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One Better Model of Vehicle Turbocharged Diesel Engine than VNT Turbo
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 01, 2014 by SAE International in United States
Annotation ability available
In the internal combustion engine, about 25%-40% of the energy released by burned fuel is taken away by the exhaust gas. The part of the usable energy in the exhaust can be used in the turbocharged engine. So, at present, turbocharged diesel engine hasn't made full use of exhaust gas energy.
The authors propose a model of the 4-stroke turbocharged diesel engine of split exhausting system. Adding a rapidly on-and-off exhaust control valve between exhaust passage and manifold in the 4-stroke turbocharged diesel engine can improve the utilization rate of the usable energy in the exhaust.
By utilizing the mean effective pressure (MEP), this paper is to calculate the maximum usable energy, the energy provided by exhaust and the energy required by intake. The results gets that the new type of exhausting system can help engine to increase usage rate of the exhaust gas energy to around 20% at the rated condition compared to the existing vehicle diesel engines with VNT. In a word, the new model can decrease fuel consumption by 5% than VNT turbo at the rated condition.
Compared to VNT turbo, the optimized new model can lower fuel consumption not only at the rated condition, but at the max torque condition as well. It can decrease fuel consumption by 6% at the rated condition and can decrease fuel consumption by 2.5% at the max torque condition approximately.
CitationXie, G., Shi, L., and Xie, X., "One Better Model of Vehicle Turbocharged Diesel Engine than VNT Turbo," SAE Technical Paper 2014-01-1644, 2014, https://doi.org/10.4271/2014-01-1644.
- Zener , K. Turbocharging and Match of Combustion Engine-Theories, Calculations and Cases Beijing National Defense Industry Press 07 1982
- Deming Jiang Turbocharging of Combustion Engine Beijing China Machine Press 10 1986
- Daxin Zhu Turbocharging and Turbocharging Diesel Engine Beijing China Machine Press 06 1988
- Challen Bernard , Baranescu Rodica Diesel Engine Reference Book Oxford Auckland Boston Johannesburg Melbourne New Delhi 1994
- Hongzhong Gu and Jiangchuan Wu Optimization of Turbocharging and Performance of Diesel Engine Shanghai Shanghai Jiaotong University Press 11 1989
- Hongzhong Gu Study on the Performance of Turbocharging Diesel Engine Shanghai Shanghai Jiaotong University Press 05 1998
- Hiereth Hermann and Prenninger Peter Charging the Internal Combustion Engine Springer Wien NewYork 2007
- Guohua Xie The Revolving Valve of Intake or Exhaust System of the Internal Combustion Engine Chinese Patent, 100449120C [P] 07 01 2009
- Guohua Xie The Split Exhaust Device of the Internal Combustion Engine Chinese Patent, 100482927C [P] 29 04 2009
- Mollenhauer Klaus and Tschoeke Helmut Handbook of Diesel Engines Springer-Verlag Berlin Heidelberg 2010
- Guohua Xie and Xiaoyu Xie A New Sequential Turbocharging System CIMAC Congress 2013, Shanghai Paper No. 334
- Xiaoyu Xie and Guohua Xie High Turbocharged Four Stroke Diesel Engine Performance is Further Improved - Split Turbocharged Exhausted System CIMAC Congress 2013, Shanghai Paper No. 338