Patent ID: 11867246
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 1:
2. The wear volume estimation device according to claim 1, wherein
the temperature history of the contact surface indicates whether or not the temperature of the contact surface has a history of becoming equal to or higher than a first threshold in past,
a first wear volume function is the wear volume function that is used in a case where the temperature of the contact surface does not have the history of becoming equal to or higher than the first threshold,
a second wear volume function is the wear volume function that is used in a case where the temperature of the contact surface has the history of becoming equal to or higher than the first threshold,
the storage stores information on the first wear volume function and the second wear volume function,
in the case where the temperature of the contact surface does not have the history of becoming equal to or higher than the first threshold, the processor selects the first wear volume function and calculates the wear volume by using the first wear volume function, and
in the case where the temperature of the contact surface has the history of becoming equal to or higher than the first threshold, the processor selects the second wear volume function and calculates the wear volume by using the second wear volume function.