V24 engine

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A V24 engine is a V engine with 24 cylinders, suitable only for very large trucks or locomotives.

A very large V24, the AS.6, engine was built by FIAT in the early 30s as a powerplant for the competition airplane Macchi - Castoldi M.C. 72. This engine was in reality formed by mounting two FIAT AS.5 V12 one behind the other, obtaining a total displacement of over 50L and a power output of about 3100 hp. The two units remained separated (they could be started separatedly) but the output shaft was shared. Between the units sat the gearbox that was used to reduce the propeller speed, and the final output shaft ran between the cylinder banks of the front engine to reach the nose of the airplane.

A 15.0 L V24 giving 1000 hp was planned for the 2002 Maybach. A prototype was made, but was too loud and it never went into production.

Piston engine configurations
Straight	Single, 2, 3, 4, 5, 6, 8, 9, 10, 12, 14
V	2, 4, 5, 6, 8, 10, 12, 16, 20, 24
Flat	2, 4, 6, 8, 10, 12, 16
W	8, 12, 16, 18
Other inline	H, VR, Opposed, U (Square), X
Other	Radial, Rotary, Pistonless (Wankel)