Abstract: A gas channeling cylinder head assembly for fixed attachment to a cylinder, the cylinder having a slidably mounted piston, the piston being cyclically moveable, the assembly incorporating a plenum having a first port, a second port, and a third port, the first port, upon the fixed attachment, communicating with the cylinder; a poppet valve; a solenoid actuator connected operatively to the poppet valve for alternatingly seating and unseating the poppet value at the first port, the solenoid actuator seating and unseating the poppet valve; and a check valve connected operatively to the plenum, the check valve being adapted for alternatingly permitting and resisting inward and outward flows of the gas through the second port; the check valve incorporating a vane which is adapted for movement between flow permitting and flow resisting positions, the vane being positioned for, upon movement to the flow permitting position, directing flows of the gas toward the first port; the assembly further incorporating a second