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

2014-01-1362

04/01/2014

Event
SAE 2014 World Congress & Exhibition
Authors Abstract
Content
Based 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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2014-01-1362
Pages
10
Citation
Zhang, Z., Zhao, F., Li, L., Wu, Z. et al., "Closed-loop Control of Low Temperature Combustion Employing Ion Current Detecting Technology," SAE Technical Paper 2014-01-1362, 2014, https://doi.org/10.4271/2014-01-1362.
Additional Details
Publisher
Published
Apr 1, 2014
Product Code
2014-01-1362
Content Type
Technical Paper
Language
English