The schemes and operation of hybrid power plants under varying conditions of the vehicle with an internal combustion engine and piston air motor with automatic timing system, the results of experimental studies of single row of piston air motor ramjet with automatic valves.

The simplicity of design of the air motor, high efficiency, the ability to control a wide range of work allows their use in creating environmentally friendly vehicle engines that use energy inert pre-compressed gases.
Recommendations for the development of a fundamentally new design of air motors using the unified database of piston compressors.