Gear shifting control system of vehicle continuously-variable transmission

摘要

A gear shifting control system for a vehicle includes an engine, a continuously-variable transmission, and an electronic control unit. The vehicle includes driving wheels. The engine includes an electronic throttle valve controlling a torque of the engine. The continuously-variable transmission is disposed in a power transmission path between the engine and the driving wheels. The electronic control unit is configured to i) decrease the torque of the engine by decreasing a throttle opening of the electronic throttle valve when the continuously-variable transmission upshifts, and ii) output a gear shifting start command for starting the upshifting of the continuously-variable transmission with a delay relative to a decrease start command for starting the decrease of the throttle opening of the electronic throttle valve when the continuously-variable transmission upshifts.

主权项

1. A shifting control system for a vehicle including driving wheels, the shifting control system comprising:
an engine that includes an electronic throttle valve configured to change a torque of the engine; a continuously-variable transmission that is disposed in a power transmission path between the engine and the driving wheels; and an electronic control unit configured to:
i) output a decrease start command to start decreasing the torque of the engine by decreasing a throttle opening of the electronic throttle valve when a decision is made to upshift the continuously-variable transmission, andii) output a shifting start command for starting the upshifting of the continuously-variable transmission after a delay relative to the decrease start command.