OM617 genset
I want to make a OM617 genset. Working on the design side of it right now. can the rear of the crank take a side load? I can get a generator head made for a pully but not sure how the crank will take it. Id like to use multiple small gen heads and maybe even an air compressor head so I can tune it for needs
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I wouldn't side load the engine. Think about a couple pillow block bearings & keyed shaft driven by a lovjoy coupling off the engine. Mount your sheeves on the keyed shaft & drive as many as you like=with no side load...
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"The Governor inside of the Fuel Injection Pump is not setup for the type of control that a Generator needs."
I quote myself from the below thread http://www.peachparts.com/shopforum/diesel-discussion/293968-anyone-use-2-2-mb-diesel-motor-generator.html?highlight=thermoking The Gen Sets I have seen are designed; when under load or changing loads to keep the Engine at 1800 rpms. With the exception that the Engine will idle when under no load. The Governor has to be quick enough to catch the Load when the Load is first put to it and quick enough to respond to a change in loads. If it does not catch the load fast enough your circuits will start to get hot. I don't think it does the Engine any good either. |
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I work for an electronics design house so I am planning to use a servo drive with tach pickup for the throttle. It will likely sense and adjust thousands of times a second with some averaging to keep it from going crazy. If I can find a way to hook up a manual one all the better to keep it simple if it is reactive enough. I plan to run at 2200RPM so the turbo will function as well. I will have the stock flywheel and a may add a second one to keep it from getting popped to hard. I can also somewhat control the loading. I plan to do it in a small steps approach with the motor mount, governor and one gen head, then expand it as success or failure dictates. worse case I will just use it for a test platform and maybe a big air compressor I guess the question is if you can manipulate the throttle fast enough will the IP still maintain constant speed? |
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thanx yeh I looked at glenlloyd's link and I like the idea of using a bell with a bearing mounted, thats pretty easy to fab up and then it takes the side load question out of the equation. |
The mechanical (RW) governor, with a little tweak here and there, is capable of regulating a constant speed, even in the 2K RPM range.
The key is in the fly weight springs. When the fly weight return springs are properly set, the Idle Governor should be able to control the speed as it does now, only at a higher RPM. |
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thanx, do you or does anyone know of a mechanical regulator similar to the one in the link above? It looks to be an aftermarket belt driven one with rods to the throttle linkage. |
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Running at 2200 rpm with a good load that thing is going to suck down diesel at a quick and expensive rate. :eek:
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not enough load for the turbo?
I suspect that the loads you are looking at can be produced at maybe 1200 rpm, no point in trying to produce too much power, 10 KW would need maybe 25Hp at most in my opinion. A really heavy flywheel like maybe 3x stock would be useful to even out speed variations. Data centre ups's consist of a generator driven by an electric motor with a huge flywheel and a diesel engine which starts & loads within 10 secs which the flywheels can cover. Cheers dan
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wow thanx. ill give them a call tomorrow, none of the governor links are working. |
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these motors seem to like 2200rpm. with my manual trans I can feel it really come alive right at that point. I would think it will hold the RPM with watever fuel it needs to maintain the load. we will see. Im also looking at whole house backup units right now because with the housing crisis they are popping up pretty regular. I have the design most of the way mapped out, as I get details I will post a couple views. I went to the boat boneyard today to see what fuel tanks are avaiable, that wont be an issue, they had every size imaginable. |
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