Shop manual máy đào HuynDai R250: An toan, cấu trúc, sơ đồ điện, thủy lực,
5-6GROUP 3 AUTOMATIC DECELERATION SYSTEMP MFuel injectionpumpAccelactuatorMotor drive signalPotentiometer signalCPU controllerMain control valveWork equipmentpressure switchAuto decel switch signalPressure switch signalAccel dial Accel dial signalTravel oil pressure switchIf all the work equipment control levers including swing and travel levers are at neutral for at least 4seconds, CPU controller drives the governor motor to reduce the engine speed to 1200rpm. As theresult of reducing the engine speed, fuel consumption and noise are effectively cut down during non-operation of the control levers.When the Auto decel lamp is turned off by pressing the switch or any control lever is operated, thereduced engine speed rises upto the speed set before deceleration in a second.1. WHEN AUTO DECEL LAMP ON2. WHEN AUTO DECEL LAMP OFFThe engine speed can be set as desired using the engine speed switch, and even if the control leversare neutral, the engine speed is not reduced.Note : Auto decel function can be activated when accel dial position is over 4.TimeEngine rpmAccel dial set rpm1200 rpm4secMax1.5secMax1.5secLeveroperationLeverneutral21075MS0421075MS05 . 5-6 GROUP 3 AUTOMATIC DECELERATION SYSTEMP MFuel injectionpumpAccelactuatorMotor. engine speed, fuel consumption and noise are effectively cut down during non-operation of the control levers.When the Auto decel lamp is turned off by pressing