Originally Posted By: Shannow
Clearly we have different understandings of "technical paper"
Technical Artice. Regardless of the semantics game, there is clearly more Technical data in the
Diesel World Technical Article than the fluff piece written in Jalopnik.
Originally Posted By: CleverUserName
The 2.8 Duramax is not a VM engine. GM made a number of changes the the A428 to solve it's shortcomings and make it more robust for a truck application.
-New Cylinder Head
-Bottom End Modifications
-Smaller VGT Turbo
-Denso CR Solenoid Injection
-EGR, DOC, DPF, SCR
-Etc....
Originally Posted By: Shannow
Per your "paper"
Quote:
The engine, though new to the North American market, has been on sale globally since 2011. It launched with 2.5- and 2.8-liter versions of the motor we will have starting in model year 2016. This revised 2.8-liter motor has significant changes that will be rolled out globally with some changes specific to our North American market.
Yackley told DW that at its core, the block, crank, cylinder head, all the valve train, the camshaft and the entire top end are common with the global application. “The reason we’ve done that is it’s a proven engine around the world in key markets… (from) 2011 when we launched it.”
Originally Posted By: Shannow
BTW, your "paper" refers to 200hp (147KW, and 500NM)...'zackerly the same as the VM "paper" that I linked to
Yep correct. GM intially made the first refinements to the A428 when launched in 2011. There was another evolution when the 2.8 rolled out. Then, later, NA specific enhancements which also differ from the global 2.8 engine.
-New Cylinder Head
-Bottom End Modifications
-Smaller VGT Turbo
-Denso CR Solenoid Injection
-EGR, DOC, DPF, SCR
-Etc....
The above components have been redesigned from the original A428. It is not a VM A428. It is not made by VM.
We have lower NOx limits in the US, which is why our trucks makes less HP. The technical article touches on that but doesn't provide specific details.
More NA data:
http://www.gmpowertrain.com/engines/docs/GMQD16CL660_LWN_Product PDF.pdf
I'm glad I could help you understand more about our trucks.