发动机平衡轴剪刀齿机构啸叫试验和计算方法研究  

Research on Experiment and Calculation Method of the Whine of Engine Balance Shaft Scissor Gear Mechanism

作　　者：杨江 易敬华 袁懋荣 吴琪 吴广权 占文锋 YANG Jiang;YI Jinghua;YUAN Maorong;WU Qi;WU Guangquan;ZHAN Wenfeng(GAC Automotive Research&Development Center,Guangzhou 511434,China)

机构地区：[1]广州汽车集团股份有限公司汽车工程研究院,广州511434

出　　处：《内燃机工程》2023年第6期62-68,共7页Chinese Internal Combustion Engine Engineering

基　　金：国家重点研发计划项目(2017YFB0103300)。

摘　　要：基于多体动力学理论,采用AVL EXCITE建立了2.0 L发动机平衡轴剪刀齿机构啸叫计算模型,并进行了模型验证,通过振动色谱图和齿轮谐次噪声与总谐次噪声差值综合评价啸叫。针对4缸机平衡轴齿轮系统,分析了平衡轴剪刀齿机构啸叫产生原因,同时分析了剪刀齿机构弹簧刚度和正、反旋向剪刀齿机构对啸叫的影响。研究结果表明:驱动齿轮与剪刀齿机构浮动齿轮传递误差最大,是引起空载啸叫的主要原因;弹簧预紧力矩相同时,弹簧刚度为0.5 N·m/(°)时的传递误差比弹簧刚度为1.0 N·m/(°)时降低约7.2%;反旋向剪刀齿机构为一个减振系统,在2500~4000 r/min工况浮动齿轮角加速度相对正旋向剪刀齿机构降低约25%,在空载加速工况啸叫的改善效果明显。Based on the theory of multibody dynamics,AVL EXCITE was used to establish a calculation model of the whine of 2.0 L engine balance shaft scissor gear mechanism.The model was then validated,and the whine was evaluated through vibration color map and the difference between gear order noise and total order noise.An analysis was conducted on the whining noise generation of the balance shaft scissor gear mechanism in a four-cylinder engine.Simultaneously,the effects of scissor gear mechanism spring stiffness and the direction of rotation(clockwise or counterclockwise)on the whining noise were examined.The research results show that the main reason for the whining noise during idle acceleration condition is the maximum transmission error between the driving gear and the floating gear of scissor gear mechanism.With the same spring preload torque,the transmission error with a spring stiffness 0.5 N·m/(°)decreases by approximately 7.2% in comparison to that with a spring stiffness of 1.0 N·m/(°).The reverse rotation scissor gear mechanism acts as a damping system,reducing the floating gear angular acceleration by about 25% relative to the forward rotation scissor gear mechanism between 2500 r/min and 4000 r/min.This leads to a significant improvement in whining noise during idle acceleration condition.

关 键 词：剪刀齿机构 啸叫 传递误差 反旋向 

分 类 号：TK413.42[动力工程及工程热物理—动力机械及工程]