Exhaust brake identification

[smpdodge99]

Hope this is a "stupid question" How can one know if a truck has an exhaust brake brake by just looking at pictures of a truck? Looking to purchase a dually flatbed and would really like a exhaust brake. Asked the salesman and he couldnt really tell me yes or no. Just that he thought so Truck is 07, 6. 7L 134,000 miles. 6spd ,truck is exactly what i need for my business. Exhaust brake isnt a necessity but would be a plus. thanks for your help.

 

[HBarlow]

The salesman you were speaking with should be forced to wear a dunce cap or a "STUPID" badge and stand in the corner reading product brochures.

If you are asking about buying a 2007. 5 or later Dodge Ram with Cummins ISB6. 7 engine NONE of them have an exhaust brake as an add-on device in the ordinary sense of the word.

However, ALL ISB6. 7 engines have as standard equipment a variable geometry turbocharger which automatically closes it's turbo vanes and provide exhaust braking just like an old-fashioned add-on exhaust brake downstream of the turbo.

If the Exhaust Brake function switch in the bottom center of the dash console is in the "ON" position and lighted, whenever the driver lifts his foot of the accelerator pedal the ECM closes the turbo vanes and creates full exhaust braking. The ECM/PCM are also programmed to downshift the automatic transmission to amplify exhaust braking.

The Dodge-Cummins is the only one of the light truck manufacturers that currently provides this feature.

 

[Jim W]

All 6. 7L engines with the Stock Variable Geometry Turbo charger will have the exhaust brake. This is part of the emission control equipment on the truck which is standard. The VGT will remove the soot build up in the turbo do to the emission control equipment.

Jim

 

[smpdodge99]

Thanks guys much appreciated!

 

[HBarlow]

All 6. 7L engines with the Stock Variable Geometry Turbo charger will have the exhaust brake. This is part of the emission control equipment on the truck which is standard. The VGT will remove the soot build up in the turbo do to the emission control equipment.
Jim

Huhhh?

The VGT is the variable geometry turbocharger. It is NOT part of the emission control equipment. It provides the exhaust braking function by closing and blocking the flow of exhaust.

The DPF (diesel particulate filter) is part of the emissions control equipment that removes soot from the exhaust stream.

 

[sag2]

All 6. 7 trucks did not have factory exhaust brake. The very first trucks offered it as an option. If it does not have the switch, there is a switch package to add it. In addition to the switch, the brake has to be turned on in the ECM.

This is from the sales code guide, first edition 11/06. The later editions had it included as standard equipment with a note in the engine selection.

DIESEL EXHAUST BRAKE
M/H ETJ
$436 FWP $495 MSRP sales code NEN

 

[HBarlow]

All 6. 7 trucks did not have factory exhaust brake. The very first trucks offered it as an option. If it does not have the switch, there is a switch package to add it. In addition to the switch, the brake has to be turned on in the ECM.

This is from the sales code guide, first edition 11/06. The later editions had it included as standard equipment with a note in the engine selection.

DIESEL EXHAUST BRAKE
M/H ETJ
$436 FWP $495 MSRP sales code NEN

I didn't know that. Seems pretty silly to sell the switch and possibly the wire harness as an option when the VGT was an integral part of the engine.

 

[Jim W]

Huhhh?



The VGT is the variable geometry turbocharger. It is NOT part of the emission control equipment. It provides the exhaust braking function by closing and blocking the flow of exhaust.



The DPF (diesel particulate filter) is part of the emissions control equipment that removes soot from the exhaust stream.

Harvey,

I do not normally disagree with you but I do on this statement from you.

I am a retired engineer from a large heavy equipment manufacture and one of my last assignments was working with Tier II, Tier III and Tier IV emissions on heavy equipment machines and their interrogation into them.

The VGT is part of the emission system on these engines. From the EPA standpoint anything that is part of the engine needs to be emission certified by them. The entire engine is tested as a unit and all components on the engine are part of this system.

If you do not belive me on this check out the SEMA site and review the Calf emission rules for diesel trucks. Since this is the only state that is opening the engine compartment and failing diesel engine trucks that have after market components on them with out a emission certificate on these components.

Jim

 

[Bob4x4]

On another note exhaust brakes have been exempted of needing an OE sticker to pass the visual on Cali smog test.

 

[HBarlow]

Harvey,
I do not normally disagree with you but I do on this statement from you.
I am a retired engineer from a large heavy equipment manufacture and one of my last assignments was working with Tier II, Tier III and Tier IV emissions on heavy equipment machines and their interrogation into them.
The VGT is part of the emission system on these engines. From the EPA standpoint anything that is part of the engine needs to be emission certified by them. The entire engine is tested as a unit and all components on the engine are part of this system.
If you do not belive me on this check out the SEMA site and review the Calf emission rules for diesel trucks. Since this is the only state that is opening the engine compartment and failing diesel engine trucks that have after market components on them with out a emission certificate on these components.
Jim

Jim,

I know that is your background and do not believe you didn't know better. But I do believe your original post was incorrect. I think you simply got your abbreviations confused and it should be corrected for a less well informed reader.

The VGT is only part of the emissions control equipment from the perspective of a government bureaucracy regulating emissions . . . meaning only that the VGT cannot be altered or replaced with a non-standard component because to alter or replace it with a different component WOULD significantly alter engine operating characteristics and theoretically change the amount of contaminants emitted.

In laymen's terms, the VGT does nothing to control or eliminate exhaust emissions but could certainly increase emissions.

And it is the DPF, not the VGT, that captures soot.

I suppose we'll have to agree to disagree on this.

 

[Jim W]

Harvey,

I did re-read my original post and yes it could be confusing to a newbe. But what I was getting at, is the turbo is subject to soot build up from the EGR system and the exhaust of the 6. 7L engines. This is why Dodge had a recall and my Turbo was Drilled and Cleaned by Dodge, TSB 11-002-08 &11-001-08.

ALso on the Owners DVD and Audio CD part number 1-68049170AA, that was provided by Dodge recommends to use the exhaust brake to allow the VGT slider to be kept cleaned.

This is why I am stating that the VGT is part of the emission system.

Jim

 

[CSkal]

I didn't know that. Seems pretty silly to sell the switch and possibly the wire harness as an option when the VGT was an integral part of the engine.

Kinda' sounds like the block heater deal, just need a cord but all engines have the heater element...

 

[Bob4x4]

the VGT is a very important part of the emissions pkg. With out the very quick initial spool and opening up on the big end the 6. 7 could not have been sold at the current power level