Cleaner Crankcases with Blowby Diversion

Quillian, R. D.; Meckel, Nelson T.; Moffitt, J. V.

doi:10.4271/640804

Cited by 18 publications

(3 citation statements)

References 2 publications

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“…Engine lubricants are also affected by this blow-by, due to partially un-combusted air-fuel mixture passing into the crankcase. This can cause a decrease in oil longevity and an increase in engine wear [23]. Adding soot to the lubricant will alter the oil's viscosity significantly, thus increasing the frictional losses in the engine.…”

Section: Engine Experiments Detailsmentioning

confidence: 99%

Performance and Combustion Characteristics Analysis of Multi-Cylinder CI Engine Using Essential Oil Blends

et al. 2018

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Essential oils are derived from not-fatty parts of plants and are mostly used in aromatherapy, as well as cosmetics and perfume production. The essential oils market is growing rapidly due to their claimed health benefits. However, because only therapeutic grade oil is required in the medicinal sector, there is a substantial low-value waste stream of essential oils that can be used in the transportation and agricultural sectors. This study investigated the influence of orange, eucalyptus, and tea tree oil on engine performance and combustion characteristics of a multi-cylinder compression ignition engine. Orange, eucalyptus, and tea tree oil were blended with diesel at 10% by volume. For benchmarking, neat diesel and 10% waste cooking biodiesel-diesel blend were also tested. The selected fuels were used to conduct engine test runs with a constant engine speed (1500 RPM (revolutions per minute)) at four loads. As the load increased, frictional power losses decreased for all of the fuel samples and thus mechanical efficiency increased. At higher loads (75% and 100%), only orange oil-diesel blends produced comparable power to diesel and waste cooking biodiesel-diesel blends. Fuel consumption (brake and indicated) for the essential oil-diesel blends was higher when compared to base diesel and waste cooking biodiesel-diesel blends. Thermal efficiency for the essential oil-diesel blends was comparable to base diesel and waste cooking biodiesel-diesel blends. At higher loads, blow-by was lower for essential oil blends as compared to base diesel and waste cooking biodiesel-diesel blends. At 50% and 100% load, peak pressure was lower for all of the essential oil-diesel blends when compared to base diesel and waste cooking biodiesel-diesel blends. From the heat release rate curve, the essential oil-diesel blends ignition delay times were longer because the oils have lower cetane values. Overall, the low-value streams of these essential oils were found to be suitable for use in diesel engines at 10% blends by agricultural producers of these oils.

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Section: Engine Experiments Detailsmentioning

confidence: 99%

Performance and Combustion Characteristics Analysis of Multi-Cylinder CI Engine Using Essential Oil Blends

et al. 2018

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“…These deposits, which consist of asphaltenes and additives, characterize the colloidal stability of the oils. A decrease in the concentration of additives worsens the performance properties of the motor oils..In 1955, Anglo-American engineers turned their attention to the greasy black sediments in the lubricating systems of internal combustion engines for the first time [1,2]. Five years later, Soviet scientists also showed an interest in these formations [3].…”

mentioning

confidence: 99%

“…In 1955, Anglo-American engineers turned their attention to the greasy black sediments in the lubricating systems of internal combustion engines for the first time [1,2]. Five years later, Soviet scientists also showed an interest in these formations [3].…”

mentioning

confidence: 99%

Water contamination and colloidal stability of motor oils

Корнеев

Dudkin

Kolunin

2006

Chem Technol Fuels Oils

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Water contamination of motor oils during storage and use in low-temperature conditions cause formation of deposits. These deposits, which consist of asphaltenes and additives, characterize the colloidal stability of the oils. A decrease in the concentration of additives worsens the performance properties of the motor oils..In 1955, Anglo-American engineers turned their attention to the greasy black sediments in the lubricating systems of internal combustion engines for the first time [1,2]. Five years later, Soviet scientists also showed an interest in these formations [3]. All investigators agreed that the presence of water in the motor oil is the basic cause of the deposits. Such deposits can also be found on the bottom of motor oil storage tanks. The presence of water in oil is determined in laboratory conditions using special equipment in the first case and visually during cleaning of oil tanks in the second case.How does water affect the state of motor oils and what are the consequences?The additives it contains play the paramount role in ensuring the performance of motor oils. The effect of water on the state of motor oils was investigated with a specially developed method using fresh motor oils of guaranteed quality: M-8V (GOST 10541-78) and Turbo-1 M-8D(m) (TU 38.30119110-97).The method of investigation provided for: forced introduction of 0.5, 5, 10, and 15% water in samples of motor oils; careful mixing; resting for 72 h; visual observation for the state of the oils; emission spectral analysis of the top layer of the sample on a MFS-7 unit for recording the content of elements -additive indicators.After introduction of the water, stirring, and holding, the liquids stratified with formation of sediment. The height of the sediment layer was a function of the water content in the mixture and the concentration of additives in the oil. The additives were salts of organic acids and different metals.The change in the content of ash additives can be judged by the change in the concentration of metals in the oil, determined in spectral analysis. The results of spectral analysis of the top layer of the water-contaminated oils are shown in Fig. 1.

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Lubricant Degradation in the Internal Combustion Engine Ring Zone

Fox

2005

World Tribology Congress III, Volume 2

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Development of the ring zone sampling technique for operating internal combustion engines is described. Results show a standing ring of lubricant in the piston ring zone which is substantially degraded compared to that of the sump lubricant. Recent work shows that the degradation of a formulated lubricant can be followed by multiple sampling points in the ring pack, e.g., complementary anti-oxidant degradation/protection of base oil is demonstrated. ‘Residence times’ for lubricant in the ring zone are defined and their determination discussed. The influence of bore and ring surface finish is emphasised. Extension of the technique to differentiate between different quality of lubricants and the different conditions of first ring and the base of the crown land for a piston is described. The principal areas of detailed knowledge which are not known for piston ring lubrication and tribology are examined.

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Cleaner Crankcases with Blowby Diversion

Cited by 18 publications

References 2 publications

Performance and Combustion Characteristics Analysis of Multi-Cylinder CI Engine Using Essential Oil Blends

Performance and Combustion Characteristics Analysis of Multi-Cylinder CI Engine Using Essential Oil Blends

Water contamination and colloidal stability of motor oils

Lubricant Degradation in the Internal Combustion Engine Ring Zone

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