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Virtual Engine Dynamometer in Service Life Testing of Transmissions: A Comparison Between Real Engine and Electric Dynamometers as Prime Movers in Validation Test Rigs
Technical Paper
2010-01-0919
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A test cell was developed for evaluating a 6-speed automatic transmission. The target vehicle had an internal combustion 5.4L gasoline V8 engine. An electric dynamometer was used to closely simulate the engine characteristics. This included generating mean torque from the ECU engine map, with a transient capability of 10,000 rpm/second. Engine inertia was simulated with a transient capability of 20,000 rpm/second, and torque pulsation was simulated individually for each piston, with a transient capability of 50,000 rpm/second.
Quantitative results are presented for the correlation between the engine driven and the dynamometer driven transmission performance over more than 60 test cycles. Concerns about using the virtual engine in validation testing are discussed, and related to the high frequency transient performance required from the electric dynamometer. Qualitative differences between the fueled engine and electric driven testing are presented.
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Authors
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Citation
Newberger, N., Nevius, T., Lasota, P., Lethbridge, M. et al., "Virtual Engine Dynamometer in Service Life Testing of Transmissions: A Comparison Between Real Engine and Electric Dynamometers as Prime Movers in Validation Test Rigs," SAE Technical Paper 2010-01-0919, 2010, https://doi.org/10.4271/2010-01-0919.Data Sets - Support Documents
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Also In
Optimization, Optical Measurement Nondestructive Testing Techniques, 2010
Number: SP-2295; Published: 2010-04-13
Number: SP-2295; Published: 2010-04-13
References
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- Kaatz, S. Abe, T. Vanhaaften, W. Wilson, B.K. et al. “The Ford Motor Company Transmission NVH Test Cell,” SAE Technical Paper 2003-01-1681 2003
- Little, E. “Extending Dynamometer Performance for Virtual Engine Simulation,” SAE Technical Paper 2005-26-043 2005
- Sugure, Y. Oho, S. Phatak, S.S. Saikalis, G. “Virtual Engine System Prototyping with High-Resolution FFT for Digital Knock Detection Using CPU Model-Based Hardware/Software Co-simulation,” SAE Int. J. Passeng. Cars - Electron. Electr. Syst. 2 1 177 185 2009