Love This

[Greg Hermann]

>
>The reasons I don't think you need a mechanical regulator are
>(1) You're already measuring FP to a high degree of accuracy. The
>resultant injector PW is going to be a fair bit more accurate than
>using a mechanical regulator and assuming it's keeping FP constant
>within say +/- 0.5%. FP variation is somewhat inevitable, at least
>now we can measure and correct for it.  (2) A large pulsation damper
>gives me the feeling of a safety net wrt possibly large, very fast
>FP changes caused by individual injectors opening and closing.
>(Which may not be easily calculated out due to high BW.)
>
>Now the next step is putting a fuel temp sensor just before the
>rail and compensating for fuel temperature too...

Hi Chris--
>
Ok--but watch it with your bigger pulsation damper--if you are going to
change fuel pressure with engine operating conditiona, a big capacitance
will screw up your response rate ROYALLY!!

Regards, Greg
>
>Hell, I'm sold. Even if I can't get one of those specific Moto units,
>I don't see why I can't get *something* to do the job, and a PWM
>controller for the fuel pump is easy. A module from
>www.powertrends.com is probably more than good enough. I'm just
>glad this thread came up in time for me to use the ideas on my
>current project engine.
>
>
>   Chris C.