| 摘要 |
PROBLEM TO BE SOLVED: To provide a travel control device of a vehicle which is not largely accelerated even when an automatic brake is released after the car speed is decelerated to a prescribed speed by means of the automatic brake and the hunting of control can be effectively prevented, when performing ACC travelling on a descending road.SOLUTION: Even after an automatic brake is released after a brake control unit 8 actuates the automatic brake and decelerates the car speed during ACC travelling on a descending road with a reverse driving force from driving wheels 1a, 1b, a traction control unit 7 presets change gear ratio i of an automatic transmission to a value which maintains a target turbine rotation number Ntt preset just before releasing the automatic brake. Because the change gear ratio i is set as the value which maintains the target turbine rotation number Ntt even after the automatic brake is released, car speed is not largely accelerated even after the automatic brake ie released and the control hunting can be prevented. |
