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Does diesel engine release maximum soot?

Diesel engines generally release more particulate matter (PM) compared to gasoline engines. PM consists of small particles such as soot, smoke, and dust. Diesel engines operate at higher compression ratios and produce higher combustion pressures than gasoline engines, which can result in the formation of more soot particles. Additionally, diesel fuel is a heavier fuel than gasoline, and its combustion process produces more incomplete combustion products that can contribute to the formation of PM, including carbon particles and unburned hydrocarbons. It's important to note that modern diesel engines with advanced emission control technologies have significantly reduced the amount of soot and PM emissions compared to older diesel engines.
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