Online Monitoring and Feedback Control of Ignition Timing Based on Ion Current Signal Phase in EGR Gasoline Engine
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- Zhu Denghao
- School of Automotive Studies, Tongji University
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- Li Liguang
- School of Automotive Studies, Tongji University Chinesisch-Deutsches Hochschulkolleg, Tongji University
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- Zhang Fuyuan
- School of Automotive Studies, Tongji University
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- Chao Yuedong
- School of Automotive Studies, Tongji University
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- Deng Jun
- School of Automotive Studies, Tongji University
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- Hu Zongjie
- School of Automotive Studies, Tongji University
Abstract
<p>Based on a 1.3L MPI turbocharged gasoline engine with high and low pressure EGR system, correlation between ion current signal phase and ignition timing under declared operating condition has been studied. The results show that higher EGR rate needs to cooperate more advanced ignition timing, which leads to advanced ion current signal phase. Both under high and low pressure EGR condition, correlation coefficient between ion current signal phase and ignition timing is over 0.7, including 75% experiment points is over 0.9, so ion current signal phase is able to estimate ignition timing. Base on this, an online monitoring and feedback control strategy of ignition timing is proposed, which is employed to record the times of actual ignition timing deviating from ideal ignition timing and adjust ignition timing. The average accuracy rate of online monitoring function is 97.2%. This strategy can help to judge whether the engine operates properly and avoid adverse consequences caused by inaccurate matching of ignition timing and EGR rate.</p>
Journal
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- The Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines
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The Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2017.9 (0), C306-, 2017
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282680859682432
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- NII Article ID
- 130006406506
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- ISSN
- 24242918
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed