强化V6柴油机平衡特性与平衡方案

发布时间：2017-12-31 16:02

本文关键词：强化V6柴油机平衡特性与平衡方案　出处：《内燃机学报》2016年05期 　论文类型：期刊论文

【摘要】：针对90,°V6柴油机强化后振动恶化的问题,对发动机平衡特性与平衡方案进行研究.经过发动机振动烈度台架测试结果校核,运用GT-Crank建立强化前发动机刚体动力学模型,在此基础上进行强化后模型计算.结合采用被动平衡与主动结构修改两类措施,提出不同的整机振动抑制平衡方案,包括平衡轴方案、错拐曲轴方案和错拐加平衡轴方案,对比分析3种平衡方案对整机振动的改善效果.结果表明:与其他两个方案相比,在保持柴油机总体型式与参数不变的前提下,采用平衡轴方案能更加有效地改善发动机的整机振动性能,是比较理想的平衡方案.
[Abstract]:Aiming at the problem of the vibration deterioration of 90 掳V6 diesel engine after strengthening, the equilibrium characteristics and balancing scheme of the engine are studied. The results of engine vibration intensity test are checked. The rigid body dynamics model of the pre-strengthened engine is established by using GT-Crank, and the calculation of the enhanced model is carried out on the basis of the model. The passive balance and active structure are combined to modify two kinds of measures. Different balancing schemes for vibration suppression of the whole machine are proposed, including balancing shaft scheme, offset crankshaft scheme and staggered crankshaft scheme. The results show that, compared with the other two schemes, the overall type and parameters of the diesel engine remain unchanged. The balance shaft scheme can improve the engine vibration performance more effectively and is an ideal balance scheme.
【作者单位】：北京理工大学机械与车辆学院;中国北方发动机研究所;
【基金】：高等学校学科创新引智计划资助项目(B12022)
【分类号】：TK421
【正文快照】： V型发动机结构紧凑、体积功率大且刚度强,在大功率、高性能军用及民用车辆上得到了广泛应用.V型高强化柴油机需同时满足较高的动力性、紧凑性和轻量化要求,提高转速和增大爆压等强化途径必然引起整机振动情况恶化、发动机表面辐射噪声增加等后果[1].笔者研究的V型夹角90,°柴

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