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Combustion characteristics of methane in a direct injection engine using spark plug fuel injector

The combustion characteristics of methane in a direct injection spark ignition engine using Spark Plug Fuel Injector (SPFI) was investigated. SPFI is a system developed to convert any externally-mixing (port injection, carburetor) spark ignition engine to direct injection by combining fuel injectors...

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Main Author: Taib Iskandar Mohamad,
Format: Article
Language:English
Published: 2010
Online Access:http://journalarticle.ukm.my/2596/1/5-2010.pdf
http://journalarticle.ukm.my/2596/
http://www.ukm.my/jkukm/index.php/jkukm
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spelling my-ukm.journal.25962016-12-14T06:32:04Z http://journalarticle.ukm.my/2596/ Combustion characteristics of methane in a direct injection engine using spark plug fuel injector Taib Iskandar Mohamad, The combustion characteristics of methane in a direct injection spark ignition engine using Spark Plug Fuel Injector (SPFI) was investigated. SPFI is a system developed to convert any externally-mixing (port injection, carburetor) spark ignition engine to direct injection by combining fuel injectors into spark plugs. The burning rates of methane were measured using normalized combustion pressure method, where the normalized pressure rise due to combustion is equivalent to the mass fraction burnt at the specific crank angle. A single cylinder research engine was installed with the SPFI system. Cylinder pressures were taken with engine running at 1100 rpm and stoichiometric air/fuel ratio. The spark timing was set at 25oBTDC. For comparison, the engine was run with methane port injection. The optimal fuel injection timing with SPFI was found to be 170o BTDC. Results showed that SPFI direct injection, increased the volumetric efficiency by 11% compared to port injection, resulting in higher heating value of cylinder charge per cycle. Combustion analysis show that the overall burning rate of methane direct injection is faster than the ones of port injection although is slower at the initial stage. Injection pressures affect ignition delay but not the combustion duration. Changing mixture stoichiometry affects the magnitude of ignition delay. Combustion duration increases with leaner mixture. Different load conditions have significant effect on combustion process. Lower loads tend to increase combustion duration but shorten ignition delay. SPFI Di methane system has the potential of increasing engine performance due to increased volumetric efficiency and faster burning rate 2010 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/2596/1/5-2010.pdf Taib Iskandar Mohamad, (2010) Combustion characteristics of methane in a direct injection engine using spark plug fuel injector. Jurnal Kejuruteraan, 22 . pp. 43-52. http://www.ukm.my/jkukm/index.php/jkukm
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description The combustion characteristics of methane in a direct injection spark ignition engine using Spark Plug Fuel Injector (SPFI) was investigated. SPFI is a system developed to convert any externally-mixing (port injection, carburetor) spark ignition engine to direct injection by combining fuel injectors into spark plugs. The burning rates of methane were measured using normalized combustion pressure method, where the normalized pressure rise due to combustion is equivalent to the mass fraction burnt at the specific crank angle. A single cylinder research engine was installed with the SPFI system. Cylinder pressures were taken with engine running at 1100 rpm and stoichiometric air/fuel ratio. The spark timing was set at 25oBTDC. For comparison, the engine was run with methane port injection. The optimal fuel injection timing with SPFI was found to be 170o BTDC. Results showed that SPFI direct injection, increased the volumetric efficiency by 11% compared to port injection, resulting in higher heating value of cylinder charge per cycle. Combustion analysis show that the overall burning rate of methane direct injection is faster than the ones of port injection although is slower at the initial stage. Injection pressures affect ignition delay but not the combustion duration. Changing mixture stoichiometry affects the magnitude of ignition delay. Combustion duration increases with leaner mixture. Different load conditions have significant effect on combustion process. Lower loads tend to increase combustion duration but shorten ignition delay. SPFI Di methane system has the potential of increasing engine performance due to increased volumetric efficiency and faster burning rate
format Article
author Taib Iskandar Mohamad,
spellingShingle Taib Iskandar Mohamad,
Combustion characteristics of methane in a direct injection engine using spark plug fuel injector
author_facet Taib Iskandar Mohamad,
author_sort Taib Iskandar Mohamad,
title Combustion characteristics of methane in a direct injection engine using spark plug fuel injector
title_short Combustion characteristics of methane in a direct injection engine using spark plug fuel injector
title_full Combustion characteristics of methane in a direct injection engine using spark plug fuel injector
title_fullStr Combustion characteristics of methane in a direct injection engine using spark plug fuel injector
title_full_unstemmed Combustion characteristics of methane in a direct injection engine using spark plug fuel injector
title_sort combustion characteristics of methane in a direct injection engine using spark plug fuel injector
publishDate 2010
url http://journalarticle.ukm.my/2596/1/5-2010.pdf
http://journalarticle.ukm.my/2596/
http://www.ukm.my/jkukm/index.php/jkukm
_version_ 1643735432723169280
score 13.211869

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