Investigation on surge judging method for automotive turbochargers

Turbocharger surge test bench was set up and applied to achieve the dynamic pressure signals of different portions of turbocharger during the turbocharger surge occurring. The sliding window method was adopted to establish the surge quantification judging criteria of the compressor and to give the critical values for the related parameters. These criteria may solve the problem to judge the turbocharger surge according to operator's experience during turbocharger performance test, also contribute to realize intelligent automatic operation of the turbocharger performance test bench and surge management in test process.