CONTROL SYSTEM OF POWER TRANSMITTING SYSTEM HAVING CONTINUOUSLY VARIABLE TRANSMISSION AND CONTROL METHOD THEREOF

摘要

PURPOSE:To enable to perform stepless gear-shifting control along an ideal operation curve, by controlling the gear-shifting ratio of the subject transmission as a function consisting of the actual performance of a power transmitting system and a desired system performance assigned by an instruction device. CONSTITUTION:Rotation of an engine 10 is transmitted to a CVT (continuously variable transmission) 14 through a clutch and the like, and the properly gear- shifted rotation is transmitted to an output shaft 16. In such device, the ratio of the CVT14 is set by a CVT ratio controller 17. The controller 17 generates a ratio changing rate signal kR as a function cousting of an output T0 measured by a torque sensor 19 and a horse power or a torque alpha being instructed by an accel pedal 18. Meanwhile, the engine 10 regulates and controls a fuel feeder 12 through an engine control circuit 100 according to an engine speed measurement Ne. The acceleration of a car, and other instruction values and measurement of a parameter may also be used in said controller 17.