Study of a hybrid pneumatic-combustion engine under steady-state and transient conditions for transport application

Fang, Y., Lu, Y. , Yu, X., Su, L., Fan, Z., Huang, R. and Paul Roskilly, A. (2021) Study of a hybrid pneumatic-combustion engine under steady-state and transient conditions for transport application. International Journal of Engine Research, 22(2), pp. 528-539. (doi: 10.1177/1468087419860322)

Abstract

In this study, a new form of hybrid pneumatic combustion engine based on compressed air injection boosting is proposed. The hybrid pneumatic combustion engine regenerates the wasted energy during engine brake to improve the engine performance achieving better fuel economy. The mathematic model of the hybrid pneumatic combustion engine including a supercharged engine and the compressed air tank has been established. The steady-state and transient performance of the engine are analysed. Results show that the air injection boosting system can effectively improve the steady-state performance. Under the speed of 1900 r/min and 100% load, the engine torque and power can be increased from 1039 N m, 206.9 kW to 1057 N m, 210 kW by adopting air injection boosting with the injection pressure of 0.5 MPa. Effects of air injection parameters are also studied, showing that better performance can be achieved under higher air tank pressure and larger injection hole diameter. In addition, a transient analysis is completed under the speed of 1100 r/min. The result shows that when air injection boosting is used, the responding time of the engine to an instant load increase can be potentially reduced from 5.5 to 3.5 s under the injection pressure and duration of 0.5 MPa and 3 s. Meanwhile, the tank pressure has limited influence on the transient performance of the engine.

• Item Type: Articles
• Additional Information: he authors would like to thank the support from the National Natural Science Foundation of China (Grant nos 51476143 and 51806189) and from EPSRC through (EP/P001173/1) – Centre for Energy Systems Integration. The finical contribution from the NSFC-RS Joint Project under the grant number nos 5151101443 and IE/151256, China Postdoctoral Science Foundation under grant number 2018M640556 and from Zhejiang Province Postdoctoral Science Foundation under grant number ZJ20180099 are also highly acknowledged. The first author also would like to acknowledge the support from Funding Project for Young College Teachers of Shanghai under the grant number ZZslg16006.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Lu, Dr Yiji
• Authors: Fang, Y., Lu, Y., Yu, X., Su, L., Fan, Z., Huang, R., and Paul Roskilly, A.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: International Journal of Engine Research
• Publisher: SAGE Publications
• ISSN: 1468-0874
• ISSN (Online): 2041-3149
• Published Online: 01 July 2019
• Copyright Holders: Copyright © IMechE 2019
• First Published: First published in International Journal of Engine Research 22(2):528-539
• Publisher Policy: Reproduced in accordance with the publisher copyright policy