The test system is mainly suitable for the research and development and product inspection of thermal management systems of buses, commercial vehicles, special vehicles and construction machinery, and meets the test of thermal management systems of internal combustion engines and new energy power vehicles not exceeding 200KW.

       According to the development trend and demand of various motor vehicle cooling systems, apply reasonable design ideas, select advanced test instruments and adopt more realistic test methods, further improve the test level of the heat dissipation system, and adapt it to the performance test of a variety of water radiators, intercoolers and other heat dissipation components in the cooling system of motor vehicles and the inspection test of the actual operation effect of the cooling system. Its purpose is to improve the efficiency of vehicle cooling systems and to provide practical basis for improving the design of systems or components.

I. Experimental Projects:

1. Standard heat dissipation

2. Wind side heat dissipation

3. Heat dissipation on the water (oil, gas) side

4. Wind resistance

5. Water (oil) resistance;

      Gas pressure drop (internal resistance)

6. Heat dissipation coefficient

7. Cooling module simulation bench test

Second, radiator fan test computer measurement and control system composition:

1. Box for wind tunnel test

2. Fan frequency conversion speed regulation system

3. Water circulation and temperature control system

4. Construction machinery hydraulic oil circulation and temperature control system

5. Hydraulic torque oil circulation and temperature control system

6. Charge air circulation and temperature control system

7. Computer measurement and control system:

     On-site testing instrumentation

     Lower computer process control system

     Upper computer control system

8. Electrical and power distribution

III. Main Performance Indicators (Discussion Reference):

(1) Air side, test piece parameters and environment

1. Fan speed: 4.0~15.0m/s (frequency conversion speed regulation, PID control)

     Standard heat sink: 800X800mm as the measurement standard

     Air flow: 3000~37000m3/h

2. Maximum front size of test radiator: 800×800mm;

3. Minimum front size of test radiator: 300×300mm

4. The thickness of the radiator is between 40-300mm. The most commonly used is 60-160mm

5. Ambient temperature: 5~35°C

6. Ambient temperature of computer measurement and control system: 15~30°C

(2) Water (coolant) radiator performance test

1. Circulating water (coolant) flow: 40~400L/min (frequency conversion adjustment, PID control)

2. Circulating water (coolant) temperature: room temperature ~ 100 °C± 0.5 °C (PID control)

3. Thermal balance error (average): ≤±3.0%

4. Repetition error (average): ≤3.0%

5. The maximum heat dissipation of the water radiator ≤ 200KW

6. The design pressure of the water circulation system is ≤300kPa

7. Water resistance: Max.100kPa

8. Temperature rise time: 40min

(3) Hydraulic oil radiator performance test

1. Circulating oil flow: 40~400L/min (frequency conversion adjustment, PID control)

2. Circulating oil temperature: 120°C ±0.5°C

3. Circulating oil resistance: <200kPa

4. The maximum temperature difference between inlet and outlet is 10 °C

5. Temperature rise time: 40min

(4) Performance test of hydraulic torque oil radiator

1. Circulating oil flow: 20~200L/min (frequency conversion adjustment, PID control)

2. Circulating oil temperature: 120°C ±0.5°C

3. Circulating oil resistance: <200kPa

4. The maximum temperature difference between inlet and outlet is 10 °C

5. Temperature rise time: 40min

(5) Intercooler performance test

1. Circulating air flow: 5000~30000L/min±1.5% (roots fan frequency conversion speed regulation, PID control)

2. Circulating air temperature: 100~230°C (PID control)

3. Circulating air pressure: 50~220KPa

4. The maximum heat dissipation of the intercooler≤ 120KW

5. Internal resistance pressure drop of intercooler: ≤100KPa

6. Temperature rise time: 40min