Simulation of a Pneumatic Hybrid Powertrain with VVT in GT-Power and Comparison with Experimental Data 2009-01-1323
In the study presented in this paper, experimental data from a pneumatic hybrid has been compared to the results from a simulation of the engine in GT-Power. The engine in question is a single-cylinder Scania D12 diesel engine, which has been converted to work as a pneumatic hybrid. The base engine model, provided by Scania, is made in GT-Power and it is based on the same engine configuration as the one used during real engine testing.
During pneumatic hybrid operation the engine can be used as a 2-stroke compressor for generation of compressed air during vehicle deceleration and during vehicle acceleration the engine can be operated as a 2-stroke air-motor driven by the previously stored pressurized air. There is also a possibility to use the stored pressurized air in order to supercharge the engine when there is a need for high torque, like for instance at take off after a standstill or during an overtake maneuver. Previous experimental studies have shown that the pneumatic hybrid is a promising concept and a possible competitor to the electric hybrid.
This paper consists mainly of two parts. The first one describes an attempt to recreate the real engine as a computer model with the aid of the engine simulation software GT-power. A model has been created and the results have been validated against real engine data. The second part describes a parametric study where different parameters and their effect on pneumatic hybrid performance have been investigated.
Citation: Trajkovic, S., Tunestål, P., and Johansson, B., "Simulation of a Pneumatic Hybrid Powertrain with VVT in GT-Power and Comparison with Experimental Data," SAE Technical Paper 2009-01-1323, 2009, https://doi.org/10.4271/2009-01-1323. Download Citation
Author(s):
Sasa Trajkovic, Per Tunestål, Bengt Johansson
Affiliated:
Division of Combustion Engines, Lund University
Pages: 14
Event:
SAE World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Advanced Hybrid Vehicle Powertrains, 2009-SP-2235
Related Topics:
Computer simulation
Hybrid electric vehicles
Diesel / compression ignition engines
Vehicle acceleration
Simulation and modeling
Compressors
Parts
Powertrains
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