I was a 52d wet stacking is caused by incomplete combustion raising the t stat temp wont help a lot. the other problem is the tqg series gen sets had a highly restrictive exhaust muffler which added to the problems caused by wet stacking your generator will run at max efficiency at 60 percent load. my suggestion would be to create a variable load bank a simple way to do this would be with an electric heater and depending on the load you have you can selectively turn on coils in the heater. I would not restrict cooling as you will still have still have the same fuel charge that isn't burning all the way across the top of the piston.
We had this problem in HAWK and PATRIOT. The gen sets were simply too big for the job, 98% of the time. Its that 2% that was the killer. But I am getting the cart before the horse.
Some smart TROSCOM guy, thought that what was needed to combat this wet stacking problem, was a parasitic load bank. The operator would turn on the load bank, after the gen set had been put on line, to "help" the engine stay clean. The 15 and 30 KW gen sets had a heater/load bank contraption mounted to the front of the set. The air being drawn through the gen set, from the rear louvers, past the main AC to cool it and then past the engine, through the radiator, to cool the engine, and at last through the load bank, to cool it. Man, that was a run on sentence. Anyway, that was the way it worked. Or was suposed to. By the time the cooling air made it the whole way through the whole rig a ma roll, the cooling air wasn't so cool. The load banks tended to overheat, causing the components to become brittle and break. That was problem number one.
Number two, was the contraption was parasitic, so it was in addition to the load the gen set was pulling. I will use Patriot here as an example. The launchers each had a gen set on it. Each gen set was a 15 kw set. The launcher HAD to be powered up at all times. It pulled about 7-8 KW, if I remember right. It ran like that 24/7. Maybe 50% load. So on goes the load bank. You could step it up in 2.5 KW steps, to about 7-8 KW, ( cant remember the correct KW readings and am to lazy to look right now) so you could give the set a full load.
Sounds good in theory. But what happens when you are chugging along, with 80-90% load, (launcher and load bank) and the missile launcher gets a firing command. All kinds of electric gear starts sucking up power! And then the crowning step. The launcher goes into Super Elevation, (this is where the launcher jumps up, and slews to the right or left, to "lead" the the target, like shooting quail) so the bird can leave the launcher. The gen set then hits 130-140% load, and shuts off in the middle of the firing run.
And to make it even worse, in the winter, heaters in the launcher raised the load even higher. So to compensate, you had to lower the load banks setting, or turn it off. So who needs it? No one. The darn things were never turned on. Or only when people were sure you might not need to shoot someone down. All well and good, but when we were protecting the skies, who was to say you could or could not take time out to run it? When a Patriot battery was non mission capable, phones rang in the Pentagon. So no one was going to make such a decision. HAWK was the same way. As soon as the system went into high gear, the load back caused the set to overload and shut off.
Now lets substitute your house with a missile system. The set is running, house is 3 KW, you put 1.5 KW on with your load bank and everyone is happy! The old lady pushes the toaster down, Daughter #1 turns on the dryer, Son # one turns on the dishwasher, and you're all standing in the dark.
The only way to beat this circle, is to have a load measuring system, that senses the up swing of an increased load, and kicks out your load bank. And what happens when the hot water heater kicks off, the dryer kicks off and your back to 2.5 KW? Either you have to manually reset your load bank, or your "smart" load sensing circuit turns the load bank back on. This might be expensive. And it would have to work super fast! I am sure its doable, and the new computer systems do this, or something like this now, but like I said, expensive. Much easier, and less expensive to every once in a while hook the gen set up, run it an hour or two and clean it up. Diesel Addict and post #10 says it all.
