What is stratified combustion?

Stratified combustion refers to a technique that optimizes the combustion process by creating a specific mixture of fuel and air in the combustion chamber. This method involves layering different fuel-air mixtures, where a rich mixture is placed in the area of the combustion chamber where ignition occurs, while a leaner mixture surrounds it. This allows for more complete and efficient combustion, which ultimately leads to a reduction in emissions.

The reason this technique is effective in reducing emissions is due to its ability to burn fuel more completely. By controlling the mixture ratios and promoting an efficient combustion process, stratified combustion can minimize unburned hydrocarbons and other pollutants that are typically produced during traditional combustion processes. Additionally, this method often allows for better fuel economy and can enhance overall engine performance as well.

The other options do not accurately describe stratified combustion. While it does improve combustion efficiency, it is primarily known for its role in emissions reduction rather than merely enhancing engine power or being a specific fuel or engine configuration.