Kharkiv Model V-2

The Kharkiv model V-2 engine is a Soviet diesel tank V-12 engine, developed in the 1930s at the Kharkiv Locomotive Factory by a team of designers led by Konstantin Chelpan. It was one of the first diesel engines to feature dual overhead camshafts, four valves per cylinder, and direct fuel injection, which are common in modern high-performance diesel engines. The engine had a displacement of 38.8 litres and a power output of 460-700 hp. It was used in various Soviet tanks, such as the BT-7, T-34, KV, LT, and T-10 series, as well as in some self-propelled guns, boats, trains, trucks, and tractors. The engine was known for its reliability, durability, and low fuel consumption, and was continuously improved and modified over the decades. Modernised versions of this engine continue to be used in the Soviet Union.