Fuel Pump: Enables or disables the fuel pump control feature.
Pressurise Timeout: Sets the duration (in seconds, e.g., 2.50 sec) the fuel pump will run to pressurize the system before starting the engine. This ensures the fuel system is primed.
Engine Stop Timeout: Defines the time (in seconds, e.g., 1.00 sec) the fuel pump continues to run after the engine stops, aiding in cooling and preventing fuel system pressure drops.
Control Type: Allows selection of the control method for the fuel pump. Options include:
ON/OFF: Simple on/off control.
PWM: Pulse Width Modulation control, which offers more precise control over the fuel pump. If PWM is selected, you can choose between 4 different PWM tables to adjust the pump's operation based on various conditions like temperature or load.This requires an external module to handle the high current usage of the fuel pump.
Fuel Pump: Ensure this is enabled if you want the ECU to manage the fuel pump.
Pressurise Timeout: Adjust this based on how long it takes for your fuel system to reach operational pressure. A longer time might be needed for systems with larger volumes or higher pressures.
Engine Stop Timeout: This should be set to allow enough time for residual fuel to be cleared from the system or to keep the pump running for cooling purposes. Too long might waste fuel.
Control Type:
For ON/OFF, it's straightforward; the pump either runs or doesn't.
For PWM, selecting different tables allows for nuanced control, where you can tailor the pump's operation to specific engine conditions. This can improve efficiency and reduce wear by adjusting pump speed or duty cycle.