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The main functions of the diesel generating set controller

2014-10-24 14:19      Click:



Diesel generating set controller Main functions including the automatic control of diesel engine, generator automatic control and operation control of the automatic control system of diesel engine.Automatic control of diesel generator including starting system, charging system, instrument system, automatic heating equipment, protection and automatic control the rotational speed of diesel engine, etc.

1. Start the system:Diesel engine start is commonly electric start way (with battery), start system including battery, start, contactor, start, start button and the related control circuit of the motor.Startup: press the start button SB, start the contactor KM off, start the motor and diesel engine flywheel meshing, at the same time, the starting motor rotation and diesel engine rotates.When the engine starts, the immediate release of start button SB, starting motor.

2. The charging system: when the diesel engine at runtime, on diesel engine own charging generator to the battery charging, charging system generally includes charging generator, excitation regulator, charging current meter and related control circuit.

3. The instrument system:Instrument configuration according to the different diesel version is different, but generally consists of tachometer, oil pressure gauge, the oil temperature table, water temperature table and charging current meter instrument, etc.

4. Automatic heating device: on the diesel engine, general equipped with cooling water heating device automatically, when the generator set in the standby state, should be in a state of heat engine, diesel engine for generator set in the line loss of power, the starting power within 15 s camp and work load.When the water temperature is less than 30 ° C temperature control touch point contact, KM and heaters work EH.When the water temperature rise of up to 50 ° C, temperature control off contact, release of KM, heater power EM.

5. Automatic regulating the rotational speed of diesel engine:Diesel engine speed generally adjust automatically by the regulator, electronic governor general points, mechanical and hydraulic type 3 kinds.Regulator by speed detection, control and actuator of three parts, the control system is a closed loop system, when the diesel engine speed decreases with the increase of the load, the regulator through the actuator step on the gas, make speed pickup.On the other hand, when the diesel engine rotating speed due to the decrease of the load increases, the actuators reduce throttle, make speed, ensure that the diesel engine running under the rated speed.


6. Protection device: diesel engine generally has the following several kinds of protection device, by detecting lube oil pressure is lowSensors,High cooling water temperature sensor and speed detection device used for overspeed protection.


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