Isuzu Motors Limited

Yoshihisa Fukuda

This device for estimating a degree of fatigue of a motive force transmitting component is a device for estimating the degree of fatigue of a motive force transmitting component in a motive force transmitting system from a motor/generator (drive source) to a driving wheel (wheel), and is provided with an estimation unit which estimates the degree of fatigue of the motive force transmitting component on the basis of the magnitude and direction of torque acting on the motive force transmitting component, and an output unit which outputs a signal indicating that the degree of fatigue has exceeded a threshold if the degree of fatigue exceeds a prescribed threshold that is set in advance, wherein the degree of fatigue is estimated by the different methods when the motive force transmitting component is a gear or a shaft.

Device for estimating degree of fatigue of motive force transmitting component, and method for estimating degree of fatigue of motive force transmitting component

An estimation device includes mixed amount acquisition partconfigured to acquire a foreign matter mixed amount in a fluid that lubricates meshing elements Gto G, a fatigue damage degree estimation unitconfigured to estimate fatigue damage degrees received by the meshing elements Gto Gper unit traveling of a vehicle based on the acquired foreign matter mixed amount, and a cumulative fatigue damage degree estimation unitconfigured to estimate cumulative fatigue damage degrees of the meshing elements Gto Gbased on the estimated fatigue damage degrees and at least one of a traveling distance and traveling time of the vehicle.

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Fujisawa, Japan

Yoshihisa Fukuda