Re: NR locos

[Ben Armstrong <ba13@uow.edu.au>]

On Mon, 17 Apr 2000, Rob Kearey wrote:

> Ben Armstrong wrote:
> 
> > Just to clarify- is the HP in an NR limited by changing the maximum
> > notch that the engine revs to, or some other means?
> 
> It's an interesting topic. I suspect that's what they do, though they
> might also be lowering turbo boost and injector timing as well (that
> would be the elegant way).

Quite possible with the EFI on the NR's. Though reducing power by
changing the timing from optimum would be kinda self defeating. Sure-
you would get less power, but you would still be using the same amount
of fuel which would defeat the purpose of variable HP. You
could use the same argument for reducing boost pressure.

> > I thought that the variable horsepower control would have worked by
> > changing the maximum amount of fuel the governor could let the engine
> > use in each notch.
> 
> Or that too.

Sorry about that sentence! It is easy to get 'out of control' on this
topic! :-)
 
> > Ben Armstrong                                         /
> 
> Rob K

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