Short answers, pulled from the story.
On the 17th of February 1894, a small engine ran under its own power for the first time inside a factory in Augsburg. This event marked the beginning of a radical new idea that would eventually become the diesel engine.
A typical compression ratio in diesel engines ranges between 15:1 and 23:1 to create temperatures high enough to ignite fuel without sparks. This process differs fundamentally from spark-ignition gasoline engines where air-fuel mixtures enter the cylinder before combustion.
Production began on the Mercedes-Benz 260 D in 1935 as the first mass-produced diesel-powered passenger car. That same year, Daimler-Benz manufactured the Mercedes-Benz OM 138 engine starting in 1935.
During World War II, over 900 Junkers Jumo 205 aviation diesel engines were produced for military aircraft. These engines provided propulsion for various military applications throughout the conflict.
Regulatory frameworks such as Euro norms established minimum requirements beginning with Euro 1 implementation on the 1st of July 1992. Sulfur dioxide emissions disappeared from road vehicle diesel fuel after 2003 when ultra-low sulfur standards took effect globally.