I'm currently dealing with the "how to shutdown" issue on a 6kva kubota powered generator
. It currently has a fuel
cutoff solenoid valve just before the injector pump
and its the worst possible way to stop a generator
. It takes a long time to run down and in an overheat or low oil
pressure protection shutdown I think there's time for damage to occur. Not only that , it's quite hard to restart!
On this Kubota there is no manual shutdown other than possibly bringing the engine
to a negative idle position with the speed control lever which is of necessity, usually locked to maintain frequency.
Paguro and maybe F. Panda use the fuel
line solenoid as what I thought was a cheap
solution to the lack of an actual stop lever but Paguro sell the fuel solenoid for €450.
This is a 2 pole genset so it's at 3000 rpm
and having tried a shutdown with the decompression lever..... I would not advise that as a useful technique.
Captlloyd.....the Detroit mechanic
probably had that clipboard to keep track of his hours, every automotive class Detroit from 2-53 up to 16V-92 I've seen has an emergency
air intake flap to deal swiftly and decisively with the classic
GM runaway.....now just a memory from the past with the introduction
of the individually spring loaded rack controllers.
The Deepwater Horizon runaway problem is complex because DP operations have requirements regarding automatic shutdown and redundancy ..... keeping station is critical to avoid losing the wellhead but surely the SMS and class survey
would have foreseen the possibility of the Generators breathing an unrestricted hydrocarbon supply after a blowout and the need for an intake air shutoff.