汽车工程 ›› 2024, Vol. 46 ›› Issue (5): 935-944.doi: 10.19562/j.chinasae.qcgc.2024.05.019

• • 上一篇    

低黏度润滑油对重型商用柴油机节能减排和可靠性的影响研究

崔永1,2(),刘军1,2,王超1,2,王意宝1,2,刘建卫1,2,张林川1,2   

  1. 1.内燃机与动力系统全国重点实验室,潍坊 261061
    2.潍柴动力股份有限公司,潍坊 261061
  • 收稿日期:2023-08-14 修回日期:2023-11-04 出版日期:2024-05-25 发布日期:2024-05-17
  • 通讯作者: 崔永 E-mail:cuiyong@weichai.com
  • 基金资助:
    泰山产业领军人才工程项目(高热效率柴油机关键技术研究)资助。

Study on the Effect of Low Viscosity Lubricating Oil on Fuel Economy and Durability of Heavy Commercial Diesel Engine

Yong Cui1,2(),Jun Liu1,2,Chao Wang1,2,Yibao Wang1,2,Jianwei Liu1,2,Linchuan Zhang1,2   

  1. 1.State Key Laboratory of Engine and Powertrain System,Weifang  261061
    2.Weichai Power Co. ,Ltd. ,Weifang  261061
  • Received:2023-08-14 Revised:2023-11-04 Online:2024-05-25 Published:2024-05-17
  • Contact: Yong Cui E-mail:cuiyong@weichai.com

摘要:

从摩擦损失和泵送功耗两个方向论证了低黏度润滑油的有效性;从仿真计算和摩擦学试验两个手段探测了低黏度润滑油的可行性;从经济性、排放性、可靠性3个维度验证了低黏度润滑油对重型商用柴油机的影响。经济性主要通过倒拖摩擦功和万有油耗进行对比评价;排放性主要通过WHTC排放循环和机油耗进行对比评价;可靠性主要通过台架耐久和路试验证进行对比评价。结果表明:摩擦功可降低3.6%~12.5%;燃油经济性受负荷影响显著,常用工况区可节油(1~2) g/(kW?h);NO x 和PM排放几无影响;24 h机油耗影响差异在5%以内;耐久过程中机油压力及漏气量波动率符合限值要求、油液监测数据正常;耐久后关键摩擦副表观正常,磨损变化量小,在可靠性接受范围内;市场验证节油效果在6.41%左右,且换油期未受影响。研究结论对于双碳目标的完成和低黏度润滑油的推介应用尤其是在售成熟机型切换提供了数据依据。

关键词: 低黏度润滑油, 摩擦损失, 燃油经济性, 可靠性

Abstract:

The effectiveness of low viscosity lubricating oil is demonstrated from the two aspects of friction loss and pumping power consumption, and its feasibility is investigated by simulation calculation and tribological test. The effect of low viscosity lubricating oil on heavy-duty commercial diesel engines is studied from three dimensions of economy, emission and reliability. The economy is mainly evaluated by comparing the friction loss and fuel consumption. The emission performance is evaluated by the WHTC emission cycle and oil consumption. The reliability is evaluated by comparison of bench durability and road test. The results show that the friction loss can be reduced by 3.6%~12.5%. The fuel economy is significantly affected by the load, and at the common working conditions low viscosity lubricating oil cand save (1~2) g/(kW?h). There is little effect on NO x and PM emissions. Oil consumption differences are within 5%. In the durability process, the oil pressure and leakage fluctuation meet the requirements, and the oil monitoring data are acceptable. After durability, the appearance of the key friction pairs is acceptable and the change of wear dimension is small, so the reliability is acceptable. The market verifies that the fuel saving effect is about 6.41%, and the oil change interval is not affected by low viscosity lubricating oil. The research conclusions provide data basis for the completion of dual-carbon targets and the promotion and application of low-viscosity lubricants, especially the switch of mature models in sale.

Key words: low viscosity lubricating oil, friction loss, fuel economy, reliability