backtop


Print 76 comment(s) - last by clarkn0va.. on Jan 8 at 2:01 PM

Mazda is already discussing Skyactiv 3 as well

Mazda only recently started introducing its Skyactiv engines to its different vehicle models, but the automaker is already talking about the upcoming Skyactiv 2 -- and even Skyactiv 3 -- engines for the next decade and beyond. 
 
According to a new report from Automotive News, Mazda plans to gain 30 percent better fuel economy with its Skyactiv 2 engines, which are expected to have a 2020 release date. A 30 percent improvement in fuel economy would make the already impressive Mazda3 rise from 29/41 mpg (city/highway) in its more efficient trim to 38/53 on regular unleased gasoline.
 

2014 Mazda3

Mazda plans to achieve this 30 percent increase in fuel economy by improving the internal combustion of the Skyactiv 2 engines. More specifically, the Skyactiv 2 engine's compression ratio would be bumped up to 18:1 from a current level of 14:1. 
 
This higher compression is able to reach the same combustion temperature as the current engines, but with a leaner mix of fuel -- meaning improved fuel economy. 
 
The Skyactiv 2 engines will utilize homogeneous charge compression ignition (HCCI), which compresses the fuel-air mixture to a high enough pressure and temperature that it ignites by itself without needing a spark. This allows for more complete fuel combustion and lower nitrogen oxide emissions.
 
However, the Automotive News report indicates that HCCI won't come easy. Engineers must first expand the range of engine speeds for HCCI specifically, because the engine revving too quickly can result in a misfire due to the high number of revolutions, and if revved too slowly, it can misfire due to low temperatures.


2.0-liter Skyactiv four-cylinder engine
 
Aside from that, engine cooling and the engine's tendency to behave differently based on the use of different fuels need to be figured out.
 
The main goal with Skyactiv 2 is to meet European carbon dioxide emissions standards of 95 grams per kilometer in 2020, but Mazda is looking even further ahead at meeting Europe's standards of 65 grams per kilometer in 2025 with Skyactiv 3. 
 
Mazda didn't go into great detail about Skyactiv 3, but the automaker plans to make more energy available for powering the wheels by limiting the fluctuation of heat in the combustion chamber and reduce losses from exhaust and cooling. Mazda hopes to reach well-to-wheel carbon dioxide emissions with Skyactiv 3 that rival electric vehicles.
 
Mazda first introduced Skyactiv engines to the U.S. market in 2011, starting with the Mazda3 sedan. Since then, they've been added to the Mazda6 sedan and CX-5 crossover.
 
Mazda has been trying to bring the Skyactiv-D diesel engine to the U.S. via the Mazda6, and was supposed to have achieved this by the second half of 2013. However, in September of last year, it was announced that delays in emissions testing has pushed that timetable to late spring of 2014.

Source: Automotive News



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

RE: Hmmm
By Brandon Hill (blog) on 1/6/2014 1:27:28 PM , Rating: 2
Yeah, Mazda is bringing all kinds of WIN to the table these days. And they've turned it around quite fast as well. I used to have a 2006 Mazda 3s hatchback, and it was rated at just 29 mpg highway. The new one simply blows it away in fuel economy.

I would have bought the new 2014 model if it offered the cargo space that I needed with me now being a family man. But, it wasn't meant to be. Now if Mazda had brought this to the United States, I would have been first in line to purchase:

http://i.i.cbsi.com/cnwk.1d/i/tim/2012/09/05/20134...


RE: Hmmm
By Monkey's Uncle on 1/6/2014 3:05:27 PM , Rating: 2
There's the CX5...


RE: Hmmm
By Brandon Hill (blog) on 1/6/2014 5:18:36 PM , Rating: 3
I don't want a high-riding crossover. I hate them with a passion. I prefer wagons, not wagons on stilts :)

And a Mazda6 wagon would get better FE than the CX-5 anyway.


RE: Hmmm
By Spuke on 1/6/2014 7:07:50 PM , Rating: 2
HCCI!!!!! Nice piece of tech there if they can get it to work. I'm not a Mazda fan so I still won't buy their cars but great tech nonetheless.


RE: Hmmm
By menting on 1/7/2014 10:01:42 AM , Rating: 2
I got a 2003 Mazda 6, and recently got the 2014 Mazda 3 hatchback. Great car IMO, but wind noise is a bit excessive.
With cold temps recently, and having snow on the ground for about half the time I had this car, I have been averaging about 33mpg, not the greatest in the world, but still leaps and bounds more than my 2003 Mazda 6 (I get 25 combined MPG if I'm lucky)


RE: Hmmm
By ewhite06 on 1/7/2014 1:45:30 PM , Rating: 2
Oh hell yes. If that wagon ever made it to the US, I would be first in line to get one. That thing is dead sexy.


"Well, there may be a reason why they call them 'Mac' trucks! Windows machines will not be trucks." -- Microsoft CEO Steve Ballmer














botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki