Engine performance determination method and device and electronic equipment

The embodiment of the invention provides an engine performance determination method, which comprises the following steps of: acquiring geometrical characteristics and combustion characteristic parameters of an engine, and establishing a performance simulation model according to the geometrical characteristics and the combustion characteristic parameters; obtaining initial combustion parameters of the engine; processing the initial combustion parameters through a performance simulation model and a pre-established complete machine thermodynamic model, so that the working process of the engine is simulated, and external characteristic data of the engine and performance prediction data corresponding to the external characteristic data are obtained; and judging whether the external characteristic data is reasonable or not, and outputting performance prediction data representing engine performance when judging that the external characteristic data is reasonable. The corresponding performance prediction data can be