串联式混合动力推土机节能率的解析分析  

Analysis of energy saving ratio in series hybrid electric bulldozer

作　　者：张宝迪[1] 张欣[1] 席利贺[1] 刘林 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044 [2]潍柴动力股份有限公司新能源技术中心,山东潍坊261001

出　　处：《吉林大学学报（工学版）》2015年第4期1139-1147,共9页Journal of Jilin University:Engineering and Technology Edition

基　　金：'十二五'国家科技支撑计划项目(2011BAG04B02);中央高校基本科研业务费专项项目(2013YJS076)

摘　　要：为探究混合动力推土机的节能效果、原因和潜力,推导出等效节油率与其影响因素的关系方程。将仿真与解析法相结合,分析了节能原因以及部件效率和循环工况对节能效果的影响,计算了等效节油率的极限值。结果表明:在典型循环工况下,节能主要源于电传动路径上较高的部件效率。在部件效率中,发动机效率对等效节油率的影响最显著。等效节油率随着推土阻力或行驶速度的提高而降低。不同优化措施下的节能极限可以利用解析式求得。In order to explore the effect, the mechanism and the potential of energy saving in using series hybrid electric bulldozer, an analytical formula was deduced to present the relationship between the Equivalent Fuel Saving Ratio （EFSR） and the influencing factors. Combing simulation and analytical method, the mechanism of energy saving and the impacts of components＂ efficiencies and drive cycles on the energy saving effect were analyzed. The limit values of the EFSR were calculated. Results show that under typical drive cycle, the energy saving mainly originates from the higher componentg efficiencies in the diesel-electric routine of the powertrain; the engine efficiency has the largest influence on the EFSR among all components＂ efficiencies. With the increase in bulldozing resistance or vehicle speed, the EFSR decreases. Moreover, the energy saving limit under various optimization measures can be calculated using the proposed analytical formula.

关 键 词：机械设计 混合动力系统 推土机 等效节油率 等效能量转换效率 解析法 

分 类 号：TU623.5[建筑科学—建筑技术科学]