10th Symposium "The Working Process of the Internal Combustion Engine"
Investigation into the Load Pick-up of a Medium Speed Diesel Engine with Sequential Turbocharging by Simulation
Authors
Peter Bartsch, Erich Egert, Andrei Ludu, AVL List GmbH, Graz
Year
2005
Summary
The disadvantages in cost and time of purely experimental investigations become with increasing engine size more and more severe. Therefore the partial, or even complete replacement of test-bed runs by simulation is especially attractive for larger engine sizes. The present contribution deals with the investigation of the load pick-up of a medium speed marine diesel engine for the propulsion of fast vessels by means of simulation. The engine is equipped with a sequential turbocharging system. For this type of supercharging system the activation of additional chargers to the master-TC is a particular challenge. Based on steady state and transient measurement data of the engine in its base configuration, suggestions for an improved matching of the turbocharging system could be derived by simulation. Thereby simulations were not restricted to modeling the engine’s steady state behavior, but also the switching event during the acceleration along the propeller line was considered.
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