Mazda compression ignition engine breakthrough

Or they could spend that energy to make electromobility affordable on a large scale.
 
mypetcow said:
Or they could spend that energy to make electromobility affordable on a large scale.
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If countries like South-Africa worked on the infrastructure.
But sadly developing countries (Even previously developed) Like SA is nowhere near that so any alternative more efficient engineering would work
 
Plus these engines can be used in conjunction with electric motors for even greater hybrid efficiency until full electric becomes the norm.

I would be interested to see power and torque curves for these motors. They might even render diesel engines obsolete.
 
Nothing new really, the current F1 V6's have achieved this kind of efficiency since 2015, rumor is they way over 40% thermal efficiency which is just mind blowing.
 
eddief1 said:
Nothing new really, the current F1 V6's have achieved this kind of efficiency since 2015, rumor is they way over 40% thermal efficiency which is just mind blowing.
Click to expand...

That is with their energy recovery systems though...
 
Mazda Skyactiv-X engine range to gain plug-in hybrid variant from 2021

Car maker set to produce world’s first compression ignition petrol engine, claiming 'well-to-wheel' emissions that beat electric vehicles

Mazda pledged that its next generation of petrol-engine vehicles will be cleaner than electric cars due to the use of efficiency-boosting compression ignition technology - and it'll boost that promise in 2021 when a plug-in hybrid drivetrain is added.

The PHEV system will be the last of the planned drivetrains to be added to the range. The first to arrive will be the new Skyactiv-X family, which will replace the current Skyactiv-G range in 2019. These engines use compression ignition technology that has previously only been used in diesel engines. Mazda claims the results improve efficiency by up to 30% over its current petrol units, matching or even improving on the brand’s Skyactiv-D diesel engine range.

Alongside the launch of these groundbreaking petrol units, the Japanese brand will add mild hybrid and full electric drivetrains to its line-up in 2019. The latter will be available in pure battery EV form or with a range extender, and will share technology with Toyota - which Mazda has teamed up with for research and development. The next Mazda 3 will also arrive in 2019, suggesting it could be an early benefitter of the new powertrains.

Interestingly, despite the zero tailpipe emissions of electric vehicles, Mazda claims that its Skyactiv-X engines will actually be the cleanest power sources in its range. Mazda said they'll produce lower carbon dioxide emissions than electric powertrains from a 'well-to-wheel' perspective - which accounts for the whole life cycle of a vehicle and the fuel needed to power it. The company has been developing the new engine technology for several years, as first reported by Autocar in 2014.

Compression ignition technology has not yet been used on a mass production scale in petrol engines. The system, labelled Spark Controlled Compression Ignition, mixes petrol and air together in the engine’s cylinder like a regular spark ignition engine, but then ignites it using compression at lower load or with a spark at higher loads. This means around half the volume of petrol is required for the same combustion level across most of the rev range.

Mazda director Kiyoshi Fujiwara, who has oversight of the firm's R&D programme, explained that this “very lean air-fuel mixture that is too lean to combust by spark ignition [alone] can combust by this method cleanly and rapidly”. He added that this enables "better thermal efficiency, improved fuel economy and lower nitrogen oxide emissions". Other benefits include higher efficiency across a wider range of revs, thus improving engine responses and performance.

The company has pursued this technology because it believes spark ignition technology is reaching its peak. Mazda also argues that while electric technology produces no emissions from a car's tailpipe, it is yet to represent a truly sustainable option on a global scale because much of the world’s electricity grids are still powered by fossil fuels.

As part of its Sustainable Zoom-Zoom 2030 plan, Mazda has pledged to reduce corporate average well-to-wheel CO2 emissions to 50% of 2010 levels by 2030, before reducing them by 90% by 2050.

The company will begin introducing electric technology into its range from 2019, but has stated that it will focus sales of these models in regions where sustainable energy is produced. It will continue to invest heavily in petrol technology beyond this point, citing a continued growth of combustion engine demand in other regions, such as developing economies.

https://www.autocar.co.uk/car-news/...-x-engine-range-gain-plug-hybrid-variant-2021
 
Hyundai had a running prototype of this in 2013. called a GDCI (Gasoline Direct Compression Ignition)engine. they predicted to have it standard on cars by 2023. They had a test mule and were planning years of testing.

I think in the same period and I am under correction here but merc was working on a engine that could run on either petrol or diesel.
 
Mazda eyeing twin-turbo with electric supercharger

Mazda is working on a triple-charged engine...

Mazda is no stranger to doing things its own way. Indeed, the Japanese automaker recently announced that it plans to put into production a petrol engine using compression ignition.

And now a new patent application in the United States suggests the brand is also working on an engine employing two conventional turbochargers as well as an electric supercharger.

The abstract from the filing reads as follows:

“A supercharging device for an engine includes an electric supercharger which supercharges intake air; an intercooler which cools intake air discharged from the electric supercharger; and an intake manifold which is disposed substantially horizontally, and is configured to communicate between a downstream end of the intercooler in an intake air flow direction, and intake ports.

“The downstream end of the intercooler is located on a lower end of the intercooler. The downstream end of the intercooler is disposed substantially at the same height as an upstream end of the intake ports. The electric supercharger is disposed below the intercooler along a surface of the engine on an intake side where the intake ports are opened.”

In theory, the electric supercharger comes on song low in the rev range, while the turbochargers add oomph as the revs climb. So, similar to the way the electric compressor and turbochargers in the oil-burning Audi SQ7 and Bentley Bentayga Diesel work, then.

Unearthed by the folks over at Motor Trend, the new longitudinally mounted engine is apparently being developed for a rear-wheel-drive vehicle. And that has, naturally, led to renewed speculation that an RX-8 successor is on the cards…

As the US publication points out, however, this is merely a patent application, so the technology may never even make it to production.

http://www.carmag.co.za/news_post/mazda-eyeing-twin-turbo-with-electric-supercharger/As
 
Mazda 3 Skyactiv-X 2019 prototype review: new compression ignition petrol engine driven

Mazda’s new compression ignition engine, due in 2019, combines petrol and diesel tech. We’ve tried out an early sample in a prototype Mazda 3

Mazda’s new Skyactiv-X engine is set to be the first compression ignition petrol unit to be put into mass production.

It is due to be launched in 2019, in conjunction with a new vehicle platform that the Japanese manufacturer says will underpin its future models.

According to Mazda, the Skyactiv-X engine, which uses Spark Controlled Compression Ignition (SCCI), will combine the economy and torque of a diesel engine with the performance and lower emissions of a petrol unit. Our test of an early development engine certainly hinted at a unit combining diesel and petrol characteristics

Our test involved driving development cars with both manual and automatic drivetrains and development cars featuring the 2.0-litre Skyactiv-X engine. The cars were based on Mazda’s new platform, and housed in a current Mazda 3 shell. The engines we tried were fresh from Japan and performance data wasn’t available – Mazda engineers said it hadn’t been properly dyno-tested yet – with speed limited to 100mph.

Mazda has yet to confirm which models will be the first to be launched with the new engine and platform, although as one of Mazda’s key models in both the USA and Europe, the 3 family hatchback would be a natural choice.

The test route was based around Mazda’s European technical centre in Oberursel, near Frankfurt in Germany. It encompassed country roads and city streets, along with a short stretch of autobahn – enough to get a good impression of the Skyactiv-X engine in a range of environments.

At lower speeds, the new engine sounded and behaved more like a diesel, occasionally rough, perhaps reflecting that it is still being refined. But once up to speed, it became smoother and quieter like a petrol unit, yet still with notable torque. Even in sixth gear, it could accelerate with reasonable vigour from relatively low speeds.

Perhaps unusually, the automatic version tested was notably smoother and more responsive than the manual, which both felt and sounded rougher.

The new platform felt stable, with the car reasonably well rooted, although it would be unfair to draw any real conclusions until sampled in something a lot closer to a true 2019 car.

After the test, Mazda used computer simulation to map my driving style in the prototype against the performance of a Mazda 3 with the current 2.0L Skyactiv-G engine to produce a fuel economy comparison. That data suggested that the Skyaxtiv-X engine would produce a 14% improvement in fuel economy. While we had no way of verifying that figure it would, if true, indicate the potential of this technology.

https://www.autocar.co.uk/car-news/...review-new-compression-ignition-petrol-engine

Skyactiv-X 1.jpg
Skyactiv-X 2.jpg
 
I want to see torque figures.

If they are able to create larger capacity engines with this tech then we could see a proper replacement for diesel in bakkies. I know that the EU is pushing to move away from diesel but people who use diesel bakkies for work (and not to drive around like ****ers) need torque. Perfect example is a family member who is a tree feller, his 3.2 Diesel Ford Rangers pull 4 ton loads on a daily basis and he needs the the low end torque to get that load rolling.
 
Here’s How Mazda’s Clever New Petrol Engine Works

Back in August, Mazda confirmed that it was developing what is set to be the world’s first commercial petrol engine to use compression ignition. And now the Japanese automaker has released a video explaining exactly how the new Skyactiv-X engine technology works.

Earlier, of course, the brand confirmed that the new engine would also employ supercharging. We expect the new engine to debut in the next-generation Mazda3, previewed by the Kai concept.

http://www.carmag.co.za/video_post/heres-how-mazdas-clever-new-petrol-engine-works/

Next Generation Gasoline Engine SKYACTIV-X: SPCCI

[video=youtube;RBlBrxT-Xy4]https://www.youtube.com/watch?v=RBlBrxT-Xy4[/video]
 
Why do I have this feeling that they've had this advancement sitting in a basement filled with other such optimisations and developments for many years and have only pulled it out now due to the rise of EV's and going "greener"?
 
Hehe. In the Age of Fake News (last fifty years) I can understand that any healthy mind is naturally suspicious.

However, I don't think there are grounds for that in this case. Petrol Compression Ignition engines have been a long-time hope and engineering challenge, and much researched by almost all the majors.

Working testbeds have been around for decades, but building a viable, reliable and cost-effective mass-produced engine with power curves suited to everyday driving has been very much more difficult than thought.

Advances in materials engineering, computer-aided fluid dynamics (for gas flow analysis and shaping), sensors, and intelligent spark-assisted ignition at certain stages is what now makes the Mazda engine commercially viable.
 
Arthur said:
Hehe. In the Age of Fake News (last fifty years) I can understand that any healthy mind is naturally suspicious.

However, I don't think there are grounds for that in this case. Petrol Compression Ignition engines have been a long-time hope and engineering challenge, and much researched by almost all the majors.

Working testbeds have been around for decades, but building a viable, reliable and cost-effective mass-produced engine with power curves suited to everyday driving has been very much more difficult than thought.

Advances in materials engineering, computer-aided fluid dynamics (for gas flow analysis and shaping), sensors, and intelligent spark-assisted ignition at certain stages is what now makes the Mazda engine commercially viable.
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Perhaps I don't quite understand the level of advacement this brings, I should probably read more about it, thanks for the info. :)
 
[video=youtube;9KhzMGbQXmY]https://www.youtube.com/watch?v=9KhzMGbQXmY[/video]
 
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