Hi,
I have seen it mentioned a few times that to protect the drivetrain you want to avoid torque low down in the rev range, but nobody has provided any good sources or sound engineering rationale for this info.
Is it just a widely propagated myth?
Is a torque value of X more harmful at 2000rpm than it is at 4000rpm?
Does it really matter if it comes in early or later in the rev range?
A big blat of torque, (like the old PD engines) feels harsh to the flimsy human in the passenger seat, but does it really matter mechanically? Is it all about the peak torque rather than the rate of increase to get there.
Do components genuinely care if it takes half a second to go from 100-500Nm, rather than three seconds?
As an aside - what happens when you try to keep the torque up at higher revs on a turbocharged engine - Even if you are requesting max output from the turbo, does the boost pressure drop as the engine is gobbling more air?
Is this easier on the turbo than requesting a big boost pressure at low/mid revs?
How kind/hard on a diesel engine is keeping it pulling up to it's redline, rather than it tailing off at 75% revs?
Finally - DSGs - is there a more sympathetic way to map the engine to care for them? or is it all just peak torque that matters?