The present invention provides an electronic four wheel drive (4WD) system with reinforced cooperation control performance of an anti-lock brake system (ABS). An ABS activation (ACT) signal of an ABC control unit (200) and a 4WD_open signal of an electronic stability control (ESC) unit (100) are used. When the ABS ACT signal and the 4WD_open signal are recognized, a vehicle is determined as an electronic stability control (ESC) vehicle, so 4WD is released. Meanwhile, when only the ABS ACT signal is recognized, a vehicle is recognized as an ABS vehicle, so driver′s desire is determined through an on-state of a brake pedal and an off-state of an accelerator pedal opening, and then the 4WD is released. Therefore, when driving the vehicle on a low friction road (a snowy or icy road) where ABS ACT activation is achieved without operation of a brake pedal, the side effect of a 4WD control logic is resolved. Particularly, a limit of logic mounting of the ABS control unit (200) is resolved by a sub-logic of the electronic 4WD system, thereby preventing deterioration of driving performance of an ABS solo 4WD and turning off the electronic 4WD system.
ELECTRONIC FOUR WHEEL DRIVE SYSTEM FOR REINFORCING COOPERATION CONTROL ANTI-LOCK BRAKE SYSTEM AND FOUR METHOD THEREOF
2015-09-07
Patent
Electronic Resource
Korean
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