One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas

Environmental improvement and energy issues are recently becoming one of the worldwide concerns due to the increasing demand for petroleum usage especially from the automotive sector. This situation had lead to encounter for a new technology and reliable alternative fuel. A potential alternati...

Full description

Saved in:

Bibliographic Details
Main Author:	Ismail, Muhammad Yusri
Format:	Thesis
Language:	English English English
Published:	2014
Subjects:	TP Chemical technology TP751-762 Gas industry
Online Access:	http://eprints.uthm.edu.my/1591/2/24p%20MUHAMMAD%20YUSRI%20ISMAIL.pdf http://eprints.uthm.edu.my/1591/1/MUHAMMAD%20YUSRI%20ISMAIL%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1591/3/MUHAMMAD%20YUSRI%20ISMAIL%20WATERMARK.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uthm-ep.1591
record_format	uketd_dc
spelling	my-uthm-ep.15912021-10-03T08:06:42Z One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas 2014-08 Ismail, Muhammad Yusri TP Chemical technology TP751-762 Gas industry Environmental improvement and energy issues are recently becoming one of the worldwide concerns due to the increasing demand for petroleum usage especially from the automotive sector. This situation had lead to encounter for a new technology and reliable alternative fuel. A potential alternative fuel for compression ignition (C.I.) engine is the compressed natural gas (CNG). For C.I. engines to operate using CNG, or to be converted as a retrofitted CNG engine, further modifications are required. Previous works reported loss in brake power (BP) and increase in hydrocarbon (HC) emission for C.I. engine retrofitted with CNG fuelling. Analysis of performance and exhaust emissions characteristics for CNG retrofitted engine through experimental analysis requires high cost and very time consuming. Thus, a One –Dimensional simulation software, was introduced in this study to reduce the experimental process and setup. In this study a medium duty 4.3L, 4- cylinder, 4-stroke retrofitted compression ignition engine (RE) model were used in this simulation work over various operational conditions at low engine speed. At the beginning of this study, the model was first compared with a medium duty 4.3L, 4- cylinder, 4-stroke C.I. engine (DE) in order to predict the engine model capabilities running with different fuel types at low speed condition. The most significant finding in this simulation configuration is the RE model was able to reduce the fuel consumption (BSFC) and experience lower; brake power (BP), brake torque (BT) and brake thermal efficiency (BTE) by 18.1%, 30.3%, 30.7%, and 14.6% respectively. For emissions results the model generated higher unburned hydrocarbon emissions (HC) and lower; oxides of nitrogen (NOx), carbon dioxides (CO2) and carbon monoxides (CO) by 99%, 60.2%, 56.4% and 36.1% respectively. The model also had been tested at various air-fuel ratio (AFR) condition varies from 15 (rich), 17.2 (stoichiometric) and 19 (lean) condition. Finally the comparison between the simulation model and experimental engine results for performance and emissions characteristics at low engine speed are presented, and it is confirmed that the result in this study able to produce a roughly similar trend. 2014-08 Thesis http://eprints.uthm.edu.my/1591/ http://eprints.uthm.edu.my/1591/2/24p%20MUHAMMAD%20YUSRI%20ISMAIL.pdf text en public http://eprints.uthm.edu.my/1591/1/MUHAMMAD%20YUSRI%20ISMAIL%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/1591/3/MUHAMMAD%20YUSRI%20ISMAIL%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Mekanikal dan Pembuatan
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TP Chemical technology TP751-762 Gas industry
spellingShingle	TP Chemical technology TP751-762 Gas industry Ismail, Muhammad Yusri One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas
description	Environmental improvement and energy issues are recently becoming one of the worldwide concerns due to the increasing demand for petroleum usage especially from the automotive sector. This situation had lead to encounter for a new technology and reliable alternative fuel. A potential alternative fuel for compression ignition (C.I.) engine is the compressed natural gas (CNG). For C.I. engines to operate using CNG, or to be converted as a retrofitted CNG engine, further modifications are required. Previous works reported loss in brake power (BP) and increase in hydrocarbon (HC) emission for C.I. engine retrofitted with CNG fuelling. Analysis of performance and exhaust emissions characteristics for CNG retrofitted engine through experimental analysis requires high cost and very time consuming. Thus, a One –Dimensional simulation software, was introduced in this study to reduce the experimental process and setup. In this study a medium duty 4.3L, 4- cylinder, 4-stroke retrofitted compression ignition engine (RE) model were used in this simulation work over various operational conditions at low engine speed. At the beginning of this study, the model was first compared with a medium duty 4.3L, 4- cylinder, 4-stroke C.I. engine (DE) in order to predict the engine model capabilities running with different fuel types at low speed condition. The most significant finding in this simulation configuration is the RE model was able to reduce the fuel consumption (BSFC) and experience lower; brake power (BP), brake torque (BT) and brake thermal efficiency (BTE) by 18.1%, 30.3%, 30.7%, and 14.6% respectively. For emissions results the model generated higher unburned hydrocarbon emissions (HC) and lower; oxides of nitrogen (NOx), carbon dioxides (CO2) and carbon monoxides (CO) by 99%, 60.2%, 56.4% and 36.1% respectively. The model also had been tested at various air-fuel ratio (AFR) condition varies from 15 (rich), 17.2 (stoichiometric) and 19 (lean) condition. Finally the comparison between the simulation model and experimental engine results for performance and emissions characteristics at low engine speed are presented, and it is confirmed that the result in this study able to produce a roughly similar trend.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Ismail, Muhammad Yusri
author_facet	Ismail, Muhammad Yusri
author_sort	Ismail, Muhammad Yusri
title	One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas
title_short	One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas
title_full	One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas
title_fullStr	One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas
title_full_unstemmed	One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas
title_sort	one-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Mekanikal dan Pembuatan
publishDate	2014
url	http://eprints.uthm.edu.my/1591/2/24p%20MUHAMMAD%20YUSRI%20ISMAIL.pdf http://eprints.uthm.edu.my/1591/1/MUHAMMAD%20YUSRI%20ISMAIL%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1591/3/MUHAMMAD%20YUSRI%20ISMAIL%20WATERMARK.pdf
_version_	1747830824091254784

One-dimensional simulation of a retrofitted medium duty engine running using compressed natural gas

Similar Items