On Steady-State Response of Multi-Cylinder Engine System

This paper deals with the rigid-body dynamic response of an internal combustion engine. An earlier work (Farhang and Midha, 1989) has presented an efficient algorithm for computing the steady-state rigid-body dynamic response of single degree of freedom engine systems. The method is utilized in the present work to examine the effects of spark time and combustion duration on the performance of a four-stroke, four-cylinder engine. In contrast with the earlier work in which combustion is viewed as an instantaneous process, in this work the combustion is accounted for and is related to the reference crank angle.