| 柴油机富氧进气燃用乳化柴油的循环变动与燃烧特性 |
| |
| 引用本文： | 张韦,舒歌群,彭益源,毕克刚.柴油机富氧进气燃用乳化柴油的循环变动与燃烧特性[J].农业机械学报,2010,41(9). |
| |
| 作者姓名： | 张韦 舒歌群 彭益源 毕克刚 |
| |
| 作者单位： | 天津大学内燃机燃烧学国家重点实验室;昆明理工大学交通工程学院; |
| |
| 摘 要： | 在直喷柴油机上采用进气增氧(氧气在进气中的体积分数为21%、23%、25%和30%)技术,对燃用不同掺水乳化柴油(水在乳化柴油中的体积分数为0%、10%、20%和30%)的循环变动及燃烧特性进行研究;实验工况为发动机经济转速、中等负荷,采集20个连续循环,取最大爆发压力值,计算循环变动率.研究结果表明:在纯柴油条件下,随氧含量的增加,缸内最大爆发压力增加,循环变动率降低,燃烧始点提前;在使用乳化柴油时,着火点随水乳化率的增加而推后,但其依然遵循随进气O2体积分数增加而提前的规律;含水率达30%时,着火延迟加大,燃烧组织恶化,循环变动加大.
|
| 关 键 词： | 直喷柴油机 富氧进气 富氧燃烧 水乳化柴油 循环变动 燃烧特性 |
Cycle-by-cycle Variations of a DI Engine Fueled with Water Emulsion Diesel and Oxygen Enriched Intake Air |
| |
| Zhang Wei,Shu Gequn,Peng Yiyuan,Bi Kegang.Cycle-by-cycle Variations of a DI Engine Fueled with Water Emulsion Diesel and Oxygen Enriched Intake Air[J].Transactions of the Chinese Society of Agricultural Machinery,2010,41(9). |
| |
| Authors: | Zhang Wei Shu Gequn Peng Yiyuan Bi Kegang |
| |
| Institution: | Zhang Wei1,2 Shu Gequn1 Peng Yiyuan2 Bi Kegang2(1.State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China2.Faculty of Transportation Engineering,Kunming University of Science and Technology,Kunming 300024,China) |
| |
| Abstract: | The combustion characteristic and cycle-to-cycle variations of a DI engine using oxygen-enriched intake air(the volume fraction of oxygen as follows:21%,23%,25% and 30%) and water-diesel fuel emulsions(the amount of water was 0%,10%,20%and 30% by volume) were investigated.In-cylinder pressures of 20 combustion cycles and maximum pressures under economic speed and medium load operation were recorded.Consequently,cycle-to-cycle variations of maximum pressures and combustion characteristic were analyzed.The re... |
| |
| Keywords: | DI-diesel engine Oxygen-enriched intake air Oxygen-enriched combustion Water emulsion diesel Cycle-by-cycle variation Combustion characteristic |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
