 | |||
| JP2002048763A | 2002-02-15 | |||
| JP2000304721A | 2000-11-02 | |||
| JP2003314350A | 2003-11-06 | |||
| JP2003328821A | 2003-11-19 | |||
| JPH04501613A | 1992-03-19 |
Yasushi Kobayashi
Hiroyuki Tomita
Osamu Hoshino