A Study of Engine Oil Composition Effects on Zeolite-type SCR Catalyst Durability

2007 ◽  
Author(s):  
Masahito Shibata ◽  
Hideyuki Nagata ◽  
Shigeki Takeshima ◽  
Koji Hoshino
Keyword(s):  
Engine Oil ◽  
Oil Composition ◽  
Scr Catalyst ◽  
Composition Effects ◽  
Zeolite Type ◽  
Catalyst Durability

scholarly journals Comparison of Vehicle Aged SCR Catalyst on a Particulate Filter (SCRF) with Oven Aged Equivalent

2019 ◽  
Vol 16 (3) ◽  
pp. 6918-6930
Author(s):  
K. Mehsein ◽  
G. Delahay ◽  
N. Villain ◽  
N. Moral
Keyword(s):  
Diesel Engines ◽  
Chemical Elements ◽  
Engine Oil ◽  
Particulate Filter ◽  
Nox Emissions ◽  
Diesel Particulate ◽  
Scr Catalyst ◽  
Active Regeneration ◽  
Light Duty Vehicles ◽  
Urea Decomposition

To meet forthcoming Euro 6 Diesel engines NOx emissions legislation; highly efficient after-treatment systems are required. The use of urea or ammonia SCR is a well-established solution for high NOx abatement for diesel engines. The combination of a Cu-Zeolite SCR catalyst and a diesel particulate filter has been widely investigated in recent years to respond to the European NOx emissions regulations especially for those on light-duty vehicles. The after-treatment systems are preferred to be durable during the entirety of vehicle use. Indeed, the SCRF system must withstand the temperature resulting from the active regeneration of the particulate filter continuously. A 160,000 km vehicle aged SCRF catalyst which has endured more than 91 hours at temperatures superior to 600°C during the regeneration of the particulate filter was compared to an SCRF catalyst aged in the laboratory oven for 16 hours at 800°C with 10% H2O. The vehicle aged SCR has not only been exposed to the hydrothermal ageing generated by the diesel particulate regeneration but also has seen chemical elements from urea decomposition, soot accumulation, engine oil and fuel residues. In this paper, deeper comprehension of the behaviour the SCRF catalyst during vehicle ageing was exposed. It is evident that the loss of NOx activity is not only due to the regeneration of the particulate filter but also to the possible contamination from the urea injection and the elements present in the diesel fuel and engine oil. XRF results demonstrate that the concentrations of poisoning elements coming from the engine oil or fuel are concentrated mainly at the outlet of vehicle aged SCRF catalyst. Also, results reveal that the poisoning elements have affected the SCR activity of the vehicle aged SCRF catalyst. Finally, it was possible to establish a correlation between a 160,000 km vehicle aged SCRF catalyst and an equivalent SCRF aged for 16 hours at 800°C.

scholarly journals Trichoderma: Evaluation of Its Degrading Abilities for the Bioremediation of Hydrocarbon Complex Mixtures

2020 ◽  
Vol 10 (9) ◽  
pp. 3152
Author(s):  
Chiara Daccò ◽  
Lidia Nicola ◽  
Marta Elisabetta Eleonora Temporiti ◽  
Barbara Mannucci ◽  
Federica Corana ◽  
...  
Keyword(s):  
Extracellular Enzymes ◽  
Engine Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Trichoderma Asperellum ◽  
Oil Composition ◽  
Used Engine Oil ◽  
Benzene Toluene ◽  
Xylene Isomers ◽  
Different Strains

Hydrocarbons can have very harmful effects on organisms and the environment, and conventional techniques for their removal are expensive and require the use of chemicals and long-term actions. Trichoderma is an ascomycete genus known to be active on different recalcitrant substrates, since it can produce a set of nonspecific extracellular enzymes generally involved in the degradation of lignin. However, the literature concerning the use of Trichoderma to degrade hydrocarbons is still limited. In this work we aimed to investigate the ability of Trichoderma to exploit used engine oil as its sole carbon source for prospective bioremediation of contaminated substrates. Four different strains belonging to Trichoderma asperellum and Trichoderma harzianum species were tested. The fungi were inoculated in direct contact with used engine oil, and after 45 days the samples were analyzed by gas chromatography/mass spectrometry (GC/MS). The results showed that all strains (except Trichoderma asperellum F1020) significantly changed the oil composition, decreasing the aromatic fraction in favor of the aliphatic one. T. harzianum F26, especially, showed a significant reduction of the BTEX (benzene, toluene, ethylbenzene, and the three xylene isomers) and alkylbenzenes fraction and an increase in short-chain aliphatics C1–C20. Enzymatic tests for laccase and peroxidase were also carried out, demonstrating that every strain seems to express a different mode of action.

scholarly journals Experimental evaluation of methanol-gasoline fuel blend on performance, emissions and lubricant oil deterioration in SI engine

2021 ◽  
Vol 13 (6) ◽  
pp. 168781402110252
Author(s):  
Muhammad Ali Ijaz Malik ◽  
Muhammad Usman ◽  
Nasir Hayat ◽  
Syed Wasim Hassan Zubair ◽  
Rehmat Bashir ◽  
...  
Keyword(s):  
Engine Performance ◽  
Engine Oil ◽  
Oil Composition ◽  
Si Engine ◽  
Fuel Blend ◽  
Lubricant Oil ◽  
Oil Deterioration ◽  
Performance And Emissions ◽  
Lower Load ◽  
Hc Emissions

Methanol showed promising results as an alternative to gasoline fuel. However, there exists a research gap for the effect of oxygenated fuel on lubricant oil deterioration along-with engine performance and emissions. This study aims the very topic. The characteristics of SI engine were evaluated for two different loads and nine different engine speeds. The lubricant oil samples were taken out from engine oil sump after 100 h of engine operations using gasoline (G) and M12 sequentially. The brake power of M12 was observed higher in comparison with G. The maximum BTE of 23.69% was observed for M12 on lower load and 2800 rpm. On average, the 6.05% and 6.31% decrease in HC emissions were observed using M12 in comparison with G at lower and higher load respectively. M12 produced 32.52% higher NOx emissions than that of G at lower load. The reduction in kinematic viscosities at 40°C of lubricant oil were found 11.61% and 18.78% for M12 and G respectively. TAN, specific gravity, flash point and ash content of lubricant oil were observed 10.23%, 0.079%, 5.81% and 0.97% higher for M12 respectively. The lubricant oil composition could be developed in future for such fuels which may prolong its life cycle.

Effects of Engine Oil Composition on Diesel Particulate Filter

2005 ◽  
Author(s):  
Koji Hoshino ◽  
Masakuni Hirata ◽  
Isao Kurihara ◽  
Shigeki Takeshima
Keyword(s):  
Diesel Particulate Filter ◽  
Engine Oil ◽  
Particulate Filter ◽  
Oil Composition ◽  
Diesel Particulate

scholarly journals MINERAL ENGINE OIL COMPOSITION AND PROPERTIES CHANGE AFTER ITS OPERATION

2017 ◽  
Vol 27 (6) ◽  
pp. 93-97 ◽  
Author(s):  
B. O. Korchak ◽  
O. B. Grynyshyn ◽  
Т. I. Chervinskyy
Keyword(s):  
Engine Oil ◽  
Oil Composition

Study on the Effect of Hydrogenated Lubricant Base Oil Composition to Its Oxidation Stability

2005 ◽  
Author(s):  
Xiao Li Hu ◽  
Hui Dong Wang
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Oxidation Stability ◽  
Engine Oil ◽  
Oil Composition ◽  
Temperature Oxidation ◽  
Base Oil ◽  
Base Oils ◽  
Thermo Stability ◽  
Model Oil

In this paper, we studied the high temperature oxidation stability of hydrogenated lubricant base oils used in automobile engine oil formations. Different oil from Daqing, Lanzhou and Kelamayi were investigated, and a hydro-isomerised poly alpha olefin oil PAO-6 produced by Mobile company was used as model oil. The influence of aromatic hydrocarbon, sulfur and nitrogen content of the base oils to their oxidation stability was investigated. The result indicated that, the high temperature oxidation stability of all these base oil was not good, but their thermo-stability was very good.

scholarly journals CREATION OF A COMPOSITE COMPOSITION FOR IMPREGNATING RAILWAY SLEEPERS

2021 ◽  
Author(s):  
Larisa Belchinskaya ◽  
Konstantin Zhuzhukin ◽  
A. Bushueva ◽  
Nikolai Jujukin
Keyword(s):  
Water Absorption ◽  
Corn Oil ◽  
Wood Flour ◽  
High Water ◽  
Engine Oil ◽  
Oil Composition ◽  
Transmission Oil ◽  
Target Values ◽  
Coniferous Wood ◽  
Oil Sunflower

This paper shows the stages of developing an eco-friendly composite composition (PKS) for impregnating railway sleepers made of birch wood, which has high water and moisture resistance. Used oils were selected for the study: mineral engine oil, transmission oil, sunflower oil, corn oil. The used oils were compared with the oil liquid ZHTK-2, which is widely used for impregnating railway sleepers, according to the following indicators: the content of the impregnating composition; water absorption and swelling of the impregnated wood after 30 days of standing in water in the radial and tangential directions. According to the sum of the obtained indicators, the spent mineral engine oil (OMM) was chosen as the basis of the PKS, flour of various types of wood (coniferous or deciduous), flour of oak, birch or pine bark was proposed as a filler. The greatest effect was obtained when introducing coniferous wood flour (MDH) in the amount of 1% of the mass of the OMM into the OMM. At the same time, the content of the impregnating composition in the wood increases from 43 to 70%, water absorption decreases (by 63.8%) and the swelling of the wood in the tangential and radial directions. When comparing the target values for the oil composition (OMM+MDX) and the oil liquid ZHTK-2, it was found that the content of the impregnating composition is 10.6% higher than for ZHTK-2, water absorption is reduced by 6.8%.

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