Quote:
Originally Posted by Doktor Bert
John confirmed that if there is a steady supply of fuel to the injektion pump, without air bubbles, the supply (or lift pump) pressure has absolutely no effect on delivery pressure or timing.
Hope this information proves interesting...Robert
|
I'm not in agreement with the above.........or I don't understand it fully.
The elements in the IP must fill with fuel in a very short time interval. The rate of fill must be governed by the fuel pump pressure from the supply. At lower fuel pump pressure, the rate of fill must be reduced and the available power must be reduced.
There is definitely a lower limit whereby the fuel pressure will affect the power produced by the engine.