载货汽车主气瓶不同气压时制动性能分析  

The braking performance analysis of trucks with different pressure in main gas cylinder

作　　者：刘鹏飞[1] 杨良坤[1] 晋杰[1] 

机构地区：[1]交通运输部公路科学研究院汽车运输技术研究中心,北京100088

出　　处：《交通节能与环保》2017年第1期39-46,共8页Transport Energy Conservation & Environmental Protection

摘　　要：汽车综合性能测试仪VGQT测试分析结果表明,货车在主制动气瓶压力不同时,各轴制动气室所能达到的最大压力也不相同[1],除此之外,本试验中N类载货汽车0型制动试验表明,主气瓶气压不同时,各轴气室制动压力变化曲线以及有效最大减速度MFDD也不相同。载货汽车绝大部分是用于长途运输,尤其是N2、N3类载货汽车,由于其满载质量大,长途运输中制动效能对于行驶安全性有着很大的影响,尤其在我国西南部山道纵横,长时间上下坡很容易造成制动器的热衰退,这是引起交通事故的主要诱因之一[2,3]。本文以实际试验结果为研究对象,分析了主气瓶在不同压力下各轴制动气室压力的变化以及0型制动试验中制动气压曲线的变化和有效最大减速度的变化,这对于行驶安全性和燃油经济性都有一定的意义,进而对排放和环境造成影响。The analysis results of the VGQT shows that it will get different maximum of every axle' s chamber with different pressure in main gas cylinder. After finishing the 0 type braking test,we found that the MFDD is different with different main chamber pressure. Most trucks are used to driving with full loads for long distance transportation,so it's very important to have good braking performance,especially for the N2、N3 type trucks. Continued up-and-down will heating the breaking system in west areas of China,this is the main reason leading to traffic accidents. In this paper, we analyzed the pressure of every axle chamber and the braking pressure curve in 0 type breaking test with different pressure in main gas cylinder.All of these will influent the driving safety and fuel economy.

关 键 词：载货汽车 气瓶 气压 制动 性能分析 

分 类 号：U463.52[机械工程—车辆工程]