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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

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RE: Hmmm
By Brandon Hill on 1/6/2014 3:11:12 PM , Rating: 2
What's the point? Over 80% of the vehicles sold today in the U.S. are automatics (last time I checked; it could be higher). The most popular segments in the U.S. market (full-size pickups, midsize sedans, compact/midsize crossover) are dominated by automatic transmissions.

The only place you even find a decent number of manuals anymore are in sports/sporty cars (even then, many are being replaced by DCT), BMW sports sedans, base-model economy cars, and... uh... I guess that's about it.

You don't teach for a dying breed. If you want to learn how to drive a stick, find a friend/family member that has one.

RE: Hmmm
By Dr of crap on 1/6/2014 4:24:55 PM , Rating: 2
Exactly what I said and yet I get a nasty reply - ??

Can't get through to some I guess.

RE: Hmmm
By clarkn0va on 1/8/2014 1:41:56 PM , Rating: 2
One has to wonder how much MT sales would rise if new drivers were taught to drive a stick.

And I do not believe your stat that 80% of vehicles sold in the US are AT. This may be true for passenger vehicles, but certainly not all vehicles.

If xx% of car and light truck buyers want to pay for AT, that's their business, but I think the merits of teaching MT to new drivers are apparent.

- it gives the driver the ability to lend, borrow or rent a MT vehicle
- it helps the driver understand what gears are and how they work in a vehicle. This is useful knowledge, even to somebody who drives AT.
- it promotes reduced vehicle manufacturing and recycling costs
- it promotes reduced fuel consumption. This effect may be diminished as AT and CVT get more sophisticated, but then it's a tradeoff with the previous point, isn't it?

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