New 16X Rotary Engine
12-11-07, 10:44 PM
#76
InsaneRotaries.com
All that bling had be seeing double
12-12-07, 10:34 AM
#79
No distributor? No thanks
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Yep, somehow I missed that the eccentricity was completely different now. Any idea if the housings are still the same length, such that it might still be the same length as a 13B?
Mazda seems to be the only folks who really have the technology and commitment to make these fundamental revisions. I've been hoping to see something like this for a long time. Sure they didn't like what they got in the 13A, but that was Mazda's only departure, so far as I know, from the early 10A cross-section, and this is only the second. Surely they've gotten smarter since then and finally have all the tools to get the geometry fully optimized.
I'm surprised, though, to see that the rotor physically grows as well as the eccentricity. They'd have to save a lot of weight just to keep the revs were when they left off, not to mention making any improvement. I guess the new shape will breathe that much better or cleaner.
12-12-07, 12:35 PM
#81
Actually, the rotor becomes narrower by something like 5mm according to some. I believe the side plates are nearly the same thickness, but being aluminum now, I can't be certain. Also the front plate of the Renesis is thicker so it will most likely be thicker on the 16X as well.
12-12-07, 06:22 PM
#83
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I'm just really interested to see the torque specs off that thing. If it does anywhere near say 200ft.lb of torque I would be a happy person. Funny thing, I think that today was the first day that I actually pulled up the specs off the renesis engine:
232hp
159 ft/lb
Actual Dyno have been floating around:
175whp
125 ft/lb
232hp
159 ft/lb
Actual Dyno have been floating around:
175whp
125 ft/lb
According to Paul Lamar, the gross energy available in the air and fule combustion in the present engine is about 700 horsepower.
232 to 175 (net) horsepower figures result from our best attempts at recovering the gross power by the old mechicanical process. That process is only 30% efficient at best.
If we turbocompounded the engine, 60% of 700 horsepower is around 420 horsepower. All without using a single drop more of fuel or a single cc more of air. 420 horsepower from the present engine would be a good thing, right?
So, when ericgrau says:
Dynos for the Renesis range from 170wHP (~200bHP) to 200wHP (~235bHP), often around 190 (~225bHP). Just like a piston engine, it varies quite a bit based on how well it's broken in
.. . .
280+HP seems reasonable using the Renesis' power to displacement ratio and ignoring all else.
.. . .
280+HP seems reasonable using the Renesis' power to displacement ratio and ignoring all else.
That would be a good thing, wouldn't it?
What do you think?
Buzz :-)
12-17-07, 01:51 PM
#85
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From the sound of Patman's reply, the forum does not seem to be familiar with turbocompounding. I will establish a separate thread elsewhere for that topic and leave this thread for the 16X introduction.
Please don't eat a rotor housing, patman: there are easier ways to add iron to your diet. JUST KIDDING! :-)
Buzz :-)
12-17-07, 04:02 PM
#86
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Much of the knock/det problems will be solved. Because fuel is not dispersed until milliseconds right before ignition, the window for det is much smaller.
My bmw 335i runs 13:1 air/fuel ratio under full boost across the entire rpm range (factory tune), thanks to DI.
Fred
12-24-07, 09:50 AM
#92
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"The largest efficiency already attained, in maritime Diesel engine with 90,000 HP is 52%. " http://ecen.com/content/eee7/motoref.htm
I have been told that the VW TDI motor was 50% but I could not find any data on it. Efficiency increases with an increasing compression ratio. An infinite compression ratio be the most efficient but clearly impossible. Diesel is clearly the way to go. Diesel Wankel engines have been produced.
12-24-07, 09:52 AM
#93
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I hope you are hungry! This is something that we are going to see in our life time!
"The largest efficiency already attained, in maritime Diesel engine with 90,000 HP is 52%. " http://ecen.com/content/eee7/motoref.htm
I have been told that the VW TDI motor was 50% but I could not find any data on it. Efficiency increases with an increasing compression ratio. An infinite compression ratio be the most efficient but clearly impossible. Diesel is clearly the way to go. Diesel Wankel engines have been produced.
"The largest efficiency already attained, in maritime Diesel engine with 90,000 HP is 52%. " http://ecen.com/content/eee7/motoref.htm
I have been told that the VW TDI motor was 50% but I could not find any data on it. Efficiency increases with an increasing compression ratio. An infinite compression ratio be the most efficient but clearly impossible. Diesel is clearly the way to go. Diesel Wankel engines have been produced.
01-31-08, 09:24 AM
#94
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News Update From Japan!!!
NEWS UPDATE FROM JAPAN!!!
According to option magazine's editor after he spoke with Mazda's Imoto-San who is some kinda marketing guy in Japan, he was told 16x is looking at late 2010 production date in Japan. NO turbo in the plans for production and the more interesting thing is he said Mazda is looking into a far future with the rotary so to an extent where they may attach a hybrid motor to it if need be. Then he says the next rotary car will be the most exciting car Mazda has ever produced...blA, BLA...
According to option magazine's editor after he spoke with Mazda's Imoto-San who is some kinda marketing guy in Japan, he was told 16x is looking at late 2010 production date in Japan. NO turbo in the plans for production and the more interesting thing is he said Mazda is looking into a far future with the rotary so to an extent where they may attach a hybrid motor to it if need be. Then he says the next rotary car will be the most exciting car Mazda has ever produced...blA, BLA...
01-31-08, 10:53 AM
#97
It's just a better more efficient injector placement. The injector as it sits in the picture is opening during the maximum intake volume (800cc). Most likely it's opening slightly after the intake closing so as to 1) Be more fuel efficient 2) place
the fuel more directly in the "pocket" for a better burn. By definition direct injection would put the injector under that guys arm-pit area (by the spark plugs), and would open very close to TDC (right before maximum compression).
-J
the fuel more directly in the "pocket" for a better burn. By definition direct injection would put the injector under that guys arm-pit area (by the spark plugs), and would open very close to TDC (right before maximum compression).
-J
01-31-08, 11:29 AM
#99
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It's just a better more efficient injector placement. The injector as it sits in the picture is opening during the maximum intake volume (800cc). Most likely it's opening slightly after the intake closing so as to 1) Be more fuel efficient 2) place
the fuel more directly in the "pocket" for a better burn. By definition direct injection would put the injector under that guys arm-pit area (by the spark plugs), and would open very close to TDC (right before maximum compression).
-J
the fuel more directly in the "pocket" for a better burn. By definition direct injection would put the injector under that guys arm-pit area (by the spark plugs), and would open very close to TDC (right before maximum compression).
-J
