fuzzy logic fuel pump - was Re: fuel pump question

[Jason Haines]

Lucus was developing such a system a few years ago - I don't know if it has
gone to production yet. I think the newest Mustang Cobra uses a "smart
pump" that does this as well - a feedback system with a fuel pressure
sensor on the rail. Fuel pump noise, packaging size, higher fuel pressures
and higher horsepower levels are "fueling" 8-) the need for these devices.

Kenne Bell sells an aftermarket system ("Boost-A-Pump") that does a similar
thing through the use of a pressure sensor - when the manifold pressure (or
vacuum for naturally aspirated engines) gets to a certain level, the
voltage to the pump is increased to a set voltage which increases the pumps
flow capability.


Jason


At 09:29 AM 6/8/99 -0700, you wrote:
>Hi John,
>
>Please excuse the vagness of my post here...
>
>Once read about a fuzzy logic fuel pressure controller which controlled
>the voltage to the pump based on some signal from the engine(Vacuum
>maybe?) Kindof like a powervalve in a carb...
>
>But instead of limiting the fuel via a valve restriction, as most fuel
>pressure regulators do(which restricts the entire system and puts limits
>on the total amount of possible fuel delivery in time... It limits the
>fuel pressure via the pump power, only pushes the pump voltage to the
>amount needed.... Increases pump life, reduces overly pressurized overly
>heated fuel and can pump enough fuel for any application due to its
>inherent design...
>
>Can't remember the brand of the fuzzy logic system, this is why I asked
>to be excused due to my vagness....
>
>Hope I shed some light, or at least re-shed it...
>