SLOPE CONTROL METHOD OF A CONSTANT-VELOCITY TRAVELING VEHICLE FOR PREVENTING NOISE OF AN ENGINE AND FREQUENT SHIFTS OF A GEAR BY ADDING A SLOPE DECIDING FUNCTION

摘要

PURPOSE: A slope control method of a constant-velocity traveling vehicle is provided to restrict noise of an engine caused by the change of frequent TPS(Throttle Position Sensor) values on the slope and frequent shifts generated in the sudden rise of TPS. CONSTITUTION: In a slope control method of a constant-velocity traveling vehicle, constant-velocity managing tolerance becomes one mile when the vehicle travels on the level ground. The constant-velocity managing tolerance becomes two miles when the vehicle travels on the slope. The slope control method detects the slope if the vehicle speed is over 1.5 miles rather than memorized speed and decelerates more than two times. Slope control operation is executed by changing a constant-velocity managing tolerance value from one mile to two miles and released if the vehicle speed satisfies the tolerance value for 20 seconds.