New Turbo liquid cooled? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 16 (permalink) Old 09-28-2009, 09:50 PM Thread Starter
 
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New Turbo liquid cooled?

Is this a new feature or does anyone else use this setup? Do you still have to let the turbo cool after long pulls?
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post #2 of 16 (permalink) Old 09-30-2009, 07:17 PM
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I would think the turbo cool down would still be a good idea. This design has been used in other applications before, just not in light duty applications. I have seen thi in marine applications and in the Navy.

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post #3 of 16 (permalink) Old 10-01-2009, 12:34 PM
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I am not familiar with how they run the liquid cooling for this turbo. Is it water-based coolant? If so, I would think cool-down is a must, otherwise you will possibly boil the water that is in the area of the turbo leading to puking. Imagine that...you park, walk away, and 5 minutes later, a delayed puke!

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post #4 of 16 (permalink) Old 10-01-2009, 01:39 PM
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That would suck!!!! I am thinking, and this is purely a thought, that the turbo has it's own oil system and that oil is what is cooled through a water-oil cooler. I am also thinking that the coolant it is using is the same as the EGR coolant system.

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post #5 of 16 (permalink) Old 10-01-2009, 01:46 PM
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Originally Posted by jdydiesel View Post
That would suck!!!! I am thinking, and this is purely a thought, that the turbo has it's own oil system and that oil is what is cooled through a water-oil cooler. I am also thinking that the coolant it is using is the same as the EGR coolant system.

interesting thought... any experts on the subject? I'm interested in learning more about this system too... thanks jdydiesel
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post #6 of 16 (permalink) Old 10-01-2009, 02:49 PM
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This type of turbo is used in subaru's its called a IHI Turbo, its oil and water based cooled, so after aggressive driving you don't need to have a turbo timer to have extra cool down time.

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post #7 of 16 (permalink) Old 10-01-2009, 02:58 PM
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Originally Posted by SmokeCloud View Post
This type of turbo is used in subaru's its called a IHI Turbo, its oil and water based cooled, so after aggressive driving you don't need to have a turbo timer to have extra cool down time.
are the subaru's seeing the same kind egt temps that a diesel makes?

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post #8 of 16 (permalink) Old 10-01-2009, 03:00 PM
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are the subaru's seeing the same kind egt temps that a diesel makes?
Hell no, the temps boxer motors run is a dream to diesels. but then again, you gotta look at the tune as well.

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post #9 of 16 (permalink) Old 10-02-2009, 10:47 AM
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I believe gassers run even hotter? I don't know if the diesel turbos are like Ford's Ecoboost gas turbo's, but here's a great clip from the Ecoboost introduction... extreme testing!!!!!

" "Reliable to the Extreme
Turbochargers operate at high speed – up to 170,000 rpm – and under intense temperatures of up to 950 degrees Celsius (1,740 degrees Fahrenheit). Some previous-generation turbos were reputed to suffer from oil coking, in which they would bake their lubricating oil. Because oil coking can lead to premature turbocharger bearing failures, Ford’s advanced engine engineers specified the use of new, water-cooled turbochargers to combat this problem.

“During normal turbo operation, the turbo receives most of its bearing cooling through oil,” said Keith Plagens, turbo system engineer. “After shut down, the problems with turbos in the past were you would get coking in the center bearing. Oil would collect in the bearings, the heat soaks in and the oil would start to coke on the side and foul the bearing. Water cooling – used in the EcoBoost engine – eliminates that worry.”

The new EcoBoost V-6 uses two Honeywell GT15 water-cooled turbos.

“The EcoBoost engine uses passive thermal siphoning for water cooling,” Plagens explains. “During normal engine operation, the engine’s water pump cycles coolant through the center bearing. After engine shutdown renders the water pump inactive, the coolant flow reverses. Coolant heats up and flows away from the turbocharger water jacket, pulling fresh, cool coolant in behind. This highly effective coolant process is completely silent to the driver, continuing to protect the turbocharger.”

Going for a Spin - Flat Out
To validate their water-cooled turbo design choice, Ford engineers put EcoBoost through a special turbocharger test.

The test ran EcoBoost at maximum boost flat out for a 10-minute period. Then the engine and all cooling were abruptly shut down and the turbo was left to “bake” after this high-speed operation. If that sounds severe, imagine repeating this cycle 1,500 times without an oil change. That’s what EcoBoost’s turbos endured.

After 1,500 cycles, the turbos were cut open for detailed technical examination. The turbos passed the severe test with flying colors."
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post #10 of 16 (permalink) Old 10-02-2009, 01:58 PM
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Quote:
Originally Posted by Hydro View Post
I believe gassers run even hotter? I don't know if the diesel turbos are like Ford's Ecoboost gas turbo's, but here's a great clip from the Ecoboost introduction... extreme testing!!!!!
I don't know I have to look that up, but I am pretty sure diesel runs hotter, because I know they constantly run lean. as for a car it runs a little more richer then a diesel.

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