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Forum index » Science and Technology » Engineering » Mechanics
The Hybrid - Hybrid Drive Train (Was APUs From Turbo Chargers)
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Steve Spence
science forum beginner


Joined: 04 Apr 2005
Posts: 22

PostPosted: Mon Nov 21, 2005 3:06 pm    Post subject: Re: The Hybrid - Hybrid Drive Train (Was APUs From Turbo Chargers) Reply with quote

werty wrote:
Quote:
The Ceramic "expander" is needed in a TurboJet engine to be cost
effective
and it COSTS !
The Germans have built 2 stroke diesels that are twice the effeciency
of
gas engines .
They DO not require dual compressors , only a Turbo .
to start . The effecncy is upped by Exhausting thru ports and
intaking thru
valves in head . This allows super "timing" . The exhaust is opened
by ports , but intake is timed perfectly withcams/valves in head .
There's lots of time at BDC !

My two stroke diesel has a blower that blows into ports at the bottom
and exhausts through valves at the top.

--
Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html
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werty
science forum beginner


Joined: 21 Nov 2005
Posts: 1

PostPosted: Mon Nov 21, 2005 2:57 pm    Post subject: Re: The Hybrid - Hybrid Drive Train (Was APUs From Turbo Chargers) Reply with quote

The Ceramic "expander" is needed in a TurboJet engine to be cost
effective
and it COSTS !
The Germans have built 2 stroke diesels that are twice the effeciency
of
gas engines .
They DO not require dual compressors , only a Turbo .
to start . The effecncy is upped by Exhausting thru ports and
intaking thru
valves in head . This allows super "timing" . The exhaust is opened
by ports , but intake is timed perfectly withcams/valves in head .
There's lots of time at BDC !




Bret Cahill wrote:
Quote:
If the efficiency of a turbo only system bypassing the cylinders could
be improved it might make sense on what should be called a "hybrid
hybrid."

When you are just sitting or moving slowly in traffic you bypass the
cylinders and only run the turbo system to charge up a fast discharge
battery to power an electric motor. Then you might get 45 mpg city
even in a big SUV.

And when you haul your boat up a 6% grade at 70 mph you run the entire
engine and get 3.2 mpg.


Bret Cahill
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Bret Cahill
science forum Guru


Joined: 05 May 2005
Posts: 480

PostPosted: Sun Nov 20, 2005 3:58 pm    Post subject: The Hybrid - Hybrid Drive Train (Was APUs From Turbo Chargers) Reply with quote

If the efficiency of a turbo only system bypassing the cylinders could
be improved it might make sense on what should be called a "hybrid
hybrid."

When you are just sitting or moving slowly in traffic you bypass the
cylinders and only run the turbo system to charge up a fast discharge
battery to power an electric motor. Then you might get 45 mpg city
even in a big SUV.

And when you haul your boat up a 6% grade at 70 mph you run the entire
engine and get 3.2 mpg.


Bret Cahill
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