Development of performance and combustion system of Atkinson cycle internal combustion engine

The application of hybrid vehicle is a practical technical solution to the energy shortage and the environmental pollution. The internal combustion engine (ICE) plays a key role in the development of the hybrid vehicle. Based on the requirements of the hybrid vehicle and the characteristic of Atkinson cycle, a set of designing methods for the Atkinson cycle gasoline engine is presented through the analysis of the optimized matching for the compression ratio, valve timing and the combustion chamber. The designing method has been verified by the bench test and the results show that the fuel consumption can be improved by 12%–15% with the reduction of the low speed torque by 10%, and the low fuel consumption region in the fuel map extends significantly with the rated power almost keeping constant. It may be of great reference for the development of hybrid vehicle technology in China.

[1]  Sei Watanabe,et al.  Research on Extended Expansion General-Purpose EngineTheoretical Analysis of Multiple Linkage System and Improvement of Thermal Efficiency , 2006 .

[2]  John B. Heywood,et al.  Internal combustion engine fundamentals , 1988 .

[3]  Yingru Zhao,et al.  Performance analysis and parametric optimum criteria of an irreversible Atkinson heat-engine , 2006 .

[4]  S. C. Blakey,et al.  A Design and Experimental Study of an Otto Atkinson Cycle Engine Using Late Intake Valve Closing , 1991 .

[5]  Shuhn-Shyurng Hou,et al.  Comparison of performances of air standard Atkinson and Otto cycles with heat transfer considerations , 2007 .

[6]  Mamoru Tomatsuri,et al.  Development of New 1.8-Liter Engine for Hybrid Vehicles , 2009 .

[7]  Zoran Filipi,et al.  FIRST AND SECOND LAW ANALYSES OF A NATURALLY ASPIRATED, MILLER CYCLE, SI ENGINE WITH LATE INTAKE VALVE CLOSURE , 1998 .

[8]  Ricardo Novella,et al.  Potential of Atkinson cycle combined with EGR for pollutant control in a HD diesel engine , 2009 .

[9]  Yiding Cao,et al.  Thermodynamic Cycles of Internal Combustion Engines for Increased Thermal Efficiency, Constant-Volume Combustion, Variable Compression Ratio, and Cold Start , 2007 .

[10]  Victor Gheorghiu,et al.  CO2-EMISSION REDUCTION BY MEANS OF ENHANCING THE THERMAL CONVERSION EFFICIENCY OF ICE CYCLES , 2010 .

[11]  Jean-Marc Zaccardi,et al.  Optimal Design for a Highly Downsized Gasoline Engine , 2009 .

[12]  J. M. Mallikarjuna,et al.  Theoretical and Experimental Investigations of Extended Expansion Concept for SI Engines , 2002 .

[13]  Seongeun Yu,et al.  Spark timing and fuel injection strategy for combustion stability on HEV powertrain , 2010 .