There are two main types of governors: mechanical governors and electronic governors. Mechanical governors use a mechanical linkage to connect the governor to the engine's fuel injection system. Electronic governors use an electronic sensor to measure the engine speed and then use this information to control the fuel flow.
Mechanical governors are typically used in older diesel engines, while electronic governors are more common in newer engines. Electronic governors are more accurate and responsive than mechanical governors, and they can also be used to control other engine parameters, such as the air-fuel ratio and the exhaust gas temperature.
The governor is an essential part of a diesel engine, as it helps to maintain the engine speed within a safe range. Without a governor, the engine could overspeed and damage itself.
Here is a more detailed explanation of how a mechanical governor works:
1. The governor is connected to the engine's fuel injection system by a mechanical linkage.
2. As the engine speed increases, the governor moves a lever that reduces the amount of fuel flowing to the injectors.
3. This causes the engine speed to decrease.
4. As the engine speed decreases, the governor moves the lever back to its original position, allowing more fuel to flow to the injectors.
5. This causes the engine speed to increase.
The governor constantly adjusts the fuel flow to maintain the engine speed at a constant level.
