Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine

Compressed Natural Gas (CNG) has been accepted widely as an alternative to gasoline. More importantly the use of CNG in two stroke engines will drastically reduce the high emission output from these engines as these engines are widely used around the world. A conversion kit is used to apply the fuel...

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Main Author:	Ramasamy, Devarajan
Format:	Thesis
Language:	English
Published:	2005
Subjects:	TC Hydraulic engineering Ocean engineering TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/2191/1/DevarajanRamasamyMFKM2006.pdf
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id	my-utm-ep.2191
record_format	uketd_dc
spelling	my-utm-ep.21912018-06-13T07:07:46Z Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine 2005-10 Ramasamy, Devarajan TC Hydraulic engineering. Ocean engineering TJ Mechanical engineering and machinery Compressed Natural Gas (CNG) has been accepted widely as an alternative to gasoline. More importantly the use of CNG in two stroke engines will drastically reduce the high emission output from these engines as these engines are widely used around the world. A conversion kit is used to apply the fuel in engines. A bi-fuel conversion system converts engines without much modification to other systems. They are normally produced for four stroke application. This kit has to be studied to be modified for two stroke application. The part that connects the engine to the kit is called a gaseous fuel mixer. This part mixes the air and fuel due to its venturi shape. A mixer provides fuel suction at different engine speeds due to pressure difference at the throat. The optimisation of the throat is important as a small throat will cause poor performance at high speeds while a large throat will reduce fuel suction. The smaller throat size creates higher velocity and lower pressure. This low pressure creates fuel suction into the mixer. The mixer was designed for a two stroke engine air flow. Computer aided design (CAD) and computational fluid dynamic (CFD) software were used as a tool for the design. The design is optimised for inlet and outlet angles, number and size of the hole at the throat circumference and also the throat size. The prototype design was manufactured based on optimised dimensions of the mixer that were obtained from CFD analysis. The mixer was validated to show that the CFD analysis was correct. Testing apparatus were used to do the validation. The apparatus consists of a laminar flow element (LFE), a smoke generator, a digital manometer and a gaseous flow meter. It was used to validate the flow pattern, pressure drop from the mixer and the air fuel ratio given by the mixer 2005-10 Thesis http://eprints.utm.my/id/eprint/2191/ http://eprints.utm.my/id/eprint/2191/1/DevarajanRamasamyMFKM2006.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering : Mechanical Faculty of Mechanical Engineering : Mechanical
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TC Hydraulic engineering Ocean engineering TJ Mechanical engineering and machinery
spellingShingle	TC Hydraulic engineering Ocean engineering TJ Mechanical engineering and machinery Ramasamy, Devarajan Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine
description	Compressed Natural Gas (CNG) has been accepted widely as an alternative to gasoline. More importantly the use of CNG in two stroke engines will drastically reduce the high emission output from these engines as these engines are widely used around the world. A conversion kit is used to apply the fuel in engines. A bi-fuel conversion system converts engines without much modification to other systems. They are normally produced for four stroke application. This kit has to be studied to be modified for two stroke application. The part that connects the engine to the kit is called a gaseous fuel mixer. This part mixes the air and fuel due to its venturi shape. A mixer provides fuel suction at different engine speeds due to pressure difference at the throat. The optimisation of the throat is important as a small throat will cause poor performance at high speeds while a large throat will reduce fuel suction. The smaller throat size creates higher velocity and lower pressure. This low pressure creates fuel suction into the mixer. The mixer was designed for a two stroke engine air flow. Computer aided design (CAD) and computational fluid dynamic (CFD) software were used as a tool for the design. The design is optimised for inlet and outlet angles, number and size of the hole at the throat circumference and also the throat size. The prototype design was manufactured based on optimised dimensions of the mixer that were obtained from CFD analysis. The mixer was validated to show that the CFD analysis was correct. Testing apparatus were used to do the validation. The apparatus consists of a laminar flow element (LFE), a smoke generator, a digital manometer and a gaseous flow meter. It was used to validate the flow pattern, pressure drop from the mixer and the air fuel ratio given by the mixer
format	Thesis
qualification_level	Master's degree
author	Ramasamy, Devarajan
author_facet	Ramasamy, Devarajan
author_sort	Ramasamy, Devarajan
title	Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine
title_short	Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine
title_full	Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine
title_fullStr	Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine
title_full_unstemmed	Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine
title_sort	development of a compressed natural gas (cng) mixer for a two stroke internal combustion engine
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering : Mechanical
granting_department	Faculty of Mechanical Engineering : Mechanical
publishDate	2005
url	http://eprints.utm.my/id/eprint/2191/1/DevarajanRamasamyMFKM2006.pdf
_version_	1747814404402970624

Development of a compressed natural gas (CNG) mixer for a two stroke internal combustion engine

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