Design Optimization of Lubrication System for a Four-Cylinder Diesel Engine

Ramkumar, J; Ranjit, George; Sarath, Vijayabaskaran; Vikraman, V. Karuppasamy; Suresh, B.; Babu, Namani Prasad; Malekar, Amit

doi:10.1007/978-981-15-5947-1_12

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…In complete system analysis, recent works have evaluated the use of a simulation model's prediction to find a general gain in power loss in test bench procedures. 17 However, local phenomena studies for lubricants include friction, shear, cavitation, and heat transfer. Most of these studies analyse the problem with a standalone model to minimize the uncertainties, [18][19][20][21] as in experimental procedures with tribometers and rheometers.…”

Section: Introduction and Scopementioning

confidence: 99%

Friction assessment of ultralow viscosity lubricant formulations based on a validated elastohydrodynamic simulation

Blanco-Rodríguez

Porteiro

López-Campos

et al. 2023

International Journal of Engine Research

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High-performance engines are highly optimized machines; therefore, any identification of potential improvement requires a detailed study to assess different performance scenarios, working fluids and engine configurations. Simulation tools are among the best ways to study all possible options. In this framework, a validated elastohydrodynamic (EHD) simulation model of the connecting rod journal bearing is used to assess the performance of different lubricant formulations in mixed lubrication scenarios. To simulate a realistic scenario, a finite element analysis (FEA) is performed, where the assembly of connecting rod and shaft supports are modelled with finite element models (FEM) to account for elastic deformations on journal bearings. Furthermore, a set of oil properties is measured and collected to import into GT-Suite commercial software. This set enables us to consider the dependence of variables such as viscosity, density, specific heat transfer, and coefficient of friction on the shear rate, pressure, temperature, and air solution. Moreover, a friction assessment methodology is presented to choose the best lubricating oil for severe working conditions. This test method accounts for several factors: tribology, rheology, wear, and lubrication regime. The results are presented for three ultralow viscosity lubricants and the reference oil from validation. This assessment gives a complete comparison of lubricants performance, where lubrication regime and tribological losses are key factors to select the best candidate.

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Section: Introduction and Scopementioning

confidence: 99%

Friction assessment of ultralow viscosity lubricant formulations based on a validated elastohydrodynamic simulation

Blanco-Rodríguez

Porteiro

López-Campos

et al. 2023

International Journal of Engine Research

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show abstract

“…Regarding the reduction in friction loss, advanced low-viscosity engine oils, low-friction coatings, and surface texturing are the greatest potential techniques for reducing the friction of tribological components in reciprocating engines [19,20]. Meanwhile, the importance of effective variable discharge oil pumps [21,22] is increasing, with flexible adaption of the delivery of lubricant flow to meet engines' practical demand, hence avoiding unnecessary pumping power and fuel consumption.…”

Section: Introductionmentioning

confidence: 99%

A Review of Energy Loss Reduction Technologies for Internal Combustion Engines to Improve Brake Thermal Efficiency

Wang

Shuai

et al. 2021

Energies

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Today, the problem of energy shortage and climate change has urgently motivated the development of research engaged in improving the fuel efficiency of internal combustion engines (ICEs). Although many constructive alternatives—including battery electric vehicles (BEVs) and low-carbon fuels such as biofuels or hydrogen—are being put forward, they are starting from a very low base, and still face significant barriers. Nevertheless, 85–90% of transport energy is still expected to come from combustion engines powered by conventional liquid fuels even by 2040. Therefore, intensive passion for the improvement of engine thermal efficiency and decreasing energy loss has driven the development of reliable approaches and modelling to fully understand the underlying mechanisms. In this paper, literature surveys are presented that investigate the relative advantages of technologies mainly focused on minimizing energy loss in engine assemblies, including pistons and rings, bearings and valves, water and oil pumps, and cooling systems. Implementations of energy loss reduction concepts in advanced engines are also evaluated against expectations of meeting greenhouse gas (GHG) emissions compliance in the years to come.

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Design Optimization of Lubrication System for a Four-Cylinder Diesel Engine

Cited by 2 publications

References 14 publications

Friction assessment of ultralow viscosity lubricant formulations based on a validated elastohydrodynamic simulation

Friction assessment of ultralow viscosity lubricant formulations based on a validated elastohydrodynamic simulation

A Review of Energy Loss Reduction Technologies for Internal Combustion Engines to Improve Brake Thermal Efficiency

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