Pressure Std
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Coolant / Air cooler and compensation reservoir Strength Tests Test data 1. Purpose This standard sets the test data for strength tests on coolant / air coolers, coolant / air cooler sections and compensation reservoirs. The strength tests include the oscillating compressive stress and vibration tests and tests under temperature and pressure stress.
2. Scope of application This standard applies to test and initial samples and to series products of coolant / air coolers, block coolers and compensation reservoirs. Block coolers are coolant / air coolers which are used outside the motor vehicle area. It applies if reference is made to it in technical documents (drawings, specifications, work regulations).
3. Test methods and test data The test data on the test methods is shown in Tables 1 to 7. If technical documents (drawings, specifications, work regulations or similar documents) contain deviating information, then the values specified in these documents will apply.
3.1 Temperature tests The test data for the temperature change tests are shown in Table 1 Table 1 Coolant / Air cooler Test Data
Unit Car
Test agent
-
Commercial Vehicle
50 Vol. % monoethylene glycol, 50 Vol % water
Test agent temperature
°C
Pressure
bar
Temperature cycle frequency
1/h
3 to 7
1 to 4
Temperature cycle
n times
1000
2000
+ 80 -+
3
- 10 -+
1.3 -+
3
+110 -+
0.2
3
- 10 -+
2.0 -+
3
0.2
Level of Acceptance: There shall not be any damage, deformation to the radiator and radiator shall satisfy the requirements of pressure test.
3.2 Long time tests in the hot cabinet for compensation reservoirs Compensation reservoirs made of plastic are exposed to heat and a constant temperature stress. The test data for the tests being carried out in the hot cabinet are shown in Table 2. After the test the test specimen must be undamaged and must be impermeable at overpressure as defined in the table. Table2 Coolant / Air cooler Test Data
Unit Car
Commercial Vehicle
Test agent
-
50 Vol. % monoethylene glycol, 50 Vol % water
Test agent Volume
-
50% of compensation reservoir volume
Hot cabinet temperature
°C
Overpressure
bar
If determined by valve setting on the reservoir. A overpressure gauge is to be interpolated.
n times
200
Temperature cycle
+ 120 -+
3
+ 95 -+
3
2. Scope of application This standard applies to test and initial samples and to series products of coolant / air coolers, block coolers and compensation reservoirs. Block coolers are coolant / air coolers which are used outside the motor vehicle area. It applies if reference is made to it in technical documents (drawings, specifications, work regulations).
3. Test methods and test data The test data on the test methods is shown in Tables 1 to 7. If technical documents (drawings, specifications, work regulations or similar documents) contain deviating information, then the values specified in these documents will apply.
3.1 Temperature tests The test data for the temperature change tests are shown in Table 1 Table 1 Coolant / Air cooler Test Data
Unit Car
Test agent
-
Commercial Vehicle
50 Vol. % monoethylene glycol, 50 Vol % water
Test agent temperature
°C
Pressure
bar
Temperature cycle frequency
1/h
3 to 7
1 to 4
Temperature cycle
n times
1000
2000
+ 80 -+
3
- 10 -+
1.3 -+
3
+110 -+
0.2
3
- 10 -+
2.0 -+
3
0.2
Level of Acceptance: There shall not be any damage, deformation to the radiator and radiator shall satisfy the requirements of pressure test.
3.2 Long time tests in the hot cabinet for compensation reservoirs Compensation reservoirs made of plastic are exposed to heat and a constant temperature stress. The test data for the tests being carried out in the hot cabinet are shown in Table 2. After the test the test specimen must be undamaged and must be impermeable at overpressure as defined in the table. Table2 Coolant / Air cooler Test Data
Unit Car
Commercial Vehicle
Test agent
-
50 Vol. % monoethylene glycol, 50 Vol % water
Test agent Volume
-
50% of compensation reservoir volume
Hot cabinet temperature
°C
Overpressure
bar
If determined by valve setting on the reservoir. A overpressure gauge is to be interpolated.
n times
200
Temperature cycle
+ 120 -+
3
+ 95 -+
3
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