Download or read book Development of a High Shear Rate Capillary Viscometer for Engine Oils written by Samuel W. Rein and published by . This book was released on 1980 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of a High Shear Rate Capillary Viscometer for Engine Oils written by DL. Alexander and published by . This book was released on 1980 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high shear rate capillary viscometer has been developed. It is suitable for measuring the viscosity of engine oils at shear rates of 105 to 106 s-1 and at temperatures to 150°C, conditions which are within the range experienced by oils in automobile engines. It has proven useful for evaluating the total shear stability of VI-improved oils and is also being used for interpreting laboratory engine friction testing.

Download or read book High temperature High shear HTHS Oil Viscosity written by James A. Spearot and published by ASTM International. This book was released on 1989 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of an ASTM Standard Test Method for Measuring Engine Oil Viscosity Using Capillary Viscometers at High Temperature and High Shear Rates written by JM. Demko and published by . This book was released on 1989 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of a standard ASTM test method for measuring engine oil viscosity at high temperature (150°C) and high rate of shear (106 S-1) is discussed. A review is provided of the ASTM interlaboratory program that incorporated several different viscometer designs to evaluate a single generalized procedure for viscosity determination. A statistical analysis for ASTM repeatability and reproducibility resulted in a level of precision that approached that of rotational high-temperature, high-shear viscometers. Excellent correlation between capillary viscometers and rotational instruments is also demonstrated. The method is applicable to existing high-temperature, high-shear viscosity requirements in the European Committee of Common Market Automobile Constructors (CCMC) specification as well as individual high-temperature, high-shear specifications established by original equipment manufacturers.

Download or read book The Relationship Between Engine Oil Viscosity and Engine Performance written by Ross M. Stewart and published by ASTM International. This book was released on 1977 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relationship Between Engine Oil Viscosity and Engine Performance Parts 5 6 Papers Pres at Meeting Held Detroit Michigan February 25 29 1980 written by and published by ASTM International. This book was released on with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Standard Test Method for Measuring Apparent Viscosity by Capillary Viscometer at High Temperature and High shear Rates written by ASTM Committee D-2 on Petroleum Products and Lubricants. Subcommittee D02.07 on Flow Properties and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Relationship Between Engine Oil Viscosity and Engine Performance Part II written by and published by ASTM International. This book was released on 1977 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of ASTM Standard Test Methods for Measuring Engine Oil Viscosity Using Rotational Viscometers at High Temperature and High Shear Rates written by RB. Rhodes and published by . This book was released on 1989 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two ASTM standards have been developed for the measurement of engine oil viscosity at high temperature (150°C) and high shear rate (106 s-1) using rotational viscometers. Both methods resulted from significant international participation at the working group level. One test method resulted from work done primarily within ASTM Committee D-2, Subcommittee 7, using the tapered bearing simulator. The other resulted from work done within the Co-ordinating European Council (CEC) using the Ravenfield viscometer, herein called the tapered plug viscometer. The chronological development of each standard is reviewed, and test method and precision are compared. Expansion of measurement capabilities are discussed with regard to the study of lubricant rheology and engine performance.

Download or read book The Relationship Between Engine Oil Viscosity and Engine Performance written by and published by ASTM International. This book was released on 1978 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposium on non Newtonian Viscometry written by and published by ASTM International. This book was released on 1962 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Relationship Between Engine Oil Viscosity and Engine Performance written by and published by ASTM International. This book was released on 1977 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluid Film Lubrication Osborne Reynolds Centenary written by D. Berthe and published by Elsevier. This book was released on 1987-10-01 with total page 707 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thirteenth Leeds-Lyon Tribology Symposium was devoted to the topic of Fluid Film Lubrication in celebration of the centenary of the publication of the classical paper by Professor Osborne Reynolds in which he identified the mechanism of hydrodynamic lubrication. These proceedings contain more than seventy papers, written by authors from all over the world, covering the entire spectrum of fluid film lubrication. Of particular interest is the detailed consideration of a wide range of machine elements - bearings, seals, cams, rolling elements, as well as the in-depth, state-of-the-art, analytical contributions.

Download or read book Proprietes Rheologiques Des Lubrifiants written by Jean Briant and published by Editions TECHNIP. This book was released on 1989 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of an Ultrasonic Sensing Technique to Measure Lubricant Viscosity in Engine Journal Bearing In Situ written by Michele Schirru and published by Springer. This book was released on 2017-02-21 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a novel ultrasonic instrument for non-invasive and in-situ characterization of journal bearing lubricant viscosity. In particular, the application to journal bearings is described by non-invasively measuring the viscosity and localized power losses throughout operation. This ultrasonic viscometer is based on the reflection of polarized shear waves from a thin resonating coating layer to increase the measurement sensitivity, in comparison to conventional ultrasonic methods. This instrument allows for a full engine oil viscoelastic characterization in-situ. The book investigates the effects of temperature, pressure and shear rate, and describes in detail the ultrasonic setup and method. Further, it demonstrates that the same technique can be applied similarly to monitor the lubrication of other engine components. As such, it offers a unique instrument that can drive the research of oil formulations to improve engine performance and fulfill the requirements of international fuel economy regulations.

Download or read book The Relationship Between Engine Oil Viscosity and Engine Performance Part III written by and published by . This book was released on 1978 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Relating High Temperature High Shear Rate Viscosity to Engine Operation written by JA. Spearot and published by . This book was released on 1989 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The argument over which values of oil viscosity best correlate with measures of engine operation has gone on for many years. Over a decade ago (1977), the membership of the Engine Oil Subcommittee of the Society of Automotive Engineers (SAE) Fuels and Lubricants Committee (now the Fuels and Lubricants Division) agreed that there were enough data to justify asking the appropriate ASTM subcommittee (D02.07) to develop methods for determining values of high-temperature, high-shear-rate (HTHS) oil viscosity and to relate them to engine operation. In 1984, an ASTM task force finished reviewing the available literature and composed a report that summarized the effects of viscosity on bearing oil film thickness, engine wear, engine friction, and fuel economy (ASTM DS-62). This paper reviews the findings of that report and updates them in light of recent studies. The case for incorporating HTHS viscosity specifications into the Engine Oil Viscosity Classification, SAE J300, is presently stronger than ever. Suggestions are offered on how this incorporation might be accomplished and on what future directions ASTM research on HTHS viscosity should take.