Modelling the impact of reducing lubricant viscosity on a conventional passenger car fuel economy and wear protection

被引：0
|
作者：
Blanco-Rodríguez, Javier [1 ]
Simón-Montero, Xavier [1 ]
Cortada-García, Martí [2 ]
Maroto, Santiago [2 ]
Jacobo, Porteiro [1 ]
机构：
[1] CINTECX, Universidade de Vigo, Grupo de Tecnoloxía Enerxética (GTE), Lagoas-Marcosende s/n, Vigo,36310, Spain
[2] Repsol SA, Madrid, Spain
来源：
Results in Engineering | 2024年 / 24卷
关键词：
This study explores how reducing lubricant viscosity affects fuel economy in passenger cars through experimental characterization and semi-predictive modelling. Thus; three engine oils (0W-20; 5W-30; and 5W-40) were tested for their rheological and tribological properties. Data were introduced into a detailed GT-Suite model of a turbocharged gasoline SUV. Simulations over six different driving cycles; including European homologation and real-driving conditions; used a fast-running model (FRM) to assess engine friction and wear protection. Results showed that lower viscosity oils; especially; 0W-20; significantly reduced frictional losses; enhancing fuel economy. However; lower viscosity also increased contact friction under high power demand; raising durability concerns. A comprehensive evaluation of lubricants performance; offering insights into the trade-offs between fuel economy improvements and potential durability risks. © 2024 The Authors;
D O I：
10.1016/j.rineng.2024.103159
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