Control device for vehicle drive device

摘要

A control device of a vehicle drive device includes a hydraulic power transmission device having an input-side rotating element to which power from an engine is input and an output-side rotating element outputting power to drive wheels, a first electric motor coupled to the input-side rotating element, and a second electric motor coupled to the drive wheels, the vehicle drive device having an electric path through which power is electrically transmitted between the first electric motor and the second electric motor and a mechanical path through which power is mechanically transmitted via the hydraulic power transmission device, the control device controlling an operating point of the engine by adjusting a torque of the first electric motor, the control device changing a proportion of power transmitted through the electric path and power transmission through the mechanical path based on a request amount when the operating point of the engine is controlled.

主权项

1. A control device of a vehicle drive device including a hydraulic power transmission device configured to have an input-side rotating element to which power from an engine is input and an output-side rotating element outputting power to drive wheels, a first electric motor configured to be directly or indirectly coupled to the input-side rotating element, and a second electric motor configured to be directly or indirectly coupled to the drive wheels,
the vehicle drive device configured to have an electric path through which power is electrically transmitted by giving/receiving electric power between the first electric motor and the second electric motor and a mechanical path through which power is mechanically transmitted via the hydraulic power transmission device, the control device of the vehicle drive device being configured to control an operating point of the engine by adjusting a torque of the first electric motor, the control device of the vehicle drive device being configured to adjust the torque of the first electric motor such that a sum of an engine torque and the torque of the first electric motor is balanced with an input-side load torque generated in the input-side rotating element depending on a speed ratio of the hydraulic power transmission device, the input-side load torque being calculated based on an engine rotation speed indicated by a target engine operating point and a capacity coefficient of the hydraulic power transmission device depending on the speed ratio, from a predetermined equation, and the torque of the first electric motor being calculated by subtracting the engine torque indicated by the target engine operating point from the input-side load torque and to determine whether a proportion of power transmitted by power transmission through the electric path and power transmission through the mechanical path is changed by adjusting the torque of the first electric motor, based on a request amount when the operating point of the engine is controlled.