Engine simulation model calibration method

The invention discloses an engine simulation model calibration method. The method comprises the following steps: analyzing a to-be-calibrated engine simulation model structure and a mass and energy transfer relation of sub-modules of the to-be-calibrated engine simulation model structure, and dividing to-be-calibrated modules; determining a first-stage to-be-calibrated module from all the to-be-calibrated modules, determining a next-stage to-be-calibrated module according to the relationship between the remaining modules and the previous-stage to-be-calibrated module, and constructing a hierarchical structure of the to-be-calibrated modules; calibrating the primary to-be-calibrated module, integrating the secondary to-be-calibrated module with the primary to-be-calibrated module after calibration is finished, generating an integrated to-be-calibrated module, and calibrating the integrated to-be-calibrated module; and in the same way, the calibrated integrated to-be-calibrated module and the next-stage to-be-c