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Performance of Combustion and Emissions Characteristics of Ethanol Dual Injection Spark Ignition Engine

Carbon monoxide; Diesel engines; Direct injection; Efficiency; Ethanol fuels; Ignition; Nitric oxide; Speed; Combustion characteristics; Dual injections; Emission; Ethanol combustion; Ethanol dual combustion; Ignition engine; Injection ratio; Maximum brake torques; Spark-ignition engine; Spart ignit...

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Main Authors: Al-Muhsen N.F.O., Hong G., Ismail F.B.
Other Authors: 57197748656
Format: Article
Published: Universiti Malaysia Pahang 2023
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spelling my.uniten.dspace-264872023-05-29T17:11:06Z Performance of Combustion and Emissions Characteristics of Ethanol Dual Injection Spark Ignition Engine Al-Muhsen N.F.O. Hong G. Ismail F.B. 57197748656 7203031502 58027086700 Carbon monoxide; Diesel engines; Direct injection; Efficiency; Ethanol fuels; Ignition; Nitric oxide; Speed; Combustion characteristics; Dual injections; Emission; Ethanol combustion; Ethanol dual combustion; Ignition engine; Injection ratio; Maximum brake torques; Spark-ignition engine; Spart ignition engine; Ethanol Ethanol dual injection (DualEI) is a new technology to maximise the benefits of ethanol fuel to the spark-ignition engine. In this study, the combustion and emissions characteristics in a DualEI spark-ignition engine with a variation of the direct injection (DI) ratio and engine speed were experimentally investigated. The volume ratio of DI was varied from 0% (DI0%) to 100% (DI100%), and two engine speeds of 3500 and 4000 RPM were tested. The spark timing for maximum brake torque (MBT) was first determined, and then the results of the effect of DI ratio on the engine performance at the MBT conditions were discussed and analysed. The results showed that the MBT timing for the DI and spark timings were 330 and 30 CAD bTDC, respectively. At the MBT timing, the indicated mean effective pressure slightly increased from 0.47 to 0.50 MPa when the DI ratio increased from DI0% to DI100%. However, the maximum combustion pressure significantly decreased by 8.32%, and volumetric efficiency increased by 4.04%. This was attributed to the reduced combustion temperature due to the cooling effect of ethanol fuel enhanced by the DI strategy. The indicated specific carbon monoxide and hydrocarbons significantly increased due to poor mixture quality caused by fuel impingement associated with the overcooling effect. However, the indicated specific nitric oxides significantly decreased due to the temperature reduction inside the combustion chamber. Results showed the potential of DualEI to increase the compression ratio and consequently increase the engine thermal efficiency without the risk of engine knock � The Authors 2021. Published by Penerbit UMP. This is an open access article under the CC BY license. Final 2023-05-29T09:11:05Z 2023-05-29T09:11:05Z 2021 Article 10.15282/IJAME.18.3.2021.20.0697 2-s2.0-85117966482 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85117966482&doi=10.15282%2fIJAME.18.3.2021.20.0697&partnerID=40&md5=37bdf00be2b20b392a9e9ca1a553fae8 https://irepository.uniten.edu.my/handle/123456789/26487 18 3 9082 9093 Universiti Malaysia Pahang Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Carbon monoxide; Diesel engines; Direct injection; Efficiency; Ethanol fuels; Ignition; Nitric oxide; Speed; Combustion characteristics; Dual injections; Emission; Ethanol combustion; Ethanol dual combustion; Ignition engine; Injection ratio; Maximum brake torques; Spark-ignition engine; Spart ignition engine; Ethanol
author2 57197748656
author_facet 57197748656
Al-Muhsen N.F.O.
Hong G.
Ismail F.B.
format Article
author Al-Muhsen N.F.O.
Hong G.
Ismail F.B.
spellingShingle Al-Muhsen N.F.O.
Hong G.
Ismail F.B.
Performance of Combustion and Emissions Characteristics of Ethanol Dual Injection Spark Ignition Engine
author_sort Al-Muhsen N.F.O.
title Performance of Combustion and Emissions Characteristics of Ethanol Dual Injection Spark Ignition Engine
title_short Performance of Combustion and Emissions Characteristics of Ethanol Dual Injection Spark Ignition Engine
title_full Performance of Combustion and Emissions Characteristics of Ethanol Dual Injection Spark Ignition Engine
title_fullStr Performance of Combustion and Emissions Characteristics of Ethanol Dual Injection Spark Ignition Engine
title_full_unstemmed Performance of Combustion and Emissions Characteristics of Ethanol Dual Injection Spark Ignition Engine
title_sort performance of combustion and emissions characteristics of ethanol dual injection spark ignition engine
publisher Universiti Malaysia Pahang
publishDate 2023
_version_ 1806425958676168704
score 13.222552

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