Turbocharger test bench

The invention discloses a turbocharger test bench, and relates to the technical field of electromechanics, the turbocharger test bench comprises a multi-way valve, the multi-way valve is sequentially connected with an air inlet pipeline, an air duct, an air return pipeline and an air outlet pipeline, one end, far away from the multi-way valve, of the air duct is connected with a combustion chamber, and the other end of the combustion chamber is provided with a first pipeline connected with a turbocharger; the end, away from the multi-way valve, of the air return pipeline is connected with a second pipeline communicating with the turbocharger, and an electric proportional valve is installed on the second pipeline. A first sensing assembly is installed on the side wall of the first pipeline, and a second sensing assembly is installed on the side wall of the second pipeline. The end, away from the multi-way valve, of the air inlet pipeline is connected with an air compressor, and a manual air outlet valve is ins