Mazda SKYACTIV Technologies
10-21-2010, 08:25 AM
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Mazda SKYACTIV Technologies
I was debating posting this in one of the other threads discussing where Mazda is going, but it doesn't quite fit.
http://www.mazdausamedia.com/content...9-technologies
A few things from this that I want to comment on:
1: I am not very knowledgeable on diesel, but:
Gas:
vs
Diesel:
Seems odd? I knew diesel's used much higher compression than gasoline engines, but I didn't know that the emissions issues were in-part due to the high compression?
2: 8% lighter bodies and 14% lighter chassis. For the 8, that would be roughly a savings of 300 pounds? I don't know the individual weight of the chassis vs the body vs the interior vs the equipment vs the drivetrain, etc... but if I attribute about 1,000 pounds to the rest, 2,000 to the chassis/body, that is what it would be. So a base sport model 8 with those savings applied (I know, there won't be an 8 to apply these too), it would be around 2,500 to 2,600 pounds. GT would be about 2,700 pounds. Would bring the the power to weight ratio to about 1:13. It would feel as if we had a 20% bump in power to about 228whp. (using 2,900 as our current weight, again, base model, not GT) Estimates all around, since the actual weights from car to car varies of course. Certainly not a bad thing.
I will be interested to see what tech Mazda has used to get the engine improvements. I suspect they have gone off and 'done their own thing' again, being the rebels that they are
http://www.mazdausamedia.com/content...9-technologies
Press Release
- First product to be equipped with SKYACTIV technology will be a Mazda Demio featuring an improved, fuel-efficient, next-generation direct-injection engine that achieves fuel economy of 30 km/L -
Highlights of the SKYACTIV technologies:
* SKYACTIV-G: a next-generation highly-efficient direct-injection gasoline engine with the world's highest compression ratio of 14.0:1
* SKYACTIV-D: a next-generation clean diesel engine with the world's lowest compression ratio of 14.0:1
* SKYACTIV-Drive: a next-generation highly-efficient automatic transmission
* A next-generation manual transmission with a light shift feel, compact size and significantly reduced weight
* A next-generation lightweight, highly-rigid body with outstanding crash safety performance
* A next-generation high-performance lightweight chassis that balances precise handling with a comfortable ride
HIROSHIMA, Japan-Mazda Motor Corporation today announced the launch of its SKYACTIV next-generation technologies - including engines, transmissions, vehicle bodies and chassis - that will begin appearing in Mazda products from 2011. The Mazda Demio (known overseas as the Mazda2) will be the first model to feature SKYACTIV technology and will go on sale in Japan in the first half of 2011. It will be powered by the SKYACTIV-G, Mazda's next-generation direct injection gasoline engine that achieves significantly improved fuel efficiency thanks to a high compression ratio of 14.0:1[*]. The Mazda Demio SKYACTIV-G will achieve fuel economy of 30 kilometers per liter[†] without any assistance from an electric motor.
SKYACTIV is a blanket term for Mazda's innovative next-generation technologies that are being developed under the company's long-term vision for technology development, Sustainable Zoom-Zoom. The SKYACTIV name is intended to reflect Mazda's desire to provide driving pleasure as well as outstanding environmental and safety performance in its vehicles. To achieve this goal, Mazda has implemented an internal Building Block Strategy to be completed by 2015. This ambitious strategy involves the comprehensive optimization of Mazda's base technologies, which determine the core performance of its vehicles, and the progressive introduction of electric devices such as regenerative braking and a hybrid system. All the technologies that are developed based on the Building Block Strategy will fall under the SKYACTIV umbrella.
Takashi Yamanouchi, Mazda's Representative Director, Chairman of the Board, President and CEO, said, "Mazda is renewing its entire powertrain and platform lineup at the same time as revolutionizing every manufacturing process from R&D through to mass production. There have been no compromises in addressing conflicting goals. Instead, we have implemented a 'breakthrough' approach to technical innovation in all areas that has produced incredible, unexpected results. One of our success stories is the next-generation engine that will first appear in the Mazda Demio which goes on sale in the first half of 2011. Achieving an outstanding 30 kilometers per liter fuel economy, the SKYACTIV Demio will be a fun-to-drive fuel sipper that will satisfy anyone's desire for driving pleasure. And there will be many more exciting new products coming to the Mazda lineup in the years ahead."
Overview of the SKYACTIV technologies
1. SKYACTIV-G
A next-generation highly-efficient direct-injection gasoline engine that achieves the world's highest gasoline engine compression ratio of 14.0:1 with no abnormal combustion (knocking)
- The world's first gasoline engine for mass production vehicles to achieve a high compression ratio of 14.0:1
- Significantly improved engine efficiency thanks to the high compression combustion, resulting in 15 percent increases in fuel efficiency and torque
- Improved everyday driving thanks to increased torque at low- to mid-engine speeds
- A 4-2-1 exhaust system, cavity pistons, multihole injectors and other innovations enable the high compression ratio
2. SKYACTIV-D
A next-generation clean diesel engine that will meet global emissions regulations without expensive NOx aftertreatments - urea selective catalytic reduction (SCR) or a Lean NOx Trap (LNT) - thanks to the world's lowest diesel engine compression ratio of 14.0:1
- 20 percent better fuel efficiency thanks to the low compression
ratio of 14.0:1
- A new two-stage turbocharger realizes smooth and linear response from low to high engine speeds, and greatly increases low- and high-end torque (up to the 5,200 rpm rev limit)
- Complies with global emissions regulations (Euro6 in Europe, Tier2Bin5 in North America, and the Post New Long-Term Regulations in Japan), without expensive NOx aftertreatment
3. SKYACTIV-Drive
A next-generation highly efficient automatic transmission that achieves excellent torque transfer efficiency through a wider lock-up range and features the best attributes of all transmission types
- Combines all the advantages of conventional automatic transmissions, continuously variable transmissions, and dual clutch transmissions
- A dramatically widened lock-up range improves torque transfer efficiency and realizes a direct driving feel that is equivalent to a manual transmission
- A 4-to-7 percent improvement in fuel economy compared to the current transmission
4. SKYACTIV-MT
A light and compact next-generation manual transmission with crisp and light shift feel like that of a sports car, optimized for a front-engined front-wheel-drive layout
- Short stroke and light shift feel
- Significantly reduced size and weight due to a revised structure
- More efficient vehicle packaging thanks to its compact size
- Improved fuel economy due to reduced internal friction
5. SKYACTIV-Body
A next-generation lightweight, highly-rigid body with outstanding crash safety performance and high rigidity for greater driving pleasure
- High rigidity and lightness (8 percent lighter, 30 percent more rigid)
- Outstanding crash safety performance and lightness
- A "straight structure" in which each part of the frame is configured to be as straight as possible. Additionally, a "continuous framework" approach was adopted in which each section functions in a coordinated manner with the other connecting sections
- Reduced weight through optimized bonding methods and expanded use of high-tensile steel
6. SKYACTIV-Chassis
A next-generation high-performance lightweight chassis that balances precise handling with a comfortable ride feel to realize driving pleasure
- Newly developed front strut and rear multilink suspension ensures high rigidity and lightness (The entire chassis is 14 percent lighter than the previous version.)
- Mid-speed agility and high-speed stability - enhanced ride quality at all speeds achieved through a revision of the functional allocation of all the suspension and steering components
# # #
[*] Compression ratio and some engine technologies vary depending on fuel type and vehicle specifications
[†] Measured according to Japan's 10-15 mode test cycle
- First product to be equipped with SKYACTIV technology will be a Mazda Demio featuring an improved, fuel-efficient, next-generation direct-injection engine that achieves fuel economy of 30 km/L -
Highlights of the SKYACTIV technologies:
* SKYACTIV-G: a next-generation highly-efficient direct-injection gasoline engine with the world's highest compression ratio of 14.0:1
* SKYACTIV-D: a next-generation clean diesel engine with the world's lowest compression ratio of 14.0:1
* SKYACTIV-Drive: a next-generation highly-efficient automatic transmission
* A next-generation manual transmission with a light shift feel, compact size and significantly reduced weight
* A next-generation lightweight, highly-rigid body with outstanding crash safety performance
* A next-generation high-performance lightweight chassis that balances precise handling with a comfortable ride
HIROSHIMA, Japan-Mazda Motor Corporation today announced the launch of its SKYACTIV next-generation technologies - including engines, transmissions, vehicle bodies and chassis - that will begin appearing in Mazda products from 2011. The Mazda Demio (known overseas as the Mazda2) will be the first model to feature SKYACTIV technology and will go on sale in Japan in the first half of 2011. It will be powered by the SKYACTIV-G, Mazda's next-generation direct injection gasoline engine that achieves significantly improved fuel efficiency thanks to a high compression ratio of 14.0:1[*]. The Mazda Demio SKYACTIV-G will achieve fuel economy of 30 kilometers per liter[†] without any assistance from an electric motor.
SKYACTIV is a blanket term for Mazda's innovative next-generation technologies that are being developed under the company's long-term vision for technology development, Sustainable Zoom-Zoom. The SKYACTIV name is intended to reflect Mazda's desire to provide driving pleasure as well as outstanding environmental and safety performance in its vehicles. To achieve this goal, Mazda has implemented an internal Building Block Strategy to be completed by 2015. This ambitious strategy involves the comprehensive optimization of Mazda's base technologies, which determine the core performance of its vehicles, and the progressive introduction of electric devices such as regenerative braking and a hybrid system. All the technologies that are developed based on the Building Block Strategy will fall under the SKYACTIV umbrella.
Takashi Yamanouchi, Mazda's Representative Director, Chairman of the Board, President and CEO, said, "Mazda is renewing its entire powertrain and platform lineup at the same time as revolutionizing every manufacturing process from R&D through to mass production. There have been no compromises in addressing conflicting goals. Instead, we have implemented a 'breakthrough' approach to technical innovation in all areas that has produced incredible, unexpected results. One of our success stories is the next-generation engine that will first appear in the Mazda Demio which goes on sale in the first half of 2011. Achieving an outstanding 30 kilometers per liter fuel economy, the SKYACTIV Demio will be a fun-to-drive fuel sipper that will satisfy anyone's desire for driving pleasure. And there will be many more exciting new products coming to the Mazda lineup in the years ahead."
Overview of the SKYACTIV technologies
1. SKYACTIV-G
A next-generation highly-efficient direct-injection gasoline engine that achieves the world's highest gasoline engine compression ratio of 14.0:1 with no abnormal combustion (knocking)
- The world's first gasoline engine for mass production vehicles to achieve a high compression ratio of 14.0:1
- Significantly improved engine efficiency thanks to the high compression combustion, resulting in 15 percent increases in fuel efficiency and torque
- Improved everyday driving thanks to increased torque at low- to mid-engine speeds
- A 4-2-1 exhaust system, cavity pistons, multihole injectors and other innovations enable the high compression ratio
2. SKYACTIV-D
A next-generation clean diesel engine that will meet global emissions regulations without expensive NOx aftertreatments - urea selective catalytic reduction (SCR) or a Lean NOx Trap (LNT) - thanks to the world's lowest diesel engine compression ratio of 14.0:1
- 20 percent better fuel efficiency thanks to the low compression
ratio of 14.0:1
- A new two-stage turbocharger realizes smooth and linear response from low to high engine speeds, and greatly increases low- and high-end torque (up to the 5,200 rpm rev limit)
- Complies with global emissions regulations (Euro6 in Europe, Tier2Bin5 in North America, and the Post New Long-Term Regulations in Japan), without expensive NOx aftertreatment
3. SKYACTIV-Drive
A next-generation highly efficient automatic transmission that achieves excellent torque transfer efficiency through a wider lock-up range and features the best attributes of all transmission types
- Combines all the advantages of conventional automatic transmissions, continuously variable transmissions, and dual clutch transmissions
- A dramatically widened lock-up range improves torque transfer efficiency and realizes a direct driving feel that is equivalent to a manual transmission
- A 4-to-7 percent improvement in fuel economy compared to the current transmission
4. SKYACTIV-MT
A light and compact next-generation manual transmission with crisp and light shift feel like that of a sports car, optimized for a front-engined front-wheel-drive layout
- Short stroke and light shift feel
- Significantly reduced size and weight due to a revised structure
- More efficient vehicle packaging thanks to its compact size
- Improved fuel economy due to reduced internal friction
5. SKYACTIV-Body
A next-generation lightweight, highly-rigid body with outstanding crash safety performance and high rigidity for greater driving pleasure
- High rigidity and lightness (8 percent lighter, 30 percent more rigid)
- Outstanding crash safety performance and lightness
- A "straight structure" in which each part of the frame is configured to be as straight as possible. Additionally, a "continuous framework" approach was adopted in which each section functions in a coordinated manner with the other connecting sections
- Reduced weight through optimized bonding methods and expanded use of high-tensile steel
6. SKYACTIV-Chassis
A next-generation high-performance lightweight chassis that balances precise handling with a comfortable ride feel to realize driving pleasure
- Newly developed front strut and rear multilink suspension ensures high rigidity and lightness (The entire chassis is 14 percent lighter than the previous version.)
- Mid-speed agility and high-speed stability - enhanced ride quality at all speeds achieved through a revision of the functional allocation of all the suspension and steering components
# # #
[*] Compression ratio and some engine technologies vary depending on fuel type and vehicle specifications
[†] Measured according to Japan's 10-15 mode test cycle
A few things from this that I want to comment on:
1: I am not very knowledgeable on diesel, but:
Gas:
- Significantly improved engine efficiency thanks to the high compression combustion, resulting in 15 percent increases in fuel efficiency and torque
Diesel:
- 20 percent better fuel efficiency thanks to the low compression
2: 8% lighter bodies and 14% lighter chassis. For the 8, that would be roughly a savings of 300 pounds? I don't know the individual weight of the chassis vs the body vs the interior vs the equipment vs the drivetrain, etc... but if I attribute about 1,000 pounds to the rest, 2,000 to the chassis/body, that is what it would be. So a base sport model 8 with those savings applied (I know, there won't be an 8 to apply these too), it would be around 2,500 to 2,600 pounds. GT would be about 2,700 pounds. Would bring the the power to weight ratio to about 1:13. It would feel as if we had a 20% bump in power to about 228whp. (using 2,900 as our current weight, again, base model, not GT) Estimates all around, since the actual weights from car to car varies of course. Certainly not a bad thing.
I will be interested to see what tech Mazda has used to get the engine improvements. I suspect they have gone off and 'done their own thing' again, being the rebels that they are
12-07-2010, 01:15 PM
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Apparently, its so efficent because of the intake and exhaust design, the high compression + direct inject, and electronic valves.
This plus weight reduction will keep a lot of their cars at about the same power to weight ratio.
http://www.caranddriver.com/news/car...gines-car_news
Last edited by SlickRick51586; 12-07-2010 at 02:04 PM.
12-07-2010, 06:39 PM
#4
Lighter body means they are like tin cans when you close the door.
Plus you can lean against them or bounce a tennis ball against them to create a dent.
Thin body means interior cabin noise will increase.
You would have to use dynamat to over come this. Thus tou would add more weight than you lost.
It's pretty hard to make a thiner body that is more rigid.
But maybe they have done it.
Plus you can lean against them or bounce a tennis ball against them to create a dent.
Thin body means interior cabin noise will increase.
You would have to use dynamat to over come this. Thus tou would add more weight than you lost.
It's pretty hard to make a thiner body that is more rigid.
But maybe they have done it.
12-08-2010, 05:48 AM
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I find it mildly humorous that this thread is finally getting replies a month and a half after I posted it. And it only floated back to the top because of a spammer posting in it (twice actually)
12-08-2010, 11:57 AM
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about 163 hp and 155 ft lb torque on premium gas.
http://www.caranddriver.com/news/car...gines-car_news
http://www.caranddriver.com/news/car...gines-car_news
The article says it's a 2.0L engine.
12-08-2010, 02:33 PM
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I was thinking about starting a new post about it, since the sky interests me. I figured it would be better to just reply here instead of having two threads.
Unfortunately, the discussion has digressed to carbon fiber and cabin noise.
Most auto manufactuors do some sort of noise/acceptance testing. They're not going to release the car if it sounds like a tin can. If they do release a car that sounds like a tin can, then it was probably worse to begin with, lol.
I'm curious as to how long these engines will last with 14:1 compression (world motor) and 13:1 US motor, and electronic valves.
They said something about the exhaust manifold being part of long block in one of the articles I read. (hope no one cracks an exhaust manifold, you'll need new heads)
It does meet future emissions requirements, makes good mpg, and power for its efficency.
The Demio w/ sky gets 30 km/l which is aprox 70 mpg, holy crap.....
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