| 2缸发动机平衡机理研究及悬置系统优化设计 |
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| 引用本文： | 余良渭,上官文斌,唐颖,李锦庭.2缸发动机平衡机理研究及悬置系统优化设计[J].车用发动机,2015(6):1-7. |
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| 作者姓名： | 余良渭 上官文斌 唐颖 李锦庭 |
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| 作者单位： | 1. 华南理工大学机械与汽车工程学院,广东 广州,510641;2. 上汽通用五菱汽车股份有限公司,广西 柳州,545007 |
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| 摘 要： | 以2缸发动机为研究对象,分析发动机曲柄活塞机构的运动规律,推导发动机在实际工作时产生的不平衡激励力和力矩,研究2缸发动机的旋转惯性力和往复惯性力的平衡方法,对一台2缸发动机在不同平衡条件下产生的激励进行数值模拟。在此基础上,建立2缸发动机悬置系统优化模型,以悬置系统的固有频率、能量解耦率和悬置动反力为优化目标,用序列二次规划法进行多目标的优化,对一台2缸柴油机进行了悬置系统优化设计。分析结果表明该优化方法可以有效减少发动机传递给车身的激励。
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| 关 键 词： | 2 缸发动机 平衡机理 悬置系统 多目标优化 |
Balance Mechanism and Optimization of Mounting System of 2-Cylinder Engine |
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| Abstract: | Taking a 2-cylinder engine as an object,the motion law of piston-crank mechanism was analyzed and the unbalanced forces and moments under actual operating condition were deduced.Then the balance method of rotating and reciprocating iner-tia forces for the 2-cylinder engine was researched and the impacts under different balance conditions were simulated.Moreo-ver,the optimized model of mounting system for the 2-cyliner engine was built and the optimization of natural frequency,ener-gy decoupling rate and mount dynamic reaction force were carried out with the sequence quadratic programming (SQP)method. The optimization of mounting system for the 2-cylinder engine shows that the method can reduce the engine excitation trans-ferred to vehicle body effectively. |
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| Keywords: | 2-cylinder engine balance mechanism mounting system multi-objective optimization |
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