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Old 03-29-2007, 06:00 PM   post #1 of 6
hotrod
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Default Electronic Governor

Hi guys, I need some help with a project. I am wanting to build a generator for my home for the once or twice a year the power is off. The power heads seem to available at a reasonable price and I have many engine in the back of the shop to power the unit but I am looking for a simple to install electronic governor to control the engine. I dont seem to be looking in the proper places because I have came up with nothing. This has to available as it would be a simple electronic item.
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Old 03-29-2007, 06:29 PM   post #2 of 6
LilysDad
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Default Re: Electronic Governor

I saw a guy once who took a car cruise control, and put it on a Gold Wing. Seems like something ought to work.
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Old 03-29-2007, 09:04 PM   post #3 of 6
Mowerman
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Default Re: Electronic Governor

hotrod, Briggs&Stratton uses an electronic governor on some 2 cylinder Vanguard engines and on a few 3 cylinder liguid cooled models. mainly this system is used on generator units. don't have much more info than that, I've never seen one yet, don't know if they make it or out source it. you might go to B&S website to see if any info is there.... something to think about anyway. Tony
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Old 03-30-2007, 12:58 PM   post #4 of 6
hotrod
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Default Re: Electronic Governor

Thanks for the direction guys. Now I have some choices on the project. I will keep you alerted as it proceeds.
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Old 03-30-2007, 01:11 PM   post #5 of 6
mbkerk
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Default Re: Electronic Governor

I didn't know they made electronic governors to do what you are doing. I think the car cruise control thing is a good idea, if it would react fast enough, and if you can find one that can sense the RPM from a one or two cylinder engine if that is what you are going to use. The newer add on units sense engine speed, instead of shaft speed with magnets. You would need a good vacuum source for it to operate.

I know they make rev limiters for engines that work with the ignition system, by shutting it down until the RPM comes back within limits.

BTW... I have a complete Dana "speed-o-stat" add on cruise control unit that I would be willing to sell. I guess I don't have the magnets for it anymore, but they can found easily. It senses shaft speed for control. I took it off an old pickup I had before I sold it. If you know anyone who might be interested, point them at me!
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Old 03-30-2007, 01:43 PM   post #6 of 6
Mickey
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Default Re: Electronic Governor

From a theory stand point electronic gov is not all that complex but putting it into real world terms (commercially available for a variety of engines) a little more complex. The gov will need some way to know what speed is wanted. Some feedback telling the control what the actual speed is and then a way to change the speed as needed.

The problem I see is, how to tell the gov what actual speed is. So many engines configurations that making a universal control is a real hurddle. Do you try and read directly off the crank? Lot of hardware needed to fit a variety of engines. Use ign pulses IF this is a gas engine and if a gas engine, how may pulses make one revolution?

How do you change the throttle? Vac diaphram doesn't work for diesel. Could use servo motor and mech linkage but may need a lot of different hardware to implement for a great variety engines.

If one were to design and build their own, for a specific engine, all the problems of implementing a universal design would go away.

This is how I see it but YMMV
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