ASH8

Looks VERY Interesting....

http://blogs.insideline.com/straight...el-engine.html

http://www.autocar.co.uk/News/NewsAr...llCars/252467/

http://www.whatcar.com/car-news/mazd...engines/252461

ASH8

Seita Kanai, Mazda’s R&D supremo, says the new corporate platform and engines are legislatively future-proofed for a decade. These new four-cylinder engines will form the basis of Mazda’s global powertrain strategy and both feature highly unusual engineering solutions.

The new engines are called Sky ('because the sky's the limit', says the company's research and development chief, Seita Kanai) and will initially be available as a 165bhp 2.0-litre direct-injection petrol unit and a 175bhp 2.2-litre diesel.

Both will be available with the new six-speed manual or auto gearboxes. More powerful and smaller-capacity versions of the Sky family will follow. All will meet emissions regulations not due to come into force until 2014.

Mazda has targeted a CO2 figure of 105g/km for the manual diesel, with fuel economy 20% better than the equivalent 6 today, while the aim for the petrol unit is CO2 emissions of 140g/km and 15% fuel savings.

The petrol develops 144lb ft of torque all the way from 2000rpm to 5500, with a peak of 155lb ft. The diesel, meanwhile is unusual in that it revs to 5200rpm rather than the 4500rpm of most rivals, thanks to an increased spray of fuel delivered at higher pressure, and lighter moving parts. It has a maximum 310lb ft of torque from 2000rpm, although there's smooth acceleration from around 1500rpm.

We've tried all combinations of the new engines and gearboxes in prototypes disguised as current Mazda 6s, and they're impressive in their smoothness and consistent acceleration over a wide rev range. Mazda's claims that the petrol and diesel deliver their torque in a similar way are borne out: the biggest difference is that the diesel has double the torque of the petrol engine.

Both engines have a new space-consuming exhaust layout that disperses waste gases better than a conventional system, for greater efficiency. This, and the need to package the new rear suspension, was partly behind the need for the new platform, which is 20kg lighter than the platform of the current 6, despite being 30% stiffer.

The benefits of the increased stiffness will be improved crash protection and reduced transmission of road noise into the cabin.

The overall weight saving compared with today's 6 is 100kg. Mazda's iStop stop-start system, regenerative braking and new electronc power steering will also be fitted as standard.

SayNoToPistons

iTrader: (8)

Great news on Mazdas diesel. This can give VWs TDi some competition in the US market due tot he lack of diesel cars. We are currently looking into TDIs now, but I hope Mazda can bring some to the states as soon as possible.

MattMPS

interesting news....the new "multiform platform" is necessary for the new Mazda without Ford......

still wait for a 100% new car into dealerships

ASH8

It will be very interesting to see what Mazda does in the USA with the Mazda 6...

Will they continue with the model alongside Ford at Flat Rock??
Or will they revert back to an import 6??
What engine will they use, seeing for SKY the largest petrol engine is a 2.0 litre??

IMO Mazda will cease making the "larger" 6 in the USA and will come out of Hofu, Japan.
The US 6 just has not been the success it was supposed to be.

zoom44

They are going to add the Diesel Sky as the top motor for the 6 instead of the 3.7l

zoom44

reading up on the new 6speed auto


thats actually pretty darn quick. faster than the dualclutch they were working with is pretty impressive for an AT.

ASH8

I said what engine for the petrol or Gasoline US new Mazda 6, a 2.0l is too small..not diesel

ASH8

BTW, Notice how the so called "Fuel Improvements" have gone from 30% to 20% to an actual test comparison of 18% between old and new Sky 6 (mule)..

As far as I can see most of Mazda's fuel economy claims are because of a smaller capacity engines.

Look, I am NO Engineer, but, Capacity is Capacity a 1.8 made 20 years ago compared to a 1.8 made today still has the Same bore/stroke or stroke/bore capacity and the same CC of Piston going up and down and drawing in Air and Fuel.

Obviously the improvements over the years have been Fuel Delivery,Carby, FI and now DI, there must come a point where the fuel delivery can't be improved.

And Yes the less weight any engine moves will improve economy.

zoom44

18% in the current chassis- but the new platform is 100kg or more lighter. and was that with the new 6at? id have to look again to see if they said it was the new tranny in the mule

MattMPS

i still think there's room for super/turbocharged gasoline engines...(there are a lot of recent patents on it).....not in 2011 or 2012 maybe.....

also electro-assisted turbocharghed

kvndoom

Damn it Mazda! Every time I say I'll never buy one of your cars again, you go and do something like this! DAMN YOUUUUUUU.....

I can seriously see me in a diesel 3 hatch a few years from now. Hell yeah!

BTW, I read somewhere yesterday that Mazda's emissions tech will overcome the need for urea traps or whatever. So you get all the advantages of diesel, and don't have to worry about the **** bottle either. Sweetness!

ASH8

Yep, No **** Bottles with the New Sky-D Diesel engines

kvndoom

I strongly admire the fact that Mazda has the ***** to go forward with diesel even in this age where "hybrid" is the new gay. The other Japanese makes really let me down when they backed out. Right now many people who do understand the benefits of diesel are still afraid of VW's reputation. And VW is unable to sell a larger TDI without urea, which will be a really big plus for Mazda, because it lowers TCO.

I am also pumped about them trying to reduce road noise. Let's get some soft plastics in the interior too and kill them damn rattles!

arghx7

The targets are probably in brake specific fuel consumption, rather than actual liters per kilometer or miles per gallon. As measured in a research lab the new sky engines use less fuel at a specific power/torque output.

The Renesis has significantly lower bsfc compared to the older 13B-REW due to the exhaust ports etc. So in that way the Renesis met its efficiency targets. But the actual miles per gallon isn't much better because of all the other factors involved such as weight of the vehicle, gearing, etc.

MattMPS

new-gen diesel are not rattling no more....VW is "not so good" diesel engines....try a BMW (also a 4 cyl 2.0) and you'll see how a modern diesel work......

if Mazda L4is benchmarked on BMW L4 , there is absolutely NO PROBLEMS IMHO

kvndoom

Oh I meant interior rattles, heh. I actually love the sound (and smell) of a diesel idling.

ASH8

Quote:

Mazda Australia Boss says the Sky engines will initially be offered on only premium models before making it across the range by about 2014.

.....

MattMPS

what they mean for "premium models "?

here in EU Mazda is priced higher for the 2 (in it's segment of reference) than a 6 o cx-7 (always talking about their competitors)

ASH8

I take it as..like the new face-lift Mazda 3 next year will have SKY, but only in the Luxury or Premium or Deluxe or Special or Diesel, it could also mean ONLY for new MX-5, CX-7....??

But really it is Just a Slow roll-out, remember Mazda has limited capacity from a growing world market, ALL SKY engines will Only come out of Japan for now, so what about Mazda's Thailand, China Plants???, they will obviously target Countries where it is Law to have "whatever" emissions standards FIRST....