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A Strategy to Control the Turbocharger Energy of a Diesel Engine at Different Altitudes

Jianghua Cheng1,2, Xiaojian Li2, Lei Shi3,*, Kangbo Lu3, Ling Leng3

1 National Key Laboratory of Diesel Engine Turbocharging Technology, China North Engine Research Institute, Tianjin, 300400, China
2 School of Mechanical Engineering, Tianjin University, Tianjin, 300073, China
3 Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200240, China

* Corresponding Author: Lei Shi. Email: email

Fluid Dynamics & Materials Processing 2023, 19(4), 959-975. https://doi.org/10.32604/fdmp.2023.023687

Abstract

Power deterioration is a major problem for diesel engines operating at high altitudes. This problem stems from the limited availability of turbocharger energy, which is not enough to increase the boost pressure to the required level. In this study, a control strategy is introduced in order to achieve engine power recovery at different altitudes. It is shown that as the altitude increases from 0 to 4500 m, the required boost pressure ratio increases from 2.4 to 4.3. The needed turbocharger energy should be increased accordingly by 240%, and the TCC (turbine characterization coefficient) should be adjusted within wide ranges. A 12% decrease in the TCC can lead to a rise of the intake air pressure, which can compensate the pressure decrease due to a 1000 m altitude increase. The fluctuation range of boost pressure was within 14.5 kPa for variations in altitude from 0 to 4500 m.

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Cite This Article

Cheng, J., Li, X., Shi, L., Lu, K., Leng, L. (2023). A Strategy to Control the Turbocharger Energy of a Diesel Engine at Different Altitudes. FDMP-Fluid Dynamics & Materials Processing, 19(4), 959–975. https://doi.org/10.32604/fdmp.2023.023687



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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