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4 液压控制系统工作过程分析下面以3N71B型自动液力变速器的液压控制系统为例,分析液压控制系统的工作过程。 3N71B型自动液力变速器采用具有2个行星排的3档行星齿轮机构式变速器(图5-19)。它有5个换档执行机构:倒档及高档离合器、前进离合器、Ⅱ档制动器、低档及倒档制动器和低档单向离合器。5个换档执行机构工作时的组合方式见表5—1。
4 hydraulic control system working process analysis The following to 3N71B automatic hydraulic transmission hydraulic control system, for example, analysis of hydraulic control system work process. The 3N71B automatic hydraulic transmission features a 3-speed planetary gear mechanism with 2 planetary rows (Figure 5-19). It has five shift actuators: reverse and high clutch, forward clutch, second brake, low and reverse brake and low one-way clutch. The combinations of the five shift actuators during operation are shown in Table 5-1.