Mazda achieved one of the greatest upsets in motorsport history by winning the world’s toughest endurance race using an engine design no other manufacturer dared to trust. • Mazda won the 24 Hours of Le Mans in 1991. • The victory was powered by a rotary (Wankel) engine, not a piston engine. • The winning car was the Mazda 787B. • It remains the only Le Mans victory by a Japanese manufacturer. • It is also the only rotary-engine car ever to win Le Mans. • The engine was naturally aspirated, prod

How Wankel Engine Works | Mechanical Engineering World