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Closed-loop combust...
Closed-loop combustion phase control for multiple combustion modes by multiple injections in a compression ignition engine fueled by gasoline-diesel mixture
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- Fang, Cheng (författare)
- Lund University,Lunds universitet,Förbränningsmotorer,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Combustion Engines,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH,Beijing Computational Science Research Center,ECTEK Automotive Electronic Systems Co.
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- Ouyang, Minggao (författare)
- Tsinghua University
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- Tunestal, Per (författare)
- Lund University,Lunds universitet,Förbränningsprocesser KCFP,Annan verksamhet, LTH,Lunds Tekniska Högskola,Förbränningsmotorer,Institutionen för energivetenskaper,Institutioner vid LTH,The Competence Centre for Combustion Processes,Other operations, LTH,Faculty of Engineering, LTH,Combustion Engines,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Yang, Fuyuan (författare)
- Tsinghua University
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- Yang, Xiaofan (författare)
- Beijing Normal University
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- Engelska 10 s.
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Ingår i: Applied Energy. - : Elsevier BV. - 0306-2619. ; 231, s. 816-825
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Partially premixed combustion with low octane fuel aims to reduce NOx and soot emission simultaneously without fuel consumption penalty. Cylinder pressure based combustion phase control is an essential technology for partially premixed combustion. A novel closed-loop combustion phase control strategy for multiple combustion modes is proposed in the current study. The combustion modes are classified into three basic categories based on injection patterns and heat release stages: (1) with only one heat release stage; (2) with two separated heat release stages; (3) with two overlapped heat release stages. Crank angle when 50% fuel is consumed (CA50) is chosen as the combustion phase indicator for the first case. Start of combustion (SOC) of each heat release stage is the combustion phase indicator for the second case. Both SOC and CA50 are the combustion phase indicators for the third case. Each combustion phase is closed-loop controlled by a proportional–integral (PI) controller with the timing adjustments of the corresponding injection. The control strategy is verified under different operating conditions in a 1.9 L light duty diesel engine fueled by gasoline-diesel mixture (volumetric 70% gasoline, 30% diesel). The experimental results show that the control strategy is able to control the combustion phase, reduce cylinder to cylinder variations as well as cycle to cycle variations under the operating conditions with exhaust gas circulation (EGR) rates of 10% and 15%.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Closed-loop control
- Combustion mode
- Combustion phase
- Multiple injections
- Partially premixed combustion
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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