A Laboratory Engine Test Study of Motor Oil Flow Properties in Winter Service

1984 ◽  
Author(s):  
R. S. Johnson
Keyword(s):  
Engine Test ◽  
Motor Oil ◽  
Flow Properties ◽  
Test Study ◽  
Oil Flow

scholarly journals Effect of bio-based flow improver on the microscopic and low-temperature flow properties of waxy crude oil

2021 ◽  
Vol 11 (2) ◽  
pp. 711-724
Author(s):  
William Iheanyi Eke ◽  
Sampson Kofi Kyei ◽  
Joseph Ajienka ◽  
Onyewuchi Akaranta
Keyword(s):  
Fractal Dimension ◽  
Aspect Ratio ◽  
Crude Oil ◽  
Flow Properties ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Feret Diameter ◽  
Oil Flow ◽  
Flow Improver ◽  
Wax Crystals

AbstractWax formation creates flow assurance problems in the production and transportation of waxy crude oil. Flow improvers are added to waxy crude in order to reduce handling cost. Bio-based flow improvers derived from cheap renewable resources are attractive as cost-effective, eco-friendly alternatives to the conventional additives. Natural cashew nut shell liquid extracted from waste biomass (Anacardium occidentale shells) was derivatized and applied as flow improver for waxy crude oil. Effect of the additive on wax formation in crude oil was studied by cross-polarized microscopy, while the change in oil flow properties was evaluated using a rotational coaxial cylinder viscometer. Micrographs of the waxy crude were processed and analyzed with image J software. The microscopic properties of the wax crystals were characterized using Feret diameter, crystal area, aspect ratio, circularity, solidity and boundary fractal dimension. The pour point of doped crude oil was depressed by − 18 °C and the wax area fraction reduced by 40% due to wax inhibitive effect of the additive. The presence of the additive resulted in evolution of smaller, rounder and more regular wax crystals with smoother and more even surfaces indicated by reduction in the Feret diameter, aspect ratio and boundary fractal dimension of wax crystals in doped oil, and an increase in crystal circularity and solidity. The shear stress and viscosity of doped oil were reduced by 86.8% and 85.0%, respectively. The flow improvement effect of the CNSL derivative is linked to its effect on morphology and microstructure of wax crystals in the crude oil.

scholarly journals Acetylation Modification of Waste Polystyrene and Its Use as a Crude Oil Flow Improver

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2505
Author(s):  
Wangyuan Zhang ◽  
Michal Slaný ◽  
Jie Zhang ◽  
Yifan Liu ◽  
Yunlei Zang ◽  
...  
Keyword(s):  
Crude Oil ◽  
Crystal Morphology ◽  
Electronic Devices ◽  
Flow Properties ◽  
Flow Capacity ◽  
Waste Polystyrene ◽  
Wide Range ◽  
Oil Flow ◽  
Modified Polystyrene ◽  
Flow Improver

Polystyrene is used in a wide range of applications in our lives, from machine housings to plastic cups and miniature electronic devices. When polystyrene is used, a large amount of waste is produced, which can cause pollution to the environment and even harm biological and human health. Due to its low bulk density (especially the foamed type) and low residual value, polystyrene cannot be easily recycled. Often waste polystyrene is difficult to recycle. In this paper, waste polystyrene has been modified by using acetic anhydride which caused a crude oil flow improver. The results showed that modified polystyrene improves the flow properties of the crude oil, reducing the viscosity and the pour point of the crude oil by up to 84.6% and 8.8 °C, respectively. Based on the study of the paraffin crystal morphology, the mechanism of improving the flow capacity of crude oil by modified polystyrene was proposed and analyzed.

scholarly journals Changes of engine oil flow properties during its life cycle

2010 ◽  
Vol 58 (4) ◽  
pp. 203-208 ◽  
Author(s):  
Libor Severa ◽  
Miroslav Havlíček ◽  
Jiří Čupera
Keyword(s):  
Kinematic Viscosity ◽  
Arrhenius Equation ◽  
Flow Behavior ◽  
Engine Oil ◽  
Flow Properties ◽  
Used Oil ◽  
Concentric Cylinders ◽  
Oil Flow ◽  
Gaussian Fit ◽  
Motorcycle Engine

The work is focused on quantification of influence of operation on flow properties of motorcycle engine oil. Three different kinds of synthetic engine oil (MOTUL) were tested, namely unused oil, run-in oil (650 km after engine reboring) and regular engine oil (6200 km of motorcycle operation). The samples were frozen to below zero temperatures and kinematic viscosity was continuously monitored in the range of −5 °C and +115 °C. Consequently, the kinematic viscosity at reference temperatures of 0, 40 and 100 °C was compared. Viscosity was measured by digital viscometer with concentric cylinders measuring geometry. The biggest difference occurred in case of lower temperatures where e.g. at 0 °C decrease to 29 % and 43 % of its original value was detected for used oil and run-in oil respectively. Flow behavior was modeled using several mathematical models –Arrhenius equation, exponential, and Gaussian equation. The best match between experimental and computed data was received in case of Gaussian fit with R2 = 0.997 and 0.992 for run-in and used oil, respectively. The models are ge­ne­ral­ly usable for description of rheological behavior of given engine oil.

Physical and Hydrologic-Flow Properties of Fractures Las Vegas, Nevada—Zion Canyon, Utah—Grand Canyon, Arizona—Yucca Mountain, Nevada July 20–24, 1989

10.1029/ft385 ◽  
1989 ◽  
Author(s):  
Christopher C. Barton ◽  
Paul A. Hsieh ◽  
Jacques Angelier ◽  
Francoise Bergerat ◽  
Catherine Bouroz ◽  
...  
Keyword(s):  
Las Vegas ◽  
Grand Canyon ◽  
Yucca Mountain ◽  
Flow Properties

Development of thickened semi-synthetic engine oil M-5z / 20 AERO for four-stroke gasoline engines aircraft piston of unmanned aerial vehicles (UAVs)

2020 ◽  
Vol 06 ◽  
pp. 44-47
Author(s):  
A.A. Moykin ◽  
◽  
A.S. Medzhibovsky ◽  
S.A. Kriushin ◽  
M.V. Seleznev ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Engine Oil ◽  
Motor Oil ◽  
Gasoline Engines ◽  
State Research Institute ◽  
Technical Requirements ◽  
Aerial Vehicles ◽  
State Research ◽  
Industrial Batch ◽  
The Russian Federation

Nowadays, the creation of remotely-piloted aerial vehicles for various purposes is regarded as one of the most relevant and promising trends of aircraft development. FAU "25 State Research Institute of Chemmotology of the Ministry of Defense of the Russian Federation" have studied the operation features of aircraft piston engines and developed technical requirements for motor oil for piston four-stroke UAV engines, as well as a new engine oil M-5z/20 AERO in cooperation with NPP KVALITET, LLC. Based on the complex of qualification tests, the stated operational properties of the experimental-industrial batch of M-5z/20 AERO oil are generally confirmed.

Effect of hydrodynamic impact and cavitation on oil flow characteristics

2019 ◽  
pp. 46-50
Author(s):  
V.N. Petrov ◽  
◽  
F.M. Galimov ◽  
L.A. Akhmetzyanova ◽  
S.V. Petrov ◽  
...  
Keyword(s):  
Flow Characteristics ◽  
Hydrodynamic Impact ◽  
Oil Flow

Blood Cell Separation Device Using Serially Connected Membrane Filters for Adapting to Blood Flow Properties

2009 ◽  
Vol 129 (11) ◽  
pp. 380-386 ◽  
Author(s):  
Taizo Kobayashi ◽  
Daiki Kato ◽  
Hiroyuki Koga ◽  
Kenichi Morimoto ◽  
Makoto Fukuda ◽  
...  
Keyword(s):  
Blood Flow ◽  
Blood Cell ◽  
Cell Separation ◽  
Flow Properties ◽  
Separation Device ◽  
Membrane Filters
Sign in / Sign up

Export Citation Format

Share Document