[purplelightning]

I'm very keen to have PWM fuel control for my motorcycle applications to reduce power draw. The current a fuel pump (even very small ones) draws more than most of these generators can keep up with. Consequently people seem to give up on finding a suitable generator for their carb'd engine and their project stalls. I tried a couple of times to write the code and it's just not in my skillset....

Two questions..

Who is interested in paying for it to be implemented?
Is anyone interested in taking on writing the code?

My thought on scope is:

Implement the PWM loop code in firmware such that a desired rail PSI is achieved.
TunerStudio: Write the code for the static number to be adjustable in TunerStudio (Tuning Menu?)
TunerStudio Add Fuel Pressure sensor to Calibrate Pressure Sensors Menu (Or use current under Accessories)
Code to Start\Stop fuel pump as normal.
Bonus: Rising rate based on boost pressure or other load factors. (I don't have a need for this, but I can see how others might for boosted applications or replacing OEM units that vary fuel pressure)

The MOSFET requirements would be a separate effort given the large swing in required amps based on each of our projects? My use case is somewhere around 3A I believe. Perhaps for higher needs one could make a small external MOSFET unit with appropriate cooling.

I'm willing to chip in $20 to start. A small sum but if it makes a difference I've been a sponsor for the project for a year or two.

[Hasse.69]

You mean something like this?
https://www.madhu.com/content/Main/FuelPumpController

[purplelightning]

Essentially the same function, yes. At the most basic level, one could repurpose an unused PWM output and use tunerstudio to set the target PSI as part of the tune file. Of course the MOSFET has to match current required for the pump too.

[N2_]

What about something like this for motorcycle EFI? https://www.youtube.com/watch?v=kV1aDmO ... KESTUFFING

I am interested in a vESC motor-driven continuous delivery fuel injection system. a pump like this claims to be able to produce something like 40 to 100 bar pressures. https://www.aliexpress.com/item/1005004 ... 54KdC&mp=1

Such a configuration would be a simplified version of the Hilborn mechanical systems of years past, without all the additional expensive bits n bobs to tune it. As a bonus the simple nature of the fuel circuit should lend itself to dual/poly fuel setups. IE Gasoline/Methanol or pump gas/E85

IMHO I think CAN bus or serial is a better option for speed-controlling a pump motor from the Speeduino, it will have greater immunity to electrical noise.

this sensor might be of use as a tuning aid, https://www.bosch-motorsport.com/conten ... 20/600.pdf

I'm very keen to have PWM fuel control for my motorcycle applications to reduce power draw. The current a fuel pump (even very small ones) draws more than most of these generators can keep up with. Consequently people seem to give up on finding a suitable generator for their carb'd engine and their project stalls. I tried a couple of times to write the code and it's just not in my skillset....

Two questions..

Who is interested in paying for it to be implemented?
Is anyone interested in taking on writing the code?

My thought on scope is:

Implement the PWM loop code in firmware such that a desired rail PSI is achieved.
TunerStudio: Write the code for the static number to be adjustable in TunerStudio (Tuning Menu?)
TunerStudio Add Fuel Pressure sensor to Calibrate Pressure Sensors Menu (Or use current under Accessories)
Code to Start\Stop fuel pump as normal.
Bonus: Rising rate based on boost pressure or other load factors. (I don't have a need for this, but I can see how others might for boosted applications or replacing OEM units that vary fuel pressure)

The MOSFET requirements would be a separate effort given the large swing in required amps based on each of our projects? My use case is somewhere around 3A I believe. Perhaps for higher needs one could make a small external MOSFET unit with appropriate cooling.

I'm willing to chip in $20 to start. A small sum but if it makes a difference I've been a sponsor for the project for a year or two.

[PSIG]

Speeduino already has fuel and oil pressure inputs for inexpensive 100psi pressure transducers with <5V linear signals. Perhaps follow that scheme and boost or VVT control examples (or simpler) for pressure control, with level sensing or PID, and output a signal for power to the pump. I know one project used a DigiSpark, an eBay 100 psi transducer, and an electronic radiator fan controller (big MOSFET with heat sink ). It apparently worked for pump pressure control, but I didn't get specifics.

Adding a piggyback signal input from MAP would allow easy manifold-reference pressure, including for boost. If you want a basic IO ready to try that talks to Speeduino, check @dazq's GPIO series. This is a simple setup I was testing for 200psi compressed air pressure control, about as easy as it gets.

[N2_]

The high-pressure Bosch transducers are also analog < 5-volt sensors but are rated for 0 to 140, 260, 420, and 600 bar respectively.

[PSIG]

I assumed we were discussing typical 3 to 5 bar pressures?