| Related citation: | Ruina Li,Liang Zhang,Jialong Zhu,Yan Hua,Zhong Wang.Experimental Study on the Performance and Emission of Chinese Small Agricultural Diesel Engine Fuelled with Methanol/Biodiesel/DTBP[J].Journal of Harbin Institute Of Technology(New Series),2022,29(3):67-78.DOI:10.11916/j.issn.1005-9113.2021123. |
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| Author Name | Affiliation | | Ruina Li | School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Vehicle Measurement, Control and Safety Key Laboratory of Sichuan Province, Chengdu 610039, China
Provincial Engineering Research Center for New Energy Vehicle Intelligent Control and Simulation Test Technology of Sichuan, Chengdu 610039, China | | Liang Zhang | School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China | | Jialong Zhu | School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China | | Yan Hua | School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China | | Zhong Wang | School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China |
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| Abstract: |
| Diesel engine alternative fuels, such as methanol and biodiesel, are beneficial to reduce diesel engine emission. In order to study the influence of methanol and biodiesel on the performance, economy and emission of small agricultural diesel engine, the physical-chemical properties (cetane number, lower heat value (LHV), viscosity, etc.) of methanol and biodiesel were analyzed. The methanol and biodiesel showed good complementary property to some extent. When a large proportion of methanol was added into biodiesel, the cetane number of the methanol/biodiesel blend will be greatly reduced. Since the cetane number of the blend fuel has great influence on the combustion process of diesel engine, after testing for blending ratio of methanol/biodiesel, the blend was prepared with 5% (BM5), 10% (BM10) and 15% (BM15) methanol, respectively. Di-Tert-Butyl Peroxide (DTBP) was chosen as a cetane number improver to be added into methanol/biodiesel blend. 0.25%, 0.50% and 0.75% of DTBP was added into BM15. The bench test was carried out on a 186FA diesel engine to study the effect of methanol and DTBP on the engine performance and emissions. The results show that, at rated condition, compared with biodiesel, the NOx concentration of BM5, BM10 and BM15 is reduced by 5.02%, 33.85% and 21.24%, and smoke is reduced by 5.56%, 22.22% and 55.56%. However, the engine power is also reduced by 5.77%, 14.23% and 25.41%, and the brake specific energy consumption is increased by 3.31%, 7.78% and 6.37%. The addition of DTBP in methanol/biodiesel could recover the engine power to the level of diesel. DTBP shows good effect on the reduction of the brake specific energy consumption and NOx, CO, HC concentration, but a little increase of exhaust smoke. |
| Key words: methanol biodiesel agricultural diesel engine combustion performance emission |
| DOI：10.11916/j.issn.1005-9113.2021123 |
| Clc Number:U464.173 |
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| Descriptions in Chinese: |
| 中国小型农用柴油机燃用甲醇/生物柴油/DTBP的性能与排放试验研究 李瑞娜1,2,3，张亮1，朱佳隆1，华琰1，王忠1 （1、江苏大学汽车与交通工程学院，江苏 镇江212013； 2. 汽车测控与安全四川省重点实验室，成都 610039； 3. 四川省新能源汽车智能控制与仿真测试技术工程研究中心，成都 610039） 摘要：为了研究甲醇和生物柴油对小型农用柴油机性能、经济性和排放的影响，分析了甲醇和生物柴油的物理化学性质（十六烷值、低热值、粘度等）。甲醇和生物柴油的性质在一定程度上表现出良好的互补性。当在生物柴油中加入大量甲醇时，甲醇/生物柴油混合物的十六烷值将大幅度降低。由于混合燃料的十六烷值对柴油机的燃烧过程有很大影响，在对甲醇/生物柴油的混合比进行试验后，分别用5%（BM5）、10%（BM10）、15%（BM15）的甲醇添加到生物柴油中制备了混合燃料。选择过氧化二叔丁基（DTBP）作为十六烷值改进剂添加到甲醇/生物柴油混合物中。在BM15中分别加入0.25%、0.50%、0.75%的DTBP。在186FA柴油机上进行台架试验，研究了甲醇和DTBP对发动机性能和排放的影响。结果表明，在额定工况下，与生物柴油相比，BM5、BM10和BM15的NOx浓度分别降低了5.02%、33.85%和21.24%，烟度分别降低了5.56%、22.22%和55.56%，发动机功率降低了5.77%、14.23%和25.41%，比能耗提高了3.31%，7.78%和6.37%。在甲醇/生物柴油中添加DTBP可以将发动机功率恢复到柴油的水平。DTBP对降低比能耗、降低NOx、CO、HC浓度有较好的效果，但排气烟度略有增加。 关键词：甲醇、生物柴油、农用柴油机、燃烧、性能、排放 |
