Mazda gunning for 18:1 compression with gasoline engines by 2017
 

Not sure if this is a dupe. Delete if it is.
Impressive if they do it in time for a 2017 production model.

Mazda eyes 18:1 petrol compression - motoring.com.au

interesting news...HCCI is on the way....

Skyactiv engines could be the future of Mazda for years to come...

Fixed. Not sure where "could be" came from...

At least Mazda won't have to worry about making a reliable ignition system then :lol:

You got it! :)

I'm curious how they'll address the transition problem over from compression ignition to spark ignition at higher RPMs.

Also, I'm looking forward to how Mazda means to manifest the "adiabatic combustion chamber" that they're referring to.

Electric will be manatory in cali in 2018?

I feel really sorry for those who live in that state

Looks like the "adiabatic combustion chamber" referred to earlier is some sort of cylinder coating, according to this article.

Mazda targets petrols that act like diesels, says six-speed autos are "enough" | CarAdvice

oh apparently since last tuesday when that was published and now, we're going hydrogen. :Eyecrazy:

so batteries are out…

but don't feel sorry, we're doing this to ourselves

rofl, well, NY is about the same, so many tree huggers here and our emission rules are as close as cali as possible, one of the example is it's illegal to buy non-factory cat in NY now :(

if california truely does go hydrogen mandated it might give new life to rotary powered vehicles

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with 1/2 the power ?

its not gonna work, piston engines is not great for hydrogen, and they will never allow foreign companies like Mazda to dominate the market.

It would mean a coating that resists the transfer of heat... such as that found in the Renny. :o

its actually kind of funny.

so we're going hydrogen because toyota and honda both have new hydrogen cars coming out.

as is the case with just about every automotive innovation, Mazda already did the hydrogen car, almost a decade ago, in 2006.

i didn't look at the toyota, because its going to be extremely lame and i'm already bored of it, but the honda is hydrogen to a fuel cell to an electric motor, so its not internal combustion.

i did some looking, and gasoline is very nice as a fuel, because we can fit many hydrogens on a carbon molecule, its something like C2 H18, while hydrogen gas is just H2.

Yeah. It was definitely anticlimactic reading that that's all it could be. We shall see though if they had some sort of breakthrough in metallurgy or something like that. :(

they can't even manage to get 14:1 in US, it's just 13:1, thx to garbage gas we have :(

and ... how are they gonna do some ultra high compression like 18:1 ... I dunno, magic dust ? :lol:

For the SkyActive design that they have, they can't risk 14:1 on US pump gas, so they dropped it to 13:1. I presume that if they are working toward 18:1, that it will have a different and more advanced design than current SkyActive. 13:1 is done because they are inherently trying to avoid detonation. At 18:1 compresion they won't be avoiding detonation, but using it intentionally.

Quality of the gasoline isn't an issue if they use direct injection, which they will, but GDI has a host of it's own problems that need to be addressed.

How about gunning for a new rotary powered sports car by 2017?

^^^ Not happening
If the information out there is to be believed and there is no reason it shouldn't...

Mazda has stopped any sort of R&D for a rotary powered vehicle.
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Not quite accuracte wcs, considering that the day after the CEO made that statement they unveiled a brand new 330cc rotary engine at the Tokyo Auto Show. Not what we are hoping for, and I agree that 2017 is probably not gonna happen for a car with a primary rotary powerplant, but saying that they pulled the plug on the rotary is inaccurate. Development does continue on the rotary...

I stand corrected.

Not only that but R&D on the larger rotaries continues as well (No, not 3 and 4 rotor, don't get excited, haha!).

Paul.