Turbo timers
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From: On the prairie
Turbo timers
I could ask this in general diesel, but I think theres more resourceful people here.
What I'm wanting to do is rig our tractors up with shutdown timers so no one has to sit there while they're idling. I figured a simple normally open temp switch to supply battery power to the fuel shutoff solenoid would do the trick. What I'm not sure of is the location of the temp sensor. I thought coolant temp would be easiest to tap into, and oil temp usually isnt far off from it. Next question is what temp to use, like 200 deg water, 190? Should I consider basing it off egt? Just huntin for opinions, thanks gents.
What I'm wanting to do is rig our tractors up with shutdown timers so no one has to sit there while they're idling. I figured a simple normally open temp switch to supply battery power to the fuel shutoff solenoid would do the trick. What I'm not sure of is the location of the temp sensor. I thought coolant temp would be easiest to tap into, and oil temp usually isnt far off from it. Next question is what temp to use, like 200 deg water, 190? Should I consider basing it off egt? Just huntin for opinions, thanks gents.
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Joined: Feb 2012
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I could ask this in general diesel, but I think theres more resourceful people here.
What I'm wanting to do is rig our tractors up with shutdown timers so no one has to sit there while they're idling. I figured a simple normally open temp switch to supply battery power to the fuel shutoff solenoid would do the trick. What I'm not sure of is the location of the temp sensor. I thought coolant temp would be easiest to tap into, and oil temp usually isnt far off from it. Next question is what temp to use, like 200 deg water, 190? Should I consider basing it off egt? Just huntin for opinions, thanks gents.
What I'm wanting to do is rig our tractors up with shutdown timers so no one has to sit there while they're idling. I figured a simple normally open temp switch to supply battery power to the fuel shutoff solenoid would do the trick. What I'm not sure of is the location of the temp sensor. I thought coolant temp would be easiest to tap into, and oil temp usually isnt far off from it. Next question is what temp to use, like 200 deg water, 190? Should I consider basing it off egt? Just huntin for opinions, thanks gents.
Does sitting there idling in your truck for 30 seconds really inconvenience you that much?
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Joined: Feb 2012
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That being said, again, if its turbocharged, all you are really waiting for is the turbo to spool down so you don't run the bearing dry after shutdown.
Turbo timers generally are just that, timers, that are set for a certain amount of time, not based off of temp.
If you think your method will suffice though, go for it, doesn't sound like there is anything wrong with it.
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From: On the prairie
A generic timer was my next thought. It was my understanding that the danger behind a hot shutdown was in fact the hot oil sitting in the turbo and "coking" the shaft with carbon causing it to become brittle and risking premature failure. Which is why my initial thought was to time shutdown based on oil or coolant temp.
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A generic timer was my next thought. It was my understanding that the danger behind a hot shutdown was in fact the hot oil sitting in the turbo and "coking" the shaft with carbon causing it to become brittle and risking premature failure. Which is why my initial thought was to time shutdown based on oil or coolant temp.
While oil can coke up, that isn't really a high risk. The main risk is shutting down before the turbo spools down, and this happening over and over will wear out the bearing.
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From: On the prairie
No these arent new enough or large enough to be water cooled. The timer is a good idea but idealy it should be:
1. A preset time
2. Activated by turning the key off (otherwise hired help may not use it or even know how/why)
3. Easily over-ridden by a button for when it hasnt been working particularly hard.
I know of one of our big trucks at work having something like this, but its on an electronic Cat. I figured something easy could be mocked up for cheap on these mechanical cummins.
1. A preset time
2. Activated by turning the key off (otherwise hired help may not use it or even know how/why)
3. Easily over-ridden by a button for when it hasnt been working particularly hard.
I know of one of our big trucks at work having something like this, but its on an electronic Cat. I figured something easy could be mocked up for cheap on these mechanical cummins.
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Elder User
Joined: Feb 2012
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No these arent new enough or large enough to be water cooled. The timer is a good idea but idealy it should be:
1. A preset time
2. Activated by turning the key off (otherwise hired help may not use it or even know how/why)
3. Easily over-ridden by a button for when it hasnt been working particularly hard.
I know of one of our big trucks at work having something like this, but its on an electronic Cat. I figured something easy could be mocked up for cheap on these mechanical cummins.
1. A preset time
2. Activated by turning the key off (otherwise hired help may not use it or even know how/why)
3. Easily over-ridden by a button for when it hasnt been working particularly hard.
I know of one of our big trucks at work having something like this, but its on an electronic Cat. I figured something easy could be mocked up for cheap on these mechanical cummins.
JDM TURBO TIMER NA and Turbo BLACK PEN Control BLUE LEDs Apexi-Style NEW | eBay
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Personally sitting there for 2 minutes idleing has never bothered me. However if you willing to spend $60 ? or more on a timer to save .60 cents worth of labor... Im not sure what it would take to do on whatever brand of tractor your working on, most of these timers are electric that go in the ignition circuit to delay killing the engine after the key is turned off. However on all of our deeres they have mechanical "kill switches" that you have to pull the **** to disrupt fuel to the engine. If yours is mechanical also i have no idea how to do what youre wanting to accomplish without changine the pump. Yet they do make different "covers" for most pumps to go from electric to mechanical usually.
i ain't rite
Joined: Mar 2005
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From: Marlboro Mental Hospital.
this is the unit i had on all my IDI pickups.
it worked off the key taking power from the FSS on the injector pump.
at key on, it pre lubed the engine while you waited for the glow plugs to heat. you would start the engine with 55 lbs oil pressure.
at shut off, the timer would turn the pump on and run it for 5 minutes to ensure turbo cooling.
it is a great unit, and i still have one on my 88.
unfortunately, i can not find any more information on them.
it worked off the key taking power from the FSS on the injector pump.
at key on, it pre lubed the engine while you waited for the glow plugs to heat. you would start the engine with 55 lbs oil pressure.
at shut off, the timer would turn the pump on and run it for 5 minutes to ensure turbo cooling.
it is a great unit, and i still have one on my 88.
unfortunately, i can not find any more information on them.
Tuned
Joined: Sep 2010
Posts: 485
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From: Boise Idaho
. But yes, I was very lucky. I think they were around 600 new when my uncle got his first one but can't remember for sure. Longer engine life, prevents burnt oil and cools the engine..... Hard to beat. My uncle even had one rigged on is farm truck with a manual override in case his mechanical pump failed on a hunting trip. And a valve cover oiling system like mine helps the unit become even more effective at cooling the heads.