Performance and NOx emissions of a biogas-fueled turbocharged internal combustion engine

Choongsoo Jung, Jungsoo Park, Soonho Song

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The performance and NOx (nitrous oxide) emissions of a biogas-fueled turbocharged internal combustion engine were investigated using one-dimensional cycle simulation. Analyses were carried out using the design of experiment method, and the results were verified by comparison with experimentally measured data. The combustion behaviors were improved as the CH4 content in the biogas increased. The brake power, brake thermal efficiency, and NOx emissions increased as the CH4 content or the boost pressure increased. Appropriate boost pressures to produce the same brake power at a given relative air/fuel ratio of 1.1 without boost were determined for each relative air/fuel ratio or each biogas composition considering brake power. In general, the lean operation limit was extended up to a relative air/fuel ratio of 1.5 with various biogas compositions and up to a relative air/fuel ratio of 1.7 for CH4:CO2 volume ratios of 65%:35% and 70%:30% without knocking. The maximum brake thermal efficiency was 35.9%, which was observed with a relative air/fuel ratio of 1.7 and a boost pressure of 1.44 bar at CH4:CO2 = 70%:30%. The NOx emissions were reduced by more than 90% via a reduction in the combustion temperature, which was achieved as a result of the lean combustion.

Original languageEnglish
Pages (from-to)186-195
Number of pages10
JournalEnergy
Volume86
DOIs
Publication statusPublished - 2015 Jun 15

Fingerprint

Biogas
Internal combustion engines
Brakes
Oxides
Air
Chemical analysis
Design of experiments
Temperature
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

@article{179b0550402140ebb12af2c0c148e81a,
title = "Performance and NOx emissions of a biogas-fueled turbocharged internal combustion engine",
abstract = "The performance and NOx (nitrous oxide) emissions of a biogas-fueled turbocharged internal combustion engine were investigated using one-dimensional cycle simulation. Analyses were carried out using the design of experiment method, and the results were verified by comparison with experimentally measured data. The combustion behaviors were improved as the CH4 content in the biogas increased. The brake power, brake thermal efficiency, and NOx emissions increased as the CH4 content or the boost pressure increased. Appropriate boost pressures to produce the same brake power at a given relative air/fuel ratio of 1.1 without boost were determined for each relative air/fuel ratio or each biogas composition considering brake power. In general, the lean operation limit was extended up to a relative air/fuel ratio of 1.5 with various biogas compositions and up to a relative air/fuel ratio of 1.7 for CH4:CO2 volume ratios of 65{\%}:35{\%} and 70{\%}:30{\%} without knocking. The maximum brake thermal efficiency was 35.9{\%}, which was observed with a relative air/fuel ratio of 1.7 and a boost pressure of 1.44 bar at CH4:CO2 = 70{\%}:30{\%}. The NOx emissions were reduced by more than 90{\%} via a reduction in the combustion temperature, which was achieved as a result of the lean combustion.",
author = "Choongsoo Jung and Jungsoo Park and Soonho Song",
year = "2015",
month = "6",
day = "15",
doi = "10.1016/j.energy.2015.03.122",
language = "English",
volume = "86",
pages = "186--195",
journal = "Energy",
issn = "0360-5442",
publisher = "Elsevier Limited",

}

Performance and NOx emissions of a biogas-fueled turbocharged internal combustion engine. / Jung, Choongsoo; Park, Jungsoo; Song, Soonho.

In: Energy, Vol. 86, 15.06.2015, p. 186-195.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Performance and NOx emissions of a biogas-fueled turbocharged internal combustion engine

AU - Jung, Choongsoo

AU - Park, Jungsoo

AU - Song, Soonho

PY - 2015/6/15

Y1 - 2015/6/15

N2 - The performance and NOx (nitrous oxide) emissions of a biogas-fueled turbocharged internal combustion engine were investigated using one-dimensional cycle simulation. Analyses were carried out using the design of experiment method, and the results were verified by comparison with experimentally measured data. The combustion behaviors were improved as the CH4 content in the biogas increased. The brake power, brake thermal efficiency, and NOx emissions increased as the CH4 content or the boost pressure increased. Appropriate boost pressures to produce the same brake power at a given relative air/fuel ratio of 1.1 without boost were determined for each relative air/fuel ratio or each biogas composition considering brake power. In general, the lean operation limit was extended up to a relative air/fuel ratio of 1.5 with various biogas compositions and up to a relative air/fuel ratio of 1.7 for CH4:CO2 volume ratios of 65%:35% and 70%:30% without knocking. The maximum brake thermal efficiency was 35.9%, which was observed with a relative air/fuel ratio of 1.7 and a boost pressure of 1.44 bar at CH4:CO2 = 70%:30%. The NOx emissions were reduced by more than 90% via a reduction in the combustion temperature, which was achieved as a result of the lean combustion.

AB - The performance and NOx (nitrous oxide) emissions of a biogas-fueled turbocharged internal combustion engine were investigated using one-dimensional cycle simulation. Analyses were carried out using the design of experiment method, and the results were verified by comparison with experimentally measured data. The combustion behaviors were improved as the CH4 content in the biogas increased. The brake power, brake thermal efficiency, and NOx emissions increased as the CH4 content or the boost pressure increased. Appropriate boost pressures to produce the same brake power at a given relative air/fuel ratio of 1.1 without boost were determined for each relative air/fuel ratio or each biogas composition considering brake power. In general, the lean operation limit was extended up to a relative air/fuel ratio of 1.5 with various biogas compositions and up to a relative air/fuel ratio of 1.7 for CH4:CO2 volume ratios of 65%:35% and 70%:30% without knocking. The maximum brake thermal efficiency was 35.9%, which was observed with a relative air/fuel ratio of 1.7 and a boost pressure of 1.44 bar at CH4:CO2 = 70%:30%. The NOx emissions were reduced by more than 90% via a reduction in the combustion temperature, which was achieved as a result of the lean combustion.

UR - http://www.scopus.com/inward/record.url?scp=84931574892&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84931574892&partnerID=8YFLogxK

U2 - 10.1016/j.energy.2015.03.122

DO - 10.1016/j.energy.2015.03.122

M3 - Article

AN - SCOPUS:84931574892

VL - 86

SP - 186

EP - 195

JO - Energy

JF - Energy

SN - 0360-5442

ER -