Execution standard: JB/T 13725-2019 "Test Method for Exhaust Gas Recirculation Coolers (EGRC) of Internal Combustion Engines" ISO 21441:2019《Road vehicles — Engine EGR cooler — Heat dissipation test methods》。 Measure the EGR cooler under specified operating conditions:

1. EGR cooler * * thermal efficiency (cooling efficiency)

2. Total heat exchange (heat dissipation)

3. Pressure loss on the exhaust gas side

4. Temperature, flow rate, and pressure drop at the inlet and outlet of the cooling medium side

5. Heat transfer performance curve under steady-state conditions