An Investigation of Tribological Characteristics of Energy-Conserving Engine Oils Using a Reciprocating Bench Test

2000 ◽  
Author(s):  
Simon C. Tung ◽  
Spyros I. Tseregounis
Keyword(s):  
Tribological Characteristics ◽  
Bench Test ◽  
Engine Oils ◽  
Energy Conserving

Voluminosities of EGR Engine Soot and Carbon Black: A Bench Test for Fresh Engine Oils

2007 ◽  
Vol 50 (4) ◽  
pp. 517-522 ◽  
Author(s):  
E. S. Yamaguchi ◽  
K.-S. Ng ◽  
P. R. Ryason*
Keyword(s):  
Carbon Black ◽  
Bench Test ◽  
Engine Oils

Tribological characteristics of calcium sulfonates as detergents for engine oils

2017 ◽  
Vol 38 (2) ◽  
pp. 115-120
Author(s):  
I. A. Buyanovskii ◽  
V. L. Lashkhi ◽  
V. D. Samusenko ◽  
A. I. Dotsenko
Keyword(s):  
Tribological Characteristics ◽  
Engine Oils

Energy-Conserving Engine Oils — Techniques and Technology

1983 ◽  
Author(s):  
Richard F. Irwin ◽  
Frank Fernandez
Keyword(s):  
Engine Oils ◽  
Energy Conserving

Second Paper: Recent Studies on Rotary-Engine Lubrication

1974 ◽  
Vol 188 (1) ◽  
pp. 295-302
Author(s):  
J. Y. Breau ◽  
B. J. Miller ◽  
P. Möller ◽  
T. W. Rogers
Keyword(s):  
Film Thickness ◽  
Automatic Transmission ◽  
Engine Performance ◽  
Base Stock ◽  
Bench Test ◽  
Test Procedures ◽  
Passenger Car ◽  
Engine Oils ◽  
Rotary Engine ◽  
Engine Wear

Rotary-engine lubrication studies have been conducted on four engines covering the two types of rotary engine now in production. Metallic or carbon-metallic apex seals were used. Results presented have been obtained with 13 different oil formulations, including passenger-car-engine oils corresponding to API SC, SD or SE categories, automatic-transmission fluids of the Dexron II type, and oils for two-stroke engines. Seven different test procedures have been used in these investigations, employing either engine bench test stands or vehicles on chassis dynamometers. Satisfactory rotary-engine performance has been obtained with oils containing from 0 to 1·2 per cent by weight of sulphated ash. The ability of the base stock to provide good film thickness has also been found of benefit in reducing rotary-engine wear. Passenger-car-engine oils can be excellent rotary-engine lubricants and those oils corresponding to the latest API SE classification exhibit better performance than previous API SC or SD oils. Automatic-transmission fluids have also given promising results.

Cold Pumpability Characteristics of Engine Oils Predicted by a Bench Test

1974 ◽  
Author(s):  
C. R. Spohn ◽  
R. M. Stewart
Keyword(s):  
Bench Test ◽  
Engine Oils

Redox Reactions in Lipid Membranes as a Model for Primordial Energy-Conserving Systems

1997 ◽  
Vol 161 ◽  
pp. 437-442
Author(s):  
Salvatore Di Bernardo ◽  
Romana Fato ◽  
Giorgio Lenaz
Keyword(s):  
Experimental Evidence ◽  
Lipid Membranes ◽  
Energy Supply ◽  
Redox Reactions ◽  
Living Systems ◽  
Asymmetric Distribution ◽  
Conservation Of Energy ◽  
Asymmetrical Distribution ◽  
Energy Conserving ◽  
Living Organisms

AbstractOne of the peculiar aspects of living systems is the production and conservation of energy. This aspect is provided by specialized organelles, such as the mitochondria and chloroplasts, in developed living organisms. In primordial systems lacking specialized enzymatic complexes the energy supply was probably bound to the generation and maintenance of an asymmetric distribution of charged molecules in compartmentalized systems. On the basis of experimental evidence, we suggest that lipophilic quinones were involved in the generation of this asymmetrical distribution of charges through vectorial redox reactions across lipid membranes.

A machine for real-time estimation of the tribological characteristics of materials

2020 ◽  
Vol 86 (4) ◽  
pp. 61-65
Author(s):  
M. V. Abramchuk ◽  
R. V. Pechenko ◽  
K. A. Nuzhdin ◽  
V. M. Musalimov
Keyword(s):  
Real Time ◽  
Time Estimation ◽  
Tribological Characteristics ◽  
Continuous Processing ◽  
Friction Machine ◽  
Dynamic Friction Coefficient ◽  
Displacement Sensors ◽  
Frictional Interaction ◽  
Real Time Estimation ◽  
Automated Quality Control

A reciprocating friction machine Tribal-T intended for automated quality control of the rubbing surfaces of tribopairs is described. The distinctive feature of the machine consists in implementation of the forced relative motion due to the frictional interaction of the rubbing surfaces fixed on the drive and conjugate platforms. Continuous processing of the signals from displacement sensors is carried out under conditions of continuous recording of mutual displacements of loaded tribopairs using classical approaches of the theory of automatic control to identify the tribological characteristics. The machine provides consistent visual real time monitoring of the parameters. The MATLAB based computer technologies are actively used in data processing. The calculated tribological characteristics of materials, i.e., the dynamic friction coefficient, damping coefficient and measure of the surface roughness, are presented. The tests revealed that a Tribal-T reciprocating friction machine is effective for real-time study of the aforementioned tribological characteristics of materials and can be used for monitoring of the condition of tribo-nodes of machines and mechanisms.

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