Title: A theoretical and experimental study on vehicle with exhaust heat recovery

Authors: Liang Zhu; Shuangfeng Wang; Kai Chen; Zhixin Zeng

Addresses: GAC Automotive Research and Development Center, Guangzhou, 511434, Guangdong, China; Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, Guangdong, China ' Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, Guangdong, China ' Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, Guangdong, China ' GAC Automotive Research and Development Center, Guangzhou, 511434, Guangdong, China

Abstract: The performance of the exhaust heat recovery system (EHRS) is analysed. First, an integrated vehicle model with the cabin heating system is established. A vehicle test is conducted to verify the simulation model and to assess the performance of the original system. Using the simulation model, the interaction between the EHRS, cooling system, cabin heating system and exhaust system is studied. Then the cooling system is improved aiming to reduce the fuel consumption and improve the system performance. The numerical results show that increasing the pump speed ratio can significantly improve the performance of low-temperature heating, and has little effect on fuel consumption. Adjusting the cooling circuit of the EHRS can effectively reduce fuel consumption and improve heating performance.

Keywords: integrated vehicle system model; exhaust heat recovery; cooling system; cabin heating system; exhaust system.

DOI: 10.1504/IJVD.2022.129164

International Journal of Vehicle Design, 2022 Vol.90 No.1/2/3/4, pp.42 - 68

Accepted: 12 Jan 2022
Published online: 27 Feb 2023 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article