Influence of fuel composition on combustion and emissions characteristics of natural gas/diesel RCCI engine

Amir Hasan Kakaee; Pourya Rahnama; Amin Paykani

doi:10.1016/j.jngse.2015.04.020

Influence of fuel composition on combustion and emissions characteristics of natural gas/diesel RCCI engine

Amir Hasan Kakaee, Pourya Rahnama, Amin Paykani

Research output: Contribution to journal › Article › peer-review

79 Citations (Scopus)

Abstract

The effects of natural gas composition and engine speed on combustion and emissions characteristics of an RCCI engine fuelled with natural gas/diesel at engine medium load of 9bar indicated mean effective pressure (IMEP) are studied. Natural gas with low reactivity is assumed to be inducted into the engine through the intake port, while diesel fuel with high reactivity is directly injected into the engine using a double injection strategy. The obtained numerical results are validated against available results in the literature. Two different compositions of natural gas (including pure methane) are taken into account to study RCCI combustion and emissions characteristics. It is shown that Wobbe number (WN) of gases and engine speed significantly affects RCCI engine combustion and emissions. The gas with higher WN displayed higher peak pressure, temperature and NO_x emissions, and lower unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions.

Original language	English
Pages (from-to)	58-65
Number of pages	8
Journal	Journal of Natural Gas Science and Engineering
Volume	25
DOIs	https://doi.org/10.1016/j.jngse.2015.04.020
Publication status	Published - 1 Jul 2015

Keywords

Emissions
Natural gas composition
RCCI engine
Speed
Wobbe number

Access to Document

10.1016/j.jngse.2015.04.020

Cite this

@article{ffedfeed5a374c2aa333205ba025e7ce,

title = "Influence of fuel composition on combustion and emissions characteristics of natural gas/diesel RCCI engine",

abstract = "The effects of natural gas composition and engine speed on combustion and emissions characteristics of an RCCI engine fuelled with natural gas/diesel at engine medium load of 9bar indicated mean effective pressure (IMEP) are studied. Natural gas with low reactivity is assumed to be inducted into the engine through the intake port, while diesel fuel with high reactivity is directly injected into the engine using a double injection strategy. The obtained numerical results are validated against available results in the literature. Two different compositions of natural gas (including pure methane) are taken into account to study RCCI combustion and emissions characteristics. It is shown that Wobbe number (WN) of gases and engine speed significantly affects RCCI engine combustion and emissions. The gas with higher WN displayed higher peak pressure, temperature and NOx emissions, and lower unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions.",

keywords = "Emissions, Natural gas composition, RCCI engine, Speed, Wobbe number",

author = "Kakaee, {Amir Hasan} and Pourya Rahnama and Amin Paykani",

year = "2015",

month = jul,

day = "1",

doi = "10.1016/j.jngse.2015.04.020",

language = "English",

volume = "25",

pages = "58--65",

journal = "Journal of Natural Gas Science and Engineering",

issn = "2949-9097",

publisher = "Elsevier",

}

TY - JOUR

T1 - Influence of fuel composition on combustion and emissions characteristics of natural gas/diesel RCCI engine

AU - Kakaee, Amir Hasan

AU - Rahnama, Pourya

AU - Paykani, Amin

PY - 2015/7/1

Y1 - 2015/7/1

N2 - The effects of natural gas composition and engine speed on combustion and emissions characteristics of an RCCI engine fuelled with natural gas/diesel at engine medium load of 9bar indicated mean effective pressure (IMEP) are studied. Natural gas with low reactivity is assumed to be inducted into the engine through the intake port, while diesel fuel with high reactivity is directly injected into the engine using a double injection strategy. The obtained numerical results are validated against available results in the literature. Two different compositions of natural gas (including pure methane) are taken into account to study RCCI combustion and emissions characteristics. It is shown that Wobbe number (WN) of gases and engine speed significantly affects RCCI engine combustion and emissions. The gas with higher WN displayed higher peak pressure, temperature and NOx emissions, and lower unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions.

AB - The effects of natural gas composition and engine speed on combustion and emissions characteristics of an RCCI engine fuelled with natural gas/diesel at engine medium load of 9bar indicated mean effective pressure (IMEP) are studied. Natural gas with low reactivity is assumed to be inducted into the engine through the intake port, while diesel fuel with high reactivity is directly injected into the engine using a double injection strategy. The obtained numerical results are validated against available results in the literature. Two different compositions of natural gas (including pure methane) are taken into account to study RCCI combustion and emissions characteristics. It is shown that Wobbe number (WN) of gases and engine speed significantly affects RCCI engine combustion and emissions. The gas with higher WN displayed higher peak pressure, temperature and NOx emissions, and lower unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions.

KW - Emissions

KW - Natural gas composition

KW - RCCI engine

KW - Speed

KW - Wobbe number

UR - http://www.scopus.com/inward/record.url?scp=84928656737&partnerID=8YFLogxK

U2 - 10.1016/j.jngse.2015.04.020

DO - 10.1016/j.jngse.2015.04.020

M3 - Article

AN - SCOPUS:84928656737

SN - 2949-9097

VL - 25

SP - 58

EP - 65

JO - Journal of Natural Gas Science and Engineering

JF - Journal of Natural Gas Science and Engineering

ER -

Influence of fuel composition on combustion and emissions characteristics of natural gas/diesel RCCI engine

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this