10th Symposium "The Working Process of the Internal Combustion Engine"
Controlled Pulse Turbocharging for Large Diesel Engines
Authors
Ioannis Vlaskos, Ennio Codan, ABB Turbo Systems Ltd., Baden/Switzerland
Year
2005
Summary
Controlled pulse turbocharging is an interesting alternative for charging large diesel engines as it unites the advantages of pulse turbocharging at part load with the advantages of constant pressure turbocharging in the full-load operating area of an engine simply by closing and opening the valves in the exhaust pipe system. The main components of a controlled pulse turbocharging system are the exhaust manifold with controlled exhaust valves and a turbocharger appropriate for pulse turbocharging. Simulation of the engine process can make an essential contribution to the design and optimization of an engine’s exhaust pipe system. This paper presents some aspects involved in the thermodynamic design of a controlled pulse turbocharging system for a five-cylinder diesel engine and indicates, on the basis of measuring results, the potential of controlled pulse turbocharging under steady-state as well as transient operating conditions.
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