Switch Control of Sequential Supercharging for Diesel Engine&nbsp; Based on Exhaust Energy Regulation

ZHOU Wenjie; CHENG Jianghua; XING Weidong; SHI Lei; DENG Kangyao

doi:10.3969/j.issn.1001-2222.2020.06.001

Vehicle Engine ›› 2020, Vol. 0 ›› Issue (6) : 1-6. DOI: 10.3969/j.issn.1001-2222.2020.06.001

Switch Control of Sequential Supercharging for Diesel Engine Based on Exhaust Energy Regulation

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Abstract

In order to solve the large fluctuation of diesel engine speed caused by the transient change of exhaust energy in the switching process of diesel engine sequential supercharging system, a bypassvalve control method of transient exhaust energy was proposed so that the smooth control could be realized. The coupling simulation model of GT-Power/Simulink sequential supercharging was established and the influences of exhaust energy on sequential supercharging switch process, diesel and switch speed were studied. The simulation results show that the exhaust energy loss reduces by increasing the switching speed and using appropriate valve control method and the fluctuation amplitude of diesel engine speed decreases to 25 r/min.

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diesel engine / sequential supercharging / energy regulation / switch

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ZHOU Wenjie，CHENG Jianghua，XING Weidong，SHI Lei，DENG Kangyao. Switch Control of Sequential Supercharging for Diesel Engine Based on Exhaust Energy Regulation[J]. Vehicle Engine. 2020, 0(6): 1-6 https://doi.org/10.3969/j.issn.1001-2222.2020.06.001