Internal power connecting structure of engine model capable of operating automatically

The utility model discloses an internal power connecting structure of an engine model capable of operating automatically, which structurally comprises a power device, a transmission system, a crankshaft and a cylinder. The power device is connected with the crankshaft and drives the crankshaft to rotate via the transmission system, and the cylinder is connected onto the crankshaft in a clamped manner via a cylinder connecting rod. The power device comprises a motor and a power source, the power source is placed in a model base, and the motor is placed below the crankshaft above the base. The power source of the internal power connecting structure is the motor and can be (a battery, a micro-charger and a direct charger), the motor is started by electric power, drives the transmission system and then drives the crankshaft to move alternately by 360 degrees, and the cylinder is connected onto the crankshaft in the clamped manner by the aid of the cylinder connecting rod. The internal power connecting structure r