Noise Characteristics of a Micro Gas Turbine for Use in a Serial Hybrid Concept

Paper #:
  • 2014-01-2066

Published:
  • 2014-06-30
DOI:
  • 10.4271/2014-01-2066
Citation:
Sarradj, E., Geyer, T., Jobusch, C., Kießling, S. et al., "Noise Characteristics of a Micro Gas Turbine for Use in a Serial Hybrid Concept," SAE Technical Paper 2014-01-2066, 2014, doi:10.4271/2014-01-2066.
Pages:
6
Abstract:
The development of energy-efficient and lightweight vehicles is a major challenge for researchers and engineers in the automotive industry, with one solution being the use of micro gas turbines in serial hybrid vehicles. Among other advantages, the use of a micro gas turbine instead of a reciprocating engine enables a high reliability and low emissions. What makes the concept of using a gas turbine even more interesting are its special NVH characteristics, which are quite different from those of a reciprocating engine. Besides the fact that a gas turbine in general produces less noise and vibration than a diesel engine of the same power, the characteristic noise spectrum is also very different. In this paper, the noise characteristics of a micro gas turbine are compared to those typical for a common reciprocating engine and the sources of the noise are considered. The data that form the basis for these analyses were obtained using measurements on a 70 kW micro gas turbine that is designed to be used in a serial hybrid concept for buses. Appropriate noise control strategies are discussed.
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