In regards to engine speed, what does the governor primarily control?

In regards to engine speed, what does the governor primarily control?

• A. Engine torque
• B. Fuel injection
• C. Oil pressure
• D. Exhaust flow

Answer: (B)

A governor keeps engine speed steady by controlling how much fuel the engine receives. It senses how fast the engine is turning and adjusts the fuel injection to hold the speed at the desired setting. If load increases and the speed would drop, the governor increases fuel delivery to bring the speed back up. If the speed rises too high, it trims back fuel delivery to bring it down. So the primary action is regulating fuel injection, which directly sets how much energy the engine produces and thus its speed. Torque, oil pressure, and exhaust flow aren’t directly controlled by the governor; they change as a consequence of the fuel being burned and the resulting engine speed.

A governor keeps engine speed steady by controlling how much fuel the engine receives. It senses how fast the engine is turning and adjusts the fuel injection to hold the speed at the desired setting. If load increases and the speed would drop, the governor increases fuel delivery to bring the speed back up. If the speed rises too high, it trims back fuel delivery to bring it down. So the primary action is regulating fuel injection, which directly sets how much energy the engine produces and thus its speed. Torque, oil pressure, and exhaust flow aren’t directly controlled by the governor; they change as a consequence of the fuel being burned and the resulting engine speed.