Mazda to Debut Next-Generation Direct Injection Gasoline and Diesel Engines, Transmission and Kiyora Concept at Tokyo Motor Show 2009
29 September 2009
The Kiyora Concept uses a 1.3-liter version of the new SKY-G gasoline direct injection engine and achieves fuel economy of 75 mpg US on the Japanese 10-15 cycle. Click to enlarge. |
Mazda Motor Corporation will showcase the world premiere of its next-generation engine lineup and automatic transmissions at the 41st Tokyo Motor Show, to be held from Saturday, 24 October through 4 November. Mazda will exhibit the Mazda SKY-G direct injection gasoline engine, the Mazda SKY-D advanced diesel engine and the Mazda SKY Drive high-efficiency automatic transmission.
The Tokyo Motor Show, to be held at Makuhari Messe in Chiba Prefecture, will also mark the Japan debut of the Kiyora concept car as an exhibit of Mazda’s next-generation environmental and safety technologies. Featuring the next-generation Mazda SKY concept powertrain technologies and comprehensive advancements in weight reduction, the Kiyora achieves fuel economy of 32 kilometers per liter under Japan’s 10-15 mode test cycle (3.13 L/100km or 75 mpg US).
The 2.0-liter SKY-G engine. Click to enlarge. |
Direct-injection Mazda SKY-G gasoline engine. Mazda SKY-G is a next-generation direct injection gasoline engine with significantly improved fuel economy and output performance due to enhanced thermal efficiency.
The engine block is newly designed to reduce mechanical friction and achieve an optimal air-fuel mix, and a direct fuel injection system is employed due to the wide variety of spray profiles that are possible, enabling the maximum expansion ratio to be achieved.
Specifically, fuel economy and torque are improved by approximately 15% compared to Mazda’s current 2.0-liter engine. This was achieved by adopting next-generation fuel injectors and a highly functional variable valve timing mechanism. The engine enables fuel economy equivalent to the current Mazda Demio (known as the Mazda2 overseas) to be achieved in a vehicle the size of a Mazda Axela (Mazda3).
The 2.2-liter SKY-D engine. Click to enlarge. |
Advanced diesel Mazda SKY-D engine. Mazda’s new SKY-D clean diesel engine offers high fuel economy and output performance as well as low exhaust emissions. The newly designed engine block reduces mechanical friction to the level of a gasoline engine.
By optimizing the pressure and temperature in the cylinders, the shape of combustion chambers, and the fuel injection rate, combustion begins at the best timing in terms of thermal efficiency. Specifically, by employing piezo injectors, a two-stage turbocharger and other technologies, fuel economy becomes approximately 20% better than the current 2.2-liter diesel engine. Mazda has achieved fuel economy equivalent to the current Mazda Demio (known overseas as the Mazda2) in a vehicle the size of a Mazda Atenza (Mazda6).
Next-generation Mazda SKY-Drive automatic transmission. Mazda’s next-generation SKY-Drive automatic transmission is highly efficient, contributing to substantially improved fuel economy and a more direct feel compared with the current unit. It improves fuel economy by approximately 5%, due to a complete redesign that significantly reduces mechanical friction, a revised torque converter and clutch with minimized slip, and an optimized lock-up mechanism. A rapid clutch action was achieved by identifying the minimum amount of fluid necessary. This also helped to realize a direct feel similar to a dual clutch transmission.
Kiyora. The Mazda Kiyora combines the SKY-G 1.3 engine and lightweight six-speed Mazda SKY-Drive automatic transmission. The Kiyora achieves its 32 km/L fuel economy aided by Mazda’s i-stop idling stop system (earlier post), regenerative braking, and advanced aerodynamics around a compact body that is 100 kilograms lighter than Mazda’s current mass production model in the same segment.
Cool.
The SKY-G and SKY-D sound a bit on the complex, expensive side, but this is only a press release - so maybe not,
I was sorry to see the RX-7 price itself out of the market back in the early 2000s.
Maybe it will come back, now - as the Sky-Hi.
Posted by: ToppaTom | 29 September 2009 at 03:30 AM
It is amazing what can be done with ICE vehicle efficiency when pressured by BEV's arrival. Too bad that EU (and Japan) with high fuel retail price, did not do that 10 or 20 years ago, instead of going to diesel.
It is possible, that improved ICE small vehicles, will eventually achieve 100 mpg with CO2 emission much below 100g/Km by 2020+?
Small PHEVs with higher efficiency, very small, one or two cyls ICE genset, should be able to do twice as well, i.e. 200 mpg and CO2 emission of less than 50g/Km.
BEVs will may have more competition than expected and may have to be improved considerably to gain an important market share.
Wonder if the rise of e-books and e-cars sales will follow a close relationship. They both have less than 1% of their respective market today, but e-books sales (content) expect to double every year for the next 8-10 years.
Posted by: HarveyD | 29 September 2009 at 08:09 AM
@harvey,
You are right to marvel at how efficient ICEs seem to be getting, once a little pressure was applied.
Some of the effect may be due to faster low cost processors which allow very tight control over the engine due to Moore's "law". ("observation", really).
On the subject of e-books and e-cars, e-books are subject to Moore's law, being mainly digital devices, while e-cars are electrical devices and are not subject to Moore's law.
(Much the way PV cells aren't).
On the subject of PHEV's, the trick will be to get ones introduced with rather small batteries, and "smart" usage policies to make the most of say 10 mile electrical range.
Posted by: mahonj | 29 September 2009 at 09:16 AM
Yes, a small city PHEV-10 (miles,) with a very small (quiet) one or two cyls genset should be easy and cheap enough to produce, with current technology. A basic first generation small PHEV-10 could be built in many countries for well under $20K.
As e-storage technology matures, the car, battery pack, e-ancillaries and genset size could be increased for highway type PHEVs (a second generation $30K Chevy Volt?)
Many developing countries would be more than happy to use basic, small, very low cost, 100 mpg PHEV-10 to increase mobility and reduce rare liquid fuel consumption.
Posted by: HarveyD | 29 September 2009 at 09:43 AM
It is too bad the auto industry did not go the path of direct injection, overhead cams and turbochargers back when Henry Ford set us on this wasteful path of push rods and carburetors.
Posted by: ToppaTom | 29 September 2009 at 06:38 PM
Harvey
Why don't skip the PHEV-10 and just use your bike instead ? really it is just turning ridiculous at this point, why not PHEV-2 or even PHEV-1 ? just to say that we have PHEV on the road, hmm ? this logic is just flawed well beyong the point of total diminushing returns. Technology is not a goal in itself and is not a good solution if :
1- it serves no purpose
2- it is anti-economical
3- we can do otherwise without it
Posted by: Treehugger | 29 September 2009 at 11:13 PM
HarveyD
I found a link that you shoul read while waiting for the perfect that we can use even for driving to the next block. If tomorrow cars are cleaner and use cheap electricity instead of expensive oil then we will be able to drive them even more so we will be, human race, definitively a world of obeses once for all, so thanks but no thanks
http://www.businessinsider.com/cars-make-people-fatties-2009-9
Posted by: Treehugger | 29 September 2009 at 11:21 PM
Yes, body weight & size of car fleet seem to have a common denominator. USA is ahead on both.
Body weight and number of junk food places also have a common denominator. USA is also ahead on both.
Body weight and the consumption of sweet soft drinks also have a common denominator. USA is ahead on both.
Body weight and the number of video games (with chips and sweets) also have a common denominator. USA is ahead on both.
Wonder which one has the most desastrous effects.
Electrification of transport vehicles may not change the existing acquired bad habits.
Making cars smaller may send a valuable message!!!
Posted by: HarveyD | 30 September 2009 at 02:01 PM