Diesel generator governor belongs automatic adjustment device. When the external load changes, it can automatically adjust with changes in the load amount of oil, so that the engine speed is stable within a certain speed range. But different types of governor still works a little different, here we introduce a type of diesel engine governor and how they work.

1 Why do you want to install the engine governor

Speed characteristics of the fuel injection pump diesel changing conditions is very unfavorable. When a slight change in the engine load, engine speed result in large changes. When the load decreases, the speed increases, resulting in piston speed increases in circulating oil increases circulation has led to an increase in the speed of oil rises further, so keep a vicious cycle, resulting in increasing engine speed, the last coaster ; the other hand, when the load increases, the speed is reduced, the speed is reduced to reduce lead in the piston cycle oil, oil circulation in turn leads to reduced speed is further reduced, so that continuous vicious cycle, resulting in increasing the engine speed is low, the last flameout.

To change this vicious cycle, it is desirable to have a change according to the load and automatically adjust the oil inside. The engine speed range specified in the stable operation of the automatic control mechanism. Mobile fuel rod, you can change the oil in circulation, so that the engine speed is essentially the same. Therefore, the diesel engine to meet the requirements, you must install the governor.

2 fuel pump speed characteristics

Fuel injection pump in each working cycle depends mainly on regulating rod position. In addition, the engine speed is affected. When adjusting the rod in the same position, with the engine crankshaft speed increases, a slight increase in the effective stroke of the plunger, and the oil was also a slight increase; Conversely, a slight decrease in oil supply. This oil was changing relationship with the speed fuel pump called the speed characteristics.

3. Governor function, form

According to the governor engine load variation is automatically adjusted in the oil, thus ensuring a stable rotational speed of the engine in a small range.

Type: Press the function of two-speed governor, governor at full speed, fixed speed governor and mechanized units governor; divided by the speed sensor pneumatic governor a mechanical centrifugal governor 9 and complex desktopgovernor.

4 two-speed governor

Two speed regulators for automotive diesel engines for use under normal conditions, it can only restrict diesel automatic stabilizers and the minimum and maximum speed, but by the middle of the driver's control at all speed ranges.

5. Mechanical centrifugal governor works

Mechanical centrifugal speed governor is conducted in accordance with the spring force and the centrifugal force equilibrium, the work, the spring force is always circulating oil to the fuel rod in the direction of increasing centrifugal force always moving Chang and fuel rod to cycle reduction in the supply direction. When the load decreases, the speed increases, the centrifugal force is greater than the spring force, fuel rod moves to reduce cycle oil in the direction of oil in circulation is reduced, speed is reduced, the centrifugal force and less than the spring force, fuel rod ED cycle for move in the direction to increase the oil circulation in the oil increases, and the speed increases, the centrifugal force and the spring force until the balance of fuel rod was unchanged. So basically stable at speed within a small range.

Conversely when the load increases, the speed is reduced, the spring force is greater than the centrifugal force, the fuel rod in the direction of increasing fuel cycle moving in increased fuel cycle, the speed increases, the centrifugal force is less than the spring force and the oil supply rod loop for ED move in the direction of decreasing the oil circulating in the oil is reduced, and the speed is reduced until the centrifugal force and the spring force balance.