BMW diesels for Cadillac?

"Dave Plowman (News)" > wrote in message
...

> I was reasonably impressed with my test drive of a 530D auto - it felt
> slightly more lively at town speeds than my current 528.

That I understand, but the 530 is a different animal than the 528. The
engine really changed the car.

"Dave Plowman (News)" > wrote in message
...
> In article >,

> Think you're a bit confused about torque and BHP.

No I'm not.

I am pointing out that unless that great torque can be used to develop high
end horsepower.....who cares. 10 times the low end torque is essentially
meaningless if high end horsepower is unachievable, and as good as the new
diesels are, they still haven't bridged that gap in a way that compares to
petrol response.

In article >,
Raybender > wrote:
> Since a normally aspirated gasoline engine doesn't develop either
> torque or horsepower until relatively high rpms

Please. Any motor of any type which works and turns develops both torque
and bhp. At any rpm. If it developed neither, it wouldn't turn. It only
needs to develop just slightly more than its losses through friction, etc,
of course.

Torque is simply a measurement of weight and distance without time being a
factor. Add time to the equation and you get BHP.

To get BHP from torque use this formulae.

2 x pi (22/7 or approx 3.142) x torque (ft.lbs) x rpm (revs per minute)
--------------------------------------------------------------------------
33,000

Do this and you'll find out the BHP your engine is developing at maximum
torque. Which is always less in practice than the peak bhp. As is the
torque, generally, at maximum bhp. The torque you can also work out at
peak BHP by using this formulae.

--
*Always borrow money from pessimists - they don't expect it back *

Dave Plowman London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" > wrote
> Raybender > wrote:
>> Since a normally aspirated gasoline engine doesn't develop either
>> torque or horsepower until relatively high rpms
>
> Please. Any motor of any type which works and turns develops both torque
> and bhp. At any rpm. If it developed neither, it wouldn't turn. It only
> needs to develop just slightly more than its losses through friction, etc,
> of course.

Dave, the total area under the 3.0L gas engine's HP curve is greater
than that under the diesel's 3.0L HP curve. As Ray says, it's HP that
gives acceleration, because you have to measure the *WORK* done
to get to a specific speed. Torque != work. That's all that Ray was
trying to say (and Ramone, also, I believe.)

Floyd