What happened to the Miller Cycle engine?

[M=SP^2]

I was reading some review for the 2002 Millenia S and cam accross this:

Also, true to Mazda tradition the Millenia incorporates pioneering technology under the hood. A Miller Cycle engine puts out an impressive 210-hp and 210 lb-ft of torque from as low as 3,500 rpm, resulting in an 8.2 second sprint to 100 km/h. Miller Cycle? The engine uses a Lysholm compressor and delayed intake valve timing to produce big performance from its diminutive 2.3-L displacement. A smooth and responsive 4-speed automatic transmission with a button actuated gear holder is standard. Fuel economy is the obvious benefactor with the Millenia achieving 12.2 / 8.0 L/100km (city/hwy). That's fairly impressive for such a substantial car - it weighs in at 1,582 kg (3,488 lb).

Those are some impressive numbers, I think it'd do wonders on a platform like the Mz3. Turbocharge it and stick in the next Mazdaspeed and....wow!

 

[wongpres]

Here's why the Miller Cycle concept can never be popular:

http://autozine.kyul.net/technical_school/engine/petrol2.htm#Miller Cycle

 

[mikeyb]

When I was working for a Mazda dealer in the parts department. There is alot of problems with the Miller Cycle engine in the Millenia S. I like the Millenia but I wouldn't buy an S model.

 

[neit_jnf]

Suposedly there's variances to the Miller cycle engine still used today. The 2004 Toyota Prius' gas engine is being marketed as a high efficiency Atkinson cycle, which is a delayed compression, longer expansion just like the Miller.