摘要
针对混联式混合动力汽车能量利用效率低,动力传递损耗大的问题,对混联式混合动力汽车的液压控制系统进行了研究;进行了离合器动力学、安全阀状态及液压控制系统中的流体力学分析;采用工况分析与参数化设计理念,对P2混联式混合动力汽车的液压控制系统进行了设计研究,该设计的独特之处在于改变了汽车不同工作模式的切换方式;经过实验测试,液压控制系统压力设置为3 MPa,润滑阀通径为14 mm,平衡弹簧刚度为4.5 N/mm,节流孔直径为1.2 mm时,完全开启后安全阀压力可稳定在16 bar,且该控制系统利用离合器即可完成工作模式的切换,有效提高了汽车的能量利用效率,并降低了动力传递过程中的损耗;研究设计的液压控制系统实现了新能源汽车驾驶体验的提升及汽车的节能减排。
In response to the low energy utilization efficiency and high power transmission loss of hybrid electric vehicles,the hydraulic control system of hybrid electric vehicles was studied.A fluid dynamics analysis was conducted on the clutch dynamics,safety valve status,and hydraulic control system.The hydraulic control system of P2 hybrid electric vehicles was designed and studied by using the working condition analysis and parametric design.The unique feature of this design was that it changed the switching mode of different working modes of the vehicle.After experimental testing,when the hydraulic control system pressure was set to 3 Mpa,the lubrication valve diameter was 14 mm,the balance spring stiffness was 45 N/mm,and the throttle leakage diameter was 1.2 mm,the pressure of the safety valve could stabilize at 16 bar after fully opened,and the control system utilized the clutch to achieve the switching of the working mode,effectively improving the energy utilization efficiency of the car and reducing loss during power transmission.The designed hydraulic control system improves the driving experience of new energy vehicles,and achieves energy conservation and emission reduction.
作者
孙希岗
何海龙
SUN Xigang;HE Hailong(Automotive Engineering Department,Kaifeng Technician College,Kaifeng 475000,China;School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China)
出处
《计算机测量与控制》
2024年第8期209-214,221,共7页
Computer Measurement &Control
关键词
汽车
混合动力
液压控制系统
离合器
安全阀
automobiles
hybrid power
hydraulic control system
clutch
safety valve
