Simulation of a Pneumatic Hybrid Powertrain with VVT in GT-Power and Comparison with Experimental Data
Author
Summary, in English
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.
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.
Department/s
Publishing year
2009
Language
English
Publication/Series
SAE Technical Paper Series
Full text
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Document type
Conference paper
Publisher
Society of Automotive Engineers
Topic
- Other Mechanical Engineering
Keywords
- Air
- pneumatic
- hybrid
- electric
- efficiency
- regenerative
- valve
- VVT
- VVA
Conference name
SAE World Congress, 2009
Conference date
2009-04-20 - 2009-04-23
Conference place
Detroit, Michigan, United States
Status
Published
Project
- Pneumatic Hybrid Engine
ISBN/ISSN/Other
- ISSN: 0148-7191
- SAE Technical Paper 2009-01-1323