Automatic idling control method for digger engine

摘要: The invention discloses a digger engine auto idling control method, characterized in that: setting sub-target speed lower than working-state target by 50-300r/min; high higher low 300-500r/min; precursor pressure threshold valve 5-20 Pa; first idle time and second time; the working state, when is zero lasts time, regulating to state lasting then state; greater less threshold, speed. And adopts two-stage reduction, overcoming defect of energy consumption caused big rise fall speed; uniting power, economy quickness.