Brushless Fuel pump -- DHB?

[CarloL]

Hi

ECU: M130
Fuel Pump: Walbro/ TI Automotive E5LM pump
Q: How to control the pump via PWM

Desc:

I am looking at running a brushless fuel pump Walbro/ TI Automotive E5LM pump via PWM ,

Options:

Ti Automotive BKS1000 controller
Injector Dynamics have a very fancy system in the works the last few years (BPC1100 system ), not released
Fuel Lab do a PWM controller (https://www.fuelab.com/72002-externally ... CSggPD83LI)
Motec DHB

I am concerned with temperature saturation in the fuel, as far as I know Ti Automotive BKS1000 controller is on/off switch , no variable speed

Question:
Can I bypass all these Fuel controllers and just use a M130 to Motec DHB to E5LM pump? or do I require a controller inbetween , Fuel lab seems to be my only option

Test Data

Radium Engineering test
Ti Automotive BKS1000
Tested flow rate at 45 psi: 577 LPH
Current draw at max pressure: 14.4 Amp
http://www.radiumauto.com/Blog/Post/Rad ... p-Test-100

Injector Dynamics BPC1100 system
http://www.radiumauto.com/Blog/Post/Tes ... EJ0IN_PLCI

[CarloL]

Has anybody setup a Brushless Fuel pump on the M1?

[stevieturbo]

If you are concerned about fuel temperatures, what are your current fuel temperatures you perceive as a problem ?

[NathanB]

Hi Carlo,

Brushless pumps are different to a normal fuel pump, as instead of feeding 12V in on one wire, and ground on the other, they use three wires, and switch which phase of the pump is seeing positive and negative.

For this reason, you will be unable to control a brushless fuel pump directly, or through a DHB.

Due to this they use purpose built fuel pump controllers. There are many OE control modules around, and several aftermarket options such as the fuel lab unit, as well as protec, torqbyte and SRM.

You will have to run a controller for the pump. The MoTeC has the ability to feed a controller a PWM signal either by an auxilliary output table where you can setup a table with a duty cycle for the pump, or alternative, and particularly for a returnless system, you can use the fuel pressure control output (as long as you have a fuel pressure sensor) that will close loop manage the the duty signal to maintain your aim pressure, like you would find on a late model European DI vehicle.

Some controllers also offer the option of a 0-5V input to vary pump speed, in which people will often share the map sensor signal to the module to vary the duty. But for finer control, a PWM fuel pump module is the best option for fine control.

[CarloL]

Thanks Nathan for the comprehensive reply

[CarloL]

Brushless controller contains an array of transistors that switch current to their respective coils to get the rotor turning, just like the brushes and commutator.

Example of M1 setup to integrate with the Injector Dynamics BPC1100 system