Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes
Combining stratified lean-burn techniques with methanol offers a promising path to achieving high efficiency and low emissions in direct-injection spark-ignition (DISI) engines. This work compares the stratified and homogeneous-stratified lean-burn characteristics of methanol/gasoline fuels on a DIS...
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Elsevier
2024-12-01
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| Series: | Fuel Processing Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0378382024001309 |
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| author | Miaomiao Zhang Jianbin Cao |
| author_facet | Miaomiao Zhang Jianbin Cao |
| author_sort | Miaomiao Zhang |
| collection | DOAJ |
| description | Combining stratified lean-burn techniques with methanol offers a promising path to achieving high efficiency and low emissions in direct-injection spark-ignition (DISI) engines. This work compares the stratified and homogeneous-stratified lean-burn characteristics of methanol/gasoline fuels on a DISI engine. Combustion and emissions characteristics under two stratified lean-burn strategies were investigated. The results indicate that compared to double-injection stratified lean-burn (DISL), single-injection stratified lean-burn (SISL) leads to more timely combustion, which deteriorates more slowly as the excess air ratio increases. Using M20 fuel with SISL achieves a higher tolerance for air dilution. At the same excess air ratio, SISL results in higher maximum in-cylinder pressure and combustion temperature, but lower exhaust temperature. The economic zone for SISL occurs with M40 fuel at λ = 1.3–1.6, whereas DISL's economic zone is within λ = 1.1–1.3. When λ is below 1.5, SISL produces higher hydrocarbon (HC) emissions but lower nitrogen oxides (NOx) emissions. However, as λ exceeds 1.5, HC emissions from DISL increase sharply while NOx emissions decrease significantly. The particle concentration from SISL is at least an order of magnitude higher than that from DISL, with particle size distribution forming a unimodal curve centered around accumulation mode particles. Conversely, DISL exhibits a quasi-bimodal distribution. |
| format | Article |
| id | doaj-art-85fd2a10f23f491cbfbfd12c2797ba7f |
| institution | OA Journals |
| issn | 0378-3820 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Fuel Processing Technology |
| spelling | doaj-art-85fd2a10f23f491cbfbfd12c2797ba7f2025-08-20T02:07:16ZengElsevierFuel Processing Technology0378-38202024-12-0126610816010.1016/j.fuproc.2024.108160Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modesMiaomiao Zhang0Jianbin Cao1Corresponding author.; School of Mechatronic Engineering, Jiangsu Normal University, Xuzhou 221116, ChinaSchool of Mechatronic Engineering, Jiangsu Normal University, Xuzhou 221116, ChinaCombining stratified lean-burn techniques with methanol offers a promising path to achieving high efficiency and low emissions in direct-injection spark-ignition (DISI) engines. This work compares the stratified and homogeneous-stratified lean-burn characteristics of methanol/gasoline fuels on a DISI engine. Combustion and emissions characteristics under two stratified lean-burn strategies were investigated. The results indicate that compared to double-injection stratified lean-burn (DISL), single-injection stratified lean-burn (SISL) leads to more timely combustion, which deteriorates more slowly as the excess air ratio increases. Using M20 fuel with SISL achieves a higher tolerance for air dilution. At the same excess air ratio, SISL results in higher maximum in-cylinder pressure and combustion temperature, but lower exhaust temperature. The economic zone for SISL occurs with M40 fuel at λ = 1.3–1.6, whereas DISL's economic zone is within λ = 1.1–1.3. When λ is below 1.5, SISL produces higher hydrocarbon (HC) emissions but lower nitrogen oxides (NOx) emissions. However, as λ exceeds 1.5, HC emissions from DISL increase sharply while NOx emissions decrease significantly. The particle concentration from SISL is at least an order of magnitude higher than that from DISL, with particle size distribution forming a unimodal curve centered around accumulation mode particles. Conversely, DISL exhibits a quasi-bimodal distribution.http://www.sciencedirect.com/science/article/pii/S0378382024001309Stratified lean-burnHomogeneous-stratified lean-burnMethanolCombustionParticulate matterEmissions |
| spellingShingle | Miaomiao Zhang Jianbin Cao Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes Fuel Processing Technology Stratified lean-burn Homogeneous-stratified lean-burn Methanol Combustion Particulate matter Emissions |
| title | Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes |
| title_full | Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes |
| title_fullStr | Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes |
| title_full_unstemmed | Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes |
| title_short | Comparative study on combustion and emission characteristics of methanol/gasoline blend fueled DISI engine under different stratified lean burn modes |
| title_sort | comparative study on combustion and emission characteristics of methanol gasoline blend fueled disi engine under different stratified lean burn modes |
| topic | Stratified lean-burn Homogeneous-stratified lean-burn Methanol Combustion Particulate matter Emissions |
| url | http://www.sciencedirect.com/science/article/pii/S0378382024001309 |
| work_keys_str_mv | AT miaomiaozhang comparativestudyoncombustionandemissioncharacteristicsofmethanolgasolineblendfueleddisiengineunderdifferentstratifiedleanburnmodes AT jianbincao comparativestudyoncombustionandemissioncharacteristicsofmethanolgasolineblendfueleddisiengineunderdifferentstratifiedleanburnmodes |