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Why Automotive Parts Need to be Tested in High Altitude Low Air Pressure Chambers
2024-05-08
Why automotive parts need to be tested in high altitude low air pressure chambers High altitude low air pressure test chambers are test equipment used to simulate high altitude environmental conditions, helping manufacturers and researchers to understand how their products will perform in these extreme conditions and to optimise the design and performance of their products. Test chambers are widely used in several industries, one of which is the automotive industry. As China is a large plateau country, more than 60 per cent of the area is at an altitude of 1,000m above sea level, of which 33 per cent is at an altitude of 2,000m above sea level. The climatic and environmental conditions of the plateau region are characterised by climatic conditions such as low air pressure, low temperature and low absolute humidity. Under these conditions, automobiles and auto parts are greatly affected by the climatic environment, and their overall performance may decline, and long-term operation may lead to product failure. Therefore, in order to check the reliability of automobiles and auto parts, it is necessary to use a low air pressure simulation laboratory to test the products for high-altitude environmental adaptability. Reasons for high altitude testing of automobiles: The air pressure is lower in high altitude areas, the air is thinner, and the amount of fuel required for combustion is different from that of the plains. It is necessary to enable the engine ECU to recognise plateau atmospheric pressure and make corrections to the air intake. In the plateau region the system assessment focuses on: adjustment of the altitude correction factor, fuel cut correction, cold start, hot start and warm start, hot idle, mixture pre-adjustment, driving performance, detonation control, adjusting the exhaust temperature and catalytic converter temperature by delaying the ignition advance angle at high loads, and charcoal canister control.

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