Oscar: I am also looking at this as a possible way to not run it out of gasoline every day. Just not sure how safe it would be sitting on very hot pavement. Wonder if my insurance would cover this .................................
Idle or Not to Idle?
Discussion in 'Ask An Owner Operator' started by Gentlemanfarmer, Mar 16, 2013.
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What model Honda generator are you using Danny?
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The old 2 strokes leaked oil when cooling off,and warming up; puddles of oil. Fuel was cheap, so they were idled.
The ISX puts extremely hot fuel back into the tank, try pulling out of a 5 gallon auxiliary tank equipped with a fuel cooler and see if it idles for 10 hours on 5 gallons.
I checked one over a period of days, it was company policy to keep it running when it was cold, and weighing over a scale, calibrated to 20 lb increments.
Fuel use calculated to just over .9 gallons per hour at 800 rpm which was what was recommended by Cummins for this 2001 pre-EGR ISX. The mechanics were supposed to keep fuel in them when we were off and didn't always, it would run out if idled long enough, 200 gallons would last about 9 days, maybe a little less because you could only draw about 185 gallons out of full tanks.
The manual for the engine also stated the fuel use at that speed and not to run it at a higher RPM because that would increase fuel usage to about 1.5 GPH at 1200 RPM.
We still have the same scale, and it is checked regularly. We no longer have to idle when it is cold because that head mechanic and his guys are gone, and the newer trucks have heaters that we plug in.aiwiron Thanks this. -
Having been at all of ends idling spectrum to sleeping in the extremes shutdown, an APU is the only way to go. It is proven a TK will pay for itself in 13 months or so by the difference in fuel saved. Everything after that is $$$ in your pocket. When they have a lifespan of 10 years or better that is 9 years of the lowest cost comfort one can get. If you are going to live on the road one needs all the bells and whistles. You deserve it. An APU is tax deductible and some states even offer some kind of energy credit.
All one has to do is play a money game and take out a loan. The money saved each month will make the payment. Surely if you have credit to buy a truck you can get an APU.MNdriver Thanks this. -
Volvo idleing at the manufacturers optimum idle speed,( preset), uses .5gl/hr. idle is around 750-800 rpms. has a readout in dash screen.
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The ideal situation for me would be to get a brand new Coronado glider truck, and a TK APU unit installed on it from new. The APU should last about 5-6yrs if you do not use it every single day. The truck would be a "lifer" as I like tio call it, the one I keep for the enitrety of my truck driving life. The TK engine is easily rebuilt in your garage in a day or two when it needs it. And if you do not have the know-how or mechanical ability, any small engine repair shop can do a rebuild for cheap.
My question is, how much will an APU extend my trucks engine life??? If I can get even 1 more year out of the trucks engine, then the APU pays for itself 3 times over considering the revenue you will make in that 1 year compared to the overhaul cost and loss downtime. -
As long as I can idle when needed, and someone else is paying the bills, an APU isn't a deal maker or breaker for me. We had APUs on the rentals, the only reason was that they weren't considered something easily removed and reinstalled and these were Tri-pacs. 3 year old trucks and they were already causing trouble. They also mask a bad set of batteries until they were so bad that you couldn't jump start the trucks.
I am not in any position to want to buy a truck, it isn't happening anymore. -
That's still 2-3 times more fuel than an APU.
So not even considering the fuel cost.
The mechanical wear on an engine is hardest at idle.
It's always been my understanding that one hour of idle time is equal to driving 50 miles. That is partly why an engine has an hour meter. Especially a static engine like a generator. My TriPac hour meter doesn't add hours unless it's actually running. I have paid that much attention to it. If it did, I'd be adding a separate hour meter AT the engine quickly.
So even if I idle that APU for 125-135 (call it 130 hours average) hours this entire year, that's 6500 miles of wear I am not putting on my engine. That has serious value to me.
I see each engine as a tool on my truck. The big engine is for getting my load down the road. I use it for that.
The APU engine is for my creature comforts when I am sitting some place. I use it for that.
You sure wouldn't use a sledgehammer to drive in a finishing nail on trim now would you. -
Oscar the KW Thanks this.
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Its only a little bit of money so my comfort comes first and foremost. I idle whenever I feel like it which is usually below 60 degrees and anything above 75 degrees outside. I have never had an engine blow yet from to much idle time. And I have never had one blow while idleing either. People have their own opinions and whatever makes you feel better than go with it and believe in it. I am not one to waste a large amount of money($6500-$10,000) on a little apu.
fireba11 and Jake The Bullhauler Thank this.
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