Automobile Cooling System Pipeline Testing

Questions and answers about the test of automobile cooling system pipeline
Automobile pipeline, like the blood vessel of automobile, maintains the operation of various systems. Among them, the cooling pipe related problems are widely concerned. Here Derui Auto Parts will answer the questions of cooling system pipeline testing.

Question 1. What is the chlorination resistance test?
It's an aging experiment.

Question 2. Should salt spray test be done? How many hours is the test usually carried out?
Pure rubber hose is generally not made now, mainly for the loop with nylon tube or stainless steel, generally 500h, and some specifications also have 600H.

Question 3. How to measure the system pressure? Is there a pressure sensor at the outlet of the water pump?
Vehicle measurement requires additional pressure sensors. At present, there is no pressure sensor in mass production vehicle, but the new generation of intelligent cooling system has pressure sensors, which are mainly used to diagnose the working state of water pump.

Question 4. What kind of test is electrochemical test?
The main purpose is to verify the electrochemical corrosion test.

Question 5. For the liquid cooling of battery pack, how to detect the leakage, if the connector is inside?
The bench can be used for pressure maintaining test. If the vehicle leaks, it can only be checked through the battery pack overheating fault. For example, the intelligent cooling system can be used for leakage alarm.

Question 6. There is a big gap between TPV and EPDM. How to judge it?
DVP has adhesion experiment.

Question 7. Is EPDM still used in cooling pipe of new energy battery package at present?
At present, EPDM is also used in new energy. Nylon pipes and TPV (low cost and light weight compared with EPDM) are available. The current development direction is nylon pipes and TPV pipes.

Question 8. Which medium is used in salt spray test? Sodium chloride, zinc chloride or calcium chloride?

There are all three, and acid salt spray with hydrochloric acid

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