Showing papers on "Diesel engine published in 2014"
TL;DR: In this article, the combustion, performance and emission characteristics of conventional diesel fuel and biodiesel produced from soybean oil and its blends (B10, B20, B50) were compared.
474 citations
TL;DR: In this article, the performance and emission of 10% C. inophyllum biodiesel blends (CIB10) gave a satisfactory result in diesel engines as the brake thermal increase 2.30% and fuel consumption decrease 3.06% compared to diesel.
278 citations
TL;DR: In this article, the influence of properties of various common bio-fuels on the combustion, performance and exhaust emissions of an experimental, single-cylinder, four-stroke, high-speed, DI (direct injection) ‘Hydra’ diesel engine operated at three different loads was evaluated.
278 citations
TL;DR: In this article, two monophenolic antioxidants, 2, 6-di-tert-butyl-4methylphenol (BHA) and 2(3)-tert -butyl -4methoxy phenol(BHT), were added at 1000 ppm concentration to 20% PME (B20) to study their effect.
277 citations
TL;DR: In this article, a mixture of biodiesel fuels produced from two different kinds of waste cooking oils was blended in 5% and 10% with No. 2 diesel fuel, and the detailed combustion and engine performance results showed that the ignition delay with the biodiesel addition was decreased for the all engine loads with the earlier combustion timings due to higher cetane number of fuel.
267 citations
01 Jan 2014
TL;DR: In this paper, the authors investigated the engine performance and emissions produced from Jatropha curcas, Ceiba pentandra and Calophyllum inophyllus biodiesel in compressed ignition engine.
Abstract: Biodiesel is a recognized replacement for diesel fuel in compressed ignition engines due to its significant environmental benefits. The purpose of this study is to investigate the engine performance and emissions produced from Jatropha curcas, Ceiba pentandra and Calophyllum inophyllum biodiesel in compressed ignition engine. The biodiesel production process and properties are discussed and a comparison of the three biodiesels as well as diesel fuel is undertaken. After that, engine performance and emissions testing was conducted using biodiesel blends 10%, 20%, 30% and 50% in a diesel engine at full throttle load. The engine performance shows that those biodiesel blends are suitable for use in diesel engines. A 10% biodiesel blend shows the best engine performance in terms of engine torque, engine power, fuel consumption and brake thermal efficiency among the all blending ratios for the three biodiesel blends. Biodiesel blends have also shown a significant reduction in CO2, CO and smoke opacity with a slight increase in NOx emissions.
254 citations
TL;DR: In this article, the engine performance and emissions testing was conducted using biodiesel blends 10%, 20%, 30%, 30% and 50% in a diesel engine at full throttle load.
251 citations
TL;DR: In this paper, the effect of butanol-biodiesel blends on the emissions and performance characteristics of a four-stroke, naturally aspirated, water-cooled, indirect injection diesel engine (IDI) was investigated.
241 citations
TL;DR: In this article, the potential of biodiesel obtained from a non-edible oil source (Moringa oleifera) was explored and compared with that of palm biodiesel and diesel fuel.
232 citations
TL;DR: In this paper, the combustion and emission fundamentals of high n-butanol/diesel ratio blend with 40% butanol (i.e., Bu40) in a heavy-duty diesel engine were investigated by experiment and simulation at constant engine speed of 1400rpm and an IMEP of 1.0 MPa.
231 citations
TL;DR: In this article, a critical analysis of emission characteristics for both diesel and biodiesel was performed under low temperature combustion (LTC) and the effects of significant factors thoroughly under LTC regime.
TL;DR: In this paper, the effect of compression ratio on the performance, combustion and emission characteristics of a dual fuel diesel engine run on raw biogas was investigated, where a 3.5-kW single cylinder, direct injection, water cooled, variable compression ratio diesel engine is converted into a biogAS run dual-fuel diesel engine by connecting a venturi gas mixer at the manifold.
TL;DR: In this article, the effect of using a mixture of diesel and n-pentanol, which is one of the second-generation biofuels with comparable properties to diesel fuel, as fuel on the combustion, performance, and gaseous and particulate emissions of a naturally-aspirated, four-cylinder, direct-injection diesel engine was examined.
TL;DR: In this paper, the performance comparison between cyclic Alkane-based ORC and steam cycle with relative pressure is carried out, and the maximum improvement of 10% in brake performance and fuel consumption is obtained for DE-ORC combined systems with cyclohex-ane used as working fluid.
TL;DR: In this article, the effects of the injection pressure and injection timing on the combustion and emission characteristics in a single-cylinder common-rail direct injection (CRDI) diesel engine fueled with waste cooking oil (WCO) biodiesel and commercial diesel fuel were investigated.
TL;DR: A literature review of the effect of various additives on biodiesel properties, engine performance and exhaust emission characteristics and the corresponding effect factors were surveyed and analyzed in detail as mentioned in this paper, concluding that the use of additive in biodiesel fuel is inalienable both for improving properties and for better engine performance.
TL;DR: In this article, the authors examined the influence of the ethanol and RME addition to diesel fuel on start of injection, autoignition delay, combustion and maximum heat release rate, engine performance efficiency and emissions of the exhaust when operating over a wide range of loads and speeds.
TL;DR: In this paper, the impact of water-in-diesel emulsion fuel on the performance and emission of diesel engines, micro-explosion phenomena especially the factors that affecting the onset and strength of microexplosion process, and proposed potential research area in W/D EMulsion fuel study.
Abstract: The need for more efficient energy usage and a less polluted environment are the prominent research areas that are currently being investigated by many researchers worldwide. Water-in-diesel emulsion fuel (W/D) is a promising alternative fuel that could fulfills such requests in that it can improve the combustion efficiency of a diesel engine and reduce harmful exhaust emission, especially nitrogen oxides (NOx) and particulate matter (PM). To date, there have been many W/D emulsion fuel studies, especially regarding performance, emissions and micro-explosion phenomena. This review paper gathers and discusses the recent advances in emulsion fuel studies in respect of the impact of W/D emulsion fuel on the performance and emission of diesel engines, micro-explosion phenomena especially the factors that affecting the onset and strength of micro-explosion process, and proposed potential research area in W/D emulsion fuel study. There is an inconsistency in the results reported from previous studies especially for the thermal efficiency, brake power, torque and specific fuel consumption. However, it is agreed by most of the studies that W/D does result in an improvement in these measurements when the total amount of diesel fuel in the emulsion is compared with that of the neat diesel fuel. NOx and PM exhaust gas emissions are greatly reduced by using the W/D emulsion fuel. Unburnt hydrocarbon (UHC) and carbon monoxide (CO) exhaust emissions are found to be increased by using the W/D emulsion fuel. The inconsistency of the experimental result can be related to the effects of the onset and the strength of the micro-explosion process. The factors that affect these measurements consist of the size of the dispersed water particle, droplet size of the emulsion, water-content in the emulsion, ambient temperature, ambient pressure, type and percentage of surfactant, type of diesel engine and engine operating conditions. Durability testing and developing the fuel production device that requires no/less surfactant are the potential research area that can be explored in future.
TL;DR: In this article, the effect of DF operating mode on combustion characteristics, engine performances and pollutants emissions of an existing diesel engine using natural gas as primary fuel and neat diesel as pilot fuel, has been examined.
TL;DR: In this paper, an experimental investigation of the antioxidant addition effect on engine performance and emission characteristics is presented, which shows that the addition of antioxidants increased oxidation stability without causing any significant negative effect of physicochemical properties.
TL;DR: In this paper, the effect of using n-butanol in vegetable oil-diesel fuel blends on engine performance and exhaust emissions of a direct injection diesel engine operating at full load (100% throttle conditions) with different engine speeds without any engine modification was evaluated.
TL;DR: In this paper, a short review of the technologies that increase the heat transfer in HEXs is introduced and the availability of using them in the exhaust of engines is evaluated and finally a complete review of different heat exchangers which previously were designed for increasing the exhaust waste heat recovery is presented.
Abstract: In this paper, after a short review of waste heat recovery technologies from diesel engines, the heat exchangers (HEXs) used in exhaust of engines is introduced as the most common way. So, a short review of the technologies that increase the heat transfer in HEXs is introduced and the availability of using them in the exhaust of engines is evaluated and finally a complete review of different HEXs which previously were designed for increasing the exhaust waste heat recovery is presented. Also, future view points for next HEXs designs are proposed to increase heat recovery from the exhaust of diesel engines.
TL;DR: In this article, a single-screw expander with 155mm diameter screw has been developed, and an aluminum multi-channel parallel type condenser has also been developed with weight of 147 kg and 78 kg, respectively.
TL;DR: In this article, the possibility of using, in Diesel engines, a liquid fuel derived from waste synthetic polymeric matrices, such as scrap tyres, was evaluated in a preliminary engine investigation was carried out on a 440 cm 3 single-cylinder Diesel engine using two tyre pyrolysis oil (TPO)-Diesel blends: TPO20 (containing 20% TPO and 80% of DF in volume basis) and TPO40.
TL;DR: In this paper, an experimental study was conducted on a four-cylinder diesel engine to evaluate the performance and emission characteristics of Jatropha biodiesel blends with and without the addition of N,N'-diphenyl-1,4-phenylenediamine (DPPD) antioxidant.
TL;DR: In this paper, a 10kW, horizontal, single-cylinder, four-stroke, and direct-injection diesel engine is employed under a full load and varying speed conditions.
TL;DR: In this article, the biogas was used as an alternative gaseous fuel in a DI (direct injection) diesel engine, in the dual fuel mode, and compared with those of diesel operation.
TL;DR: In this paper, an experimental investigation on engine performance, emissions, combustion and vibration characteristics with coconut biodiesel fuels was conducted in a high-pressure common-rail diesel engine under five different load operations.
TL;DR: In this paper, a set of dual-loop organic Rankine cycle (ORC) system is designed to recover exhaust energy, waste heat from the coolant system, and released heat from turbocharged air in the intercooler of a six-cylinder diesel engine.
TL;DR: In this article, the authors evaluated the BSFC, engine power, exhaust and noise emission characteristics of a combined palm and jatropha blend in a singlecylinder diesel engine at different engine speeds ranging from 1400 to 2200 rpm.