| 基于遗传-支持向量机的对置活塞二冲程柴油机气口高度优化 |
| |
| 引用本文： | 鲁雪田,张付军,章振宇,刘宇航.基于遗传-支持向量机的对置活塞二冲程柴油机气口高度优化[J].航空动力学报,2019,34(11):2387-2394. |
| |
| 作者姓名： | 鲁雪田 张付军 章振宇 刘宇航 |
| |
| 作者单位： | 北京理工大学机械与车辆学院,北京,100081;北京理工大学机械与车辆学院,北京100081;北京理工大学深圳研究院,广东深圳518057;中国航天科技集团有限公司中国运载火箭技术研究院北京航天发射技术研究所,北京,100076 |
| |
| 基金项目： | 深圳市科技创新基金项目(JCYJ20170817114345260) |
| |
| 摘 要： | 以某对置活塞二冲程柴油机为研究对象,基于一维仿真模型,利用遗传-支持向量机的方法,以油耗为优化目标,进行不同转速工况下进排气口高度组合的自动化寻优。结果表明:在1200r/min下,优化的进、排气口无量纲化高度组合为［0.075,0.105］,所得最小油耗为220.32g/(kW·h);对置活塞二冲程柴油机的气口最优高度应随着转速的提高逐渐增大;且在高转速(大于1600r/min)下,排气口最优高度增加趋势更加明显。
|
| 关 键 词： | 遗传-支持向量机 对置活塞二冲程柴油机 气口高度 转速 油耗 |
| 收稿时间： | 2019/5/4 0:00:00 |
Optimization of port height of opposed-piston two-stroke diesel engine based on GA-SVM |
| |
| LU Xuetian,ZHANG Fujun and ZHANG Zhenyu.Optimization of port height of opposed-piston two-stroke diesel engine based on GA-SVM[J].Journal of Aerospace Power,2019,34(11):2387-2394. |
| |
| Authors: | LU Xuetian ZHANG Fujun and ZHANG Zhenyu |
| |
| Affiliation: | 1.School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China2.Shenzhen Research Institute,Beijing Institute of Technology,Shenzhen Guangdong 518057,China |
| |
| Abstract: | Taking fuel consumption as the optimization goal, the automatic optimization of the intake and exhaust port height of an opposed-piston two-stroke diesel engine prototype for various engine speeds was simulated experimentally by using the genetic-support vector machine method on the basis of one-dimensional simulation model. The results showed that under the low engine speed such as 1200r/min, the combination of optimized dimensionless intake and exhaust ports height was［0.075, 0.105］, and the minimum fuel consumption was 220.32g/(kW·h). For the opposed-piston two-stroke diesel engine, the optimized port height for either intake port or exhaust port monotonically increased with the increasing engine speed. Exhaust port height increased more obviously than that of intake port for optimized port height under high engine speed (engine speed was greater than 1600r/min). |
| |
| Keywords: | genetic-support vector machine opposed-piston two-stroke diesel engine port height engine speed fuel consumption |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
|
点击此处可从《航空动力学报》下载全文 |
|
