DEVELOPMENT OF PT PUMP AND INJECTOR TEST STANDS FOR CUMMINS ENGINE

The typc PT—821 PT Pump test stand and typePT—881 injeetor test stand are a set ofspecial test stands for calibration of PT Pumps and injeetors of Cummins engines.Both test standsmay be used in conjunction with any model of Bosch injection pump test benches for PT Pumps andinjector calibration.During PT Pump calibration,the type PT-821 test stand should be used in con-junction with a Boseh injeetion pump test bench.The PT Pump to be tested is installed on Boschinjeetion pump test bench through a mounting bracket and is driven by the bench shaft.When cali-braling PT injeetors,both the PT-881injector test stand and the PT--821 PT Pump test stand shouldbe used in conjunction with a Bosch injection pump test bench with the PT--881 injeetor test stand in-stalled on Bosch lest bench.The injector to be tested is driven by the Bosech injection pump test benchthough a coupling.This paper descrubes the structure and function of the PT--821 PT Pump teststand and PT--881 ubhector test stand.Some technical problem