Rotary engine development halted at Mazda?

[Victa]

Problem is, until recently the push towards environmentally friendly engines hasn't been as strong.

Rotary problems are because they are essentially 2 stroke
If they could turn it 4 stroke, by adding a combustion chamber with hydraulic or pnumatic valves like a F1 or motoGP bike a lot if issues can be solved.
Problem with that is its still costly, complex and relatively unreliable.

Down side to this is that by adding all of that you have made it into a 4-stroke and thrown away all of the benefits of the 2-stroke/rotary...

Chris.

[bd581]

And that's the problem exactly.
Lose what makes a rotary what it is and make it what it needs to be, or forget about it and let the rotary die a dignified death?

[Reedy]

Heh there's still plenty of rotaries out there in circulation. World time attack had about 30% of cars running rotaries.