Abnormality detection device for continuously variable transmission and abnormality detection method for continuously variable transmission

摘要

An abnormality detection device for a continuously variable transmission includes: a setting module that sets a target gear ratio based on an operation amount of an accelerator and a vehicle speed; an calculation module that determines an input torque to the continuously variable transmission from an output torque of an engine, obtains a generated driving force of a power unit including the engine and the continuously variable transmission according to the input torque and the target gear ratio, and calculates an acceleration of a vehicle based on the generated driving force of the power unit and a running resistance; and a determination module that determines the target gear ratio to be abnormal when the acceleration of the vehicle calculated by the calculation module is lower than or equal to a predetermined value.