Internal-combustion engine governor computer test bench is self-designed which uses the advanced technique of other countries for reference. It is the latest domestic computer test bench.. The series of products adopt the most advanced international variablefrequency technology. It presents the following features: stepless speed adjusting, wide range, stable rotation speed, accurate speed adjusting, large output torque, small rotation speed fluctuate, low noise. Revolution, curve, sensitivity, toothedbarstroke, fuel supply pressure, fuel supply temperature, gas supply pressure (positive and negative) is displayed and controlled by computer with high measurement precision and reliability.