stupid governor question

bcjm

Location: Washing DC Area
Joined: Dec 2, 2011
Points: 25

stupid governor question
Original Message Dec 15, 2011 1:40 pm

Ok I read couple of different papers regarding how governor works. Still confused. Say an egnine support to run at 3500 RPM.

Is this true: when the engine load increases, RMP drops, governor moves arm(due to RPM change), arm pushs the throttle opens more, engine back to the same speed. So no matter what load the engine has the RMP stays the same.

If that is true when does the governor spring comes in to play? How is the engine idle speed accomplished if governor suppose to set the engine speed to 3500 RPM?

RedOctobyr

Location: Lowell area, MA
Joined: Nov 5, 2011
Points: 282

Re: stupid governor question
Reply #3 Dec 16, 2011 7:52 am

jrtrebor wrote:

On most 2 cycles SS blowers. The governor spring tension and setting, pulls the throttle wide open. And it stays there.
Some engines have a vane under the shroud. That is moved by the air coming off the flywheel. That is the governor system for those engines it's not internal. Some of the Toro SS blowers
have that system.

My little Ariens SS has the vane-under-the-shroud type of governor. It's a Tecumseh engine, and does not have a throttle control for the user (it's always at full RPM).

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