FOUR WHEEL DRIVE VEHICLE AND WHEEL SLIP CONTROL METHOD THEREOF

摘要

A four-wheel drive vehicle of the present invention comprises: a front-wheel drive train (10) where the power generated in a front-wheel motor (12) is transferred to a left front-wheel (15) and a right front-wheel (16) through a front-wheel differential gear (14); a rear-wheel drive train (20) where the power generated in a rear-wheel motor (22) is transferred to a left rear-wheel (25) and a right rear-wheel (26) through a rear-wheel differential gear (24); and a driving force controller (50), which controls the speed of a vehicle and performs controls required in field devices. The driving force controller (50) allows the wheel slip control of a front-wheel (FW) having the left front-wheel (15) and the right front-wheel (16), and a rear-wheel (RW) having the left rear-wheel (25) and the right rear-wheel (26) be performed in a wheel slip determination mode having at least two stage speed modes in accordance to vehicle speed, and in a wheel slip response mode to control driving force to be different depending on whether wheel slip is performed. Therefore, when wheel slip control is performed, reduction of a wheel driving force and unnecessary energy consumption can be prevented. Also, the lifespan of a brake pad can be extended.