【作者】 潘光艳；

【导师】 李晓波；

【作者基本信息】 哈尔滨工程大学 ， 轮机工程， 2008， 硕士

【摘要】 TBD620系列柴油机系DEUTZ公司设计,是TBD604B柴油机的改进机型。为了进一步提高TBD620系列柴油机的功率,提高可靠性,降低成本以及更加便于维修与保养,就需要进行大量的改进。在改进与优化的过程中,为了更好确定参数变化对柴油机性能的影响,同时降低试验成本,需要设计TBD620单缸柴油机,在单缸试验柴油机上进行参数优化,最终完善机型的改进。本论文主要进行TBD620单缸柴油机的总体设计研究。TBD620单缸机主要是在TBD620V16的基础上设计,尽量保证零部件与原来的一致性。本论文针对冷却系统、润滑系统、配气机构、燃油系统及机体、曲轴、活塞、连杆、气缸盖等主要零部件进行了详尽的设计研究,最后对平衡系统进行设计,旨在满足柴油机性能要求。同时,利用AVL-B00ST软件对TBD620单缸柴油机进行工作过程计算,分析其性能。同时分析压比,喷油提前角以及配气正时对性能的影响,在原机的基础上提出对这几个参数的改进建议,最后计算整机在部分工况下的性能。利用ANSYS软件对连杆进行强度计算,主要从疲劳强度方面进行考虑,并对变形量进行核算,同时用传统算法验证软件仿真计算的正确性,并进行安全系数校核。利用ANSYS软件进行曲轴强度计算,分析其安全系数。应用PRO/E进行建模,利用ANSYS软件进行活塞热分析计算。通过有限元分析,获得了该柴油机活塞温度场、热流密度分布情况,为该系列柴油机活塞的改进提供了一定的理论依据。更多还原

【Abstract】 The TBD620 series diesel engines are designed by DEUTZ CO., In order to improve the power and credibility, decline the cost of the TBD620 series diesel engines which were easier to maintain, we need to carry on a great deal of improvement. During the improvement and optimization, in order to confirm the influence on the diesel engine performance through the parameter varieties while decline the experimental cost, demand for design the TBD620 single cylinder diesel engine, optimize parameters by experiment and finally improve the engine.In this dissertation, the whloe of the engine was designed. The design of TBD620 single cylinder diesel engine was based on TBD620V16 to confirm the coherece of the primary parts. The cooling system, lubricating system, valve system, gear training, fuel supply system, engine block, crankshaft, pistons, connecting rods and cylinder covers were carefully designed to achieve the design parameters.In addition, calculate the operating process using AVL-BOOST and analyze the performance. Meawile analyze to pressure ratio, fual injection advance jungle and cam timing to the influence on the performance, and then put forward suggestions of the improvement toward these parameters. Finally calculate performance of part conditions of the whole engine.Besides, calculate the intensity of the connecting rods using ANSYS. The fatigue intensity is considered to check changes.and compare the results of the traditional calculate to prove the former way is right. Analyze the safe coefficient.calculate the intensity of the crankshaft using ANSYS. And mainly calculate the crankshaft intensity, analyze the safe coefficient. Build the model with Pro/E and calculate the thermal analyse of the piston using ANSYS. Through analyse of the infinite element, we get the complexion of thermal distributing and the density of heat of this piston in the engine. These can provide theoretic evidence to improve this piston of the engine.更多还原