Here is some more information on Mazda new Fuel Efficient Engine Range starting to appear in 2011 vehicles.

The information is from Automotive News, I can't post a link as you need User Log On information to view, so I copied the report.

Most of us already know of this news, but there is always room for more!


Mark Rechtin
Automotive News
August 20, 2009 - 1:06 pm ET

MONTEREY, Calif. -- Mazda will introduce a more fuel-efficient powertrain by 2011, kick-starting its pledge to increase fuel economy across its model line 30 percent by 2015.

Mazda is developing a range of four-cylinder and rotary engines that are expected to result in higher fuel economy ratings. For example, Seita Kanai, head of Mazda Motor Corp.'s r&d effort, said a redesign of Mazda's best-selling 2.0-liter four-cylinder engine with a new six-speed automatic transmission will see city fuel economy increase to 32 mpg from 22. Highway fuel economy would increase to 42 mpg from 32.

"We want to provide this technology to all owners, not just through a few eco-friendly vehicles," Kanai said in a media briefing here.

Mazda did not say which engine or vehicle would be the first to market with the increased efficiency. But Robert Davis, senior vice president of Mazda North American Operations r&d, said the new powertrains cannot be retrofitted to an existing product line.

Given Mazda's product cadence, the redesigned MX-5 convertible or Mazda5 small minivan likely would get the new engines first. The entire model lineup will be equipped with the new engines by 2015, Kanai said.

The 30 percent improvement in fleet fuel economy does not include improvements from idle-stop, regenerative braking or hybrid powertrain development, he said. And although hybrids are a part of Mazda's future, such technology is minor compared to the company's concentration on improving internal combustion engines.

Mazda also is concentrating its r&d resources on rotary engines. The next-generation 1.6-liter rotary is expected to have a "greater than 30 percent" fuel economy improvement while saving weight.

Mazda's green gains...
How Mazda plans to increase fuel economy across its model line
• Improved gasoline engine combustion
• Improved diesel emissions
• More efficient transmissions
• Idle-stop and regenerative brakes

Mazda will not seek in-house improvements in V-6 engines, which are supplied by Ford Motor Co. Those powerplants represent such a small percentage of total Mazda volume that the automaker would prefer to continue sourcing the V-6s from Ford rather than wring improvements from the engines in-house, Kanai said.

In four-cylinder and rotary engines, Mazda said new gasoline direct-injection technology, combined with a high-pressure fuel pump and variable intake and exhaust valve timing, will bring combustion closer to an ideal level in a wider rev range.

Another part of the powertrain efficiency gains come from improved automatic transmissions that are smaller and lighter, yet have more gear ratios and can handle more torque, said Akiro Iwamoto, Mazda staff manager of powertrain technology development.

Mazda also is studying bringing its next-generation diesel engines to the United States. Currently, none of Mazda's diesels are mated to automatic transmissions, a feature generally regarded as necessary in the United States. Mazda also sees significant marketing hurdles in selling diesels to U.S. customers.

Mazda is still studying bringing its idle-stop technology to the United States, Davis said. But the automaker is having a difficult time marketing the fuel-efficiency benefit, mainly because EPA testing does not take idle-stop's efficiencies into account.

 

30% better fuel economy for most rx8 owners would be somewhere around 23 mpg.

most sedans are going to get close to double that.

 

where do I sign up for this 30% better mpg rotary?

 

"In four-cylinder and rotary engines, Mazda said new gasoline direct-injection technology, combined with a high-pressure fuel pump and variable intake and exhaust valve timing, will bring combustion closer to an ideal level in a wider rev range."


The direct injection and high pressure fuel pump sound good, but "valve timing"?

 

http://www.leftlanenews.com/mazda-re...-for-2011.html

http://blogs.thecarconnection.com/ma...coming-in-2011

http://www.egmcartech.com/2009/08/20...gines-by-2011/

 

Huge improvements they're talking about here...
________
Vaporizer extreme q review

 

Frankly, this is My Opinion, but I can not see how Mazda will achieve a 30% improvement in MPG on their new 1.6 litre Rotary...

You get a larger chamber with 30% less fuel usage.????

I think it could be achieved with first lowering the RPM limit to say 7800 RPM, then the introduction of their First Direct Injection Rotary which has to "Improve" MPG.
Aluminum Side Housings will help, along with a Much Lighter Car Body, which still has to be strong.

And then perhaps to introduce another fuel source, Hydrogen? or Electricity (Batteries)?

I just can't see DI alone achieving a 30% MPG Improvement.

 

ash - the change in the shape of the combustion chamber plays A HUGE PART IN THE ADDED FUEL EFFICIENCY--- sorry caps------my understanding is almost equal percentage the DI.

 

so if this comes out and we bust are engines do we get this one? since mazda extended their warranty?

 

Yeah....no

 

Owww.. 1.6, now thats more like it!

 

Not really "news" but, still interesting.

"new auto transmissions" are rumored dual-clutch.

The famous "2.0 litre engine diesel" is scheduled for USA, right.... here in EU with current 2.2 there 's no need for a 100% new engine (in short times). lack of auto stick it's a problem instead.....

Cx-7 diesel without autostick il less interesting for typical potential customer cluster.....

 

Cant wait for this 1.6L they speak of

 

Since Mazda's marketing is always 'linguistically creative' (If not downright deceptive), I wonder if they mean 30% more efficient per displacement. I like when they aren't specific.

Paul.

 

haha...well, considering MPG tests go nowhere near those high revs anyway, then why would lowering the redline help? If anything, lowering the redline would then have to require taller gear ratios, thus giving the car less leverage, and suck up more fuel for a given desired acceleration rate.

 

Interesting. Better fuel rating while saving weight. This I can't wait to see.

 

Screw fuel economy, I want a rotary that will last at least 100k without issues.

 

No matter what kind of MPG improvement the new rotary might offer, Im sure compared to other sports cars, it will still lag miserably behind. Im mainly talking about highway MPG. I do mostly highway driving to work and back and I average around 20. That is pathetic. Something in the upper 20's range is what needs to happen. City will naturally be horrible but I dont think thats as much of an issue.

 

yeah thats what im talking about!!

 

Very excite *borat accent*

 

actually sorry to hear that but its not the car- its you. On every tank of highway mileage I have always returned 23 or better mpg unless I was flogging it. Hell Nemesis8 and I got 20 going thru Cali at better than 100mph.

If you only get 20 on normal highway cruising than you are driving in 4th or 5th or always have the pedal floored. Either that or its a "highway" trip in location only and what you are really doing is City driving on a highway. there is a big difference.

The car is quite capable of producing better than 24 mpg at 65 in 6th gear

 

Meh, not that I really give a crap about fuel economy because I knew it was crappy when I bought her but I drove 35 miles each way all at 70-80mph for 3 years in my 8 and I never got better than 22MPG and that was on two motors. And I'm a cruise control freak.

The biggest annoyance for me in the 8 was the variation in fuel economy. Some weeks I would get as low as 18mpg with no change in environment or driving conditions. I always used the Shell station next to my home and I always ran to empty (still do) and then calculated based on gallons added and the mileage I drove (I used to write off my mileage as a business expense).

Now I live 5 miles from work so I could care less.

 

That is some huge improvements on their 4 cylinder engines. I used to have a 2.3l mazda 3s, and it had pretty shitty gas mileage so it's good to see an improvement.

For the rotary I could care less about fuel economy. More reliable, lighter, powerful is all I care about.
The best I ever got was 21mpg at 73mph from Santa Barbara to San Jose in California on 101. Got 20, going the other way on the coastline highway 1 (sure a great drive) and I wasn't trying to save gas.. *shrug*. Now I get 11 to 14mpg and I am sure every prius driver must be like this guy is wasting so much gas.. but I am having too much fun and always get to work with a big smile in my face no matter how moody I might have been in the morning.

 

Best I've seen my '04 MT do is 23mpg, and that was at 75mph along the Ohio Turnpike on cruise control. Hell, I was ecstatic at seeing that number, since the beastie usually turned the high teens no matter what I did.

Zoom, you must have the luck o' the Irish with coils to keep mileage like that.

 

Fixed.