Patent ID: 8117905

Claim:
A test bench conditioning system for a working fluid of a machine located on the test bench, wherein the conditioning system contains at least one pump ( 3 ) for circulating the working fluid, a heat exchanger ( 4 ) for cooling the working fluid coming from a discharge line ( 1 ) of the machine, a supply line ( 2 ) for supplying to the machine the working fluid coming from the heat exchanger ( 4 ), a heating device ( 5 ) for the working fluid positioned in a line connecting the discharge line ( 1 ) and the supply line ( 2 ) and in parallel to the heat exchanger ( 4 ), whereby the working fluid from the heating device ( 5 ) is fed into the supply line ( 2 ) to the machine via a mixing valve ( 6 ), with a bypass ( 8 ) that can be shut off between the discharge line ( 1 ) and the supply line ( 2 ), a control device for setting a temperature profile for the working fluid, said test bench conditioning system comprising moreover a connecting line ( 10 ) with a control valve ( 11 ), said connecting line ( 10 ) leading from the supply line ( 2 ) in front of the mixing valve ( 6 ) to the discharge line ( 1 ) in front of the pump ( 3 ).