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

Claim 3:
4. The wear volume estimation device according to claim 1, wherein
a heat-denatured portion is a portion of the brake pad whose physical property is changed due to frictional heat between the brake rotor and the brake pad,
a penetration depth is a depth of the heat-denatured portion from the contact surface,
the processor is further programmed to estimate the penetration depth based on the temperature of the contact surface and the brake duration,
in the temperature history management process, the processor updates the temperature history information based on the temperature of the contact surface and the penetration depth, and
the temperature history information indicates not only the temperature history of the contact surface but also a profile of a temperature history of the brake pad in a depth direction.