The Kharkiv model V-2 (Russian: В-2) was a Soviet diesel tank V-12 engine designed at the Kharkiv Locomotive Factory by Konstantin Chelpan and his team. It is found in the BT-7M (BT-8), T-34, KV, IS and IS-10 (T-10) tanks, and by extension, the vehicles based on them, such as the SU-85 and SU-100 tank destroyers based on the T-34 and the ISU-122 and ISU-152 self-propelled guns based on the IS-2. Throughout its production life, output ranged from roughly 450-700 hp. The water-cooled engine was made of aluminium.
Displacement 38.8 L (2,367.7 cu in), bore 150 mm (5.9 in), stroke 180 mm (7.1 in) left cylinder group and 186 mm (7.3 in) right cylinder group, torque 220 kgf⋅m (2,157.5 N⋅m; 1,591.3 lbf⋅ft).
- V-2: Initial production version, 1937. Used in the BT-7M (BT-8).
- V-2-34: V-2 with revised hull mounts, fuel and cooling connectors and refined clutch, 1939. Used in the T-34, SU-85 and SU-100, it produced 500 hp (370 kW) @ 1800 RPM.
- V-2K: V-2 with increased injection pressure and higher engine speed, 1939. Used in the KV-1 and KV-2, it produced 600 hp.
- V-2V: V-2 detuned for use in lighter vehicles, 1940. Used in the Voroshilovets artillery tractor, it produced 375 hp.
- V-2L/P: V-2 modified for boats, not built.
- V-2SN (Нагнетатель системы, supercharger systems): V-2 with a supercharger from the Mikulin AM-38 aircraft engine, 1940. Used in the KV-3, it produced 862 hp.
- V-2-10 (V-2IS): V-2 with stronger cylinders and heads, improved fuel pump, larger radiator and oil cooler and modified hull mounts, 1943. Used in the IS-2, ISU-122 and ISU-152, and T-10, it produced 520 hp.
- V-2-450AV-S3: V-2 modified for oil drilling equipment, it produced 450 hp.
- Hughes, Matthew and Chris Mann. The T-34 Russian Battle Tank. Wisconsin: MBI Publishing Company, 1999 ISBN 0-7603-0701-6.
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