Perkins diesel generator set water temperature is the main reason for high

The main reasons for the high water temperature of diesel generator set are as follows:

1. Improper selection of coolant or insufficient water quantity

Improper selection of coolant or insufficient water will lead to cooling performance decline, so that the temperature of the coolant increases.

2. The water radiator is blocked

The heat sink of the water radiator is lodging in a large area, and there is mud debris between the heat sink, which will prevent the distribution of heat. Especially when the surface of the water radiator is stained with oil, the thermal conductivity of the mud mixture formed by dust and oil is smaller than the scale, which seriously hinders the heat dissipation effect.

3. The water temperature gauge or warning light is wrong

Including water temperature sensor damage; Line or indicator failure, resulting in false alarm. In this case, use a surface thermometer to measure the temperature at the water temperature sensor and check whether the water temperature indicator is consistent with the actual temperature

4. Fan speed is too low, blade deformation or reverse installation

Loose fan tape causes the fan to slip, causing the fan speed to be too low and the air supply effect to be weakened. If the tape is found to be too loose, it should be adjusted. If the rubber layer is aged, damaged or the fiber layer is broken, it should be replaced.

5. The cooling water pump is faulty

Damage to the pump itself, too low speed, excessive scale deposition in the pump body, and narrow path will make the coolant flow smaller, the heat dissipation performance is reduced, and the oil temperature of the diesel generator set rise.

6. The thermostat is faulty

The method of checking the thermostat is good or bad; Remove the thermostat and suspend it in a container with warm water. At the same time, put a thermometer in the water and heat it from the bottom of the container. Observe the temperature at which the thermostat valve starts to open and fully open.

7. The cylinder pad is damaged

The method to determine whether the cylinder pad is burned is; Turn off the diesel engine, wait for a moment, then restart the engine and increase the speed. If at this time, a large number of bubbles can be seen on the water radiator liquid cover, and small water droplets are discharged with exhaust gas in the exhaust pipe, it can be concluded that the cylinder pad is damaged.

8. Improper injection time

The fuel injector is not working well. Premature or delayed oil supply advance Angle can lead to the increase of contact area between high temperature gas and cylinder wall during combustion, and the time is prolonged, the heat transferred to the coolant increases, and the temperature of the coolant increases. At this time, the diesel engine power decreases and fuel consumption increases. If the injection pressure of the injector drops, the fog flower is bad, it will make the fuel can not be completely burned, and the increase of the exhaust temperature indirectly leads to the rise of the water temperature.

9, diesel engine overload operation

When the diesel engine of the generator is overloaded, the amount of oil supplied will be too much. When the heat generated exceeds the heat dissipation capacity of the diesel engine, the temperature of the coolant of the diesel engine will rise. At this time, the diesel engine is mostly black smoke, fuel consumption increases, abnormal sound and other phenomena.

Jiangsu Meiao Power Technology Co., Ltd. is an important manufacturer of diesel generators. The company mainly manufactures and sells diesel generator sets with power of 3-3000kW, mobile power station of 24-600kW, Marine emergency diesel generator set of 24-800kW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, static speaker, mobile lighthouse, container, etc.) diesel generator At the same time, we are engaged in generator set maintenance and after-sale service of generator set accessories.