Closed-loop Control of Low Temperature Combustion Employing Ion Current Detecting Technology Tongji Univ

Format:

Conference/Event

Author/Creator:

Zhang, Zhang, author.

Contributor:

Deng, Jun

Hu, Zongjie

Li, Liguang

Wu, Zhijun

Zhao, Fuquan

Conference Name:

SAE 2014 World Congress & Exhibition (2014-04-08 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2014

Summary:

AbstractBased on high EGR rate, the low temperature combustion (LTC) has been studied widely, of which the application range is more extensive than the homogeneous charge compression ignition (HCCI) and premixed charge compression ignition (PCCI). As the high EGR rate would influence the condition of intake charge, it would also affect the combustion process and the HC emissions, thus the combustion stability of LTC would be lower than tradition diesel combustion.In this study, an ion current detecting technology was employed to explore the ion current at different EGR rates. Meanwhile, the combustion parameters were also investigated, which included the in-cylinder pressure and heat release rate. The CA50 and CAI50 were adopted as the phases of combustion and ion current, which respectively represented the crank angle of mid-point for the integrated heat release and integrated ion current. Then the correlation between CA50 and CAI50 was analysed. Finally, a closed-loop control strategy for LTC was proposed, which was based on the ion current detecting technology.The experimental results showed that with the closed-loop control strategy, the combustion stability of LTC was improved, the power performance was enhanced, and the HC emissions were reduced

Notes:

Vendor supplied data

Publisher Number:

2014-01-1362

Access Restriction:

Restricted for use by site license