摘要
为了考察通用多级内燃机油的低温冷起动性能，受国家内燃机油攻关组委托，于１９９３年１２月在人工冷库内利用４种车型对选自不同炼油厂和研究单位的７个通用多级内燃机油进行了低温冷起动试验。结果表明，所有试油在根据粘度牌号确定的试验温度下均具良好的低温冷起动性能和泵送性能。同时发现，在低温环境下，发动机油低温表观粘度（ＣＣＳ粘度）在一定范围内与发动机起动转速之间没有明显的对应关系，即ＣＣＳ粘度越小，发动机起动转速不一定越高。
Cold starting tests of multigrade oils from different refineries and institutes were conducted on various types of trucks and cars for investigating the cold starting performance. Test resultsshowed that all the oil samples having good cold starting performance and satisfied pumpability at specifiedtest temperatures. It was found that no obvious interrelation between the apparent viscocity (in certainrange) and the engine cranking speed, i. e. the cranking speed does not show increase with the decrease inviscosity.
出处
《石油炼制与化工》
CAS
CSCD
1994年第12期29-33,共5页
Petroleum Processing and Petrochemicals
