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Old 01-05-2013, 03:10 PM   #1
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Coolant Cooled Turbo Charger?

In a post today someone made mention that thier turbo had coolant in it I would assume for temp. control? Cummins,Cat,Detroit, I have studied a bit on this today but can't find a turbo that has coolant in it. Today is the first time I had heard of this and I would like to hear about what brand,model, turbo mfg. that has this water cooled turbo. I only ask due to I am always wanting to learn. Thanks ahead of time.....
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Old 01-05-2013, 03:50 PM   #2
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I'm sure you won't find a turbo that uses anything but the engine oil to cool it. Temps would be way to high for coolant.
Only the bearing is cooled by the circulating oil. The hot side of the turbo is designed to handle up to 1300f or in case of my aircraft 1700f exhaust gas temps
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Old 01-05-2013, 03:54 PM   #3
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I'm sure you won't find a turbo that uses anything but the engine oil to cool it. Temps would be way to high for coolant.
Only the bearing is cooled by the circulating oil. The hot side of the turbo is designed to handle up to 1300f or in case of my aircraft 1700f exhaust gas temps
Steve, if you would check out posts 9-13 here Engine Brake noise as you will see I was A bit bewiltered also
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Old 01-05-2013, 04:04 PM   #4
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I have had two Turbo cars back in the 80's and both had water cooled Turbos.
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Old 01-05-2013, 04:07 PM   #5
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Probably has experience with some auto turbochargers. The later Garrett and Mitsubishi turbos in the 240/740/850 etc Volvos were all water cooled.

My ISC certainly does not have water cooling and I'm pretty sure the F-250 6.0 doesn't either unless they really hid the lines well.

EDIT: I see Dennis got in just before me, another 244Ti fan?
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Old 01-05-2013, 04:08 PM   #6
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I have had two Turbo cars back in the 80's and both had water cooled Turbos.
Dennis, I know Auto's have had this cooling on thier engines but not big diesel engines.That is why my question is posted on a rv forum where big diesel engine's roam, Thanks for your reply though
I drove big trucks for a couple of miles, biggest engine 600 hp cummins and have never saw this kind of turbo.
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Old 01-05-2013, 05:18 PM   #7
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Many heavy equipment engines/diesel:-) have water/coolant cooled turbos. The cooling is in the bearing area of the turbo. This helps keep the oil from coking/burning up in the bearings after a hot shutdown. This style has been on different Cat engines 3306,C9,3456,3406E. Etc for years.
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Old 01-05-2013, 05:32 PM   #8
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Many heavy equipment engines/diesel:-) have water/coolant cooled turbos. The cooling is in the bearing area of the turbo. This helps keep the oil from coking/burning up in the bearings after a hot shutdown. This style has been on different Cat engines 3306,C9,3456,3406E. Etc for years.
I had a 3406 cat in a semi and did not have this cooling, and again I am not questioning other areas in the world where diesel engines are used for different applications. I am just talking about diesel engines in Motorcoach's and even semi's for matter. One person posted that he had this on his motorcoach diesel engine?
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Old 01-05-2013, 11:01 PM   #9
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A simple way to answer the question is to Google "water cooled turbo"
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Old 01-06-2013, 05:55 AM   #10
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A simple way to answer the question is to Google "water cooled turbo"
Been there done that, I am sure others have also. I really don't think that diesel road engine's have this kind of design.
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Old 01-06-2013, 09:29 AM   #11
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Cummins VGT Turbos

Cummins does use coolant to cool the VGT turbos found on 2007 and later engines. These turbos have a electronic actuator attached to the center housing of the turbo. Coolant lines are attached to this actuator to keep it cool. There are passages that mate up to this to allow coolant through the center section of turbo, "bearing housing". Oil is still used for lubrication of the bearings. Don't look for heater houses going to the turbo.. These coolant line are metal with wire braided sections for flex.
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Old 01-06-2013, 10:14 AM   #12
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Cummins does use coolant to cool the VGT turbos found on 2007 and later engines. These turbos have a electronic actuator attached to the center housing of the turbo. Coolant lines are attached to this actuator to keep it cool. There are passages that mate up to this to allow coolant through the center section of turbo, "bearing housing". Oil is still used for lubrication of the bearings. Don't look for heater houses going to the turbo.. These coolant line are metal with wire braided sections for flex.
Thank you, I learn something everyday on here!
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Old 01-06-2013, 10:31 AM   #13
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The variable geometry (VGT) Holset turbochargers on the Cummins 6.7L engines have bearing housings that are cooled by engine coolant. This assists in preventing oil "coking" on the bearings as well as cooling the VGT actuator mechanism.

Earlier non-VGT Holsets on the Cummins 5.9L engines did not have this cooled bearing housing.

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