Patent ID: 6654678
Filing Date: 2003-11-25
Classification: F02D

Abstract:
A control system for an internal combustion engine that delivers net torque to a load, the control system comprising:one or more processors for processing various data to develop data for control of various engine functions including control of engine fueling; an operating program for causing the one or more processors to develop desired engine fueling data representing desired fueling for the engine by a) developing i) data representing a value of torque subtraction accounting for torque, that if added to net torque, would correspond to gross torque developed by the engine from fueling, ii) data representing speed at which the engine is running, and iii) data representing desired engine running speed, b) processing the torque subtraction data and the desired engine speed data to develop feed-forward fueling data representing fueling that is projected to cause the engine to run at desired speed, c) processing the data representing speed at which the engine is running and the data representing desired engine running speed to develop data representing engine speed error; d) processing the engine speed error data according to one or more control functions each having gain determined by the torque subtraction data value to develop fueling adjustment data for compensating desired engine fueling for the torque subtraction data; and e) processing the fueling adjustment data and the feed-forward fueling data to develop desired engine fueling data representing desired fueling for the engine.