Predictive Engine Spark Timing Control

In this paper, new event-based engine control algorithms utilizing more than one reference pulse per cylinder firing event are designed for improved engine spark timing control. These control algorithms, based on the cyclic nature of the internal combustion engines, can achieve more accurate estimation of crankshaft rotational speed and position than conventional algorithms. The application of these prediction algorithms to improve the accuracy of engine spark timing control is demonstrated using a dynamic engine simulation.