Nissan Motor Company Limited

Tetsunobu Morita

Hiroshi Arita

Kenichiro Murakami

Ryoji Kadono

Shuusaku Katakura

The present invention provides a vehicle control method capable of suppressing an increase in the frequency of stopping and restarting of the engine when the braking device is activated at the self-driving mode. When the operation mode is set as self-driving, the braking device is activated in accordance with a system deceleration request to keep an actual vehicle-speed at a target vehicle-speed or change the actual vehicle-speed at the target vehicle-speed or lower depending on environment surrounding the vehicle. Further, a braking amount is estimated, the braking amount is a magnitude of a braking force generated from the activated braking device. When the braking amount is an engine-stopping enabling threshold or more, enabling stopping is allowed. When the braking amount is less than the engine-stopping enabling threshold, enabling stopping is not allowed.

Vehicle control method and vehicle control device

Provided is a control method for hybrid vehicles that change an operation mode of the vehicle between HEV mode and EV mode in accordance with the size of a target drive force. When the manual-driving mode is set, the target driving force is calculated based on a vehicle-speed and a driver's driving operation, and when self-driving is set, the target driving force is calculated based on a target vehicle-speed and an actual vehicle-speed. When self-driving is set, an amount to enlarge a dead-zone width W&#x3b1; to control the motor generator to perform powering relative to the dead-zone width when the manual-driving mode is set is set larger than an amount to enlarge a dead-zone width to control the motor generator to perform regeneration relative to the dead-zone width when the manual-driving mode is set.

Control method for hybrid vehicles

A vehicle control device includes an engine stop/start determination unit and an engine controller and a re-acceleration scene predicting unit. The engine stop/start determination unit determines stopping and starting of the engine based on a magnitude of the accelerator position opening amount unit. The engine controller carries out the stopping/starting of the engine in accordance with the determination of the engine stop/start determination unit. The re-acceleration scene predicting unit predicts a re-acceleration scene in which an accelerator is depressed after the accelerator has been released based on the accelerator position opening amount. When the re-acceleration scene predicting unit predicts a re-acceleration scene of the engine, the engine stop/start determination unit prohibits the stopping of the engine while the engine is running, and the starting of the engine is carried out by the accelerator being depressed while the engine is stopped.

Growing community of inventors

Kanagawa, Japan

Tetsunobu Morita