In order to solve the problems that 120 series control valves have low relief wave velocity under relief work-ing condition after breaking with small pressure reduction,long air charging time and high energy consumption under emergency brake application,and 120-1 control valve have large the pressure difference of brake cylinder under the full service brake application conditions,low wave velocity and prolonged recharging time after full service brake appli-cation,the following optimezation measures are put forward:the pressure difference of the compressed air between in the train pipe and in the auxiliary reservoir is used to contrd the opening of accelerated relief valve,in order to optimize the acceleration relief effect after service brake application;in the emergency valve part,an emergency acceleration re-lief function is designed to realize the acceleration relief after emergency brake application;in the local air reduction passage,the opening and closing structure controlled by the pressure difference the compressed air between the auxil-iary reservoir and the brake cylinder is designed to realize closing acceleration effect of the service brake application.
NETL
NSTL
万方数据
