The engine (apx. 4.5 ft (1.4 m) long x 3.5 ft (1.1 m) high), is one of the largest automobile engines ever made, producing 205 to 223 kW (275 to 300 hp). Its cylinders, bored to 125 by 130 mm (5.1 in), each displaced more than the entire engine of the contemporary Type 40 touring car. It had 3 valves per cylinder driven by a single overhead camshaft. Nine bearings were specified for reliability, but only a single custom carburettor was needed. A derivation of the Royale engine was used in railcars.
The Royale was launched just as the world economy began to sour. Just six were built between 1929 and 1933, with just three sold to external customers.
Bugatti Veyron
Bugatti Royalle Coupe
Bugatti Royalle
Bugatti Royalle
