WABCO Turbocharged compressors

[Azraelo]

Hi.

I have always seen compressors intake after the air filter and before turbocharger.
But in these new Cummins BGE5-200 engines, compressor intake is after the aftercooler. (and, obviously after the turbo).

So this new compressors are "turbocharged".

What's the technical reasons?

The only reasons I have in mind, is that the compressor would be smaller. And the air flow would be greater.

How does it affect the air which is being sucked by the cylinders?

Thanks.

 

[patprimmer]

Your post makes no sense. I feel a translation from another language to English has corrupted the meaning. Can you please re translate so maybe we can understand.

Regards
Pat
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[Lou Scannon]

Hi Pat,

I think Azraelo means the on-board air compressor for air brakes, etc.

Azraelo, your conjecture about the purpose of feeding the compressor from the turbo makes sense to me.
The amount of airflow is relatively insignificant compared to the engine's total airflow.

"Schiefgehen will, was schiefgehen kann" - das Murphygesetz

 

[patprimmer]

hemi.

OK. That makes sense.

Also a compressor for air brakes probably mainly kicks in when the brakes are applied or immediately after starting the engine cold.

Regards
Pat
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