摩托车CG系列发动机配气凸轮机构最优尺度综合研究与应用  

RESEARCH AND APPLICATION OF OPTIMUM DIMENSION SYNTHESIS OF VALVE TRAIN IN CG SERIES MOTORCYCLE ENGINE

作　　者：宋立权[1] 潘玉蕊[1] 唐彬[1] 黄静[1] 

机构地区：[1]重庆大学机械工程学院,重庆400030

出　　处：《机械工程学报》2007年第7期221-225,共5页Journal of Mechanical Engineering

摘　　要：摩托车CG系列发动机配气的进、排气机构由同一凸轮驱动,从设计的观点分别为逆向型和同向型,在进、排气机构设计参数相同的条件下,所设计出的两凸轮轮廓型线是不同的。针对工程设计实践,应用凸轮机构设计的基本理论,分析设计参数的内在联系,研究出摩托车CG系列发动机配气凸轮机构最优结构尺度综合的计算方法,揭示出配气机构的各设计参数的匹配内涵和设计机理,所导出设计计算方法应用于CG150发动机的工程设计并经试验验证,使发动机由原最大功率8.51 kW(升功率56.7 kW)提高到9.7 kW(升功率64.7 kW),噪声降低约5 dB,可减小发动机高速运转的冲击与噪声并具有良好的外特性。The cam, by which the intake and the exhaust mechanisms in the CG motorcycle engine are both driven, can be divided into two types-the equidirectional and the reverse in the design perspective. Under the same parameter of the two types, the cam profiles designed in different ways are different. The paper aims to apply the basic theory of the cam, in the project design, to analyze the intrinsic relation of design parameters, calculate the optimum structure synthesis of valve train in the CG motorcycle engine and reveal the matching intension and the design principle of the parameters. The calculating method has been tested in the design of the CG150 engine and the results show that the maximal engine power is improved from 8.51 kW （liter power is 56.7 kW） to 9.7 kW （liter power is 64.7 kW）, and the noise level is reduced by approximately 5 riB, reducing the impact noise while the engine running at a high speed, and better characteristics is achieved.

关 键 词：摩托车 CG系列发动机 配气凸轮机构 最优尺度综合 

分 类 号：TK413[动力工程及工程热物理—动力机械及工程] TK401