Essential components of the fuel pump system controls that regulate the activity of the fuel pump that delivers the same or optimal fuel to the engine Such control and actuator devices can be relays, sensors or Electronic Control Units (ECUs) that control the operation modes and timing of the fuel pump. A fuel pump relay, for example, is an electronic switch that turns on when you turn the ignition, allowing the pump to begin supplying fuel to the engine. It prevents the pump from constantly being powered (potentially leading to overheating and shortened life), which will generally allow for 15-20% more life from this item.
Another important control point, fuel pressure sensors monitor the pressure in the fuel lines and must remain in an optimal range that is typically between 40-60 PSI for most vehicles. Whenever the pressure of the gasoline goes outside of this range (either too low or too high) the sensor sends a signal to the ECU which then makes the decision to either open the flow of the pump more (if under-pressure) or restrict the flow of the pump (if over-pressure). For high-performance systems it may need more than 100 PSI of pressures – without these controls, the pump will wear while it runs at wrong pressures with efficiency reductions of 30%.
Additional in a large part because the ECU currently manages the fuel pump based on engine load, engine speed and engine temperature. Based on the drive conditions, it requires a different fuel quantity at a different pressure thereby the ECU controls the speed and flow rate of the fuel pump ensuring best-in-class efficiency and performance. For high-demand scenarios like hard acceleration or climbing a hill, the ECU orders the pump to provide higher flow, with up to 200 liters-per-hour or more of fuel in performance applications. This control helps fight against engine lag or engine misfires when there is insufficient fuel supply and leads to a controlled and suitable air-fuel ratio during combustion.
Modern returnless fuel systems use more sophisticated controls to let you regulate fuel without a return line to the tank. By directly controlling fuel pump output — as opposed to controlling the dampers with a PWM signal — these systems appreciably reduce overheating in the lines, and can yield up to a 10% efficiency advantage over traditional systems. Such controls simplify the fuel delivery to reduce stress on the pump(s); by doing so, the pump(s) can have a longer operational life.
Correctly operating Fuel Pump system controls help to optimize the vehicle’s fuel economy, engine performance, and pump lifetime in response to differing operating conditions and loads. Since the fuel pump system controls for a vehicle are an integral part of the overall running system of the vehicle that ensures the fuel is properly delivered and can run for a long period of time, without any influence on the pump.