Automotive

You may notice Mazda in the news today, promoting a new type of "compression-ignition" engine planned for production in 2019. This simply means the fuel is ignited spontaneously through extremely high compression in the cylinder, rather than ignited by a ...  

...particularly the emphasis on driving enjoyment. I am at odds with the statement that Mazda is about to produce the first commercially available HCCI. Honda did it in 96 as a way to clean up emissions. I once thought of shipping one over from Japan, but... 

.. 2 liter engines are already very fuel economic ... a self combustion engine in a petrol car (wow) could very well be my next purchase by 2020 ... The joy of a spontaneous petrol engine combined with diesel efficiency . Cheers, Filip

For the low rev range: " It’s called Spark Controlled Compression Ignition which means unlike a diesel, it has conventional spark plugs which will turn on at low revs so the engine isn’t relying on compression ignition through the whole rev range."