The present invention pertains to a sensor output value estimation device that effectively estimates sensor output values reflecting a response delay of a temperature sensor. The sensor output value estimation device includes an estimated gas temperature c...

Provided is a fault diagnosis device for temperature sensors. At the time (t2) of a start of an internal combustion engine (1), a thermal equilibrium condition may be established and thus the deviation of temperatures detected by at least two reference tem...

A temperature sensor is provided in an exhaust passage in an internal combustion engine. A delay in a response from the temperature sensor is compensated for. A change rate is sequentially calculated which is an amount of change in a detected value from th...

In a glow plug energization controlling device which, not only at a time of starting but also at a time of driving, controls energization of a glow plug used in a preheating apparatus of a diesel engine, making it possible to utilize even low-cost, mass-pr...