Not yet but we are getting closer.
http://www.rotaryeng.net/sum-**turbo-comp.html<
http://www.rotaryeng.net/sum-turbo-comp.html
http://www.rotaryeng.net/**Oxford-640-4802.wmv<
http://www.rotaryeng.net/Oxford-640-4802.wmv
http://www.rotaryeng.net/**turbo-compound.html<
http://www.rotaryeng.net/turbo-compound.htmlWe
are getting closer to installing a DD15 truck engine turbo compound
system on a 3 rotor engine. "At the rated engine speed of the DD15,
the turbine reaches a rotation speed of more than 40,000 rpm. Power
is transferred to the gear drive, and therefore to the crankshaft,
via a shaft and a hydrodynamic coupling. This arrangement produces a
uniform and smooth crankshaft rotation despite the higher torque,
according to the company; additionally, fuel consumption is reduced
by up to 5 percent compared with a similarly [UTF-8?]specâd Series
60." I found a local Detroit Diesel repair shop and actually saw the
real thing. The shop is called "Big T's" 805 983 2408
<
http://www.bigtsftln.com/**default.htm<
http://www.bigtsftln.com/default.htmThey
kindly gave me some part numbers with prices.
These engines are lasting up to a million miles so used parts are in
short supply. If you are lucky you might be able to find one out of
a truck wreck if the engine itself was damaged. If the engine was OK
I am sure somebody would pay big bucks for it. Word is out. These
engines are in high demand. We just need the waste power turbine and
gear box. Any Mazda 20B turbo charger will work. Maybe even the
stock sequential turbo version which I have in the hangar will work.
All we need do is demonstrate a 5% or 10% improvement in BSFC and the
world will beat a path to the Wankel rotary door.
I'll kidnap the Mazda engineers here in SoCal and force them to look
:) 30% better BSFC is theoretically possible due to the lack of
exhaust valves in the rotary and that would be a revolution in
internal combustion engines. This thing would easily replace a 600
HP turbo prop and have half the fuel burn. Paul Lamar
Paul, What if you could add the turbo-compounding without the extra
turbine weight and reduction gearbox. What if it also acted like a
muffler? Got your attention yet? Another new fuel saving and power
enhancing scheme for diesels and the new generation gas engines is
the use of cooled-EGR. With an existing turbo you cool a portion of
the exhaust gases via the wastegate/boost controller and reinjest the
mixture into the engine. The throttle must be opened more to
acquire the necessary oxygen (dropping pumping losses) and boost can
go up but heat produced goes down. The rotor has become the the
mechanism for the compounding power. You would run 20psi boost on
10psi fuel maps. Ideally we could run throttle-less. Here is an
interesting GM study.
https://docs.google.com/file/**d/0B_jE2-**IDoVTfb1RiWEs0ZmJCaDQ/edit?**
usp=sharing<
https://docs.google.com/file/d/0B_jE2-IDoVTfb1RiWEs0ZmJCaDQ/edit?usp=sharing
Barry Bordes
Dave Leonard flies a turbo II 13b without a muffler. All diesels run
with wide open air throttle. There is no air throttle.
Paul Lamar
Paul, let me try this from another angle. Instead of thinking of a
rotary engine with a turbo.... think of it as*Turbine Engine *using
the rotary engine as the power turbine section with gear reduction.
This new turbine engine eliminates the expensive fuel control, burner
section, and gear reduction normally needed for turboprops. The
historic problem has been the rotary's high EGT which limits output.
This now can be mitigated using Cool-EGR like a compressed inert gas
helping to spin the rotor for free. More HP than a three rotor, plus
less weight, plus half the BSFC.
Barry Bordes
I see only an increase in the size of the best BSFC island. Any
amount of torque is available with the right gearing and an
infinitely variable gear ratio. Not mentioned in the pdf. Cars
accelerate on HP and not torque. All and all a narrow minded paper
based on a bunch of incorrect assumptions . Also I see no charts
where EGT is a parameter. All this is political based on the sky is
falling erroneous assumptions that we are going to run out of oil. I
was around in 1973 when the water melons were saying we were going to
run out of oil in 1990. Now we are swimming in oil partially due to
Fracking except the stupid water melons won't let us build a
pipeline. The answer is eliminate the moron water melons that want
to burn food for fuel.
Paul Lamar
I was working as an apprentice mechanic at a Caterpillar dealer
during that time. A lot of people were discussing the water melons
scare tactic. I said then that there is lots of oil. Eventually we
will run out, just when! New technology improves the reserve stocks.
In this area there is a lot of activity in "tight oil". This is
drilling into a geologic area that does not allow the oil and gas to
flow well. Fracing opens up the structure and allows flow. Multi
stage fracs of up to 23 fracs per well allows flow rates of 200 to
300 barrels per day with some gas that flashes off when the pressure
is reduced. One company is planning a 32 well pad, with directional
drilling going 1-2Km's.
Dale Davies
Dale your 100% right..
I worked in North Dakota, in the Williston Basin oil field for Fluid Packed
Pump a division of Armco Steel. Over and over we had oil wells that showed
huge potential drilling Vertical holes, but production would quickly slow.
I moved to Wyoming and started working for Haliburton, training in
Hydraulic Fracking, of coarse back then we did not know Horizontal Drilling
and Fracking would be so productive, we knew the oil was their in loads.
Long since, I moved back to New York State and the local cousins of the
flat earth mob is blocking Fracking. I have been traveling the state with
others fighting for 2nd Amendment Rights, and decided to contact a
Haliburtion Office and speak to an Engineer about the old things I learned
verse new Horizontal Fracking. What an eye opener, what would have been
days of continuous setup and single fracks, are done in a mass production
line of fracks along the horizontal plane of the hole.
This results in a single oil well as if it were ten, twenty oil wells
linked together, the engineer said its very straight forward and very safe
to the environment. In those years I worked Wyoming, Montana, North
Dakota, Utah, Colorado I did not hear of any environmental impact.
George F. Curtis Jr.
Water melons hate fracking because it works :)
Paul Lamar
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