Experiments on Wave Transmission and Reflection by Turbochargers in Engine Operating Conditions 2006-01-0022
An extensive experimental study is described whose main objective is to characterize the acoustic and flow dynamic response of turbocompressors to flow pulsation from a four cylinder high speed direct injection (HSDI) diesel engine. Four different turbochargers with centrifugal compressors of different size were considered, each one with a different turbine. Compressors were excited with pulsating flow in real engine conditions. Wave decomposition was used to obtain incident and reflected pressure perturbations upstream and downstream of the turbochargers, which allowed determining the zones of the compressor charts where they are more permeable to pressure oscillations, and to study the correlation of these magnitudes with turbocharger operating conditions. The results obtained are useful to determine in which conditions the pulses passing through the compressor can cause relevant noise emission, and to establish their eventual relevance regarding the use of the length of the ducts upstream of the compressor for engine tuning purposes.
Citation: Torregrosa, A., Serrano, J., Dopazo, J., and Soltani, S., "Experiments on Wave Transmission and Reflection by Turbochargers in Engine Operating Conditions," SAE Technical Paper 2006-01-0022, 2006, https://doi.org/10.4271/2006-01-0022. Download Citation
Author(s):
A. J. Torregrosa, J. R. Serrano, J. A. Dopazo, S. Soltani
Affiliated:
CMT-Motores Térmicos. Universidad Politécnica de Valencia, Spain, Renault, France
Pages: 14
Event:
SAE 2006 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
CI & SI Power Cylinder Systems and Power Boost Technology 2006-SP-2013, SAE 2006 Transactions Journal of Engines-V115-3
Related Topics:
Diesel / compression ignition engines
Turbochargers
Engine cylinders
Compressors
Transmissions
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »