Miller Cycle
10-04-2010, 06:56 PM
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Miller Cycle
While on my quest for a new car, I decided I'd look at the Bonneville competitors, not much competition, might I add. Needless to say, I stumbled across the Mazda Millenia, which has, you guessed it, the Miller Cycle engine. I'll give you all a link on it, see what you think. Has anyone heard of this thing? 
http://www.examiner.com/auto-in-orla...r-cycle-engine
http://www.examiner.com/auto-in-orla...r-cycle-engine
10-04-2010, 09:50 PM
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The computer isn't going to mess up the cam timing, It'* static. the regular cams just keep the intake open longer to reduce pumping loss.
10-04-2010, 10:03 PM
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you know.... i have to wonder if the lost air(therefore power) could be made up by going with a very high static compression and using direct injection to keep all of the fuel inside the combustion chamber....
10-04-2010, 10:26 PM
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I really don't understand the reasoning of doing this except for a single piston engine application where there aren't other pistons providing the inertia to allow the engine to utilize all the compression possible. And then you have to use a supercharger for it to work? Well then if you have to boost, wouldn't you want to make the most of it? The whole thing smacks of being different for no other reason to be different. Maybe Mazda should have sold the idea to Volvo. They like to do stuff just because.
10-04-2010, 10:33 PM
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like i mentioned, a high enough static compression and direct injection SHOULD overcome the need for boost and give a nice efficiency boost due to the higher CR.
one of the people i know who grinds cams for fun told me that with higher compression(like 11:1 and up), you need to have a later IVC to bleed off some of the dynamic compression to have any chance at running on lower octane fuels.
kinda seems like the same idea, no?
one of the people i know who grinds cams for fun told me that with higher compression(like 11:1 and up), you need to have a later IVC to bleed off some of the dynamic compression to have any chance at running on lower octane fuels.
kinda seems like the same idea, no?