The Secret Device That Could Be the Key to Mazda's Revolutionary Gas Engine
- Thread starter paris1
- Start date
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- 2016.5 CX-5 GT AWD titanium/black 2016 Miata Club ST MT white
Hey! I use one of those secret devices in my hot tub.
Thanks for the link.
Thanks for the link.
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- 23 CX-5 Premium
I thought the same thing!
Looks like a paper came out on this a few years ago: http://www.greencarcongress.com/2013/08/20130828-hcci.html
Research put into action!
Research put into action!
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- CX5 Akera 2.2 Diesel
Smaller companies often lead the way with innovation.
I have always said that big organisations are not better. Small is better for many reasons, and this is just one.
I have always said that big organisations are not better. Small is better for many reasons, and this is just one.
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- 23 CX-5 Premium
What Mazda is doing here reminds me an awful lot of Honda's CVCC engine development in the early '70s when they were small and able to think outside the box. As a result, they were able to sell cars in the US for years without being saddled with the expensive calalytic converters everyone else was forced to use.
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- Plano, Texas, USA
You add more sensors and software to detect those failures ⋯ (whistle)
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- Plano, Texas, USA
The new SkyActiv-X engine by Mazda is based on homogeneous charge compression ignition HCCI. HCCI engines have been around for many years, but Mazda is trying to make it work for mass production with decent longavity and efficiency. HCCI engine should be without spark plugs, but now Mazda has to use spark plugs for initial start up and disable them afterwards. To me, the whole technology is still premature for mass production and we should wait and see.
Downgrade to spark mode? Will still run, just not as efficiently.
The trouble with HCCI has been cold temps. It throws off the air/gas mixture to the point where if you design the engine to work well that way, it won't run well when it reaches normal temp. An engineer chimed in on Jalopnik a few weeks back; he figured they had also made a breakthrough in sensors (and processing) because its difficult to ascertain the status inside the cylinder without a direct measurement. Direct measurement is hard because the inside of the cylinder is pretty hostile, naturally.
