Patent ID: 6554091
Filing Date: 2003-04-29
Classification: B60K,B60W,F02D,F16H

Abstract:
A method for controlling a throttleless internal combustion engine responsive to a desired engine speed signal, the method comprising the steps of:generating a driver demanded engine speed value corresponding to an operator input; generating a speed control system engine speed value corresponding to a predetermined speed value to permit vehicle operation at a constant speed by a speed control system; arbitrating between said driver demanded engine speed value and said speed control system engine speed value to derive a first desired engine speed value; limiting said first desired engine speed value by a vehicle speed limit value, engine speed limit value, and transmission speed limit value to generate a second desired engine speed value; and controlling said engine output by modifying at least one of a valve timing value, spark advance value, or fuel flow value as a function of said second desired engine speed value and an actual engine speed value.