Free-piston engine arrangement as two-cycle combustion engine with hydraulic circuit, uses hydraulic piston for moving cooperating engine piston by pressure in low-pressure reservoir

摘要

A free-piston engine (1) has an engine piston (10) and a hydraulic piston (20) operating together with the engine piston (10), the hydraulic piston moving the engine piston (10) in a direction of the top dead point (TDP) by being activated with the pressure held in a low-pressure storage reservoir (24). A piston device (40) is driven by the pressurizing medium supplied by the hydraulic piston (20) for filling a low pressure reservoir (24).