摘要
履带车辆在越野工况下行驶过程中,发动机常处于动态工况,基于发动机稳态工况建立的换挡规律无法使履带车辆发挥最大动力性,在构建考虑内部功率损失的发动机模型、液力变矩器与发动机共同工作动态模型,考虑换挡工况的传动系统输出转矩模型的基础上,建立履带车辆传动能量损失模型,实现越野工况履带车辆的驱动转矩计算和能量损失计算.在对比基本换挡规律与修正换挡规律的条件下,履带车辆的能量损失定量计算结果验证了修正换挡规律对于提高履带车辆能量利用率的有效性,为研究履带车辆换挡策略提供了理论依据和评价方法.
The engine often works with dynamic conditions during the tracked vehicle travels on off-road.To im-prove dynamic performance of the tracked vehicle and to overcome the insufficiency of some shift schedule de-signed based on engine steady state characteristics,an transmission energy loss model was established for engine in this paper,considering multi-model functions including engine internal power loss,dynamic engine working with torque converter,and the output torque of transmission system in different shifting condition.Moreover,the transmission energy loss model was arranged to compute the drive torque and energy loss for the tracked vehicle under off-road conditions.Compared with energy loss calculation result based on the basic shift rules,the energy loss calculation results according to the modified shift rules show the modified shift strategy can make the tracked vehicle better power efficiency.The proposed transmission dynamic model and energy loss computation model provide an effective tool to study and evaluate the shift strategy of tracked vehicles.
作者
郭智蔷
吴维
罗俊林
GUO Zhiqiang;WU Wei;LUO Junlin(School of Mechanical and Electrical Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;China North Vehicle Research Institute,Beijing 100072,China)
出处
《北京理工大学学报》
北大核心
2025年第8期771-779,共9页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金资助项目(52302484)
国家重点实验室基金一般项目(NKL20811202301017230207)。
关键词
履带车辆
换挡规律
能量损失
评价方法
传动系统模型
tracked vehicle
shift schedule
energy loss
evaluation method
transmission model
