长城有机型发动机冷却液试验研究

为检验有机羧酸型发动机冷却液的性能，对使用该冷却液的捷达CTX型轿车进行了8万km的道路试验。试验过程中对其理化指标、外观和气味、金属试片腐蚀情况、橡胶和树脂相容性能以及添加剂的损耗进行了测试。试验表明，全有机型冷却液中的腐蚀抑制剂在金属试片表面生成稳定的化学保护膜，可以在低pH值下为黑色金属提供足够的腐蚀抑制保护。

Road Test for Changcheng Organic Engine Coolant

In order to validate performance of the organic carboxylic acid engine coolant,80000-kilometer road tests of a JETTA CTX car which uses this type coolant are done.During tests,its physical and chemistry specifications,ap pear-ance and smell,corrosion degree of metal test piece,compatibility between rubber and resin and loss of additives are mea-sured.It is shown by tests that the corrosion inhibitor in the full organic coolant can generate chemic protection film on the surface of metal test piece,and can provide enough corrosion inhibition for black metal under low pH value condi tion.