Patent ID: 6236925
Filing Date: 2001-05-22
Classification: B60W,F02D,F16H,Y10T

Abstract:
A method of improving driving comfort for a motor vehicle by dynamic control of a desired torque, the method comprising the steps of:measuring an accelerator pedal position and a rotational speed of an internal combustion engine according to an actual driving state;feeding the accelerator position and engine speed as a set of input signals to a first microprocessor of a transmission control for developing a first transmission control signal;providing the first transmission control signal together with a manually adjustable torque request to a second microprocessor for developing an transmission control output signal;filtering the transmission control output signal through a first filter and a second filter to obtain a filtering time output signal;softening a jolt produced during a load reversal by damping a difference between an internal engine speed ratio and a torque request according to the filtering time output signal;inputting the filtering time output signal together with torque-limiting signals originating from the transmission control to a third microprocessor of an engine control for obtaining a first engine control signal; andforwarding the engine control signal from the third microprocessor together with additional torque-limiting signals from the transmission control to a fourth microprocessor in the engine control to obtain engine output control signals for controlling a throttle valve angle, a firing angle and an injection pulse width for managing the dynamics of the torque request and improving the driving comfort of the vehicle.