农用车柴油发动机润滑管路系统优化

Optimization of Lubricating Pipeline System for the Diesel Engine of the Agricultural Vehicle

为进一步提高我国农用柴油发动机工作效率,针对其润滑系统展开了优化研究。以充分理解润滑系统的结构组成与作业原理为出发点,密切结合系统的流体动力学规律,建立管路的压力损失数学模型,进而实施润滑关键部件的优化设计与仿真分析,并开展优化后的农用车田间作业试验。结果表明:在一定的试验条件下,润滑系统运行良好,可以充分地将润滑油送至发动机的各润滑节点,且管路尺寸经优化布局,系统的整体压力损失占比相对减少4.14%,润滑系统效率和发动机效率分别相对提升了7.23%和8.95%,能够很好地满足农用车不同田间作业需求。优化方案结合了模拟仿真与实地试验的双重验证思维,可作为类似农机装备设计与创新的参考依据,具有一定的推广价值。

In order to further improve the working efficiency of the diesel engine in the field of agricultural machinery in China,the optimization of its lubrication pipeline system was studied.Based on the full understanding of the structure and operation principle of the lubrication system,closely combined with the law of fluid dynamics of the system,the mathematical model of the pressure loss of the pipeline was established,then the optimization design and simulation analysis of the key lubrication components were carried.Through carrying out the field sowing experiment of the optimized agricultural vehicle,the results showed that:under certain test conditions,the lubrication system run well,and could fully send the lubricating oil to each lubricating node of the engine.After the optimal layout of pipeline size,the overall pressure loss of the system was relatively reduced by 4.14%,and the efficiency of the lubrication system and the engine was relatively increased by 7.23%and 8.95%respectively.It could meet the different field operation requirements of agricultural vehicles;the experimental design was reasonable and could be implemented.The optimization scheme combined the dual verification thinking of the simulation and field test,which would be used as a reference for the design and innovation of similar agricultural machinery and equipment,and would have a very strong promotion value.