The Mikulin AM-37 was a Soviet aircraft piston engine designed prior to Russia's entry into World War II. An improved version of the Mikulin AM-35 V12 engine, it was only produced in small numbers because of its unreliability.
Development Design work on a development of the AM-35 with boosted supercharging and an intercooler positioned behind the supercharger began on the factory's initiative in December 1939. A batch of ten prototypes was completed in 1940 and bench-testing began on 5 January 1941. It passed its State acceptance trials the following April and was approved for production. It was tested in a variety of aircraft, but proved to be unreliable and prone to overheating. Factory No. 24 in Moscow built only twenty-nine AM-37s, as the new engine was designated, in 1941 before the German advance forced the factory to evacuate in October. Mikulin had been unable to resolve the issues with the AM-37 in the meantime and production was not resumed.Kotelnikov, p. 110
Variants AM-37A Planned version to be tested in February 1940, but no information if it was tested or it was even completed. and a weight of . AM-37TK TK for toorbokompressor. Planned version with a turbocharger, no further information known. AM-37P P for Pushechnyy or cannon. A 1940 project for a model with an autocannon mounted in the space between the cylinders, firing through a hollow reduction-gear shaft. No further information available. Am-37u/v or AM-37UV UV for udlinyonniy val or lengthened shaft. An engine with a lengthened shaft and remote gearing for use in the Gudkov G-1 fighter that carried the engine behind the pilot. Ordered developed in 1940 and design work started in 1941, but it was not completed.
Applications Mikoyan-Gurevich MiG-1 Mikoyan-Gurevich MiG-3 Mikoyan-Gurevich DIS Polikarpov TIS Tupolev Tu-2 Yermolaev Yer-2
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