The objective of this study is to numerically investigate the effect of cryogenic intake air temperature on the in-cylinder temperature and formation of exhaust emissions in a CI engine. The experimental setup was consisted of a single-cylinder diesel engine. The intake air temperature was varied from 18 °C to 40 °C, which was controlled by cooler and heater. Submodels were applied for the simulations of physical/chemical phenomenon of spray and combustion behaviors. The intake air temperature in numerical condition was varied from −18 °C to 18 °C. The numerical results were validated with experimental results for the reliability of this work. The results of this work were compared in terms of cylinder pressure, rate of heat release (ROHR), indicated specific nitrogen oxide (ISNO), indicated specific carbon monoxide (ISCO), ignition delay, in-cylinder temperature distributions, equivalence ratio distributions, NO mass fraction, and CO mass fraction. When the intake air temperature was decreased in steps of 9 °C, the cylinder temperature and cylinder pressure were decreased in steps of about 14.5 °C and 0.05 MPa, respectively. In all cases, the area where the NO formed in the cylinder was identified with the area of the high equivalence ratio and temperature in the cylinder. The amount of CO generation shows the similar distributions in the cylinder according to the intake air temperature conditions. However, the oxidation rate of formed CO under the low intake air temperature was lower than those of the high intake air temperature.
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September 2019
Research-Article
Effect of Cryogenic Intake Air Temperature on the In-Cylinder Temperature and Formation of Exhaust Emissions in a Compression Ignition Engine
Se Hun Min,
Se Hun Min
Graduate School of Mechanical Engineering,
Kongju National University,
1223-24, Cheonan-daero, Seobuk-gu,
Cheonan-si,
Chungcheongnam-do 31080, South Korea
e-mail: shmin@smail.kongju.ac.kr
Kongju National University,
1223-24, Cheonan-daero, Seobuk-gu,
Cheonan-si,
Chungcheongnam-do 31080, South Korea
e-mail: shmin@smail.kongju.ac.kr
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Hyun Kyu Suh,
Hyun Kyu Suh
Division of Mechanical and
Automotive Engineering,
Kongju National University,
1223-24, Cheonan-daero, Seobuk-gu,
Cheonan-si,
Chungcheongnam-do 31080, South Korea
e-mail: hksuh@kongju.ac.kr
Automotive Engineering,
Kongju National University,
1223-24, Cheonan-daero, Seobuk-gu,
Cheonan-si,
Chungcheongnam-do 31080, South Korea
e-mail: hksuh@kongju.ac.kr
1Corresponding author.
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Seongin Jo,
Seongin Jo
Department of Mechanical-Automotive
Engineering,
Graduate School of Chonnam
National University,
77, Yongbong-ro, Buk-gu,
Gwangju 61186, South Korea
e-mail: tjddls93@nate.com
Engineering,
Graduate School of Chonnam
National University,
77, Yongbong-ro, Buk-gu,
Gwangju 61186, South Korea
e-mail: tjddls93@nate.com
Search for other works by this author on:
Suhan Park
Suhan Park
School of Mechanical Engineering,
Chonnam National University,
77, Yongbong-ro, Buk-gu,
Gwangju 61186, South Korea
e-mail: suhanpark@jnu.ac.kr
Chonnam National University,
77, Yongbong-ro, Buk-gu,
Gwangju 61186, South Korea
e-mail: suhanpark@jnu.ac.kr
Search for other works by this author on:
Se Hun Min
Graduate School of Mechanical Engineering,
Kongju National University,
1223-24, Cheonan-daero, Seobuk-gu,
Cheonan-si,
Chungcheongnam-do 31080, South Korea
e-mail: shmin@smail.kongju.ac.kr
Kongju National University,
1223-24, Cheonan-daero, Seobuk-gu,
Cheonan-si,
Chungcheongnam-do 31080, South Korea
e-mail: shmin@smail.kongju.ac.kr
Hyun Kyu Suh
Division of Mechanical and
Automotive Engineering,
Kongju National University,
1223-24, Cheonan-daero, Seobuk-gu,
Cheonan-si,
Chungcheongnam-do 31080, South Korea
e-mail: hksuh@kongju.ac.kr
Automotive Engineering,
Kongju National University,
1223-24, Cheonan-daero, Seobuk-gu,
Cheonan-si,
Chungcheongnam-do 31080, South Korea
e-mail: hksuh@kongju.ac.kr
Seongin Jo
Department of Mechanical-Automotive
Engineering,
Graduate School of Chonnam
National University,
77, Yongbong-ro, Buk-gu,
Gwangju 61186, South Korea
e-mail: tjddls93@nate.com
Engineering,
Graduate School of Chonnam
National University,
77, Yongbong-ro, Buk-gu,
Gwangju 61186, South Korea
e-mail: tjddls93@nate.com
Suhan Park
School of Mechanical Engineering,
Chonnam National University,
77, Yongbong-ro, Buk-gu,
Gwangju 61186, South Korea
e-mail: suhanpark@jnu.ac.kr
Chonnam National University,
77, Yongbong-ro, Buk-gu,
Gwangju 61186, South Korea
e-mail: suhanpark@jnu.ac.kr
1Corresponding author.
Manuscript received November 27, 2018; final manuscript received June 13, 2019; published online August 2, 2019. Assoc. Editor: William Northrop.
J. Eng. Gas Turbines Power. Sep 2019, 141(9): 091022 (8 pages)
Published Online: August 2, 2019
Article history
Received:
November 27, 2018
Revised:
June 13, 2019
Citation
Min, S. H., Suh, H. K., Jo, S., and Park, S. (August 2, 2019). "Effect of Cryogenic Intake Air Temperature on the In-Cylinder Temperature and Formation of Exhaust Emissions in a Compression Ignition Engine." ASME. J. Eng. Gas Turbines Power. September 2019; 141(9): 091022. https://doi.org/10.1115/1.4044061
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