FIELD: power machine building.
SUBSTANCE: invention relates to power plant engineering. Method of pneumatic drive of two-valved gas distributor of free piston power module with generic external combustion chamber is following. Compressed air for driving the pneumatic two-valve gas distributor of power module is taken from compressed air supply line to external combustion chamber, enters pneumatic accumulator and charges it. To open gas distribution valve, managing system sets control valve to the position of gas distribution valve, at which air from accumulator enters drive piston cavity of gas-distributing valve, when compressed air enters that gas-distributing valve opens into, and combustion products from external combustion chamber enter piston cavity of power module's expansion machine. To open gas distribution valve, controlling system sets control valve to the position of gas distribution valve, at which air from accumulator enters drive piston cavity of gas-distributing valve, when compressed air enters that the gas valve closes into. After exhaust cycle of exhausted combustion products, combustion product inlet valve is transferred to closed position and exhaust gas valve to the open position. For this, controlling system transfers control valve through air flow of inlet-outlet valve to the position, at which air from pneumatic accumulator enters that drive piston cavity of the inlet-outlet valve, when compressed air enters into which, combustion product inlet valve closes and exhaust gas valve opens. Exhausted combustion products from piston cavity of power module expansion machine are thrown into the exhaust manifold. In order to return the combustion product inlet valve to open valve and flue gas exhaust valve to the closed position, the control system transfers the control valve of the air flow of inlet-outlet valve to the position, in which air from pneumatic accumulator enters the cavity of the inlet / outlet valve piston, when compressed air enters one into which the combustion product inlet valve opens into, and flue gas discharge valve closes into.
EFFECT: invention provides increase of gas exchange processes intensity in the cylinders of a free-piston power module with an external combustion chamber in the entire range of loads on the power module.
1 cl, 2 dwg
