Compression ignition gasoline engines
I notice Mazda is going to have a compression ignition gasoline engine that will still have spark plugs for starting and heavy loads. What would be the advantages of such a engine?
Forum Discussion
Gasoline engines were limited in compression ratio because of detonation, the higher the compression, the greater the efficiency and power. Recent engines have been getting better by controlling the fuel delivery with advanced injection systems. Apparently this new engine has even better control by burning fuel as it is injected, that takes extremely high pressure. If this is the case, the compression ratio is likely very high to take advantage of compression ignition.
