[urq] Turbocharging & Elevations

[John Koenig]

Sorry guys, you missed my point.  I completely understand that horsepower at
the wheels is different than horsepower at the crank or flywheel.  My point
was that "whp" is a bogus unit of measurement.  A quick search of the SAE
website turns up 558 references to "bhp" while a seach for "whp" turns up
exactly zero hits.  To be meaningful it's important to be clear about what
is being measured, and how, but in the serious engineering community "whp"
doesn't mean anything.  Just clarifying ...

And, yeah, I agree, most of the time it's torque that rules!!!

John



----- Original Message -----
From: Ingo Rautenberg <i.rautenberg at waratap.com>

> I don't think so. An engine might be making 400 hp, but after driveline
> losses, that equates to something under that -- typically losses amount to
> 20% give or take another 5%.  So while the engine may put out 400 hp, that
> may be 300 hp at the wheels.
>
>
> ----- Original Message -----
> From: "John Koenig" <johnkoenig at greennet.net>
>
> > After seeing it recently in European Car, I've been wondering where this
> > "whp" stuff comes from.  I don't recall ever seeing "chp" or "fhp" when
> not
> > measuring at the wheels.  Isn't it all brake-horse-power (bhp)?
> >
> > I understand the desire to identify measurements with a chassis dyno,
and
> > I'm open to being wrong, but isn't this just sloppy use of made-up
terms?