NOVELTY - The system has an oil tank (1) connected with a low-precision filter (2a), a high pressure fuel pump (3), a pressure gauge, a pressure gauge switch (4), a high-precision filter (2b), two manual valves (6a, 6b), a high frequency electromagnetic valve (7), a turbine flow meter (8), a pressure transmitter (9) and a centrifugal air nozzle (10) that are connected together. A nitrogen extruding branch is connected with a high pressure nitrogen tank (11), a check valve (12), a high precision constant pressure reducing valve (13) and an energy accumulator (14) that are connected together.    USE - Combined fuel pump oil supply system for a high frequency magnetic valve pulse detonation engine.    ADVANTAGE - The system can successfully realize intermittent fuel supply and adopt a magnetic valve to supply oil. The system adopts an accumulator structure to form air bag extruding oil supply and avoid requirements of a high pressure container so as to reduce processing cost. The system ensures safety and oil pressure stability through the centrifugal air nozzle. The system has high pulverization effect. The system makes an engine to be stable while high frequency knocking according to a stable liquid fuel process.    DETAILED DESCRIPTION - The device is provided with a high pressure fuel pump i.e. ceramic plunger pump. The energy accumulator e.g. internal taper single valve accumulator or mechanical-electric control accumulator, is made of a heat-resistant rubber fuel oil material.    DESCRIPTION OF DRAWING(S) - The drawing shows a hydraulic circuit diagram of a combined fuel pump oil supply system.    Oil tank (1)    Low-precision filter (2a)    High-precision filter (2b)    High pressure fuel pump (3)    Pressure gauge switch (4)    Manual valves (6a, 6b)    High frequency electromagnetic valve (7)    Turbine flow meter (8)    Pressure transmitter (9)    Centrifugal air nozzle (10)    High pressure nitrogen tank (11)    Check valve (12)    High precision constant pressure reducing valve (13)    Energy accumulator (14)