A method on pre-matching of engine with turbocharger and their applications

Based on the engine performance requirements and flow characteristics of supercharger, the paper presents a method on pre-matching of engine with turbocharger. Combined with database, the special software for matching of turbocharger is developed. To match of a natural inspiration gasoline engine with turbocharger, the turbocharger is chosen via this method firstly, and then the turbocharged gasoline GT-power model is built. After comparing the results of simulation with experiment, it can be conclude that the pre-matching results are consistent with the simulation results, and can reflect the actual situation in experiment, especially at mid-speed and low-speed. At the same time, the turbocharger works stably and reliably, and the engine achieves its torque target. The method provides the theoretical basis for matching of engine with turbocharger, and has certain practical significance and applicative value of project.