Effect of Low Viscosity Passenger Car Motor Oils on Fuel Economy Engine Tests

Ushioda, Nobuo; Miller, Trevor; Sims, Carrie B.; Parsons, Gary; Sztenderowicz, Mark L.

doi:10.4271/2013-01-2606

Cited by 13 publications

(3 citation statements)

References 18 publications

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“…Theoretically, low-viscosity engine oil should reduce friction loss under mixed-hydrodynamic lubrication conditions. However, the usage of low-viscosity oil can greatly increase the risk of wear and friction for engine components operating in a boundary/mixed lubrication regime [2,5,6]. Maintaining lowfriction and anti-wear performance has thus become an urgent task.…”

Section: Introductionmentioning

confidence: 99%

N-Oleoyl Sarcosine as an Engine Oil Friction Modifier, Part 1: Tribological Performance of NOS+ZDDP Mixture at 100°C

et al. 2022

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The friction coefficient when a Fe surface was lubricated with an additive mixture of N-Oleoyl sarcosine (NOS), a commercial organic friction modifier, and zinc dialkyldithiophosphate (ZDDP) was measured at 100°C using a ball-on-disk tribometer under boundary lubrication conditions. The sliding surface was observed with a 3D laser microscope to investigate the tribo-film morphology and to evaluate the anti-wear performance. The findings indicate that this additive mixture enhanced tribological lubrication behavior in terms of friction-reducing and anti-wear properties under extended sliding cycle conditions. Scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) studies were conducted to analyze the elemental composition of sliding surfaces after tribo-tests and to estimate the friction reduction mechanism of the additive mixture. The EDX results revealed a noticeable decrease in S, suggesting that the NOS suppresses ZDDP decomposition and reduces the adsorption of the decomposition products.

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Section: Introductionmentioning

confidence: 99%

N-Oleoyl Sarcosine as an Engine Oil Friction Modifier, Part 1: Tribological Performance of NOS+ZDDP Mixture at 100°C

et al. 2022

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“…Fuel economy to reduce carbon dioxygen emission from vehicles is a major challenge for the automotive industry in recent years [1,2]. Viscosities of the lubricants below room temperature have recently been lowered to reduce energy losses [3][4][5], and a key way to improve lubricant fuel efficiency of vehicles is by using polymers as viscosity index improvers with thinner base oils [3,6]. The viscosity index of automotive lubricants has an upper limit of around 250 which is a consequence of shear stability and flash point properties of this high viscosity index based lubricants.…”

Section: Introductionmentioning

confidence: 99%

The Development to Control Simultaneously Viscosity and Separation Temperature of a Two Phase Lubricant for Practical Use

et al. 2016

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Fuel economy is a major challenge for the automotive industry. A key way to improve lubricant fuel efficiency is by using polymers as viscosity index improvers to maximise the viscosity index of the lubricants. The viscosity index of automotive lubricants has an upper limit of around 250 because usage of high treat rates can lead to shear stability and flash point issues. To overcome this, the concept of two phase lubricants was reported in former literature but the practical application had not been examined. In this paper, the practical application with an additional ability to control viscosity and separation temperature simultaneously of a two phase lubricant is reported. It is possible to formulate a two phase lubricant with mineral or synthetic base oil and polyalkylene glycol to achieve viscosity index of 500 and keeping the properties of shear stability and flash point on a competitive level as of commercial single phase lubricants. Also, there is little evidence of issues with the lubrication properties. It was shown that additions of Di-isononyl adipate acting as a control element simultaneously control the viscosity and separating temperature of the two phase lubricants.

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“…There are also many tests about the impact of lubricating oil viscosity and friction modifier on fuel economy [4], but the kind of test oil is limited and lack of vehicle test.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on the Impact of Lubricating Oils on Engine Friction and Vehicle Fuel Economy

Yi-min¹,

Wang²,

Wang³

et al. 2015

Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering

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Keywords: energy-conserving engine oil; low viscosity; friction modifier; viscosity index improver; engine friction; vehicle fuel economy Abstract. The engine friction loss and vehicle fuel economy aiming at several kinds of energy-conserving engine oils with different quality standard, viscosity grade, friction modifier, and viscosity index improver were tested in this paper. Experimental results showed that the engine friction loss was reduced and vehicle fuel economy was improved by lowering the viscosity of engine oil and adding high-performance friction modifier and new-type viscosity index improver. Among which, the effect of energy-conserving engine oils Dexos1 5W-20 adding 1% friction modifier and new type viscosity index improver was most significant with 12.45% engine friction reduction rate and 2.33% vehicle fuel economy improvement rate.

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Effect of Low Viscosity Passenger Car Motor Oils on Fuel Economy Engine Tests

Cited by 13 publications

References 18 publications

N-Oleoyl Sarcosine as an Engine Oil Friction Modifier, Part 1: Tribological Performance of NOS+ZDDP Mixture at 100°C

N-Oleoyl Sarcosine as an Engine Oil Friction Modifier, Part 1: Tribological Performance of NOS+ZDDP Mixture at 100°C

The Development to Control Simultaneously Viscosity and Separation Temperature of a Two Phase Lubricant for Practical Use

Experimental Research on the Impact of Lubricating Oils on Engine Friction and Vehicle Fuel Economy

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