Extension of PREMIER combustion operation range using split micro pilot fuel injection in a dual fuel natural gas compression ignition engine: A performance-based and visual investigation

Cagdas Aksu, Nobuyuki Kawahara, Kazuya Tsuboi, Morio Kondo, Eiji Tomita

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The effects of split pilot fuel injection on engine performance and PREmixed Mixture Ignition in the End Gas Region (PREMIER) combustion characteristics were investigated in a single-cylinder dual-fuel natural gas engine ignited with diesel fuel. In particular, the effect of second spray timing on combustion mode was examined. PREMIER combustion was observed in a wider range of operating conditions with split injection strategy compared to single injection strategy. We determined that it was possible to both decelerate heat release and suppress knocking to PREMIER combustion, and accelerate heat release and promote normal combustion to PREMIER combustion, with suitable second injection timing. The maximum of thermal efficiency of PREMIER combustion operation with split injection was close to the results obtained with knocking operation. In-cylinder images showed that split injection strategy advances or retards the progress of combustion by controlling the size and rate of growth of flame kernels, depending on the timing of the second injection. The combustion progress is earlier when the pilot fuel delivered during the first injection autoignites during the second injection. Kernel growth and the final size were adversely affected when the second injection was initiated after pilot fuel autoignition.

Original languageEnglish
Pages (from-to)243-253
Number of pages11
JournalFuel
Volume185
DOIs
Publication statusPublished - Dec 1 2016

Fingerprint

Fuel injection
Ignition
Natural gas
Compaction
Gases
Engines
Engine cylinders
Gas engines
Diesel fuels

Keywords

  • Dual fuel combustion
  • Micro pilot fuel injection
  • Natural gas
  • PREMIER combustion
  • Split injection
  • Visualization

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Chemical Engineering(all)
  • Organic Chemistry

Cite this

@article{11db9d872a94491ca24cab62b2f2757b,
title = "Extension of PREMIER combustion operation range using split micro pilot fuel injection in a dual fuel natural gas compression ignition engine: A performance-based and visual investigation",
abstract = "The effects of split pilot fuel injection on engine performance and PREmixed Mixture Ignition in the End Gas Region (PREMIER) combustion characteristics were investigated in a single-cylinder dual-fuel natural gas engine ignited with diesel fuel. In particular, the effect of second spray timing on combustion mode was examined. PREMIER combustion was observed in a wider range of operating conditions with split injection strategy compared to single injection strategy. We determined that it was possible to both decelerate heat release and suppress knocking to PREMIER combustion, and accelerate heat release and promote normal combustion to PREMIER combustion, with suitable second injection timing. The maximum of thermal efficiency of PREMIER combustion operation with split injection was close to the results obtained with knocking operation. In-cylinder images showed that split injection strategy advances or retards the progress of combustion by controlling the size and rate of growth of flame kernels, depending on the timing of the second injection. The combustion progress is earlier when the pilot fuel delivered during the first injection autoignites during the second injection. Kernel growth and the final size were adversely affected when the second injection was initiated after pilot fuel autoignition.",
keywords = "Dual fuel combustion, Micro pilot fuel injection, Natural gas, PREMIER combustion, Split injection, Visualization",
author = "Cagdas Aksu and Nobuyuki Kawahara and Kazuya Tsuboi and Morio Kondo and Eiji Tomita",
year = "2016",
month = "12",
day = "1",
doi = "10.1016/j.fuel.2016.07.120",
language = "English",
volume = "185",
pages = "243--253",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Extension of PREMIER combustion operation range using split micro pilot fuel injection in a dual fuel natural gas compression ignition engine

T2 - A performance-based and visual investigation

AU - Aksu, Cagdas

AU - Kawahara, Nobuyuki

AU - Tsuboi, Kazuya

AU - Kondo, Morio

AU - Tomita, Eiji

PY - 2016/12/1

Y1 - 2016/12/1

N2 - The effects of split pilot fuel injection on engine performance and PREmixed Mixture Ignition in the End Gas Region (PREMIER) combustion characteristics were investigated in a single-cylinder dual-fuel natural gas engine ignited with diesel fuel. In particular, the effect of second spray timing on combustion mode was examined. PREMIER combustion was observed in a wider range of operating conditions with split injection strategy compared to single injection strategy. We determined that it was possible to both decelerate heat release and suppress knocking to PREMIER combustion, and accelerate heat release and promote normal combustion to PREMIER combustion, with suitable second injection timing. The maximum of thermal efficiency of PREMIER combustion operation with split injection was close to the results obtained with knocking operation. In-cylinder images showed that split injection strategy advances or retards the progress of combustion by controlling the size and rate of growth of flame kernels, depending on the timing of the second injection. The combustion progress is earlier when the pilot fuel delivered during the first injection autoignites during the second injection. Kernel growth and the final size were adversely affected when the second injection was initiated after pilot fuel autoignition.

AB - The effects of split pilot fuel injection on engine performance and PREmixed Mixture Ignition in the End Gas Region (PREMIER) combustion characteristics were investigated in a single-cylinder dual-fuel natural gas engine ignited with diesel fuel. In particular, the effect of second spray timing on combustion mode was examined. PREMIER combustion was observed in a wider range of operating conditions with split injection strategy compared to single injection strategy. We determined that it was possible to both decelerate heat release and suppress knocking to PREMIER combustion, and accelerate heat release and promote normal combustion to PREMIER combustion, with suitable second injection timing. The maximum of thermal efficiency of PREMIER combustion operation with split injection was close to the results obtained with knocking operation. In-cylinder images showed that split injection strategy advances or retards the progress of combustion by controlling the size and rate of growth of flame kernels, depending on the timing of the second injection. The combustion progress is earlier when the pilot fuel delivered during the first injection autoignites during the second injection. Kernel growth and the final size were adversely affected when the second injection was initiated after pilot fuel autoignition.

KW - Dual fuel combustion

KW - Micro pilot fuel injection

KW - Natural gas

KW - PREMIER combustion

KW - Split injection

KW - Visualization

UR - http://www.scopus.com/inward/record.url?scp=84980351939&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84980351939&partnerID=8YFLogxK

U2 - 10.1016/j.fuel.2016.07.120

DO - 10.1016/j.fuel.2016.07.120

M3 - Article

AN - SCOPUS:84980351939

VL - 185

SP - 243

EP - 253

JO - Fuel

JF - Fuel

SN - 0016-2361

ER -