Design of a 4-Cylinder GTDI Engine with Part-Load HCCI Capability 2013-01-0287
This paper focuses on the engine design portion of the Advanced Combustion Controls Enabling Systems and Solutions (ACCESS) project, a joint research project partially funded by a Department of Energy grant. The main goal of the project is to improve fuel economy in a gasoline fueled light-duty vehicle by 25% while maintaining similar performance and meeting SULEV emission standards.
A Cadillac CTS with a high-feature naturally-aspirated 3.6L V6 engine was chosen as the baseline vehicle. To achieve the target fuel economy improvement over the baseline engine configuration, gasoline turbocharged direct-injection (GTDI) technology was utilized for engine downsizing in combination with part-load lean homogeneous charge compression ignition (HCCI) operation for further fuel economy gains. The GM 2.0L I4 GTDI Ecotec engine was used as the platform for the basis of this design. The production engine hardware was redesigned to support various combustion system options to be investigated during the engine development portion of this program.
One-dimensional (1D) modeling was used to determine the optimal valve lift profiles, compression ratio and boosting configuration. Fuel economy improvements expected from the new engine design and advanced combustion controls were determined using vehicle simulation.
Citation: Wheeler, J., Polovina, D., Frasinel, V., Miersch-Wiemers, O. et al., "Design of a 4-Cylinder GTDI Engine with Part-Load HCCI Capability," SAE Int. J. Engines 6(1):184-196, 2013, https://doi.org/10.4271/2013-01-0287. Download Citation
Author(s):
Jennifer Wheeler, Dusan Polovina, Vasile Frasinel, Oliver Miersch-Wiemers, Alan Mond, Jeff Sterniak, Hakan Yilmaz
Affiliated:
AVL Powertrain Engineering Inc, Robert Bosch LLC
Pages: 13
Event:
SAE 2013 World Congress & Exhibition
ISSN:
1946-3936
e-ISSN:
1946-3944
Also in:
SAE International Journal of Engines-V122-3, SAE International Journal of Engines-V122-3EJ
Related Topics:
Fuel economy
Simulators
Combustion and combustion processes
Downsizing
Environmental regulations and standards
HCCI engines
Gasoline
Hardware
Low emission vehicles (LEV) and zero emission vehicles (ZEV)
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