The Holy Grail for any combustion engineer is to burn the fuel so it delivers the maximum efficiency for the given scenario, and that every molecule is burned. That applies from jet engines to ship diesels, to gasoline burning spark ignited internal combustion engines.
It is important to realize that Formula One did not invent it, nor did they develop or refine it, the heavy lifting was done in auto manufacturer's labs and test facilities.
In the HCCI (homogeneous charge compression ignition) engine, the end game is to produce a well-mixed gas and air product within the combustion chamber, and then ignite it so it produces maximum power and is efficient. This next picture is interesting, a comparison.http://www.nissan-global.com/JP/TECHNOLOGY/FILES/2010/07/f4c4d72533563e.jpg
The middle frame in both examples is very interesting. In the normal sparkignition engine, the flame front is still growing and travelling, which means there is still a lot of combustion waiting to happen. The problem is that the piston is already traveling down, and this is lost power. In the HCCI example, combustion is basically everywhere, and the fuel is being burned very quickly and efficiently.
For this to happen a few things are required. There must be a thorough understanding of the gas flow inside the combustion chamber, courtesy of massive computing power. The amount of fuel injected per cycle must be very precise, courtesy of injector technology. The engine must be stout enough to withstand such forces, and great precision in dimensions is also required. Lastly, a high compression pressure is required, and a turbo does make that a reality.http://image.slidesharecdn.com/homogeneouschargecompressionignitionhcciengines-150611051721-lva1-app6891/95/homogeneous-charge-compression-ignition-hcci-engines-9-638.jpg?cb=1433999967