2013 Ram 3500 VGT Exhaust brake Question

[ChrisOlson]

Hello
Is there a actual exhaust brake in addition to the VGT? Does anyone have a schematic on the “exhaust brake” system ?

I am under the impression that ALL THE EXHAUST BRAKING .. is done through the VGT TURBO?

Please correct me or enlighten me on this subject!

Thank you

 

[kthaxton]

Hello

I am under the impression that ALL THE EXHAUST BRAKING .. is done through the VGT TURBO?

This is correct.

 

[6V92TA]

yep, the VNT in the closed position is a exhaust brake. amazing what a VNT can do, it controls boost pressure, turbo speed and exhaust back pressure.

the engine manufacturers had to go to a VNT back when they started having to use EGR, they had no way to control EGR flow expept by controlling those 3 factors previously mentioned... one of the side benefits was they also were able to use the VGT as an exhaust brake.

 

[ChrisOlson]

This is correct.

Thank you

 

[ChrisOlson]

yep, the VNT in the closed position is a exhaust brake. amazing what a VNT can do, it controls boost pressure, turbo speed and exhaust back pressure.

the engine manufacturers had to go to a VNT back when they started having to use EGR, they had no way to control EGR flow expept by controlling those 3 factors previously mentioned... one of the side benefits was they also were able to use the VGT as an exhaust brake.

Thank you
Can you define the VNT please!

 

[6V92TA]

Varibale Nozzle Turbocharger also referred to as a VGT, Variable Geometry Turbo.

on a Cummins you generally have some type of Holset water cooled turbo, with a single moving part in the turbine housing which does all the metering of exhaust passing over the turbine wheel. this video shows it better than I can explain it.

 

[ChrisOlson]

Thanks
Variable Nozzle Turbo. VNT. GOT it thanks alot