【作者】

Jicheng Piao，Jie Zhang

【摘要】

论文已在中国上海举行的2013年CIMAC大会上发表。论文的版权归CIMAC所有。Nowadays, asphaltene contamination called ’Black Sludge’ in marine trunk piston engine oils (TPEOs) continues to be a common issue. ’Black Sludge’ can occur through leaky fuel pumps or poor combustion which is usually detrimental to lube oil properties such as increasing viscosity and volatility, weakening the function of the additives. Meanwhile ’Black Sludge’ can deposit on a piston surface and act as an inulating layer to influence engine efficacy and heat transfer, sometimes may even cause crankcase explosion, therefore selecting proper TPEOs plays a significant role in controlling ’Black Sludge’. A key design feature for preventing asphaltene precipitation is choosing the proper additives, especially detergent additives in reducing ’Black Sludge’. In this paper, asphaltene dispersancy effectiveness was investigated through making the simulated solutions according to the hydrocarbon types of typical Group I and Group II base oils. Utilizing different facilities including Malvern Mastersizer 2000 particle size analyzer,LaserNet Fines®-C particle counter, Focused Beam Reflectance Measurement to interpret the effectiveness of calcium alkyl sulfonate and calcium alkyl salicylate with combining traditional spot dispersancy test.All tests have a good correlation with real asphaltene dispersancy effectiveness. Test results show that salicylate package has a more outstanding performance than sulfonate one.

【会议名称】

第27届CIMAC会议

【会议地点】

上海

【下载次数】

2

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