A New Challenge for High Performance Two-Cycle Engine Oils, Part-IV: Biodegradable Engine Oil with Low-Smoke Performance

2003 ◽  
Author(s):  
Mitsuaki Ishimaru ◽  
Tetsuo Okawa ◽  
Mineo Kagaya
Keyword(s):  
High Performance ◽  
Engine Oil ◽  
Engine Oils

Tailoring Oils to Engines

1984 ◽  
Vol 198 (1) ◽  
pp. 69-75 ◽  
Author(s):  
C C Colyer
Keyword(s):  
Performance Optimization ◽  
High Performance ◽  
Specific Area ◽  
Engine Oil ◽  
Chemical Additives ◽  
Engine Oils ◽  
Automotive Engines ◽  
Oil Formulation ◽  
Oil Performance ◽  
Petroleum Companies

Today's high performance automotive engines would not operate effectively without the progressive advancements in engine oil formulation technology. A communications network between the engine builders, additive suppliers, petroleum companies, and consumers is essential in the continuous tailoring of engine oils to meet new engine requirements. The SAE/ASTM/API tripartite Engine oil performance and engine service classification system is recognized worldwide as a base for adding further requirements for various geographic areas. Attempts to develop one worldwide specification system have been thwarted by lack of unified agreement within, as well as between, the pertinent geographic areas of the world. In addition, worldwide specifications would not provide cost/performance optimization for areas not requiring each of the included engine oil parameters, and oil formulation compromises required to meet total world requirements could weaken oil performance in a specific area. As new engine designs place additional burdens on engine oils, the role of chemical additives to meet these demands increases. Revised engine oil evaluation tests are an associated need. Continued efforts toward elusive worldwide engine oil specifications will provide benefits by consolidating the number of expensive laboratory engine tests required to define engine oil performance.

Tribological Dependence of the High-Performance Ferrous-Based Coating on Different Coating Counterparts in Engine Oil

2016 ◽  
Vol 59 (3) ◽  
pp. 399-407 ◽  
Author(s):  
Yongxin Wang ◽  
Bin Wang ◽  
Jinlong Li ◽  
Fuqiang Ma ◽  
Qunji Xue
Keyword(s):  
High Performance ◽  
Engine Oil

New Algorithm for Engine Oil Identification by Infrared Spectrum

2014 ◽  
Vol 1081 ◽  
pp. 353-357
Author(s):  
Yong Gang Shi ◽  
Hao Wen ◽  
Hai Feng Gong ◽  
Zi Cun Li ◽  
Bin Su ◽  
...  
Keyword(s):  
Infrared Spectrum ◽  
Ir Spectra ◽  
Quality Index ◽  
Experimental Results ◽  
Engine Oil ◽  
Evaluation Index ◽  
Weight Factor ◽  
Engine Oils ◽  
Composition Characteristics

Based on structure and composition characteristics of engine oil, the new algorithm for its Infrared Spectrum (IR) Identification has been put forward. The Hit Quality Index and Related Hit Quality Index are widely used in Infrared Spectrum Identification recently. The two methods don’t take the importance of the variables into consideration and cannot distinguish the unobvious variation in IR spectra. Therefore the diversity weight factor was introduced into the new algorithm to promote its selectivity. The experimental results had shown that the new spectrum similarity evaluation index could distinguish the unobvious spectrum variations and to improve the infrared spectrum identification capability of engine oils.

scholarly journals Study on the Prospects of Use the Group D Engine Oil in Locomotive Diesel Engines

2018 ◽  
Vol 7 (4.3) ◽  
pp. 47
Author(s):  
Andrii Кravets ◽  
Andrii Yеvtushenko ◽  
Andrii Pogrebnyak ◽  
Yevhenii Romanovych ◽  
Heorhii Afanasov
Keyword(s):  
Diesel Engines ◽  
Wear Test ◽  
Engine Oil ◽  
Test Machine ◽  
Group V ◽  
Engine Oils ◽  
Oil Fuel ◽  
Continuous Use ◽  
Group D ◽  
Locomotive Diesel

It was suggested to use group D engine oil with advanced properties instead of group V and G engine oils, which are used in locomotive diesel engines today, to improve the performance of the Ukrainian locomotive fleet of railways.A series of comparative laboratory studies of these oil groups was conducted to substantiate this suggestion which proved better lubrication and tribological performance of group D engine oil and allowed its performance tests.Tests conducted on diesel 5D49 for mileage of more then 100,000 km have demonstrated the advantages of group D oils, such as more stable viscosity, neutralizing ,washing and other properties. Studies on the four-ball wear test machine proved better anti-wear, anti-scoring and anti-friction properties of group D engine oil, which appear even after the continuous use of oils in locomotive diesels. Decrease in burning loss of engine oil was recorded, resulting in the decrease of oil fuel consumption for group D by 30-60% vs. the group G oil.According to the results of performance tests, group D engine oil has been recommended for the use in 5D49 locomotive diesels and some advice on its future implementation have been provided.  

Heat Transfer Properties of Engine Oils

2005 ◽  
Author(s):  
Scott Wrenick ◽  
Paul Sutor ◽  
Harold Pangilinan ◽  
Ernest E. Schwarz
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Diesel Engine ◽  
Specific Heat ◽  
Mineral Oil ◽  
Engine Oil ◽  
Group V ◽  
Engine Oils ◽  
Heat Transfer Fluids ◽  
Transfer Properties

The thermal properties of engine oil are important traits affecting the ability of the oil to transfer heat from the engine. The larger the thermal conductivity and specific heat, the more efficiently the oil will transfer heat. In this work, we measured the thermal conductivity and specific heat of a conventional mineral oil-based diesel engine lubricant and a Group V-based LHR diesel engine lubricant as a function of temperature. We also measured the specific heat of ethylene glycol. The measured values are compared with manufacturers’ data for typical heat transfer fluids. The Group V-based engine oil had a higher thermal conductivity and slightly lower specific heat than the mineral oil-based engine oil. Both engine oils had values comparable to high-temperature heat transfer fluids.

Improving the Performance of Gas Engine Oils: A New Generation of Geo-Specific Additive Systems

2003 ◽  
Author(s):  
Laurent Chambard ◽  
John Smythe
Keyword(s):  
High Performance ◽  
Additive Technologies ◽  
Performance Limits ◽  
Base Oil ◽  
Gas Engine ◽  
Engine Oils ◽  
Base Oils ◽  
Beaten Track ◽  
Excellent Control ◽  
New Generation

Additive technologies able to successfully lubricate gas engines have been available for many years, but in recent years the acceleration of both commercial and technical demands placed on gas engine lubricants has highlighted the performance limits of traditional additive solutions. One of these limits is the ability to reach long and very long oil drains, required by an increasing number of operators. Since traditional additive chemistries on conventional base oil systems have reached their limits in that respect, focus has been increasingly placed on using higher performance base oils so that longer oil drains can be reached. However, traditional additive chemistries have often proved to struggle in these higher performance base oils, particularly in the aspect of deposit control — demonstrating that a new generation of additive systems for the formulation of gas engine oils is needed. The authors present one such generation of additive systems, developed around off-the-beaten-track detergent technology; providing superior control of oxidation and deposits. Such additive systems can be used either in conventional base oil systems with improved drain interval, or in high performance base oil systems with very long drain interval and excellent control of deposits. Besides the description of the chemistry involved, the authors also present a methodology of performance evaluation in the laboratory, and compare this methodology with the performance perceived in the field.

scholarly journals Micro-Pitting and Wear Assessment of PAO vs Mineral-Based Engine Oil Operating under Mixed Lubrication Conditions: Effects of Lambda, Roughness Lay and Sliding Direction

Lubricants ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 42 ◽  
Author(s):  
Aleks Vrček ◽  
Tobias Hultqvist ◽  
Yannick Baubet ◽  
Marcus Björling ◽  
Pär Marklund ◽  
...  
Keyword(s):  
Bearing Steel ◽  
Mixed Lubrication ◽  
Operating Conditions ◽  
Engine Oil ◽  
Engine Oils ◽  
Rolling Contacts ◽  
Steel Surfaces ◽  
Wear Damage ◽  
Lubrication Conditions ◽  
Ball On Disc

Under certain operating conditions, rolling contacts have been shown to experience some challenges when lubricated with engine oils containing zinc dialkyldithophosphate (ZDDP) anti-wear additive. In order to better understand the main damage mechanisms during various operating conditions, further studies are needed. This article studies micro-pitting and wear damages of bearing steel surfaces under mixed lubrication conditions in a ball-on-disc setup, lubricated with different engine oils. Based on the results, micro-pitting and wear damage is shown to be highly case-dependent. In general, PAO-based engine oil tends to eliminate micro-pitting damage compared to mineral-based engine oil at less severe lubricating conditions. Moreover, a critical lambda was found for both oils, where the highest micro-pitting damage was observed.

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