Showing papers on "Diesel engine published in 2010"
TL;DR: In this paper, the performance, emission and combustion of a diesel engine using neat rapeseed oil and its blends of 5, 20% and 70%, and standard diesel fuel separately were investigated.
646 citations
TL;DR: In this paper, the authors reviewed the technologies used for the biodiesel separation and purification, biodiesel quality, and its effects on diesel engines and found that the quality of biodiesel fuel is significant for its successful use on compression ignition engines and subsequent replacement of non-renewable fossil fuels.
Abstract: The continuous increasing demand for energy and the diminishing tendency of petroleum resources has led to the search for alternative renewable and sustainable fuel. Biodiesel is best substitute for petro-diesel and also most advantageous over petro-diesel for its environmental friendliness. The quality of biodiesel fuel was found to be significant for its successful use on compression ignition engines and subsequent replacement of non-renewable fossil fuels. Conventional biodiesel separation and purification technologies were noticed to yield lower quality biodiesel fuel with resultant excessive energy and water consumptions. Membrane technology showed more potential for effective and efficient separation and purification of biodiesel. This technology need be explored for the attainment of better quality biodiesel fuels. This paper reviews the technologies used for the biodiesel separation and purification, biodiesel quality, and its effects on diesel engines. Biodiesel biodegradability, lubricity, stability, economic importance, and gaseous emissions have been discussed.
558 citations
TL;DR: In this article, an experimental investigation is conducted to evaluate the effects of using blends of n-butanol (normal butanol) with conventional diesel fuel, with 8, 16% and 24% (by volume) nbutanol, on the performance and exhaust emissions of a standard, fully instrumented, four-stroke, high-speed, direct injection (DI), Ricardo/Cussons ‘Hydra’ diesel engine located at the authors' laboratory.
537 citations
TL;DR: It is shown that a strontium-doped perovskite catalyst, prepared from more abundant (and cheaper) elements, may help to lower the cost of NOx treatments and thus ultimately make diesel a more cost-effective automotive fuel.
Abstract: The high cost and poor thermal durability of current lean nitrogen oxides (NOx) aftertreatment catalysts are two of the major barriers to widespread adoption of highly fuel-efficient diesel engines. We demonstrated the use of strontium-doped perovskite oxides as efficient platinum substitutes in diesel oxidation (DOC) and lean NOx trap (LNT) catalysts. The lanthanum-based perovskite catalysts coated on monolith substrates showed excellent activities for the NO oxidation reaction, a critical step that demands heavy usage of platinum in a current diesel aftertreatment system. Under realistic conditions, La(1-x)SrxCoO3 catalysts achieved higher NO-to-NO2 conversions than a commercial platinum-based DOC catalyst. Similarly, a La(0.9)Sr(0.1)MnO3-based LNT catalyst achieved NOx reduction performance comparable to that of a commercial platinum-based counterpart. The results show promise for a considerably lower-cost diesel exhaust treatment system.
526 citations
TL;DR: In this article, the effects of the engine design parameters viz. compression ratio (CR) and fuel injection pressure (IP) jointly on the performance with regard to fuel consumption (BSFC), brake thermal efficiency (BTHE), and emissions of CO, CO2, HC, NOx and Smoke opacity with JME as fuel.
375 citations
TL;DR: In this paper, the effects of methanol-diesel (M5, M10) and ethanol-diesels (E5, E10) fuel blends on the performance and exhaust emissions of a single cylinder, four-stroke, direct injection, naturally aspirated diesel engine was experimentally investigated.
364 citations
TL;DR: In this paper, chicken fat biodiesel with synthetic Mg additive was studied in a single-cylinder, direct injection (DI) diesel engine and its effects on engine performance and exhaust emissions were studied.
325 citations
TL;DR: In this paper, the influence of the diesel fuel n-butanol content on the performance and emissions of a heavy duty direct injection diesel engine with multi-injection capability was investigated.
324 citations
TL;DR: In this paper, performance and emissions of cottonseed oil methyl ester (CSOME) in a diesel engine was experimentally investigated and the experimental results showed that the lower contents of CSOME in the blends can partially be substituted for the diesel fuel without any modifications in diesel engines.
310 citations
TL;DR: In this paper, a compression ignition diesel engine was tested with a compressed ignition engine to evaluate performance and emissions, and the results showed that lower concentration of apricot seed kernel oil methyl ester in blends gave a better improvement in the engine performance and exhaust emissions.
Abstract: s In this study, apricot ( Prunus armeniaca ) seed kernel oil was transesterified with methanol using potassium hydroxide as catalyst to obtain apricot seed kernel oil methyl ester. Neat apricot seed kernel oil methyl ester and its blends with diesel fuel were tested in a compression ignition diesel engine to evaluate performance and emissions. Apricot seed kernel oil methyl ester and its blends can be successfully used in diesel engines without any modification. Lower concentration of apricot seed kernel oil methyl ester in blends gives a better improvement in the engine performance and exhaust emissions. Therefore lower percent of apricot seed kernel oil methyl ester can be used as additive.
296 citations
TL;DR: In this article, the effects of using methanol as additive to biodiesel-diesel blends on the engine performance, emissions and combustion characteristics of a direct injection diesel engine under variable operating conditions were evaluated.
TL;DR: In this paper, a comprehensive and critical review is presented specifically pertaining to straight vegetable oils usage in diesel engine, where a detailed record of historical events described and a SWOT analysis is carried out.
Abstract: The ever increasing fossil fuel usage and cost, environmental concern has forced the world to look for alternatives. Straight vegetable oils in compression ignition engine are a ready solution available, however, with certain limitations and with some advantages as reported by many researchers. A comprehensive and critical review is presented specifically pertaining to straight vegetable oils usage in diesel engine. A detailed record of historical events described. Research carried out specifically under Indian conditions and international research work on the usage of straight vegetable oils in the diesel engine is separately reviewed. Many researchers have reported that straight vegetable oils in small percentage blends with diesel when used lower capacity diesel engines have shown great promise with regards to the thermal performance as well exhaust emissions. This has been explained in detail. Finally based on the review of international as well as Indian research a SWOT analysis is carried out. The review concludes that there is still scope for research in this area.
TL;DR: On the whole, compared with Euro V diesel fuel, the blended fuels could lead to reduction of both NO(x) and PM of a diesel engine, with the biodiesel-methanol blends being more effective than the biod diesel-ethanol blended.
TL;DR: In this paper, the authors collected and analyzed published works mainly in scientific journals about the engine performance, combustion and emissions characteristics of cooking oil (UCO) biodiesel on diesel engine.
Abstract: As the environment degrades at an alarming rate, there have been steady calls by most governments following international energy policies for the use of biofuels. One of the biofuels whose use is rapidly expanding is biodiesel. One of the economical sources for biodiesel production which doubles in the reduction of liquid waste and the subsequent burden of sewage treatment is used cooking oil (UCO). However, the products formed during frying, such as free fatty acid and some polymerized triglycerides, can affect the transesterification reaction and the biodiesel properties. This paper attempts to collect and analyze published works mainly in scientific journals about the engine performance, combustion and emissions characteristics of UCO biodiesel on diesel engine. Overall, the engine performance of the UCO biodiesel and its blends was only marginally poorer compared to diesel. From the standpoint of emissions, NOx emissions were slightly higher while un-burnt hydrocarbon (UBHC) emissions were lower for UCO biodiesel when compares to diesel fuel. There were no noticeable differences between UCO biodiesel and fresh oil biodiesel as their engine performances, combustion and emissions characteristics bear a close resemblance. This is probably more closely related to the oxygenated nature of biodiesel which is almost constant for every biodiesel (biodiesel has some level of oxygen bound to its chemical structure) and also to its higher viscosity and lower calorific value, which have a major bearing on spray formation and initial combustion.
TL;DR: In this article, the effects of cavitation and turbulence generated inside the injector of a diesel engine have been examined by performing 3D time-dependent simulations with detailed chemistry under diesel engine conditions.
TL;DR: In this paper, a comprehensive experimental investigation of combustion and heat release parameters of a direct injection compression ignition engine running with biodiesel and its blends with diesel fuel was carried out, including the percentage of biodiesel in the blend, engine load, injection timing, injection pressure, and compression ratio.
TL;DR: In this paper, a dual-fuel engine test rig with an appropriately designed shell and tube heat exchanger (with exhaust bypass arrangement) was operated in such a way that it could give desired FIT.
TL;DR: In this article, the authors studied the characteristics of the particle size distribution, reaction characteristics of nanoparticles on the catalyst, and exhaust emission characteristics when a common rail direct injection (CRDI) diesel engine is run on biofuel-blended diesel fuels.
TL;DR: In this article, the authors used ethanol as an additive to research the possible use of higher percentages of biodiesel in an unmodified diesel engine, and the experimental results showed that the performance of the CI engine was improved with the use of the BE20 especially in comparison to B20.
TL;DR: In this paper, the authors investigated the use of artificial neural network (ANN) modelling to predict brake power, torque, BSFC, NOx, and exhaust emissions of a diesel engine modified to operate with a combination of both compressed natural gas CNG and diesel fuels.
TL;DR: In this article, the authors used biogas in a HCCI engine with charge temperature and amount of diesel injected into the intake manifold being used to control combustion, and the best energy ratio was 50%.
TL;DR: In this article, the effects of injection pressure and timing on the performance and emission characteristics of a DI diesel engine using methanol (5, 10% and 15%) blended-diesel fuel were investigated.
TL;DR: In this article, castor methyl ester (CME) was prepared by transesterification using potassium hydroxide (KOH) as catalyst and was used in four stroke, single cylinder variable compression ratio type diesel engine.
TL;DR: In this paper, the performance and pollution of a diesel engine fueled with diesel-biodiesel-ethanol blends compared with diesel fuel in laboratory tests are presented. And the main properties of the researched fuels are presented within this paper, in comparison with classical diesel fuel (chemical composition, density, kinematic viscosity, cold filter plugging point, flash point).
TL;DR: In this paper, the performance enhancement of a conventional diesel engine through the addition of H2/O2 mixture, generated through water electrolysis, was evaluated under constant speed with varying load and amount of hydrogen mixture.
TL;DR: In this paper, an experimental study conducted on a modern high speed common-rail automotive Diesel engine in order to evaluate the effects on combustion and pollutant emissions of water injected as a fine mist in the inlet manifold is presented.
TL;DR: In this article, an experimental study has been carried out on a direct-injection turbocharged diesel engine, where particle-phase and gas-phase PAHs in engine exhaust were collected by fiberglass filters and PUF/XAD-2/PUF cartridges, respectively, and determined by a gas chromatograph/mass spectrometer (GC/MS).
TL;DR: In this paper, a kirloskar H394 DI diesel engine was evaluated using methyl ester of fish oil and its blends with diesel fuel to evaluate fish biodiesel as an alternative fuel for diesel engine, at constant speed of 1500rpm under variable load conditions.
TL;DR: Combustion characteristics and exhaust emissions in diesel engine were not influenced by the addition of antioxidants in biodiesel fuel, and no trends were observed according to the type or amount of antioxidant.
TL;DR: Biodiesel is biodegradable and nontoxic, and it significantly reduces toxic and other emissions when burned as a fuel as mentioned in this paper, and it can be used as diesel fuel.
Abstract: Biodiesel is biodegradable and nontoxic, and it significantly reduces toxic and other emissions when burned as a fuel. The advantages of biodiesel as diesel fuel are its portability, ready availability, renewability, higher combustion efficiency, non-toxicity, higher flash point, and lower sulfur and aromatic content, higher cetane number, and higher biodegradability. The major disadvantages of biodiesel are its higher viscosity, lower energy content, higher cloud point and pour point, higher nitrogen oxide (NOx) emissions, lower engine speed and power, injector coking, engine compatibility, high price, and greater engine wear. The technical disadvantages of biodiesel/fossil diesel blends include problems with fuel freezing in cold weather, reduced energy density, and degradation of fuel under storage for prolonged periods. The sources of biodiesel are vegetable oils and fats. The direct use of vegetable oils and/or oil blends is generally considered to be unsatisfactory and impractical for both direct in...