Rudolf Diesel

Born in Paris on March 18, 1858, to German parents, Rudolf Diesel grew up between France, England, and Germany during a turbulent period in Europe. He studied engineering in Munich and became fascinated by how much energy ordinary engines wasted.

That question shaped his life’s work. Diesel developed a new kind of internal-combustion engine designed to be far more efficient than the steam engines and gasoline engines of his day. The invention that came to bear his name made him internationally famous and had a lasting impact on transportation, manufacturing, and power generation.

Diesel was more than a successful inventor: he also wrote and thought seriously about industry and society. In 1913, while traveling by ship from Antwerp to England, he disappeared at sea, and his death has remained a source of speculation ever since. Even so, his legacy is clear—few inventors have had their surname become so closely tied to a technology used across the world.