This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Doppler Global Velocimetry Measurement of Charge Motion Inside Piston Bowl of a Motored Diesel Engine and Correlation to CFD Results
Technical Paper
2012-01-1234
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Charge motion inside the piston bowl is an important parameter in the development of the combustion process of DI Diesel engines. To snapshot this charge motion at the start of injection or the start of combustion, normally CFD simulation has traditionally been used. The use of CFD tools has provided some insight into the combustion process and therefore has shortened the development process of piston engines. To achieve a better understanding of the parameters which influence a low emission diesel-combustion the virtual approach needs hardware assisted validation. A test method has been developed to measure charge motion inside the piston bowl of a motored diesel engine at TDC using laser based Doppler Global Velocimetry (DGV). The use of this new measurement approach is versatile. Investigations can be conducted on charge motion caused by variation of compression ratio and piston bowl design or caused by valve timing or valve seat design. The focus of this paper is on the charge motion measurement approach including new seeding particles, basic flow study results, and a comparison of the measurement results to transient CFD- calculations.
Recommended Content
Authors
Citation
Deepe, R., Tschiggfrei, W., Seidel, T., Gruenig, C. et al., "Doppler Global Velocimetry Measurement of Charge Motion Inside Piston Bowl of a Motored Diesel Engine and Correlation to CFD Results," SAE Technical Paper 2012-01-1234, 2012, https://doi.org/10.4271/2012-01-1234.Also In
References
- Dingel, O. Kahrstedt, J. Seidel, T. Zuelch, S. “Dreidimensionale Messung der Ladungsbewegung mit Doppler Global Velocimetry” MTZ 64 2 2003
- Roehle, I. Willert, C.E. “Extension of Doppler Global Velocimetry to periodic flows” Meas. Sci. Technology 12 420 431
- Seidel, T. Steuker, H. “Messung der Zylinderinnenströmung mit ottomotorischer Direkteinspritzung (Measurement of flow inside cylinders of spark ignition direct injection engines)” MTZ 69 4 2008
- Dingel, O. Kahrstedt, J. Behnk, K. Zuelch, S. et al. “Measurement of 3-D In-Cylinder Flow Fields Using Doppler Global Velocimetry,” SAE Technical Paper 2004-01-1409 2004 10.4271/2004-01-1409
- Röhle, I Laser Doppler Velocimetry auf der Basis frequenzselektiver Absorbtion: Aufbau und Einsatz eines Doppler Global Velocimeters (Laser Doppler Velocimetry on the Basis of Frequency-Selective Absorption: Setup and Use of a Doppler Global Velocimeter) dissertation at Bochum University 1999
- Heywood, J. B. “Internal Combustion Engine Fundamentals” McGraw-Hill series in mechanical engineering 1988
- Merker, G. Schwarz, C. Stiesch, G. Otto, F. Verbrennungsmotoren - Simulation der Verbrennung und Schadstoffbildung Stuttgart Teubner Verlag 2006
- Meyers, J. F. Komine, Doppler Global Velocimetry: A New Way to Look at Velocity”, nasa_techdoc_20040161444 1991