Abstract
Four-Cycle Gasoline Engines are widely used in vehicles and machines for construction, agriculture and others.
Such engines are always operated under either step functioning or periodically changing load conditions.
In this paper, the authors made experimentally clear the response of engine speed to rapidly increasing, decreasing or sinusoidally fluctuating load. An analysis was carried out using a simplified model in which time lag of first order of engine systems was taken into account.
The results obtained coincide well with the experimental results, and hence it could be confirmed that it is possible to simulate the speed response to variation of the load.
