Check out this link from Car and Driver:
http://blog.caranddriver.com/new-spin-mazda-files-patent-for-new-gen-rotary-engine-heres-what-it-tells-us/
robert pay
Looks like the RX9 will have a turbo charged 16B with 400 HP.
Aluminum end housing so no need to reinvent the wheel for a LSA one
rotor.
Here is the patent discussed.
Not mentioned but it might be a turbo compound hybrid.
Paul Lamar
No new invention discussed in that pdf. Taking the same ports and just
swapping places gave no new product. All that is accomplished is the
heat is put out the top away from body and battery banks. Less than weak
patent app. It address only their mountings and not the Wankel engines
dynamics. IMHO. A simple petition and Judicial injunction could stop the
nonsense filling.
Michael Nash
Filling? You mean filing?
The people in the patent office are not competent in a lot of fields so
they can't tell a good patent
from and old or bad idea. Some of the dumbest things have been
patented. Especially
if the patent t is complicated and wordy :-)
I know because I am in that process right now.
Paul Lamar
My reading finds Mazda found rotor width over 75 mm did not let the
flame front get to the sides of the rotor. 16X rotors go back to 12A
width of 70 mm. As I wrote in a previous post, I think Mazda engineers
will use the rare 13A engine eccentricity as e-shaft bearing dimensions
are developed saving cost. Same goes for the timing gears. The 13A
radius to eccentricity ratio was 6.875:1 instead of the now used 7:1
ratio. I think that to further increase torque they will use a radius of
125 mm with the 17.5 mm eccentricity. This will give a displacement of
3182.6 cc which is real close in Mazda speak for 16X. In Mazda world
that is 1591 cc. Naturally aspirated power could be 290 based on RX8
numbers with displacement increase alone. With a turbo 400 HP would be
real easy. Add in power recovery and more boost and I could see 700 HP
street drive able.
Dale Davies
Narrow rotors have drawbacks as to the oil pressure in the rotor bearing.
The rotor bearing limits the RPM.
They could have used two plugs or four plugs some side by side.
Paul Lamar
Agreed on the plugs. Going with described dimensions and 80 mm width you
get 3637 cc engine. 320 HP with easy 500 HP turbocharged. Should provide
good torque so less gear required to also aid fuel economy.
Dale Davies
Recent CFD suggest two plugs side by side is the way to go,
Here is the problem with the rotor bearing. It might be OK at 8000 RPM
but 11,000 is probably
totally out of the question.
Paul Lamar
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