Showing papers on "Diesel engine published in 2008"
TL;DR: In this article, the authors collected and analyzed the body of work written mainly in scientific journals about diesel engine emissions when using biodiesel fuels as opposed to conventional diesel fuels, focusing on the most concerning emissions: nitric oxides and particulate matter.
1,768 citations
TL;DR: The use of vegetable oils as alternative fuels has been around for one hundred years when the inventor of the diesel engine Rudolph Diesel first tested peanut oil, in his compression-ignition engine as discussed by the authors.
447 citations
TL;DR: In this paper, an experimental investigation of reaction conditions such as methanol/oil molar ratio, alkaline catalyst amount, reaction time and reaction temperature are deemed to have main impact on reaction conversion efficiency.
408 citations
TL;DR: In this paper, an experimental study has been conducted on a 2.0l HSDI automotive diesel engine under low-load and part load conditions in order to distinguish and quantify some effects of EGR on combustion and NOx/PM emissions.
384 citations
TL;DR: In this article, the performance and emission characteristics of linseed oil, mahua oil, rice bran oil, and Linseed oil methyl ester (LOME), in a stationary single cylinder, four-stroke diesel engine and compare it with mineral diesel were investigated.
344 citations
TL;DR: In this article, the use of methyl ester obtained from waste frying oil (WFO) is examined as an experimental material and the results obtained with the aim of comparison from the measures of torque, power, and specific fuel consumptions are nearly the same.
338 citations
TL;DR: In this paper, the authors investigated the combustion behavior of a DI diesel engine with diesel-oxygenate blends and found that the reduction of smoke is strongly related to the oxygen content of blends.
318 citations
TL;DR: In this paper, performance and emission analyses carried out in an unmodified diesel engine fueled with Pongamia pinnata methyl ester (PPME) and its blends with diesel.
315 citations
TL;DR: In this paper, the performance of Ricardo E6 engine using biodiesel obtained from mahua oil (B100) and its blend with high speed diesel (HSD) at varying compression ratio (CR), injection timing (IT), and engine loading (L) has been presented.
313 citations
TL;DR: In this article, an automotive engine using anhydrous bioethanol blended with conventional diesel, with 10% ethanol in volume and no additives, has been compared with those from pure diesel, and the results proved that the use of this renewable component provides a significant reduction on particulate emissions, with no substantial increase in other gaseous emissions.
309 citations
TL;DR: In this article, an experimental investigation is conducted to evaluate the effects of using blends of ethanol with conventional diesel fuel, with 5% and 10% (by vol.) ethanol, on the performance and exhaust emissions of a fully instrumented, six-cylinder, turbocharged and after-cooled, heavy duty, direct injection (DI), Mercedes-Benz engine, installed at the authors’ laboratory, which is used to power the mini-bus diesel engines of the Athens Urban Transport Organization sub-fleet with a view to using bio-ethanol produced from Greek feedstock.
TL;DR: In this article, a comparison between the use of soy, Canola and yellow grease derived B100 biodiesel fuels and an ultra-low sulphur diesel fuel in the high load engine operating conditions was made.
TL;DR: In this article, two different alcohol-derived biodiesel fuels: methyl ester and ethyl ester, both obtained from waste cooking oil, were tested pure and blended with a diesel reference fuel, which was tested too, in a 2.2l, common-rail injection diesel engine.
TL;DR: In this article, the authors measured gas and particle-phase pollutants separately for light-duty (LD) vehicles and (b) medium-duty and heavy-duty diesel trucks, respectively, at the Caldecott Tunnel in the San Francisco Bay area.
TL;DR: In this paper, the authors used hydrogen as an air-enrichment medium with diesel as an ignition source in a stationary diesel engine system to improve engine performance and reduce emissions.
TL;DR: In this article, the effect of cooled EGR gas temperature level for various EGR percentages on performance and emissions of a turbocharged DI heavy duty diesel engine operating at full load was examined, using a multi-zone combustion model.
TL;DR: In this paper, the effect of applying a biodiesel with either 10% blended methanol or 10% fumigation methanolisol was compared with diesel fuel, and the results indicated a reduction of CO 2, NO x, and particulate mass emissions and a reduction in mean particle diameter.
TL;DR: In this article, the emission measurements of gases, particulate matter (PM), metals, ions, elemental and organic carbon, conducted from the main engine of an ocean-going PanaMax class container vessel, at certification cycle and at vessel speed reduction mode, during actual operation at sea.
TL;DR: In this paper, an experimental investigation is conducted to evaluate the use of sunflower and cottonseed oil methyl esters (bio-diesels) of Greek origin as supplements in the diesel fuel at blend ratios of 10/90 and 20/80, in a fully instrumented, six-cylinder, turbocharged and after-cooled, direct injection (DI), Mercedes-Benz, mini-bus diesel engine installed at the authors' laboratory.
TL;DR: It is concluded that it is possible to use tyre pyrolysis oil in diesel engines as an alternate fuel in the future.
TL;DR: In this article, a turbocharged direct injection (DI) diesel engine was converted to a low heat rejection (LHR) engine and the effects of biodiesel (produced from sunflower oil) usage in the LHR engine on its performance characteristics have been investigated experimentally.
TL;DR: Correa et al. as mentioned in this paper evaluated the emissions of seven carbonyl emissions (formaldehyde, acetaldehyde, acrolein, acetone, propionaldehyde, butyraldehyde and benzaldehyde) in a heavy-duty diesel engine with pure diesel and biodiesel blends.
TL;DR: In this paper, the authors introduced a Diesel/methanol compound combustion system (DMCC) and its application to a naturally aspirated Diesel engine with and without an oxidation catalytic converter.
TL;DR: In this paper, a single-cylinder diesel engine has been converted into a dual-fuel engine to operate with natural gas together with a pilot injection of diesel fuel used to ignite the CNG-air charge.
TL;DR: In this article, a method was developed to introduce ammonia into the intake manifold and to inject diesel fuel or biodiesel directly into the cylinder to ignite the mixture, which was proven successful in a multicylinder, turbocharged diesel engine.
Abstract: This study demonstrated the feasibility of ammonia combustion in compression-ignition diesel engines. Ammonia combustion does not produce carbon dioxide, a known greenhouse gas that contributes to global warming. Using this idea, a method was developed to introduce ammonia into the intake manifold and to inject diesel fuel or biodiesel directly into the cylinder to ignite the mixture. This dual-fuel approach was chosen because ammonia has a high resistance to autoignition. This approach was proven successful in a multicylinder, turbocharged diesel engine. The system developed required only a slight modification of the intake to implement the ammonia fuel line. The existing diesel fuel injection system remained unchanged. A liquid ammonia tank was used for fuel storage, and a high pressure relief valve regulated the ammonia flow rate. Engine combustion phasing (e.g., ignition) was controlled by diesel fuel injection. Both experiments and chemical kinetic studies were carried out for different diesel/ammoni...
TL;DR: In this paper, a direct injection (DI) diesel engine using hydrogen with diesel and hydrogen with diethyl ether (DEE) as the ignition source was evaluated and it was observed that hydrogen-DEE operation results in increased brake thermal efficiency by 20% and oxides of nitrogen (NOx) showed an increase of 13% compared to diesel.
TL;DR: In this article, an experimental study of real multi-hole Diesel nozzles is performed under current DI Diesel engines operating conditions. The aim of the investigation is to study the influence of orifice geometry on the flow at the nozzle exit and to analyse its effect on the spray in evaporative conditions.
TL;DR: In this article, the authors proposed a two-stage turbocharging system for improving the brake mean effective pressure (BMEP) and specific power with a downsizing approach, while retaining a good dynamic response using possibly two stages turbocharging.
TL;DR: In this article, the effects of using diesel-methanol-dodecanol blends including methanol of various proportions on a CI engine performance are experimentally investigated.