Hydraulic excavator rotating speed adjusting and testing system and method based on engine ADTC active control function

The invention discloses a hydraulic excavator rotating speed adjusting and testing system and method based on an engine ADTC active control function. The hydraulic excavator rotating speed adjusting and testing system comprises an engine and an engine controller, the engine controller is connected with a hydraulic pump through a coupler, the hydraulic pump is connected with a working device oil cylinder through a multi-way valve, and the hydraulic excavator rotating speed adjusting and testing system further comprises an MC controller. The MC controller is connected with a pilot handle, an engine controller, a hydraulic pump and a pilot pressure reducing valve, and the pilot pressure reducing valve is connected with a pilot pump and a proportional electromagnetic valve. According to an engine, by collecting an auxiliary pressure signal, the oil injection quantity can be adjusted in advance prior to the required power or torque of the hydraulic pump to overcome torque changes of the next stage, such as torque