| 内燃兰金循环发动机爆震控制试验 |
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| 引用本文： | 康哲,付乐中,邓俊,吴志军.内燃兰金循环发动机爆震控制试验[J].同济大学学报(自然科学版),2017,45(7):1030-1036. |
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| 作者姓名： | 康哲 付乐中 邓俊 吴志军 |
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| 作者单位： | 同济大学 汽车学院，上海 201804,同济大学 汽车学院，上海 201804,同济大学 汽车学院，上海 201804,同济大学 汽车学院，上海 201804 |
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| 基金项目： | 国家自然科学基金重大研究计划(91441125)；国家自然科学基金(51076118) |
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| 摘 要： | 基于一台改造的双缸柴油机,结合自行开发的进气及缸内高温水喷射系统,针对高压缩比、高氧浓度下内燃兰金循环发动机爆震工况开展试验研究.结果表明,与空气进气相比,高氧浓度进气会导致爆震出现,通过对缸内压力进行傅里叶变换和带通滤波后得到的爆震强度可达0.26 MPa.在爆震工况下结合缸内高温高压水喷射策略,可以有效抑制爆震强度,维持缸内燃烧过程稳定,与此同时,高温高压水吸热蒸发汽化,有效提高系统热效率.
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| 关 键 词： | 内燃机 内燃兰金循环 纯氧燃烧 缸内喷水 爆震控制 |
| 收稿时间： | 2016/8/31 0:00:00 |
| 修稿时间： | 2017/5/9 0:00:00 |
Experimental Study of Knock Control in an Internal Combustion Rankine Cycle Engine |
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| KANG Zhe,FU Lezhong,DENG Jun and WU Zhijun.Experimental Study of Knock Control in an Internal Combustion Rankine Cycle Engine[J].Journal of Tongji University(Natural Science),2017,45(7):1030-1036. |
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| Authors: | KANG Zhe FU Lezhong DENG Jun and WU Zhijun |
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| Institution: | School of Automotive Studies, Tongji University, Shanghai 201804 China,School of Automotive Studies, Tongji University, Shanghai 201804 China,School of Automotive Studies, Tongji University, Shanghai 201804 China and School of Automotive Studies, Tongji University, Shanghai 201804 China |
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| Abstract: | Based on a retrofitted two cylinder diesel engine, combined with a self designed intake and direct high temperature water injection system, the knock condition existed in internal combustion rankine cycle engine have been investigated at a high compression ratio and high oxygen fraction. The results show that compared with air intake, the knock occurred results in a high oxygen faction and the knock intensity (KIA) calculated from in cylinder pressure Fourier transfer and band pass filtering reaches 0.26 MPa. The knock frequency is controlled by utilizing a suitable direct water injection strategy and the combustion stability is sustained. Meanwhile, the injected high temperature and pressure water evaporate after heat absorption, which improves system thermal efficiency effectively. |
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| Keywords: | internal combustion engine internal combustion rankine cycle oxy fuel direct water injection knock control |
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