曲轴偏置式三缸机的平衡性理论分析与研究

发布时间：2018-04-24 14:38

本文选题：内燃机 + 曲轴偏置　；参考：《内燃机工程》2016年04期

【摘要】：为研究曲轴偏置式发动机的平衡性,应用数学几何理论推导并改进了传统曲轴偏置式发动机曲柄连杆机构的运动学解析方程。基于改进的解析方程对偏置式三缸发动机的平衡性进行分析研究,推导出应用单轴平衡与曲轴过量平衡方法完全平衡一阶往复惯性力矩的平衡轴与平衡重布置相位计算公式;应用虚拟样机技术,对采用同一套曲柄连杆活塞组的偏置式三缸机和对心式发动机的平衡性进行对比分析验证。研究结果表明:曲轴偏置未改变三缸发动机平衡性但平衡相位发生了改变,改进的平衡理论可以准确描述曲轴偏置发动机运动规律,新的平衡方法可以实现一阶惯性力矩的全平衡,相比传统平衡方案提高了剩余往复惯性力矩幅值的均匀性,最大幅值减小约14.5%。
[Abstract]:In order to study the balance of crankshaft offset engine, the kinematics analysis equation of traditional crankshaft offset engine crank linkage mechanism is derived and improved by applying mathematical geometry theory. Based on the improved analytical equation, the equilibrium of offset three-cylinder engine is analyzed and studied, and a formula for calculating the phase of balancing shaft and balancing weight arrangement by using the method of single-axis balance and crankshaft excess balance is derived. By using virtual prototyping technology, the balance of the offset three-cylinder engine and the countercore engine with the same crank and connecting rod piston group is compared and verified. The results show that the balance of three-cylinder engine is not changed by crankshaft bias, but the balance phase is changed. The improved balance theory can accurately describe the motion law of crankshaft offset engine. The new equilibrium method can achieve the full balance of the first order inertia torque. Compared with the traditional balance scheme, the uniformity of the amplitude of the residual reciprocating inertia torque is improved, and the maximum value is reduced by about 14.5.
【作者单位】：天津大学机械工程学院;天津大学内燃机研究所;
【基金】：国家“八六三”高技术研究发展计划项目(2014AA041501)
【分类号】：U464

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