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Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation

Two-stroke cycle engines have always been prominent due to their distinctive advantage incorporating high power-to-weight ratio, however the drawbacks are poor combustion efficiency, fuel short-circuiting and excessive emission of uHC and CO. These problems are apparent at low-load and speed regions...

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Main Authors: Andwari, Amin Mahmoudzadeh, Pesyridis, Apostolos, Esfahanian, Vahid, Muhamad Said, Mohd. Farid
Format: Article
Language:English
Published: MDPI AG 2019
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/88775/1/AminMahmoudzadeh2019_CombustionandEmissionEnhancementofaSparkIgnition.pdf
http://eprints.utm.my/id/eprint/88775/
http://dx.doi.org/10.3390/en12040609
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spelling my.utm.887752020-12-29T04:19:13Z http://eprints.utm.my/id/eprint/88775/ Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation Andwari, Amin Mahmoudzadeh Pesyridis, Apostolos Esfahanian, Vahid Muhamad Said, Mohd. Farid TJ Mechanical engineering and machinery Two-stroke cycle engines have always been prominent due to their distinctive advantage incorporating high power-to-weight ratio, however the drawbacks are poor combustion efficiency, fuel short-circuiting and excessive emission of uHC and CO. These problems are apparent at low-load and speed regions and are the major obstacle to their global acceptance. The deficiencies can be addressed by increasing the in-cylinder average charge temperature employing Exhaust Gas Recirculation (EGR). An experimental study is conducted to investigate the influence of utilizing EGR techniques, including Internal and External EGR, on combustion misfiring occurrence, combustion stability and exhaust emissions using a single cylinder two-stroke SI engine at idling, low and mid-load conditions. From the results, it is observed since the average in-cylinder charge temperature is increased, due to utilizing EGRs, engine’s low and mid-load irregular combustions (misfire) and exhaust emissions are remarkably supressed and almost all of misfire cycles eliminated depending on the percentage of EGRs. In terms of combustion stability, it is agreed in general the application of EGRs improves the cyclic variation of IMEP, P max and CA10 compared to conventional operation. However, applying Ex-EGR compared to In-EGR will deteriorate cyclic variability of IMEP and CA10. MDPI AG 2019-02-14 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/88775/1/AminMahmoudzadeh2019_CombustionandEmissionEnhancementofaSparkIgnition.pdf Andwari, Amin Mahmoudzadeh and Pesyridis, Apostolos and Esfahanian, Vahid and Muhamad Said, Mohd. Farid (2019) Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation. Energies, 12 (4). pp. 1-16. ISSN 1996-1073 http://dx.doi.org/10.3390/en12040609 DOI:10.3390/en12040609
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Andwari, Amin Mahmoudzadeh
Pesyridis, Apostolos
Esfahanian, Vahid
Muhamad Said, Mohd. Farid
Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation
description Two-stroke cycle engines have always been prominent due to their distinctive advantage incorporating high power-to-weight ratio, however the drawbacks are poor combustion efficiency, fuel short-circuiting and excessive emission of uHC and CO. These problems are apparent at low-load and speed regions and are the major obstacle to their global acceptance. The deficiencies can be addressed by increasing the in-cylinder average charge temperature employing Exhaust Gas Recirculation (EGR). An experimental study is conducted to investigate the influence of utilizing EGR techniques, including Internal and External EGR, on combustion misfiring occurrence, combustion stability and exhaust emissions using a single cylinder two-stroke SI engine at idling, low and mid-load conditions. From the results, it is observed since the average in-cylinder charge temperature is increased, due to utilizing EGRs, engine’s low and mid-load irregular combustions (misfire) and exhaust emissions are remarkably supressed and almost all of misfire cycles eliminated depending on the percentage of EGRs. In terms of combustion stability, it is agreed in general the application of EGRs improves the cyclic variation of IMEP, P max and CA10 compared to conventional operation. However, applying Ex-EGR compared to In-EGR will deteriorate cyclic variability of IMEP and CA10.
format Article
author Andwari, Amin Mahmoudzadeh
Pesyridis, Apostolos
Esfahanian, Vahid
Muhamad Said, Mohd. Farid
author_facet Andwari, Amin Mahmoudzadeh
Pesyridis, Apostolos
Esfahanian, Vahid
Muhamad Said, Mohd. Farid
author_sort Andwari, Amin Mahmoudzadeh
title Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation
title_short Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation
title_full Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation
title_fullStr Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation
title_full_unstemmed Combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation
title_sort combustion and emission enhancement of a spark ignition two-stroke cycle engine utilizing internal and external exhaust gas recirculation approach at low-load operation
publisher MDPI AG
publishDate 2019
url http://eprints.utm.my/id/eprint/88775/1/AminMahmoudzadeh2019_CombustionandEmissionEnhancementofaSparkIgnition.pdf
http://eprints.utm.my/id/eprint/88775/
http://dx.doi.org/10.3390/en12040609
_version_ 1687393620080984064
score 13.211869

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