FIELD: power production.
SUBSTANCE: pneumatic valve drive in single-cycle free piston engine ensures operation of gas distribution valve due to energies resulting from air compression in the engine compressor before the combustion chamber. When it is required to open or close engine valve, the drive control system records position of engine piston and sets air distribution unit in a position providing compressed air supply to the valve drive piston cavity where the compressed air opens or closes valve while interacting with valve drive piston. The specific feature of the pneumatic engine valve drive is that in order to actuate engine valve drive, the compressed air is taken on the way of the compressed air flowing from the compressor to combustion chamber.
EFFECT: reduced power consumption.
2 dwg
