The successful utilization of a diesel particulate filter (DPF) to reduce particulate matter (PM) in a passenger car diesel engine necessitates a periodic regeneration of the DPF catalyst without deterioration of the drivability and emission control performance. For successful active DPF regeneration, the exhaust gas temperature should be over 500 °C to oxidize the soot loaded in the DPF. Previous research increased the exhaust gas temperature by applying early and late post fuel injection with a look-up table (LUT) based feedforward control implemented into the engine management system (EMS). However, this method requires enormous calibration work to find the optimal timing and quantity of the main, early, and late post fuel injection with less certainty of accurate torque control. To address this issue, we propose a cylinder pressure based multiple fuel injection (MFI) control method for active DPF regeneration. The feedback control of the indicated mean effective pressure (IMEP), lambda, and DPF upstream temperature was applied to precisely control the injection quantity of the main, early, and late post fuel injection. To determine their fuel injection timings, a mass fraction burned 60% after location of the rate of heat release maximum (MFB60aLoROHRmax) was proposed based on the cylinder pressure information. The proposed control method was implemented in an in-house EMS and validated at several engine operating conditions. During the regeneration period, the exhaust gas temperature tracked the desired temperature, and the engine torque fluctuation was minimized with minimal PM and NOx emissions.
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August 2016
Research-Article
Cylinder Pressure Information-Based Postinjection Timing Control for Aftertreatment System Regeneration in a Diesel Engine—Part II: Active Diesel Particulate Filter Regeneration
Hyunjun Lee,
Hyunjun Lee
Department of Automotive Engineering,
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu,
Seoul 133-791, South Korea
e-mail: thomasjr@hanyang.ac.kr
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu,
Seoul 133-791, South Korea
e-mail: thomasjr@hanyang.ac.kr
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Jaesik Shin,
Jaesik Shin
Department of Mechanical and
Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: sin7807@kmu.ac.kr
Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: sin7807@kmu.ac.kr
Search for other works by this author on:
Manbae Han,
Manbae Han
Department of Mechanical and
Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: mbhan2002@kmu.ac.kr
Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: mbhan2002@kmu.ac.kr
Search for other works by this author on:
Myoungho Sunwoo
Myoungho Sunwoo
Department of Automotive Engineering,
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu,
Seoul 133-791, South Korea
e-mail: msunwoo@hanyang.ac.kr
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu,
Seoul 133-791, South Korea
e-mail: msunwoo@hanyang.ac.kr
Search for other works by this author on:
Hyunjun Lee
Department of Automotive Engineering,
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu,
Seoul 133-791, South Korea
e-mail: thomasjr@hanyang.ac.kr
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu,
Seoul 133-791, South Korea
e-mail: thomasjr@hanyang.ac.kr
Jaesik Shin
Department of Mechanical and
Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: sin7807@kmu.ac.kr
Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: sin7807@kmu.ac.kr
Manbae Han
Department of Mechanical and
Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: mbhan2002@kmu.ac.kr
Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: mbhan2002@kmu.ac.kr
Myoungho Sunwoo
Department of Automotive Engineering,
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu,
Seoul 133-791, South Korea
e-mail: msunwoo@hanyang.ac.kr
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu,
Seoul 133-791, South Korea
e-mail: msunwoo@hanyang.ac.kr
1Corresponding author.
Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received December 31, 2015; final manuscript received January 10, 2016; published online March 15, 2016. Editor: David Wisler.
J. Eng. Gas Turbines Power. Aug 2016, 138(8): 081508 (12 pages)
Published Online: March 15, 2016
Article history
Received:
December 31, 2015
Revised:
January 10, 2016
Citation
Lee, H., Shin, J., Han, M., and Sunwoo, M. (March 15, 2016). "Cylinder Pressure Information-Based Postinjection Timing Control for Aftertreatment System Regeneration in a Diesel Engine—Part II: Active Diesel Particulate Filter Regeneration." ASME. J. Eng. Gas Turbines Power. August 2016; 138(8): 081508. https://doi.org/10.1115/1.4032541
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