Transport & space · 1897
Diesel engine
Compression ignition delivers the efficient, high-torque engine that moves world freight.
Rudolf Diesel's 1897 engine reached about 26 percent efficiency, far ahead of steam. Diesels took over ships from the 1910s, locomotives from the 1930s and trucks after that. Nearly all container ships, freight trains and heavy trucks still run on them.
What it built on 2
What it led to 1
Related measurements
The dashed line marks when it first worked.
Merchandise exports as a share of world GDP Latest: 24.2 % of GDP (2014) Source: Our World in Data
Crude oil price since 1861 Latest: 435 current US$ per m3 (2025) Source: Our World in Data
Fossil fuel consumption Latest: 144k TWh (2025) Source: Our World in Data