Fuel plate curiosity question.
#1
Fuel plate curiosity question.
I've been studying a cut-away pic of a P-pump and I've got a question. I have an engineering background so stupid s h I t like this makes me wonder.
The stock (and some aftermarket) fuel plates have a "sawtooth" profile and I'm wondering why. The plate is in a fixed location and is contacted by the governor follower. I can't tell if the follower moves up and down during normal operation to engage different locations on the fuel plate. If the follower doesn't move, why would a sawtooth profile be necessary? The follower would contact the plate at the same location all the time unless the locations were physically changed. Just wondering
The stock (and some aftermarket) fuel plates have a "sawtooth" profile and I'm wondering why. The plate is in a fixed location and is contacted by the governor follower. I can't tell if the follower moves up and down during normal operation to engage different locations on the fuel plate. If the follower doesn't move, why would a sawtooth profile be necessary? The follower would contact the plate at the same location all the time unless the locations were physically changed. Just wondering
#3
It looks to me like the follower has an adjustment screw to change the vertical position of the point where it would contact the plate. From the angle of the cut away picture, I can't tell if the governor has the ability to move the follower up and down engaging different areas of the profile on the plate. Cummins may have wanted one plate for numerous applications and the technician adjusted the plate position and the follower position based on a particular application. If the follower moves up and down based on governor input then that would make sense too. I'll try to figure out how to post a picture.
#6