1简介我公司于1992、1994年分别购买了GK1F型1004、1015号两台内燃机车,它们由四方机车车辆厂生产。这两台机车均采用JZ-7C型制动机,而后来购买使用的内燃机车采用了JZ-7型制动机,这两种制动机在制动性能上有所不同(见表1)。表1制动机的制动性能技术参数JZ-7型JZ-7C型常用全制 1 Introduction Our company purchased two diesel locomotives of type GK1F 1004 and No. 1015 in 1992 and 1994 respectively, which are produced by Sifang Locomotive and Rolling Stock Plant. The JZ-7C brakes were used on both locomotives and the JZ-7 brake was purchased for diesel locomotives purchased later, both of which differ in braking performance (see Table 1) . Table 1 braking performance of the brake Technical parameters JZ-7 JZ-7C-type commonly used full-made