engine/turbo theory question

[Lawrence C Leung]

I think kris is right. Most of the energy for a turbo comes from exhaust
heat, the drag it entails in backpressure is considerably less than the
recovered heat energy. The concept of an external hydraulic pump can't
recover the otherwise lost thermal energy. Hence, you are using more
energy than you gain.

LL - NY

On Tue, 17 Oct 2000 04:59:09 -0700 (PDT) Kris Hansen
<kris_j_hansen at yahoo.com> writes:
>Well, that sounds great, but what will create the
>hydraulic pressure to drive the turbo? A pump? Won't
>the hydraulyic pump drag on the engine more than a
>little turbo in the exhaust? Kind of like a
>supercharger?
>
>Kris
>
>--- Todd Phenneger <tquattroguy at yahoo.com> wrote:
>> No,
>>   The turbo does hamper flow and cause a power loss.
>>  It just
>> makes WAY more power than it loses.   If you could
>> have no
>> restriction at all, you'd get even more power. 
>> Hence the
>> development by Garret of that Hydraulicly driven
>> turbo they want
>> to make.  No restriction at all makes for FAST spool
>> up, and
>> instant full boost at low RPM.
>>   l8r
>>     Todd
>> 
>
>__________________________________________________
>Do You Yahoo!?
>Yahoo! Messenger - Talk while you surf!  It's FREE.
>http://im.yahoo.com/