基于质量守恒方程的高压油管压力控制研究
Research on Pressure Control of High Pressure Tubing Based on Mass Conservation Equation
摘要: 高压油管广泛应用于发动机制造，一种高效合理的高压油管压力控制方案，对推动发动机制造业和经济社会发展具有十分重要的意义。通过对高压燃油系统工作原理的研究，提出了一种新的高压油管压力控制方案。首先，根据高压油管进油和喷油质量守恒关系，分别推导出了高压油管在恒压和不恒压条件下的压强与时间的微分方程模型。其次，推导出了高压油管油泵凸轮柱塞运动的角速度计算公式。进一步，考虑到高压油管恒压条件下多个喷油嘴工作的情况，分别讨论了多个喷油嘴不同工作情况下的控制方案。最后，通过对数据进行拟合，检验了模型的准确性。数值结果表明，在恒定压力下单向阀每次开启时长为0.64 ms，高压泵凸轮柱塞角速度为2.7543 rad/ms。多个喷油嘴同时和不同时工作时，高压泵凸轮柱塞角速度大小分别为5.5086 rad/ms、1.37715 rad/ms。此外，本文根据结果制定了一种高压油管压力控制方案，为发动机高压油管的发展提供了理论依据。
Abstract: High-pressure tubing is widely used in engine manufacturing. An efficient and reasonable high- pressure tubing pressure control scheme is of great significance for promoting engine manufacturing and economic and social development. Through the research on the working principle of high-pressure fuel system, a new high-pressure fuel pipe pressure control scheme is proposed. Firstly, according to the mass conservation relationship between high-pressure oil pipe feeding and spraying, the differential equation model of pressure and time of high-pressure oil pipe under constant pressure and non-constant pressure conditions is derived respectively. Secondly, the formula for calculating the angular velocity of the cam plunger movement of the high-pressure tubing oil pump is derived. Further, considering the operation of multiple injectors under the constant pressure condition of high pressure tubing, the control schemes of different injectors under different working conditions are discussed respectively. Finally, the accuracy of the model was tested by fitting the data. The numerical results show that the constant value of the check valve is 0.64 ms at a constant pressure and the angular velocity of the high pressure pump cam plunger is 2.7543 rad/ms. When multiple injectors are working at the same time and at different times, the angular velocity of the high pressure pump cam plunger is 5.5086 rad/ms and 1.37715 rad/ms, respectively. In addition, based on the results, a high pressure fuel pipe pressure control scheme is developed, which provides a theoretical basis for the development of high-pressure fuel pipe.
文章引用：陈兴志, 黄飞翔, 王代文, 乐文涛, 刘乃瑶. 基于质量守恒方程的高压油管压力控制研究[J]. 应用数学进展, 2019, 8(11): 1732-1744. https://doi.org/10.12677/AAM.2019.811203

参考文献

[1] 庄保怡, 甘海燕, 王锋, 梁刚. 当代船用中高速柴油机的发展和对策[J]. 船舶物资与市场, 2002(5): 19-22.
[2] 赵学亭. PA6柴油机高压油管压力波和针阀升程的测量与分析[J]. 柴油机, 1990(3): 15-16.
[3] 王美丽. 高压油管对燃油喷射特性影响的计算研究[J]. 车用发动机, 1991(6): 44-48.
[4] 殷子嘉. 高压油管中燃油压力波传递速度的研究[J]. 上海交通大学学报, 1992(1): 47-51.
[5] 韦海燕, 黄晓冬. 出油阀偶件密封性与高压油管压力波分析[J]. 汽车技术, 2003(7): 23-25.
[6] 黄立贤, 李全, 杨鹏, 李海文. 高压油管自增强处理[J]. 柴油机, 2009, 31(2): 45-47+54.
[7] 李丕茂, 张幽彤, 谢立哲. 喷射参数对共轨系统高压油管压力波动幅度的影响[J]. 内燃机学报, 2013, 31(6): 550-556.
[8] Zhang, J.-P., Ou, D.-S. and Ouyang, G.-Y. (2005) Experiment for Analyzing Character of High Pressure Common Rail Injection System. Chinese Internal Combustion Engine Engineering, 26, 13-16.
[9] Lin, Q., Yang, Y.L., et al. (2007) Study on High Pressure Fuel Pipe Squeeze in Diesel Engine. Rare Metals Letters, 26, 38-40.
[10] Huang, T.X. and Gao, S.L. (2009) Adaptive Fuzzy Sliding Mode Control of the Common Rail Diesel Injection System. 2009 2nd International Conference on Power Electronics and Intelligent Transportation System, Shenzhen, 19-20 December 2009, 161-165.
[11] He, J.-H., Wang, B.-T., Zhang, A.-Q., Gong, Y.-M. and Yang, L. (2009) Development of Control System for High Pressure Common Rail Injection System in Single-Cylinder Engine. Chinese Internal Combustion Engine Engineering, 2009.
[12] Liu, Z.-M., Shao, L.-M. and Ouyang, G.-Y. (2011) Optimization Study on Injection System Parameters of Common Rail Diesel Engine Based on Approximate Model. Chinese Internal Combustion Engine Engineering, 2, 969-970.
[13] Hong, S., Shin, J. and Sunwoo, M. (2012) Common Rail Pressure Controller for Diesel Engines Using an Empirical Model. 2012 IEEE Vehicle Power and Propulsion Conference, Seoul, 9-12 October 2012, 887-892.
[14] Jian, L. and Hui, X. (2015) Design and Experimental Validation of a Model-Based Common Rail Pressure Controller for On-Road Diesel Engines. Journal of Tianjin University (Science and Technology), No. 10, 921-928.
[15] 刘琦, 刘云生, 陈新传, 霍柏琦, 欧阳光耀. 超高压喷射条件下非常态燃油缸内喷雾特性[J]. 中南大学学报(自然科学版), 2019, 50(2): 480-486.
[16] 高教杯全国大学生数学建模竞赛官网. 2019年A题“高压油管压力控制”[Z]. http://www.mcm.edu.cn/html_cn/node/b0ae8510b9ec0cc0deb2266d2de19ecb.html

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