A Study on the Characteristics of Transient Response in a Turbocharged Diesel Engine

Paper #:
  • 912461

Published:
  • 1991-11-01
Pages:
8
Abstract:
This study describes the results of transient behavior for a six-cylinders four-stroke turbocharged diesel engine during the change in operating conditions of the engine by using the computer simulation with measurements on test bed.In order to obtain the dynamic behaviors of the engine, the transient simulation are conducted with serveral kinds of inertia moment ratio in turbocharger and engine, a rapid large load application to the engine, and changes of governor gain constant. From the results of this study, the following conclusions may be summarized.Turbocharger lag is the main cause of the inferior transient performances of turbochared diesel engines. A reduction in the turbocharger moment ratio of inertia brings about the improvement of acceleration performance of disel engines.An increase of the engine moment ratio of inertia decreases cyclic variations of the engine speed.The larger the stored energy in the engine, the less susceptible it is to stalling during a sudden load changes.
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