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Otto and VCR Miller Engine Performance during the European Driving Cycle
Technical Paper
2006-01-0440
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Spark ignition engines have low efficiency when working at part and light loads. This can be opposed by using a slightly different thermodynamic cycle known as Miller cycle. This cycle can be implemented in conventional engines if they are equipped with systems providing variable valve timing and variable compression ratio.
A computer model to simulate internal combustion engines is used to generate and characterize in terms of torque and brake specific fuel consumption, both Otto cycle engines and Miller cycles engines with VCR. These engines are used in a second computer model to generate the European driving cycle, using the same car and the same gear box, in order to evaluate its performance in terms of fuel consumption.
Different ratios for gear boxes using the Miller cycle are proposed in order to achieve a more efficient car (engine, gear box, structure), with less fuel consumption and less green house gas emissions for the urban driving operation.
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Ribeiro, B., Martins, J., and Kothari, N., "Otto and VCR Miller Engine Performance during the European Driving Cycle," SAE Technical Paper 2006-01-0440, 2006, https://doi.org/10.4271/2006-01-0440.Also In
References
- Martins, J. Uzuneanu, K Ribeiro, B. Jasansky, O Thermodynamic Analysis of an over-Expanded Engine SAE 2004-01-0617 2004
- Martins, J. Ribeiro, B. Fuel Consumption Reduction by Adopting a Different Spark Ignition Engine Cycle Advances in Technology and Instrumentation to Guarantee the Reduction of GHG in Different Sectors October 2004 Lisbon, Portugal
- Heywood, B. J. Internal Combustion Engines Fundamentals McGraw-Hill 1988
- Blair, G. P. Design and Simulation of Four-Stroke Engines SAE 1999
- Ferguson, C.R. Internal Combustion Engines Applied Thermodynamics J. Wiley & Sons 1986
- Çengel, Y. A. Boles, M. A. Thermodynamics An Engineering Approach Third McGraw-Hill 1998
- Abd Alla, G. H. Computer simulation of a four stroke spark ignition engine En. Convers. Mng. 43 2002 1043 1061
- Patton, K. J. et al. Development and Evaluation of a Friction Model for Spark-Ignition Engines SAE 890836 1989