What allows accurate change in fuel quantity as engine speed in low change?

What allows accurate change in fuel quantity as engine speed in low change?

• A. Metering
• B. Fuel Injector
• C. Governor
• D. Flow Control Valve

Answer: (A)

Metering is the system that controls the exact amount of fuel delivered for each engine condition, especially when speed changes are small. As the engine speed changes slightly, the metering mechanism adjusts the fuel flow to keep the air–fuel ratio correct, ensuring smooth operation and avoiding rough idle or hesitation. This precise adjustment is achieved by calibrating how much fuel the fuel path allows under the current conditions, whether through jets, valves, or electronic control that responds to speed and load signals. The other components contribute to fuel delivery or speed control, but accurate, small-step changes in fuel quantity are governed by metering, which directly sets the amount of fuel based on the engine’s current demand.

Metering is the system that controls the exact amount of fuel delivered for each engine condition, especially when speed changes are small. As the engine speed changes slightly, the metering mechanism adjusts the fuel flow to keep the air–fuel ratio correct, ensuring smooth operation and avoiding rough idle or hesitation. This precise adjustment is achieved by calibrating how much fuel the fuel path allows under the current conditions, whether through jets, valves, or electronic control that responds to speed and load signals. The other components contribute to fuel delivery or speed control, but accurate, small-step changes in fuel quantity are governed by metering, which directly sets the amount of fuel based on the engine’s current demand.