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-   -   youtube: Skyactiv explained (https://www.miataturbo.net/media-53/youtube-skyactiv-explained-66618/)

m2cupcar 06-18-2012 12:59 PM

youtube: Skyactiv explained
 

Braineack 06-18-2012 01:05 PM

fuel at 3000psi?


maybe he meant 300?

curly 06-18-2012 01:14 PM

Eh, the only thing I learned was the transmission's torque converter/clutch system. Which isn't terribly interesting.

I'd like to know more about how they actually achieved 40mpg. I'm not sure 14:1 compression, really good bearings, and a spiffy transmission add up to a 40mpg 2 liter.

I know it shuts the engine off at a stop and uses a compression cycle to start it again, which is awesome, but I'm not sure it's idle has anything to do with it's mpg rating.

Edit: Oh, yeah, the fuel thing sounds scary. I wouldn't be surprised if it was 3000psi. I'm assuming that's one pump at the tank, and one at the engine actually delivering the 3000psi. To safely deliver 3000psi of fuel all the way from the tank would probably go against their weight savings philosophy. Those would be some beefy lines.

triple88a 06-18-2012 01:19 PM

My research shows 3k.

Curly my friend in a civic.. she stops her engine on every light.. pushes 39mpg city.

Braineack 06-18-2012 01:22 PM

I feel like fuel rails being at 3000psi is cause for concern.

triple88a 06-18-2012 01:23 PM

As far as i have found theres a fuel pump in the tank and another one right before the fuel rail and from there on its 3k psi.

Braineack 06-18-2012 01:34 PM

3 Attachment(s)
injectors spray fuel funny and pistons are designed for it:


this video does flow rating at the end at 5bar (72psi) so unsure what they look like at 3000 :)


https://www.miataturbo.net/attachmen...ine=1340040874

https://www.miataturbo.net/attachmen...ine=1340040874

https://www.miataturbo.net/attachmen...ine=1340040874

crashnscar 06-18-2012 01:39 PM


Originally Posted by Braineack (Post 891785)
I feel like fuel rails being at 3000psi is cause for concern.

It's not. Modern diesels run almost 10 times that much rail pressure (30k psi).

triple88a 06-18-2012 01:40 PM

Those are some interesting pistons.

hustler 06-18-2012 01:50 PM

I want one of those blue CX-5 diesel girl-SUVs so bad it's embarassing. Part of me wants that more than a truck and trailer.

curly 06-18-2012 01:51 PM


Originally Posted by triple88a (Post 891781)
My research shows 3k.

Curly my friend in a civic.. she stops her engine on every light.. pushes 39mpg city.

I do this at some longer lights, and the outrageously long wait at the local Starbucks drive-thru. My problem is I have an OEM battery from 2007, and you know those starter motors on 4 cylinders that sound like they could start a giant V12? Mine is not one of them.

This is a 2008 Lancer, I average 27-29 a tank, which is up around it's highway rating, so I'm happy. I do wish I had a system that turned it off for me though.

I've considered trading in for a CX-5, but ever since buying the Lancer I promised myself I wouldn't buy another brand new car. But my main concern is I'd walk out with a 235hp AWD ralliart instead of a fuel saver. Even with the skyavtiv, I'd only be saving $16 a month in gas over my current DD, and adding around $290 a month, if I wanted to pay it off at the same time.

I only wish I had waited a couple years to get a new DD. There's a lot of 35mpg+ vehicles available now.

triple88a 06-18-2012 01:53 PM

1 Attachment(s)
Personally i like the Honda CR Z

https://www.miataturbo.net/attachmen...ine=1340042014

Braineack 06-18-2012 01:55 PM

I'll stick with the c30.

hustler 06-18-2012 01:57 PM

I wish Mazda would battle against Audi at leMans.

Oscar 06-18-2012 01:59 PM

Mazda needs to bring something else than the MZR-R to the (A)LMS

Braineack 06-18-2012 02:00 PM

lol at mazda competing against a company that makes motors with more than 90bhp

triple88a 06-18-2012 02:14 PM

2 Attachment(s)
HHmm ever notice the car color thing on google?

Braineack 06-18-2012 02:17 PM

no, thats neat though.

hustler 06-18-2012 02:21 PM


Originally Posted by Oscar (Post 891808)
Mazda needs to bring something else than the MZR-R to the (A)LMS

They are running the 2.2 SkyACTIVE!!!oneone diesel in LMP-2 next year as an engine supplier, not a chassis.

I'd like to see Mazda convert America to Diesel, its clearly the way to go. I'd also like to see the RX-? get something better than rotary...like a diesel.

Braineack 06-18-2012 02:25 PM

you mean an ls7 right?


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