The hybrid comprises a two-cycle engine, boosted by the engine power compressor and a hydraulic pump. The pump plunger fastened to engine piston and located coaxially with the compressor piston and pump rotor, provide direct energy transmission to the compressor and pump. The plunger and compressor piston, each connected to one of two diametrically opposite axial push rods, of the rotor. The push rods synchronize and balance the pistons, which move opposite directions into underside of the engine piston space. The reducer synchronizes the separate rotors motion, activate engine and compressor camshafts and conventional accessory units. The engine can be high power started and restarted irrespective of parking time. Because of direct energy transmission the hybrid increases efficiency and specific power, while minimizing the weight, installation space and fuel consumption necessary in particular for automobile hydrostatic transmission.