Effect of Physical Characteristics of Lubricating Oils on Emissions, Fuel Economy and Oil Consumption in a Light Duty Diesel Engine

Manni, M.; Gommellini, C.; Sabbioni, G.

doi:10.4271/952552

Cited by 17 publications

(6 citation statements)

References 3 publications

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“…The average reduction in fuel consumption in test rig studies ranged between 1% and 4% depending on different factors such as engine operating points, oil formulations used (specially viscosity grades considered and additive packages) and oil temperatures, etc. [11], [12]. All this knowledge resulted in a consistent trend on reducing the average viscosity of lubricants, as seen in Covitch et al [13].…”

Section: Compressed Natural Gasmentioning

confidence: 64%

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: Compressed Natural Gasmentioning

confidence: 64%

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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“…For this reason the literature is heavily populated by OEMs reporting the energy savings they have made through successfully employing low viscosity lubricants with heavy additive packages, albeit with some interesting side effects. In the early 1990's, for example, a study reported significant energy savings by employing low viscosity engine oils in urban running conditions, resulting in limited fuel consumption and reduced C02 emissions (Manni, Gommellini et al 1995). However, the paper also reports an important consequence of running low viscosity oil in a vehicle equipped with standard electronic engine configuration unit; an increase hydrocarbon and carbon monoxide emissions, primarily due to the inherent increased volatility of low viscosity hydrocarbon base stocks.…”

Section: Lubricant Formulations For Fuel Economymentioning

confidence: 99%

In-Cylinder Fuel and Lubricant Effects on Gasoline Engine Friction

Smith

Priest

Taylor

et al. 2005

World Tribology Congress III, Volume 2

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Reducing engine friction remains an important goal of the automotive industry. Reduced engine friction has been partly achieved by using low viscosity, friction modified lubricants, reducing the energy required to shear the fluid in the hydrodynamic lubrication regime (which is the primary lubrication mode in the piston assembly). It has long been understood that the piston ring / cylinder liner interface is responsible for a significant proportion of engine friction and can significantly influence the fuel consumption of an engine. This paper describes research conducted to develop understanding of both the interfacial relationship of the compression ring and cylinder liner and the synergistic relationship of fuel and lubricant at the top ring zone of a single cylinder gasoline engine. A portfolio of engine testing, laboratory work and computer simulation has been conducted.

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“…Manni et al [111] studied the effects of lubricating oil characteristics on emissions, fuel economy and oil consumption for light-duty diesel engines. Measuring energy savings is very challenging for heavy-duty applications.…”

Section: Energy-effi Cient Lubricantsmentioning

confidence: 99%