发动机缓速器制动功率连续可调的方法及性能研究  

Method and Performance Study of Engine Retarder With Continuously Variable Brake Power

作　　者：董颖[1] 赵迎生[1] 

机构地区：[1]浙江师范大学工学院,浙江金华321004

出　　处：《机械设计与制造》2017年第4期47-49,共3页Machinery Design & Manufacture

基　　金：浙江省自然科学基金资助项目(LY12E05003)

摘　　要：分析了发动机缓速器的工作过程,建立了发动机缓速器的数学模型,采用仿真计算及试验测量的方法对发动机缓速器的功率调整方法和制动性能进行了研究,结果表明,在任一发动机转速下,有一最佳的气门开度使发动机辅助制动功率达到最大,转速越高,此最佳气门开度越大,通过调整排气门的开度和排气蝶阀的开闭,可以实现发动机辅助制动时多种工作状态的转换,在同一转速下得到较大的连续变化的辅助制动功率,从而获得不同转速下的制动面工况,满足不同行驶条件下的辅助制动需求。Analyzed the working process of engine retarder and set up the mathematical model, studied the brake power and the methods of power adjustment in engine retarder by numerical simulation and experiment test, the results show that, at any speed of engine, there is an optimum valve lift to achieve the peak brake power of engine retarder, this optimum valve lift goes increase with the engine speed, by change the lift of exhaust valve and open/close the butterfly valve, we can convert the engine auxiliary brake process in several different mode, get a bigger and continuously variable auxiliary brake power at the same rotating speed, thereby obtaining an area of braking power under different speeds, to meet the demands in variability driving conditions.

关 键 词：辅助制动 发动机缓速器 制动功率 连续变化 

分 类 号：TH16[机械工程—机械制造及自动化] U464.149[机械工程—车辆工程]