The first of Union Pacific's third-generation GTEL locomotives. Wikimedia Commons/Union Pacific. The combination of advances in engine management technology, in the design of heat exchange technology ...

The U.S. Army’s M1 Abrams main battle tank draws its power not from a conventional diesel engine but from the Honeywell AGT1500, a gas turbine that operates on the same principles as a jet engine.

Shares of Caterpillar, the maker of mining and construction machinery, are up more than 30% since year-end, making it the biggest contributor to the Dow Jones Industrial Average. WSJ’s Jonathan Weil ...