Re: Peugeot generator engine?

Bob Bartch (bbartch@jps.net)
Fri, 07 Feb 1997 08:31:53 -0800

PeugeoToGo@aol.com wrote:
>
> You have a great idea there, Bob.
>
> I think the XD2S will do better at 1800rpm with direct drive than at some
> higher speed through a gearbox because of losses in the gearbox, unless you
> really needed the extra horsepower available at higher rpm. On the XD2,
> non-turbo engine, torque is within 2% of maximum between 1800 and 2300 rpm;
> fuel efficiency is optimal and almost flat between 1800 and 2800 rpm; but
> horsepower doubles from 1800 to 4500 rpm. I can't find the corresponding
> curves for the XD2S, but I suspect that the curves are similar--maximum
> torque is rated at 2000, which is where full boost is nominally achieved as
> well.

Thanks for that most important part. I wasn't sure where turbo boost
kicked in. I would have thought much higher. So you believe I should
leave the turbo on, then, I guess. I felt at 1800 rpm I might be better
off with a non-turbo engine.

As far as heat exchangers go, I understand the greatest heat is right at
the exhaust manifold, but I doubt there is a marine-style manifold for
it. That being true, then I guess I have to make an in-line muffler
style heat exchanger just "aft" of the manifold.

Again, thanks for the info, it makes me feel surer of what I want to
do. Hope to tackle it this summer.