초록 ▼

An integrated driving-torque control system for an automotive vehicle with a continuously variable automatic transmission (CVT) and an electronically-controlled engine, comprises a desired transmission ratio arithmetic-calculation circuitry calculating a required axle-driveshaft driving torque from

An integrated driving-torque control system for an automotive vehicle with a continuously variable automatic transmission (CVT) and an electronically-controlled engine, comprises a desired transmission ratio arithmetic-calculation circuitry calculating a required axle-driveshaft driving torque from an accelerator depression amount and a vehicle speed, and retrieving a desired transmission ratio on the basis of the required axle-driveshaft driving torque and the vehicle speed VSP. An electronic control unit (ECU) executes automatic shifting control for the CVT so that an actual transmission ratio is adjusted to the desired transmission ratio. A first arithmetic-calculation circuitry calculates a first desired engine output torque corresponding to the required axle-driveshaft driving torque, whereas a second arithmetic-calculation circuitry calculates a second desired engine output torque corresponding to the accelerator depression amount. A selector selects the first desired engine output torque as a desired engine output torque under a condition of VSP.gtoreq.VSP.sub.S (a predetermined vehicle speed threshold), and selects the second desired engine output torque as the desired engine output torque under a condition of VSP

대표청구항 ▼

[ What is claimed is:] [1.] An integrated driving-torque control system for an automotive vehicle with a continuously variable automatic transmission and an electronically-controlled engine whose power output is changeable irrespective of depression of an accelerator pedal, comprising:a desired tran

[ What is claimed is:] [1.] An integrated driving-torque control system for an automotive vehicle with a continuously variable automatic transmission and an electronically-controlled engine whose power output is changeable irrespective of depression of an accelerator pedal, comprising:a desired transmission ratio arithmetic-calculation circuitry calculating a required axle-driveshaft driving torque from a depression amount of the accelerator pedal and a vehicle speed, and retrieving a desired transmission ratio on the basis of the required axle-driveshaft driving torque and the vehicle speed;an automatic shifting control section executing automatic shifting control for the continuously variable automatic transmission so that an actual transmission ratio is adjusted to the desired transmission ratio;a first arithmetic-calculation circuitry calculating a first desired engine output torque corresponding to the required axle-driveshaft driving torque;a second arithmetic-calculation circuitry calculating a second desired engine output torque corresponding to the depression amount of the accelerator pedal;a selector selecting the first desired engine output torque as a desired engine output torque when the vehicle speed is equal to or greater than a predetermined vehicle speed threshold, and selecting the second desired engine output torque as the desired engine output torque when the vehicle speed is less than the predetermined vehicle speed threshold; andan engine power output control section executing engine power output control for the electronically-controlled engine in response to the desired engine output torque selected by said selector.