|
|
- 2016
Atkinson循环发动机进气系统匹配优化模拟与试验
|
Abstract:
运用GT-Power建立发动机计算模型, 研究气门型线、进气歧管形式对1.5 L Atkinson循环发动机经济性和动力性的影响; 运用CFD软件AVL-Fire对不同燃烧室形式下的燃烧过程进行模拟研究, 并通过台架试验数据进行验证．研究结果表明：最佳进气持续期为240° CA, 气门最大升程为8 mm．此时, 长度为300 mm的侧面进气的进气歧管与改进的燃烧室匹配, 在研究转速范围内, 最低油耗比原机降低了7.23～8.31 g/(kW？h), 且低油耗区范围明显扩大; 长度为100 mm的中间进气形式歧管的最低油耗比原机降低了6.21～9.19 g/(kW？h), 低油耗区范围也有明显扩大; 两种形式的进气歧管皆可以满足降低油耗的需求, 需根据发动机实际布置情况进行选择．
To study the fuel economy and dynamic performance of a 1.5 L Atkinson cycle engine，a GT-Power(1-D)simulation model and AVL-Fire(3-D)computational model were built and calibrated with experimental data. The research was conducted by changing intake valve profile，intake manifold forms and chamber shapes. The results demonstrate that the perfect intake duration and maximum valve lift are 240° CA and 8 mm respectively. 300 mm intake manifold was matched with an improved chamber leading to a range of 7.23―8.31 g/(kW？h) reduction in fuel consumption with the speed that has been studied，and the engine can get a low fuel consumption under the load condition and speed range commonly used. An intermediate form of intake manifold was matched with the improved chamber，with a range of 6.21―9.19 g/(kW？h) reduction in fuel consumption at the studied speed. These two forms of intake manifold have both expanded the area of low fuel consumption significantly. Both forms of the intake manifold can meet the need of the engine and should be applied according to the actual arrangement of the engine
| [1] | Wang Tianyou, Zhang Yunquan, Wang Limin, et al. Effect of throttle free load control strategies on a SI engine performance[J]. <i>Transactions of CSICE</i>, 2009, 27(3):226-230(in Chinese). |
| [2] | Liu Jingping, Fu Jianqin, Feng Renhua, et al. The effects of working parameters on gasoline engine energy balance[J]. <i>Journal of Central South University</i>, 2013, 20(7):1938-1946. |
| [3] | Anderson M K, Assanis D N, Filipi Z S. First and second law analyses of a naturally-aspirated Miller cycle, SI engine with late intake valve closure[J]. <i>SAE Technical Paper Series</i>, 1998:980889. |
| [4] | 朱国辉, 夏孝朗, 刘敬平, 等. 传统汽油机改进成混合动力Atkinson循环专用发动机的节油效果[J]. 中南大学学报:自然科学版, 2014, 45(4):1302-1311. |
| [5] | Zhu Guohui, Xia Xiaolang, Liu Jingping, et al. Fuel saving effect of Atkinson cycle engine applied to hybrid vehicle converted from conventional gasoline engine[J]. <i>Journal of Central South University</i>:<i>Science and Technology</i>, 2014, 45(4):1302-1311(in Chinese). |
| [6] | Jemni M A, Kantchev G, Abid M S. Influence of intake manifold design on in-cylinder flow and engine performances in a bus diesel engine converted to LPG gas fuelled, using CFD analyses and experimental investigations[J]. <i>Energy</i>, 2011, 36:2701-2715. |
| [7] | Ehsani M, Gao Yimin, Sebastien E, et al. <i>Modern Eelectric Hybrid Electric</i>, <i>and Fuel Cell Vehicles</i>:<i>Fun-damentals</i>, <i>Theory</i>, <i>and Design</i>[M]. Boca Raton, France:CRC Press, 2005:284-294. <i> |
| [8] | </i> 王天友, 张运泉, 王利民, 等. 无节气门负荷控制策略对汽油机性能影响的研究[J]. 内燃机学报, 2009, 27(3):226-230. |
| [9] | Wang P, Hou S S. Performance analysis and comparison of an Atkinson cycle coupled to variable temperature heatre servoirs under maximum power and maximum power density conditions[J]. <i>Energy Conversion and Management</i>, 2005, 46(15/16):2637-2655. |
| [10] | 秦 静, 李云龙, 张少哲, 等. 进气门晚关与高压缩比技术在汽油机上的应用[J]. 天津大学学报:自然科学与工程技术版, 2014, 47(11):1008-1016. |
| [11] | tion of late intake valve Closure(LIVC)strategy combined with high compression ratio in a gasoline engine [J]. <i>Journal of Tianjin University</i>:<i>Science and Technology</i>, 2014, 47(11):1008-1016(in Chinese). |
| [12] | 李彦涛. 混合动力汽车用Atkinson循环发动机的燃油经济性研究[D]. 天津:天津大学机械工程学院, 2011. |
| [13] | 江冰, 武昭晖, 何云堂. CNG 发动机燃烧室形状对气流运动和燃烧特性的影响[J]. 农业机械学报, 2015, 46(1):338-344. |
| [14] | Zhao Yingru, Chen Jincan. Performance analysis and parametric optimum criteria of an irreversible Atkinson heat-engine[J]. <i>Applied Energy</i>, 2006, 83(8):789-800. |
| [15] | Qin Jing, Li Yunlong, Zhang Shaozhe, et al. Applica |
| [16] | Li Yantao. Study on the Fuel Economy Performance of Atkinson Cycle Engine Used for Hybrid Vehicle[D]. Tianjin:School of Mechanical Engineering, Tianjin University, 2011(in Chinese). |
| [17] | Jiang Bing, Wu Zhaohui, He Yuntang. Effect of combustion chamber’s shape of CNG engine on air flow and combustion characteristic[J]. <i>Journal of Agricultural Machinery</i>, 2015, 46(1):338-344(in Chinese). |
| [18] | Zhao Jinxing, Xu Min, Li Mian, et al. Design and optimization of an Atkinson cycle engine with the artificial neural network method[J]. <i>Applied Energy</i>, 2012, 92:492-502. |
