engleski

Influence of the electric assisting systems on a transient response improvement of a turbocharged diesel engine propelling a truck

It is well known that turbocharged diesel engine suffer from an inadequate response to sudden load increase this being a consequence of the nature of the energy exchange between the engine and the turbocharger. The dynamic response of turbocharged diesel engine could be improved by electric assisting systems, either by direct energy supply with an integrated starter-generator mounted on the engine flywheel, or indirect energy supply with an electrically assisted turbocharger. A zero dimensional computer simulation method was used for the analysis of both types of electric assistance. The credibility of the data presented is further assured by the experimentally determined characteristics of the electric motors used as input parameters of the simulation. The paper offers an analysis of the interaction between a turbocharged diesel engine operating under various load conditions and electric assisting systems, as well as the requirements for supportin electric motors suitable for the improvement of an engine's dynamic response. The presented results of vehicle dynamics and electric generator propulsion indicate features, differences and potentials for both types of electric assistance.

diesel engine; turbocharging; numerical simulation; electric assisting systems

nije evidentirano