While looking for something else, I ran across an interesting idea/product. It is a closed loop computer control of the fuel pump. It measures the fuel pressure and then uses a pulsed width signal to modulate the pump to achieve the desired pressure.
It is based on the idea that pumps run 100% and the excess is sent back to the fuel tank. Running 100% is a higher than needed current flow, heats the fuel, and heats the pump possible lessening its life. In our system, it looks like we'd set it to 75 or 80 lbs. It could actually be used to eliminate the return line but that is a separate discussion.
This is not a new idea and as I understand it, some car manufactures operate their pump in such a way to eliminate the return line.
Thoughts? What do you think?
It would be desirable to modify the code a bit for our application and with enough ordered he may do so. Might there be interest in a group buy?
NOTE: the only downside applied to our system, both the OEM style and the new integrated pumps have a sump they pump from. Return fuel fills that sump and as such the sump can have a higher fuel level than the tank and it can run the tank fuel level very low. Lower than if no sump (some refer to it as a baffle)