If we are talking pre computer controlled Mercedes diesels,
such as the 617 turbo diesel, you are totally wrong! The governor
does not have any function between idle and full rpm. The only
things that control engine speed are the load, and the position
of the fuel rack.
I disagree. It's possible to build diesel governors that have throttle
responses anywhere from gasser acceleration models to pure tractor-like
fixed RPM settings. The relative strength of the two springs that
couple
the throttle rod and the governor to the fuel rack determine this. The
governor in the 200D Frankenheap is very tractor-like, it pretty much
accelerates all-out (ha!) to the rpm corresponding to the throttle pedal
position. You could probably get a pretty tolerable cruise control with
just a throttle lock. And this from a vacuum governor. Just MHO, no
actual diesel mechanics were harmed during the forming of this opinion.
-- Jim
