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16X Delayed, But NOT Canceled
Submitted by Berny Herrera on Thursday, October 21, 2010 - 12:39am


Development of the next-generation rotary engine from Mazda Motor Corp., first unveiled three years ago, is making slow progress despite missing emissions targets.

A top Mazda powertrain executive said today that the 1.6-liter rotary engine, called the 16X, is about 30 percent more fuel-efficient than the current rotary engine used in the RX-8 sporty car.

In fact, the 16X so far performs slightly better than Mazda's standard two-liter gasoline engine, said Mitsuo Hitomi, general manager of the Japanese carmaker's powertrain division.

But the engine is at least one model year behind schedule because of problems hitting emissions reduction targets. And Hitomi concedes it's still not ready for production.

“Maybe within two years we can tell you when we will introduce it to the market,” he said.

When unveiled at the 2007 Tokyo Motor Show, the 16X featured an enlarged elliptical shape for the combustion chamber and an enlarged eccentric center stroke in the rotor. Mazda also planned direct-injection fuel delivery in a rotary engine for the first time.

But the project moved to the back burner during the global financial crisis as Mazda diverted more resources to developing the new line of fuel-efficient SkyActiv engines, which debut next year.

Despite the rotary engine's delay and swirling rumors about its future, Mazda says dropping the program isn't an option.

Said Hitomi: “We will never give up.”

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new engine development
December 27, 2010 - 6:10pm
the comment made about compound turbocharging is very good, i have read about it and it would be a good thing for efficiency, what i want to know is when water or hydrogen be it browns gas or a panteen geet setup will be considered with the rotary. I would love to see a rear drive minivan with a gas/water combustion hybrid system, like the panteen geet where the exhaust manifold heats water up and then the vapor is combusted in the engine. Once heated up the vehicle runs mostly on water. This may not be for the sportcars but be suited to a soccer mom with the tranny being of the constant variable type to keep the engine in the sweet spot. Mazda are you listening? Is the sponsership of B.P. that important? Soon the oil company's will not be running the world and if an all electric car or a hybrid electric is ok why not a hybrid gas/water?
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engine development
December 27, 2010 - 6:19pm
the panteen geet system may not be the answer but a fexible system could be to let the exhaust gasses drive a generator to boil off hydrogen off of a water supply and then use the hydrogen for highway cruise power and add gas for acceleration. Old fashion high amperage could be used to seperate the water to hydrogen/oxygen or a dc pulsed low voltage system ala Meyer could be used to efficiently generate lots of hydrogen. Google water fuel or see whats up on Youtube, the words water and lawnmower on youtube will show examples of the Geet system, the originator is in jail on propped up charges.
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Exhaust emissions problems
October 26, 2010 - 9:38am
I have been reading about compound turbo charging, and it seems to me that the wankel engine has been shouting out loud for the last 30 odd year to be compound turbo charged. How about trying it Mazda I am sure you would get even more M.P.G and at the same time reducing exhaust gasses.
Compound turbo charging takes the exhaust gases, and heat, to drive a turbine which is connected back to the crankshaft or ecentric shaft. Very high power gains have been seen in aircraft engines which used this system.
Could it be worth a try on a wankel engine Mazda?
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Turbo compound rotary
December 31, 2010 - 2:43am
If anyone is interested there is a very good site about the theory of turbo compound charging a rotary, by the Oxford prof Paul Lamar can be found at lots of info on this site, very interesting.
Take a look Mazda.
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