An Experimental Evaluation of the Impact of Ultra Low Viscosity Engine Oils on Fuel Economy and CO<sub>2</sub> Emissions

Manni, M.; Florio, Salvatore

doi:10.4271/2013-01-2566

Cited by 20 publications

(3 citation statements)

References 4 publications

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“…In the first decade of this century very low viscosity oils appeared, and it is common in the Japanese market to find cars that use SAE 5W20. According to that, SAE has been redefining its Engine Oil Viscosity Classification [36], in order to meet this trend including in the last two years three new SAE grades with lower viscosity, and allowing some engine manufacturers, especially Asians, the implementation of these regulations to meet fuel consumption restrictions [37], [38].…”

Section: Tribology and Wear Related To Low-viscosity Oilsmentioning

confidence: 99%

Low viscosity engine oils: Study of wear effects and oil key parameters in a heavy duty engine fleet test

Macián

Tormos

Ruíz

et al. 2016

Tribology International

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Low viscosity engine oils (LVO) are considered key contributor for improving fuel economy in internal combustion engines (ICE). Attending that the use of LVO could imply a variation in tribological states found in ICE, this work's aim is to test LVO in real fleet, with emphasis on engine wear and oil key performance indicators. This test comprised 39 buses, two engine technologies and four different lubricants. For each sample, the elemental composition of the wear debris by ICP-AES and HTHS viscosity of the oil were measured among other properties. The results showed that, with a correct oil formulation, there is no significant difference when using LVO in terms of engine wear, HTHS viscosity variation and oil consumption.

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Section: Tribology and Wear Related To Low-viscosity Oilsmentioning

confidence: 99%

Low viscosity engine oils: Study of wear effects and oil key parameters in a heavy duty engine fleet test

Macián

Tormos

Ruíz

et al. 2016

Tribology International

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“…are widely used. Manni and Florio 23 studied the relationship between HTHS viscosity of engine oil and fuel economy using chassis power test bench. The results showed that HTHS viscosity had a significant impact on vehicle fuel economy in statistics under NEDC working condition.…”

Section: Introductionmentioning

confidence: 99%

Development of turbocharged engine bench test adapted to multiple driving cycles for lubricants fuel economy

Ye,

Yimin,

Xiangkui

2023

International Journal of Engine Research

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Aimed to more truly and stably measure the fuel economy of a vehicle under different driving cycles, simultaneously reduce prime cost and short experimental period. An engine fuel economy test method and bench which could adapt to multiple cycle conditions was developed. The fuel economy test of a certain SUV under NEDC/WLTC was carried out, and the transient operating parameters of the engine were collected. The engine fuel economy test bench was established and accurately controlled according to transient parameters. The FEI of five different formulations of engine oils was tested. The results indicate that the actual bench parameters are in good agreement with the target transient parameters. Multiple FC measurements of baseline oil and multiple FEI measurements of high reference oil show that the engine bench has good repeatability. The data fluctuation degree of bench test is obviously smaller than that of vehicle test. The correlation coefficients of comprehensive FEI between bench test and vehicle test are 95.25% (NEDC) and 96.39% (WLTC). It means that the bench test can completely replace the vehicle test for fuel economy analysis. The FEI of No.3 oil which has the best fuel improvement are 1.888% (NEDC) and 1.248% (WLTC) respectively. Compared with the vehicle test, the engine bench testing can save 75% of the time. The fuel economy bench and test methods are also suitable for the verification of fuel economy improvement of other engine optimization measures under different driving cycles. The development period of engine technologies can be shortened, and the test cost can be reduced.

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“…Thereby, in recent years different tests have been performed with engine oils with improved bases and additive packages in order to validate fuel economy and derived effects. There are different researches carried out in test rig 8,[10][11][12] and in real fleet 13,14 .…”

Section: Introductionmentioning

confidence: 99%

Assessment of low-viscosity oil performance and degradation in a heavy duty engine real-world fleet test

Macián

Tormos

Mezquita

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part J:

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Low viscosity engine oils (LVO) are considered one of the most interesting solutions for improving fuel economy in internal combustion engines (ICE). There are different studies involving LVO and ICE, but currently limited data are available regarding "real-world" performance of LVO in a real service fleet. Included in a broadest study related with fuel consumption saving effects and performance of LVO in a real service fleet, the aim of this work is to present the results obtained in terms of comparative oil performance.So, on this test, a comparative analysis using 39 buses was performed, based on a deep and extensive oil analysis program to assess those aspects above mentioned. Two engine technologies (Diesel and CNG) were considered and four different lubricants, two of them LVO and other two used as a reference baseline. The test duration comprised two oil drain intervals of 30000 km each one, totalizing more than 2 million of kilometers accumulated.Results have shown that LVO presented an excellent performance along the oil drain interval (ODI), even improving some characteristics of the baseline oils with higher viscosity values. Results have shown that oil degradation is more dependent on engine technology, but in any case presented a penalization in terms of ODI reduction, a key indicator for end-users related with maintenance costs. In the case of CNG engines, higher oil degradation in terms of oil oxidation and nitration was observed.

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An Experimental Evaluation of the Impact of Ultra Low Viscosity Engine Oils on Fuel Economy and CO₂ Emissions

Cited by 20 publications

References 4 publications

Low viscosity engine oils: Study of wear effects and oil key parameters in a heavy duty engine fleet test

Low viscosity engine oils: Study of wear effects and oil key parameters in a heavy duty engine fleet test

Development of turbocharged engine bench test adapted to multiple driving cycles for lubricants fuel economy

Assessment of low-viscosity oil performance and degradation in a heavy duty engine real-world fleet test

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An Experimental Evaluation of the Impact of Ultra Low Viscosity Engine Oils on Fuel Economy and CO2 Emissions

Cited by 20 publications

References 4 publications

Low viscosity engine oils: Study of wear effects and oil key parameters in a heavy duty engine fleet test

Low viscosity engine oils: Study of wear effects and oil key parameters in a heavy duty engine fleet test

Development of turbocharged engine bench test adapted to multiple driving cycles for lubricants fuel economy

Assessment of low-viscosity oil performance and degradation in a heavy duty engine real-world fleet test

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An Experimental Evaluation of the Impact of Ultra Low Viscosity Engine Oils on Fuel Economy and CO₂ Emissions