Article(id=1325524255479452100, tenantId=1146029695717560320, journalId=1205116786560364546, issueId=1325524161678033072, articleNumber=null, orderNo=null, doi=10.16236/j.cnki.nrjxb.202503024, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1726156800000, receivedDateStr=2024-09-13, revisedDate=1740067200000, revisedDateStr=2025-02-21, acceptedDate=null, acceptedDateStr=null, onlineDate=1793959209555, onlineDateStr=2026-11-06, pubDate=1748102400000, pubDateStr=2025-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793959209555, onlineIssueDateStr=2026-11-06, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793959209555, creator=13701087609, updateTime=1793959209555, updator=13701087609, issue=Issue{id=1325524161678033072, tenantId=1146029695717560320, journalId=1205116786560364546, year='2025', volume='43', issue='3', pageStart='193', pageEnd='287', issueExtLink='null', onlineDate='null', pubDate='1748102400000', pubDateStr='2025-05-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793959187179, creator='13701087609', updateTime=1793959945056, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1325527341178569523, tenantId=1146029695717560320, journalId=1205116786560364546, issueId=1325524161678033072, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1325527341178569524, tenantId=1146029695717560320, journalId=1205116786560364546, issueId=1325524161678033072, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=201, endPage=210, ext={EN=ArticleExt(id=1325524257438192069, articleId=1325524255479452100, tenantId=1146029695717560320, journalId=1205116786560364546, language=EN, title=Influence of pre-chamber fuel injection parameters on combustion and emissions of a heavy-duty diesel engine, columnId=null, journalTitle=Transactions of CSICE, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The impact of pre-chamber injection timing and spray angle on combustion and emissions of a WP10H heavy-duty diesel engine was investigated using the numerical simulation software CONVERGE. The results show that under high-load conditions, pre-chamber combustion system improves combustion efficiency, advances the combustion phase, increases the peak cylinder pressure, shortens the combustion duration, and leads to an elevated wall heat transfer loss. Some pre-chamber setups studied effectively reduces both NOx and soot emissions. The optimized pre-chamber configurations demonstrates that sustained turbulence induced by the pre-chamber disrupts the redistribution of unburnt mixture in the main chamber, decreasing the presence of dilute mixtures in the cylinder and subsequently lowering NOx emissions. Additionally, with an equivalence ratio near 1, the increased mixture facilitates more comprehensive combustion, resulting in higher temperature in the main chamber during the soot oxidation stage and aiding in soot reduction. The final optimized solution involves selecting a pre-chamber injection timing of 0° CA ATDC and a pre-chamber injection angle of 54.5°. This configuration, compared to the baseline engine, results in a 2.48% reduction in NOx emissions and a 21.07% reduction in soot emission.
, authors=Yufeng Chen
1, Yingying Lu
1, Daochen Zhang
1, Yiqiang Pei
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以重型柴油机WP10H为研究对象,基于数值仿真软件CONVERGE研究预燃室式燃烧系统中预燃室内喷油定时和喷油角度对重型柴油机燃烧和排放的影响.结果表明:在大负荷工况下,预燃室式燃烧室能够强化燃烧,提前燃烧相位,提高缸压峰值,缩短燃烧持续期,但增加壁面传热损失;部分预燃室方案能够同时降低NOx和碳烟排放.优化后的方案表明,预燃室产生的持续湍动能扰动使得主燃室未燃混合气重新分布,降低稀燃混合气比例,降低NOx排放;同时当量比为1左右混合气比例增多,燃烧更加充分,在碳烟氧化阶段,主燃室温度高,利于碳烟氧化,降低碳烟排放.选择预燃室喷油定时为0° CA ATDC、预燃室喷油角度为54.5°作为最终优化方案,该预燃室方案相较于原机,NOx排放减少2.48%,碳烟排放减少21.07%.
, authors=陈雨凤
1, 鹿盈盈
1, 张道陈
1, 裴毅强
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Comparison of calculated and experimental results of cylinder pressure and heat release rate, figureFileSmall=GSvItM9AJCjQYbKrMoSF8w==, figureFileBig=KRjf/oyR21gzusFiDauo7A==, tableContent=null), ArticleFig(id=1325524270587335178, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图1, caption=
计算与试验值缸内压力与放热率对比, figureFileSmall=GSvItM9AJCjQYbKrMoSF8w==, figureFileBig=KRjf/oyR21gzusFiDauo7A==, tableContent=null), ArticleFig(id=1325524270864159243, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.2, caption=
Computation mesh for the TDC of the prechamber and a schematic diagram of the fuel injection tilt angle in the XOZ plane, figureFileSmall=ukUMqlLOKKKDBusUKMI5iQ==, figureFileBig=agqv4QF9Sua+k1whI+EJYg==, tableContent=null), ArticleFig(id=1325524270948045324, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图2, caption=
预燃室上止点计算网格和XOZ平面内的喷油倾斜角示意, figureFileSmall=ukUMqlLOKKKDBusUKMI5iQ==, figureFileBig=agqv4QF9Sua+k1whI+EJYg==, tableContent=null), ArticleFig(id=1325524271061291533, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.3, caption=
Impact of PIT on pre-chamber cylinder pressure,pre-chamber combustion temperature,and the pressure difference between the main and pre-chambers, figureFileSmall=THN6uJPlFbppsl3Un8cuNA==, figureFileBig=dGLimqkchTb5RJwvoo8eIQ==, tableContent=null), ArticleFig(id=1325524271166149134, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图3, caption=
PIT对预燃室缸内压力、预燃室燃烧温度及主-预燃室压力差的影响, figureFileSmall=THN6uJPlFbppsl3Un8cuNA==, figureFileBig=dGLimqkchTb5RJwvoo8eIQ==, tableContent=null), ArticleFig(id=1325524271237452303, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.4, caption=
Impact of PIT on indicated thermal efficiency,combustion phase,peak cylinder pressure,and energy distribution, figureFileSmall=+JT3D6XudZK9GSJWErqhEQ==, figureFileBig=AfK7hElq0pWNckF4p1xewA==, tableContent=null), ArticleFig(id=1325524271308755472, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图4, caption=
PIT对指示热效率、燃烧相位、缸压峰值及能量分布的影响, figureFileSmall=+JT3D6XudZK9GSJWErqhEQ==, figureFileBig=AfK7hElq0pWNckF4p1xewA==, tableContent=null), ArticleFig(id=1325524271384252945, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.5, caption=
Impact of PIT on wall heat transfer losses and in-cylinder turbulent kinetic energy, figureFileSmall=zytkUF+U0HU9SpGDXqA3xw==, figureFileBig=N0WGUSTq/wWqGr83nRu7YQ==, tableContent=null), ArticleFig(id=1325524271455556114, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图5, caption=
PIT对壁面传热损失以及缸内湍动能的影响, figureFileSmall=zytkUF+U0HU9SpGDXqA3xw==, figureFileBig=N0WGUSTq/wWqGr83nRu7YQ==, tableContent=null), ArticleFig(id=1325524271531053587, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.6, caption=
Impact of PIT on NOx and soot emissions, figureFileSmall=5d6655Gx8baolfKBt/ww5w==, figureFileBig=UpqCzDF6l7DAJriSPqQEEw==, tableContent=null), ArticleFig(id=1325524271602356756, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图6, caption=
PIT对NOx和碳烟排放的影响, figureFileSmall=5d6655Gx8baolfKBt/ww5w==, figureFileBig=UpqCzDF6l7DAJriSPqQEEw==, tableContent=null), ArticleFig(id=1325524271669465621, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.7, caption=
Impact of PIT on the distribution of in-cylinder TKE and equivalence ratio, figureFileSmall=ZX/QtF1bXW7zdoZGgAjS6A==, figureFileBig=zcwCLB8Hu5U7NCXdE8Sm8g==, tableContent=null), ArticleFig(id=1325524271736574486, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图7, caption=
PIT对缸内湍动能和当量比分布的影响, figureFileSmall=ZX/QtF1bXW7zdoZGgAjS6A==, figureFileBig=zcwCLB8Hu5U7NCXdE8Sm8g==, tableContent=null), ArticleFig(id=1325524271803683351, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.8, caption=
Impact of PIT on NOx emissions, figureFileSmall=0dQc33ksgqoFV6aaU6IKAw==, figureFileBig=1hBtvDq997g3XX4ba/QbPg==, tableContent=null), ArticleFig(id=1325524271883375128, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图8, caption=
PIT对NOx排放的影响, figureFileSmall=0dQc33ksgqoFV6aaU6IKAw==, figureFileBig=1hBtvDq997g3XX4ba/QbPg==, tableContent=null), ArticleFig(id=1325524271950483993, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.9, caption=
Distribution of in-cylinder TKE,temperature,equivalence ratio,and NOx at 30° CA ATDC under different PITs, figureFileSmall=cYRLPHg125EkHZ1QvennZw==, figureFileBig=OdagUiQvoEZ+otFOq3OYug==, tableContent=null), ArticleFig(id=1325524272025981466, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图9, caption=
不同PIT下30° CA ATDC时缸内湍动能、温度、当量比和NOx分布, figureFileSmall=cYRLPHg125EkHZ1QvennZw==, figureFileBig=OdagUiQvoEZ+otFOq3OYug==, tableContent=null), ArticleFig(id=1325524272093090331, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.10, caption=
Mass distribution ratio of equivalence ratio from 0 to 1, figureFileSmall=8Lzsd8wcJ4g1ETerGig8wA==, figureFileBig=1evaZbLTSTIH5Bzji4QViw==, tableContent=null), ArticleFig(id=1325524272239890972, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图10, caption=
在当量比为0~1时质量分布比例, figureFileSmall=8Lzsd8wcJ4g1ETerGig8wA==, figureFileBig=1evaZbLTSTIH5Bzji4QViw==, tableContent=null), ArticleFig(id=1325524272315388445, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.11, caption=
Impact of PIT on soot formation and oxidation, figureFileSmall=wnhCeOjuVDMUqexrJLSfEA==, figureFileBig=hFGk5m0KidNMZNyYr8zomQ==, tableContent=null), ArticleFig(id=1325524272613184030, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图11, caption=
PIT对碳烟生成和氧化的影响, figureFileSmall=wnhCeOjuVDMUqexrJLSfEA==, figureFileBig=hFGk5m0KidNMZNyYr8zomQ==, tableContent=null), ArticleFig(id=1325524272684487199, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.12, caption=
Distribution of in-cylinder equivalence ratio,temperature,and soot at 14° CA ATDC under different PITs, figureFileSmall=tKasw1D6ALWlmpJ9g1yJ4A==, figureFileBig=VFSJc29JtvSS+zMD8orOjg==, tableContent=null), ArticleFig(id=1325524272751596064, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图12, caption=
不同PIT、14° CA ATDC时缸内当量比、温度和碳烟分布, figureFileSmall=tKasw1D6ALWlmpJ9g1yJ4A==, figureFileBig=VFSJc29JtvSS+zMD8orOjg==, tableContent=null), ArticleFig(id=1325524272818704929, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.13, caption=
Distribution of in-cylinder oxygen,temperature,and soot at 40° CA ATDC under different PITs, figureFileSmall=R8nmLHXJshRvswfXVAqXrA==, figureFileBig=MtIPFN1A9E17HWBP9LaqcA==, tableContent=null), ArticleFig(id=1325524272902591010, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图13, caption=
不同PIT、40° CA ATDC时缸内氧气、温度和碳烟分布, figureFileSmall=R8nmLHXJshRvswfXVAqXrA==, figureFileBig=MtIPFN1A9E17HWBP9LaqcA==, tableContent=null), ArticleFig(id=1325524273028420131, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.14, caption=
In-cylinder temperature during the soot oxidation process at 15°—40° CA ATDC, figureFileSmall=KnyEN/3DYhAUIiqaUXgjBw==, figureFileBig=RSkk1vXdOEV952sZ1XMsqA==, tableContent=null), ArticleFig(id=1325524273112306212, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图14, caption=
碳烟氧化过程中15°~40° CA ATDC期间缸内温度, figureFileSmall=KnyEN/3DYhAUIiqaUXgjBw==, figureFileBig=RSkk1vXdOEV952sZ1XMsqA==, tableContent=null), ArticleFig(id=1325524273191997989, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.15, caption=
Impact of PIA on pre-chamber pressure,heat release rate, figureFileSmall=DgHTX6jtS7dQBOkdnjpo1w==, figureFileBig=NkJRsEoLYXtNdBeeRMPlow==, tableContent=null), ArticleFig(id=1325524273284272678, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图15, caption=
PIA对预燃室缸内压力、放热率的影响, figureFileSmall=DgHTX6jtS7dQBOkdnjpo1w==, figureFileBig=NkJRsEoLYXtNdBeeRMPlow==, tableContent=null), ArticleFig(id=1325524273351381543, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Fig.16, caption=
Effect of different PIAs on the equivalence ratio in the pre-chamber, figureFileSmall=IXEvU5m7ajFwWtmxtoBEng==, figureFileBig=gm5o32+DH7sxT9pkpHxsZQ==, tableContent=null), ArticleFig(id=1325524276870402600, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=图16, caption=
不同PIA对预燃室内当量比影响, figureFileSmall=IXEvU5m7ajFwWtmxtoBEng==, figureFileBig=gm5o32+DH7sxT9pkpHxsZQ==, tableContent=null), ArticleFig(id=1325524276962677289, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Tab.1, caption=
Engine specifications
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 缸径/mm | 116 |
| 活塞行程/mm | 150 |
| 连杆长度/mm | 224.5 |
| 转速/(r·min-1) | 1200 |
| 喷油系统 | 高压共轨 |
| 喷油压力/MPa | 180 |
| 喷孔数量 | 8 |
| 喷孔直径/mm | 0.169 |
| 喷孔之间夹角/(°) | 149 |
| 排量/L | 9.5 |
| 压缩比 | 18.5 |
| 燃油种类 | 国V0号柴油 |
), ArticleFig(id=1325524277071729194, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=表1, caption=
发动机技术参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 缸径/mm | 116 |
| 活塞行程/mm | 150 |
| 连杆长度/mm | 224.5 |
| 转速/(r·min-1) | 1200 |
| 喷油系统 | 高压共轨 |
| 喷油压力/MPa | 180 |
| 喷孔数量 | 8 |
| 喷孔直径/mm | 0.169 |
| 喷孔之间夹角/(°) | 149 |
| 排量/L | 9.5 |
| 压缩比 | 18.5 |
| 燃油种类 | 国V0号柴油 |
), ArticleFig(id=1325524277201752619, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Tab.2, caption=
Initial and boundary conditions of simulations
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 进气门关闭/(°)CA ATDC | -150 |
| 排气门开启/(°)CA ATDC | 126 |
| 涡流比 | 1.1 |
| 缸内初始压力/MPa | 0.35 |
| 进气温度/K | 326 |
| 气缸壁温度/K | 455 |
| 气缸盖温度/K | 535 |
| 活塞头温度/K | 524 |
| 总喷油量/mg | 180 |
| 主燃烧室喷油定时/(°)CA ATDC | -2 |
), ArticleFig(id=1325524277294027308, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=表2, caption=
模拟的初始条件和边界条件
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 进气门关闭/(°)CA ATDC | -150 |
| 排气门开启/(°)CA ATDC | 126 |
| 涡流比 | 1.1 |
| 缸内初始压力/MPa | 0.35 |
| 进气温度/K | 326 |
| 气缸壁温度/K | 455 |
| 气缸盖温度/K | 535 |
| 活塞头温度/K | 524 |
| 总喷油量/mg | 180 |
| 主燃烧室喷油定时/(°)CA ATDC | -2 |
), ArticleFig(id=1325524277369524781, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Tab.3, caption=
Comparison of simulated and experimental emission data
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 试验 | 仿真 | 误差/% |
|---|
| NOx排放/(g·kW-1·h-1) | 8.65 | 8.59 | 0.69 |
| 碳烟排放/(g·kW-1·h-1) | 0.00412 | 0.00425 | -3.05 |
), ArticleFig(id=1325524277445022254, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=表3, caption=
模拟与试验排放数据对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 试验 | 仿真 | 误差/% |
|---|
| NOx排放/(g·kW-1·h-1) | 8.65 | 8.59 | 0.69 |
| 碳烟排放/(g·kW-1·h-1) | 0.00412 | 0.00425 | -3.05 |
), ArticleFig(id=1325524277696680495, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Tab.4, caption=
Pre-chamber structural parameters and schemes
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 预燃室容积比例/% | 3 |
| 通孔直径/mm | 2 |
| 通孔倾角/(°) | 30 |
| 预燃室喷油器孔数 | 2 |
| 预燃室喷油器孔径/mm | 0.169 |
| 预燃室喷油比例/% | 1 |
| 喷油压力/MPa | 80 |
| PIA/(°) | 74.5,54.5,34.5,14.5 |
| PIT/(°)CA ATDC | -2,0,2,4,6 |
), ArticleFig(id=1325524277805732400, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=表4, caption=
预燃室结构参数及方案
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 预燃室容积比例/% | 3 |
| 通孔直径/mm | 2 |
| 通孔倾角/(°) | 30 |
| 预燃室喷油器孔数 | 2 |
| 预燃室喷油器孔径/mm | 0.169 |
| 预燃室喷油比例/% | 1 |
| 喷油压力/MPa | 80 |
| PIA/(°) | 74.5,54.5,34.5,14.5 |
| PIT/(°)CA ATDC | -2,0,2,4,6 |
), ArticleFig(id=1325524278065779249, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=EN, label=Tab.5, caption=
Summary of calculation results for different fuel injection parameters in the pre-chamber
, figureFileSmall=null, figureFileBig=null, tableContent=
| 预燃室方案 | PIT/(°)CA ATDC | PIA/(°) | NOx排放(与原机相较)/% | 碳烟排放(与原机相较)/% |
|---|
| 1 | -2 | 74.5 | -5.81 | -7.37 |
| 2 | -2 | 54.5 | -3.12 | -9.58 |
| 3 | -2 | 34.5 | 2.04 | -14.75 |
| 4 | -2 | 14.5 | -2.82 | -13.45 |
| 5 | 0 | 74.5 | 0.84 | -20.61 |
| 6 | 0 | 54.5 | -2.48 | -21.07 |
| 7 | 0 | 34.5 | -0.56 | -21.62 |
| 8 | 0 | 14.5 | -5.57 | -16.16 |
| 9 | 2 | 74.5 | 0.24 | -14.62 |
| 10 | 2 | 54.5 | 1.43 | -14.66 |
| 11 | 2 | 34.5 | 1.31 | -13.26 |
| 12 | 2 | 14.5 | 2.15 | -16.37 |
| 13 | 4 | 74.5 | 3.98 | -15.06 |
| 14 | 4 | 54.5 | 0.00 | -12.87 |
| 15 | 4 | 34.5 | 0.43 | -12.59 |
| 16 | 4 | 14.5 | 1.33 | -13.12 |
| 17 | 6 | 74.5 | -1.65 | -8.00 |
| 18 | 6 | 54.5 | -0.93 | -7.29 |
| 19 | 6 | 34.5 | 2.33 | -10.53 |
| 20 | 6 | 14.5 | 2.17 | -12.37 |
), ArticleFig(id=1325524279743500850, tenantId=1146029695717560320, journalId=1205116786560364546, articleId=1325524255479452100, language=CN, label=表5, caption=
预燃室内不同喷油参数计算结果汇总
, figureFileSmall=null, figureFileBig=null, tableContent=
| 预燃室方案 | PIT/(°)CA ATDC | PIA/(°) | NOx排放(与原机相较)/% | 碳烟排放(与原机相较)/% |
|---|
| 1 | -2 | 74.5 | -5.81 | -7.37 |
| 2 | -2 | 54.5 | -3.12 | -9.58 |
| 3 | -2 | 34.5 | 2.04 | -14.75 |
| 4 | -2 | 14.5 | -2.82 | -13.45 |
| 5 | 0 | 74.5 | 0.84 | -20.61 |
| 6 | 0 | 54.5 | -2.48 | -21.07 |
| 7 | 0 | 34.5 | -0.56 | -21.62 |
| 8 | 0 | 14.5 | -5.57 | -16.16 |
| 9 | 2 | 74.5 | 0.24 | -14.62 |
| 10 | 2 | 54.5 | 1.43 | -14.66 |
| 11 | 2 | 34.5 | 1.31 | -13.26 |
| 12 | 2 | 14.5 | 2.15 | -16.37 |
| 13 | 4 | 74.5 | 3.98 | -15.06 |
| 14 | 4 | 54.5 | 0.00 | -12.87 |
| 15 | 4 | 34.5 | 0.43 | -12.59 |
| 16 | 4 | 14.5 | 1.33 | -13.12 |
| 17 | 6 | 74.5 | -1.65 | -8.00 |
| 18 | 6 | 54.5 | -0.93 | -7.29 |
| 19 | 6 | 34.5 | 2.33 | -10.53 |
| 20 | 6 | 14.5 | 2.17 | -12.37 |
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