Quote:
Originally Posted by SD Blue
Sorry I couldn't find a photo but here goes..........o o o o o.(the o's=valves & underline=rack)............The rack is a geared shaft in the IP that turns a tapered plunger in the fuel delivery valve to control the amount of fuel delivered with each stroke. When the rack returns to idle, the dampner cushions the return for a more gradual decrease at the very end of its travel.
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Yes that concept is correct and let me add on each plunger there is a groove in which allows fuel to leak out to the bleed holes to limit the pressure. The "control" rack turns the plunger so the grooves can meet up with the bleed hole.
Here is the pics that your looking for.