• Title/Summary/Keyword: Engine Oil

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An Effect in of the Bio-oil as an Alternative Fuel on the Performance of Diesel Engine (Bio-oil이 디젤기관의 기관성능에 미치는 영향)

  • Cho, Ki-Hyon;Chung, Hyung-Kil;Kang, Hyung-Soo
    • Journal of the Korean Society of Industry Convergence
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    • v.4 no.1
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    • pp.11-19
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    • 2001
  • This study was carried out to investigate the feasibility of the used frying oil as a bin-oil which was one of the alternative fuel for diesel engine. From tests of engine performance, it was shown that the bio-oil and blends and the sufficient potential as alternative fuels of diesel engine except NOx and Smoke emission.

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Automotive Engine Oil and Vehicle Fuel Economy (자동차 엔진오일과 연비)

  • 이영재;김강출;표영덕
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 2000.11a
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    • pp.155-161
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    • 2000
  • To improve the vehicle fuel economy, various technologies such as improvement of power train efficiency, use of light weight material, improvement of aerodynamic design, have been studied. One of the possible way to improve the vehicle fuel economy is to reduce the engine friction loss by improving the engine oil characteristics. In the present paper, it was examined the effect of the engine oil viscosity and the addition of friction modifier to engine oil on vehicle fuel economy improvements. Moreover, the effect of engine oil degradation on vehicle fuel economy was examined with two gasoline vehicles and one diesel vehicle by using the fuel economy test facility.

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Exhaust Emissions Characteristics of a Small Diesel Engine using Rice-bran Oil (미강유 적용 소형 디젤엔진의 배기배출물 특성)

  • 나우정;유병규;정진도
    • Journal of Biosystems Engineering
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    • v.23 no.2
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    • pp.125-134
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    • 1998
  • It seems possible, by use of vegetable oils, to solve the pollution problem caused by the exhaust gas from diesel-engine vehicles. Recently vegetable oils has received considerable attention as an alternative and clean energy source to the foreseeable depletion of world oil supplies. The objective of this study is to experimentally investigate the characteristics of exhaust emissions of a small diesel engine using light oil, rice-bran oil, heated rice-bran oil, rice-bran oil treated with ultrasonic energy. SO$_2$ emission from the pure and the treated rice-bran oils was not detected at speeds hgher than 1,800 rpm while that from the light oil was detected at all the speeds at 4/4 load. NOx emission form these vegetable oils was generally higher compared to that from the light oil for most of the test conditions. tendency opposite to that of NOx emission. The data obtained in this experiment may be applicable for the desist of small diesel engine using the alternative fuels.

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Measurement of the Engine Oil Deterioration of the Diesel Vehicle Using the Engine Oil Level Gauge (엔진오일 레벨게이지를 이용한 디젤 엔진의 오일 열화특성 측정)

  • Kim, Man Jae;Sin, Tae Ho;Lee, Sang Hoon
    • Transactions of the Korean Society of Automotive Engineers
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    • v.25 no.1
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    • pp.60-65
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    • 2017
  • We designed and fabricated the engine oil monitoring sensor to measure engine oil deterioration through increased vehicle mileage. Since the condition of the engine oil can be affected by the state of the vehicle and its operating conditions, it should be directly measured and determined in every vehicle. The fabricated sensor has an aluminum parallel capacitor structure that measures capacitance related with the dielectric constant, which is one of the indices of oil deterioration. The size of the capacitor is small enough that it could be easily adapted on the oil level gauge without introducing any change in the design. The fabricated device is installed in the diesel engine to measure the change in capacitance accurately as the vehicle moved from 0 km (new engine oil state) to 11,364 km. The results showed the maximum value at around 5,000 km, and the values plateaued as mileage increased, corresponding with the measurement result of the TAN (Total Acid Number). Based on the results, the condition of the oil must be monitored regularly though oil change is recommended once the vehicle has traveled the distance of around 10,000 km.

Effect of the Properties of Diesel Engine Oil and Aging on Exhaust Gases and DPF (경유엔진용 윤활유의 성상 및 열화가 배출가스 및 후처리 장치에 미치는 영향 연구)

  • Kim, JeongHwan;Kim, KiHo;Lee, JungMin
    • Tribology and Lubricants
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    • v.34 no.6
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    • pp.292-299
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    • 2018
  • The objective of this research is to investigate the impact of engine oil aging on PM(Particulate Matter), exhaust gases, and DPF. It is widely known that the specification of a lubricant and its consumption in an ICE considerably influences the release of regulated harmful emissions under normal engine operating conditions. Considering DPF clogging phenomena associated with lubricant-derived soot/ash components, a simulated aging mode is designed for DPF to facilitate engine dynamometer testing. A PM/ash accumulation cycle is developed by considering real-world engine operating conditions for the increment of engine oil consumption and natural DPF regeneration for ash accumulation. The test duration for DPF aging is approximately 300 h with high- and low-SAPs engine oils. Detailed engine lubricant properties of new and aged oils are analyzed to evaluate the effect of engine oil degradation on vehicle mileage. Furthermore, physical and chemical analyses are performed using X-CT, ICP, and TGA/DSC to quantify the engine oil contribution on the PM composition. This is achieved by sampling with various filters using specially designed PM sampling equipment. Using high SAPs engine oil causes more PM/ash accumulation compared with low SAPs engine oils and this could accelerate fouling of the EGR in the engine, which results in an increase in harmful exhaust gas emissions. These test results on engine lubricants under operating conditions will assist in the establishment of regulated and unregulated toxic emissions policies and lubricant quality standards.

A Study for the Performance Improvement by Fumigation LPG on Diesel Engine using a Used Frying Oil (폐식용유를 사용한 디젤기관에서의 LPG 공급에 의한 성능개선에 관한 연구)

  • 조기현;황의현;백태실;정형길
    • Journal of Advanced Marine Engineering and Technology
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    • v.24 no.5
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    • pp.16-24
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    • 2000
  • In this study, using frying oil, performance of engine and emission concentration were compared with the case of using diesel oil. And results are as follows. 1. Engine torque and brake horse power indicate nearly same value as the case of using diesel fuel. 2. Temperature of exhaust gas was increased with as high engine speed and load. 3. To reduce concentration of hydrocarbon, it is effective to operate using used frying oil in low engine speed and load, and adding LPG in high engine speed and load. 4. Concerning with concentration of carbon mono oxide and smoke emission, it was assured, that as engine load increased, lower concentration emitted in case of utilizing mixed fuel than that of utilizing pure diesel fuel.

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The Effects of Additional Factors on the Engine Friction Characteristics (엔진 마찰 특성에 미치는 부수적 인자의 영향)

  • Cho, Myung-Rae;Kim, Joong-Soo;Oh, Dae-Yoon;Han, Dong-Chul
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.26 no.10
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    • pp.2159-2164
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    • 2002
  • This paper reports on the effects of additional factors on the engine friction characteristics. The total friction loss of engine is composed of pumping and mechanical friction loss. The pumping loss was calculated from the cylinder pressure, and the mechanical friction loss was measured by strip-down method under the motoring condition. The various parameters were tested. The engine friction loss was much affected by oil and coolant temperature. The low viscosity oil was very effective to reduce the friction loss, and friction modifier was very useful to reduce the friction loss at lower engine speed. The engine friction loss was varied with engine running time because of surface roughness decreasing and oil degradation. To prevent oil-churning effect, it was very important to maintain the proper oil level. The presented results will be very useful to understand friction characteristics of engine.

EMISSION ANALYSIS OF A MEDIUM CAPACITY DIESEL ENGINE USING MAHUA OIL BIODIESEL

  • Sharma, Ajay Kumar;Das, L.M.;Naik, S.N.;Chauhan, Bhupendra Singh;Cho, Haeng Muk
    • Journal of Energy Engineering
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    • v.22 no.2
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    • pp.136-140
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    • 2013
  • The stringent emission norms cannot be met through engine design and exhaust after treatment alone. Use of oxygenated fuel like biodiesel as a alternative to diesel may be the best way to reduce emissions today. In this study, Diesel fuel and pure biodiesel (mahua oil) were tested on a single cylinder naturally-aspirated direct-injection diesel engine. The study aims to investigate the effects of the mahua oil biodiesel on existing diesel engine emissions. The effect of test fuels on engine emissions like CO, HC, $CO_2$, NOx and smoke emissions was investigated with respect to the load on engine. Smoke opacity of Diesel engine was lower in case of biodiesel of mahua oil as compare to mineral diesel. NOx emissions was little higher during the whole range of loading, which is a typical characteristic of biodiesel. However the increments are within in the narrow range. $CO_2$ emissions was bit higher which is the indication of better combustion due to presence of rich oxygen in the mixture, it results in the low values of CO and HC during the whole range of experiments. Thus considering environmental norms most of the engine emissions, it can be concluded and biodiesel derived from mahua oil could be used in a conventional diesel engine without any modification.

Feasibility Study of Using Wood Pyrolysis Oil in a Diesel Engine (목질 열분해유의 디젤 엔진 적용성 연구)

  • Lee, Seok-Hwan;Park, Jun-Hyuk;Lim, Gi-Hun;Choi, Young;Woo, Se-Jong;Kang, Kern-Yong
    • Journal of ILASS-Korea
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    • v.16 no.3
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    • pp.152-158
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    • 2011
  • Fast pyrolysis of biomass is one of the most promising technologies for converting biomass to liquid fuels. The pyrolysis oil, also known as the bio crude oil (BCO), have been regarded as an alternative fuel for petroleum fuels to be used in diesel engine. However, the use of BCO in diesel engine requires modifications due to low energy density, high water contents, low acidity, and high viscosity of the BCO. One of the easiest way to adopt BCO to diesel engine without modifications is the use of BCO/diesel emulsions. In this study, a diesel engine operated with diesel, bio diesel (BD), and BCO/diesel emulsion was experimentally investigated. Performance and emission characteristics of a diesel engine fuelled by BCO/diesel emulsion were examined. Results showed that stable engine operation was possible with emulsion and engine output power was comparable to diesel and bio diesel operation. Long term validation of adopting BCO in diesel engine is still needed because the oil is acid, with consequent problems of corrosion especially in the injection system.

Experimental Study on the Tribological Characteristics of Diluted Engine Oil by Diesel Fuel (디젤유가 혼입된 엔진오일의 트라이볼로지 특성에 관한 실험적 연구)

  • Kim, Han-Goo;Kim, Chung-Kyun
    • Tribology and Lubricants
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    • v.21 no.4
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    • pp.159-164
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    • 2005
  • An experimental study was conducted to evaluate characteristic variation of diluted engine oils in which contains diesel fuels and its tribological effects on engine components. In this study, diluted engine oils with $10\%,\;15\%,\;and\;20\%$ of initial fuel content rate have been used for measuring the viscosity reduction rate, blow-by gas increment rate, main gallery pressure reduction rate, and fuel content rate in engine oils. These parameters are strongly related to the tribological characteristics of key engine components. The kinematic viscosity of engine oils in which is contained by diesel fuels from $10\%\;to\;20\%$ in oils is decreasing to approximately $54\%$ of initial diluted fuel-oil volume ratios. The experimental results show that the distillated engine oil decrease the viscosity of engine oil and its oil film stiffness, and increase the wear rate of rubbing parts of engine components. Thus we recommend that the containing volume rate of fuels in engine oils should be restricted to $3\~4\%$ for a sophisticated Diesel engine and $5\~7\%$ for a standard one.