Fuel Pump Controllers

[shanef]

Firstly, are there any ecu's on the market with an in-built fuel pump controller? Something that will regulate the voltage at differeing rpm, so the pump isnt running full noise 24/7 and heating up the fuel.

Main concern is big pumps in street driven cars.

I know aeromotive do a unit, but its only a 2-step i.e only regulates voltage based on 2 rpm inputs, well thats my understanding of how it works. Is there anything out there that gradually increases/decreases voltage in relation to rpm?

If you run a big pump/s, how do u combat this?

[Swiper the Fox]

Vi-PEC again.

sorry

[shanef]

Vi-PEC again.

sorry

so they actually have one hey, interesting.

How does it exactly work paul?

[Fastrotor]

The ViPec/ LINK G4 just use two auxilary outputs. They are configured as fuel pump for one, to switch on, and the other is configured as Fuel Pump Speed. This is activated when a set revs is reached (and or %Inj Duty cycle ).

The switching obivously needs a relay with a resistor inline with the pump to be able to switch it in and out as needed. As in most factory efi setups for the last 20+ years.

Gary

[shanef]

f**k, that really sucks

is it only in the v88? or is it in all the vipecs?

[N1GTR]

Motec

Autronic

Haltech

I think Microtech aswel (but i never used any of that stuff on it so not 100% sure. Had LT12S.

[shanef]

yeh lookin at the haltech manual last night i think i know how to do it

the vipec was looking half interesting there for a second, but noooo bingoooo

[Fastrotor]

You could use an aux output set to pwm to control the pump that way, but you would still need an external driver (ie ignitor module ) to drive the heavy current loads a pump would use.

Show me any ECU that can control pump speed out of the box directly.

And whats so hard about a relay and resistor ???

Gary

[shanef]

You could use an aux output set to pwm to control the pump that way, but you would still need an external driver (ie ignitor module ) to drive the heavy current loads a pump would use.

Show me any ECU that can control pump speed out of the box directly.

And whats so hard about a relay and resistor ???

Gary

yeh thats the way i meant, use a pwm output to control the pump via a relay and resistor. in the haltech its got a 32x32 map for it aswell. need to discuss it with my tuner though

[Fastrotor]

If you use PWM you won't be needing a relay and resistor, just an single channel "ignitor" would be necessary to controll the large currents possible.

The link can quite happily do this and has a 3d map based pwm outputs as well.... and you can specify what ever you want to be the axis's of said 3d map .... boost*rpm or %inj duty*rpm ect .....

Any ecu will need an external ignitor channel to control the pump.

So...... no need to ditch the Link/Vi-pec

Seriously, its really an impressive bit of gear.

Gary