Browsing by Author "Besergil, B"

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    Determination of synthesis conditions of medium, high, and overbased alkali calcium sulfonate
    Besergil, B; Akin, A; Çelik, S
    This review covers a method for preparing an overbased detergent-dispersion additive called overbased calcium sulfonate solution (OBCSS) containing 38.9% (w/w) CaCO3, with a total base number (TBN) value of 436 mg KOH, starting from neutral calcium sulfonate solution (NCSS).(1,2) After the column conditions were optimized, the reaction parameters (P-CO2 and the amounts of Ca(OH)(2), water, and monoethanolamine (MEA)) were examined throughout the tests. The first product medium alkali calcium sulfonate solution (MACSS) with 8.5% (w/w) CaCO3 (TBN = 95 mg KOH/g) is obtained, but higher base values could not be reached. In the second stage, monoethanolamine is added to the feed as a promoter and high alkali calcium sulfonate solution (HACSS) containing 30.4% (w/w) CaCO3 with the value of TBN = 274 mg KOH/g is obtained. In the third stage of the study, targeted product OBCSS is obtained by using HACSS as a feedstock component instead of NCSS.
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    Determination of synthesis conditions of alkali calcium sulfonate
    Besergil, B; Celik, A
    In this study, alkali calcium sulfonate which is added to engine oils as a detergent-dispersant was obtained. A definite amount of Ca(OH)(2) and water was added to the mixture of neutral calcium sulfonate (NCS) and spindle-oil (SO), and the mixture was taken into an appropriate reactor. CO2-air mixture was passed through the mixture for definite periods at 85degreesC and the appropriate parameters affecting the qualities and efficiency of the product were determined. Thus, after the mixture of CO2 + air (having the ratio of 1/8.5) was passed through the mixture of 180 g NCS + 600 g SO + 60 g Ca(OH)(2) + 90 g water with the velocity of 108 L/h for 200 min, transparent alkali calcium sulfonate with a total base number value of 28.6 mg KOH/g was obtained.
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    Study on lubricant quality and its effect on engine component performance
    Besergil, B; Özer, MS; Eskici, M; Atik, E
    Purpose - This paper aims to determine the usage time of the test lubricant NO, prepared from base oils of Aliaga Plant, Izmir, in gasoline and diesel-engines, and the investigations of high-temperature oxidation, engine-protective properties, and property changes of the lubricant in performance time. Design/methodology/approach - Physical and chemical properties of the lubricating oil were initially established, and the oil was then subjected to Petter W-1 gasoline and Petter AV-1 diesel test engines. Dismantling of the engine parts was followed by the examination of pistons, piston rings and bearings, and analysis of the lubricant was also undertaken. The engine performance test results and the quality control of the lubricating oil assessments were evaluated according to the International Engine Lubricant Specifications. Findings - The lubricating oil, under sluggish experimental conditions, appears to meet a 40-hour test in gasoline engines and a 120-hour test in diesel engines with the specifications. This means that under usual working conditions the lubricants keep the engine protective properties in 7,000 km distance for gasoline run-vehicles, and in 5,000 km distance for diesel run-vehicles, after which change of the oil is required. Originality/value - The paper provides information of value to those involved with lubrication and engine performance.
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    Determination of synthesis conditions of neutral calcium sulfonate, so-called detergent-dispersant
    Celik, A; Besergil, B
    In this study, the conditions of obtaining neutral calcium sulfonate which is added to engine oils as a detergent-dispersant was studied. For this purpose, post-dodecyl benzene sulfonic acid, obtained from post-dodecyl benzene which remains as the bottom product during the production of dodecyl benzene sulfonate was used as the initial substance. Additionally, the reactor to be used in the production of neutral calcium sulfonate was designed and the amounts of spindle-oil, toluene, raw sulfonic acid solution and Ca(OH)(2) used during neutralization were determined.