1.油门控制系统工作原理液压挖掘机发动机油门控制系统主要由油门旋钮6、控制器9、油门电动机12、转速传感器7等电器元件组成,其原理如图1所示。该油门控制系统用于实现发动机转速的智能控制,这种智能控制可有效利用发动机功率,使发动机动力与液压系统取得最佳匹配效果。当启动开关1打到ON挡时,电 1. Throttle control system works hydraulic excavator engine throttle control system mainly by the throttle knob 6, the controller 9, the throttle motor 12, the speed sensor 7 and other electrical components, the principle shown in Figure 1. The throttle control system is used to intelligently control the engine speed. This intelligent control can effectively utilize the engine power to achieve the best match between the engine power and the hydraulic system. When the start switch 1 hit the ON block, electricity