| 摘要 |
PURPOSE: A control method of driving force in the turning of an FR(Front-engine Rear-wheel drive) vehicle is provided to prevent an accident caused by overspeed the turning of an FR vehicle by controlling driving force through comparison between a steering angle and vehicle speed in turning of the vehicle. CONSTITUTION: A steering angle of a steering wheel is detected from a corresponding sensor. The RPM(Revolutions Per Minute,Rf,Rr) of front and rear wheels is detected from each RPM sensor. Then, a slip rate(S) and velocity(V) of the rear wheels are calculated from the RPM of the front and rear wheels. If the slip rate is lower than 0, the RPM of the rear wheels is lower than the RPM of the front wheels. Turning of a vehicle is decided by the steering angle. When the vehicle is turned, the velocity of the rear wheels is compared with Vm wherein the Vm is value obtained from a map of an ECU(Electronic Control Unit). The Vm is the optimum velocity for securing safety in turning of a vehicle at the current steering angle. If the velocity is larger than the Vm, the vehicle has danger of escaping a traffic lane. The ECU isolates fuel to a fuel injector to reduce the drive force of the rear wheels. Therefore, the turning velocity of the vehicle is reduced.
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