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Search: Posts Made By: Brian Carlton
Forum: Diesel Discussion 08-04-2004, 09:15 AM
Replies: 52
Views: 5,358
Posted By Brian Carlton
Tim, I think you have two things confused. ...

Tim,

I think you have two things confused.

1) The engineers did provide "aneroids" in the ALDA that certainly do respond to absolute pressure. When at sea level, the ALDA will deliver a...
Forum: Diesel Discussion 08-04-2004, 08:14 AM
Replies: 52
Views: 5,358
Posted By Brian Carlton
PEH, Maybe I was not clear. To increase the...

PEH,

Maybe I was not clear. To increase the output of the turbo from 12 psi to 15 psi, by "dialing it up" as you say, you would simply adjust the wastegate.

I think we all understand that the...
Forum: Diesel Discussion 08-03-2004, 10:26 PM
Replies: 52
Views: 5,358
Posted By Brian Carlton
Well, if 15 psi is the limit, then you can still...

Well, if 15 psi is the limit, then you can still get an additional 3 psi over the factory limit of 12 psi. This would allow you to achieve sea level power at an altitude of 6200 feet.

You could,...
Forum: Diesel Discussion 08-03-2004, 12:51 PM
Replies: 52
Views: 5,358
Posted By Brian Carlton
Tim, Old300D is correct. If there was an...

Tim,

Old300D is correct. If there was an "ALDA" on the wastegate that would sense the decrease in absolute pressure, and thereby allow the wastegate to remain closed until higher boost pressures...
Forum: Diesel Discussion 08-03-2004, 11:15 AM
Replies: 52
Views: 5,358
Posted By Brian Carlton
Tim, you are correct. The absolute pressure in...

Tim, you are correct. The absolute pressure in the tank would be 114.7 at sea level. The absolute pressure in the intake manifold would be 26.7 at sea level.

At 6200 feet, the absolute pressure...
Forum: Diesel Discussion 08-03-2004, 10:22 AM
Replies: 52
Views: 5,358
Posted By Brian Carlton
If the turbocharger puts out a fixed pressure...

If the turbocharger puts out a fixed pressure differential (say 12 psi) it does not know that the atmospheric pressure is dropping.

If the atmospheric pressure is dropping then the absolute...
Forum: Diesel Discussion 08-03-2004, 10:07 AM
Replies: 52
Views: 5,358
Posted By Brian Carlton
PEH, I believe that the 12 psi is controlled...

PEH,

I believe that the 12 psi is controlled by the wastegate. You can get 12 psi all the way up to about 10,000 feet or so. However, you cannot get 26.7 psi because the atmospheric pressure is...
Forum: Diesel Discussion 08-03-2004, 12:33 AM
Replies: 52
Views: 5,358
Posted By Brian Carlton
Here is the deal regarding power and altitude: ...

Here is the deal regarding power and altitude:

The atmospheric pressure at sea level is 14.7 psi. This pressure is increased by 12 psi from the turbocharger to a total of 26.7.

The atmospheric...
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