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

鲁雪田; 张付军; 章振宇

doi:10.13224/j.cnki.jasp.2019.11.010

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

doi: 10.13224/j.cnki.jasp.2019.11.010

1.
北京理工大学机械与车辆学院,北京 100081
2.
北京理工大学深圳研究院,广东深圳 518057

基金项目: 深圳市科技创新基金项目(JCYJ20170817114345260)

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出版历程
- 收稿日期: 2019-05-04
- 刊出日期: 2019-11-28

Optimization of port height of opposed-piston two-stroke diesel engine based on GA-SVM

1.
School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China
2.
Shenzhen Research Institute,Beijing Institute of Technology,Shenzhen Guangdong 518057,China

摘要

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。
- 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
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).
- genetic-support vector machine /
- opposed-piston two-stroke diesel engine /
- port height /
- engine speed /
- fuel consumption

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参考文献(24)

[1]	吴丹.对置活塞二冲程柴油机换气过程研究［D］.北京:北京理工大学,2015.WU Dan.Investigation on the gas exchange process of an opposed-piston two-stroke diesel engine［D］.Beijing:Beijing Institute of Technology,2015.(in Chinese)
[2]	REDON F, KALEBJIAN C, KESSLER J,et al.Meeting stringent 2025 emissions and fuel efficiency regulations with an opposed-piston,light-duty diesel engine［R］.SAE Technical Paper 2014-01-1187,2014.
[3]	陈文婷,诸葛伟林,张扬军,等.双对置二冲程柴油机扫气过程仿真研究口［J］.航空动力学报,2010,25(6):1322-1326.CHEN Wenting,ZHUGE Weilin,ZHANG Yangjun,et al.Simulation on the scavenging process of the opposite two-stroke diesel engine［J］.Journal of Aerospace Power,2010,25(6):1322-1326.(in Chinese)
[4]	马富康,赵长禄,张付军,等.对置活塞二冲程汽油机分层稀燃组织研究［J］.北京理工大学学报,2018,38(1):12-19.MA Fukang,ZHAO Changlu,ZHANG Fujun,et al.Research on stratified mixture lean burn of opposed-piston two-stroke gasoline engine［J］.Transactions of Beijing Institute of Technology,2018,38(1):12-19.(in Chinese)
[5]	高宏力,张付军,刘波澜,等.空气辅助喷射闪急沸腾喷雾特性试验［J］.航空动力学报,2019,34(1):63-72.GAO Hongli,ZHANG Fujun,LIU Bolan,et al.Experiment on spray characteristics of air-assisted injection under flash boiling conditions［J］.Journal of AerospacePower,2019,34(1):63-72.(in Chinese)
[6]	HEROLD R E,WAHL M H,REGNER G,et al.Thermodynamic benefits of opposed-piston two-stroke engines［R］.SAE Technical Paper 2011-01-2216,2011.
[7]	KALKSTEIN J,ROVER W,CAMPBELL B,et al.Opposed piston opposed cylinder (OPOC7M) 5/10kW heavy fuel engine for UAVs and APUs［M］.Washington DC:SAE,2006:26-45.
[8]	FRANKE M,HUANG H,LIU J P,et al.Opposed piston opposed cylinder (opocTM) 450 hp engine:performance development by CAE simulations and testing［R］.SAE Technical Paper 2006-01-0277,2006.
[9]	章振宇.对置活塞二冲程柴油机工作过程耦合仿真与试验研究［D］.北京:北京理工大学,2015.ZHANG Zhenyu.Coupling simulation and experimental research on the working process of an opposed-piston two-stroke diesel engine［D］.Beijing:Beijing Institute of Technology,2015.(in Chinese)
[10]	董雪飞.对置活塞二冲程柴油机换气过程及增压匹配研究［D］.北京:北京理工大学,2015.DONG Xuefei.Research on scavenging process and turbocharging matching of an opposed-piston two-stroke diesel engine［D］.Beijing:Beijing Institute of Technology,2015.(in Chinese)
[11]	裴玉姣.对置活塞式二冲程柴油机直流扫气过程仿真分析及优化［D］.太原:中北大学,2013.PEI Yujiao.Analysis and optimization on the uniflow scavenging process for the opposed piston two-stroke diesel engine［D］.Taiyuan:North University of China,2013.(in Chinese)
[12]	SCHUH D,CHEHROUDI B.LDV measurements of intake port flow in a two-stroke engine with and without combustion［R］.SAE Technical Paper 920424,1992.
[13]	RAVI M R,MARATHE A G.Effect of inlet and exhaust pressures on the scavenging characteristics of a carbureted uniflow scavenged engine［R］.SAE Technical Paper 920840,1992.
[14]	RAVI M R,MARATHE A G.Effect of port sizes and timings on the scavenging characteristics of a uniflow scavenged engine［J］.SAE Transactions,1992,101(3):1571-1589.
[15]	HOFBAUER P.Opposed piston opposed cylinder (OPOC) engine for military ground vehicles［R］.SAE Technical Paper 2005-01-1548,2005.
[16]	张文春.对置活塞发动机运动和动力特性研究［D］.辽宁大连:大连海事大学,2013.ZHANG Wenchun.The research of kinematic and dynamic characters of opposed piston engines［D］.Dalian,Liaoning:Dalian Maritime University,2013.(in Chinese)
[17]	张航.二冲程船用柴油机扫气过程CFD模拟分析［D］.辽宁大连:大连海事大学,2011.ZHANG Hang.CFD simulation and analysis of scavenging process for two-stroke marine diesel engine［D］.Dalian,Liaoning:Dalian Maritime University,2013.(in Chinese)
[18]	董雪飞,赵长禄,张付军,等.对置活塞二冲程柴油机换气过程的试验［J］.内燃机学报,2015,33(4):362-369.DONG Xuefei,ZHAO Changlu,ZHANG Fujun,et al.Experiment on the scavenging process of opposed-piston two-stroke diesel engine［J］.Transactions of CSICE,2015,33(4):362-369.(in Chinese)
[19]	LIU Y,ZHANG F,ZHAO Z,et al.Study on the synthetic scavenging model validation method of opposed-piston two-stroke diesel engine［J］.Applied Thermal Engineering,2016,104(1):184-192.
[20]	VAPNIK V N.Statistical learning theory［M］.New York:John Wiley and Sons,1998.
[21]	金鑫,李玉鑑.不平衡支持向量机的惩罚因子选择方法［J］.计算机工程与应用,2011,47(33):129-133.JIN Xin,LI Yulan.Error-cost selection for biased support vector machines［J］.Computer Engineering and Applications,2011,47(33):129-133.(in Chinese)
[22]	王晓初,王士同,包芳,等.最小化类内距离和分类算法［J］.电子与信息学报,2016,38(3):532-540.WANG Xiaochu,WANG Shitong,BAO Fang,et al.Intraclass-distance-sum-minimization based classification algorithm［J］.Journal of Electronics and Information Technology,2016,38(3):532-540.(in Chinese)
[23]	林升梁,刘志.基于RBF核函数的支持向量机参数选择［J］.浙江工业大学学报,2007,35(2):163-167.LIN Shengliang,LIU Zhi.Parameter selection in SVM with RBF kernel function［J］.Journal of Zhejiang University of Technology,2007,35(2):163-167.(in Chinese)
[24]	HOFBAUER P.Opposed piston opposed cylinder (OPOC) engine for military ground vehicles［C］∥2005 SAE World Congress.Washington DC,USA:SAE,2005:578-618.