Performance Of Single Cylinder Diesel Engine Research Articles

Experimental and feasibility study on nano blended waste plastic oil based diesel engine at various injection pressure: A value addition for disposed plastic food containers

Fuel obtained from waste plastic has been used in this study due to the lavish consumption, and non-stop price hiking made the researchers focus on finding a suitable substitute for conventional fuel. The plastics were non-biodegradable, and also its continuous usage in our daily life together created awareness about waste plastic management among us. With this, plastic oil could be a promising alternative fuel and also solves the issue of seating waste plastics in landfills. Even though plastic oil has a closer calorific value and viscosity to diesel, its volatility is less than diesel. In order to improve its volatility, a titanium dioxide oxide nanoparticle of 50 ppm, 100 ppm, and 150 ppm was doped. A single-cylinder diesel engine's performance, emission, and combustion phenomena were tested with nano blended waste plastic oil at three different fuel injection pressure of 210, 230 and 250 bar, respectively and the results were analyzed. An improvement in engine characteristics was recorded for nanoparticle blended fuels. High nozzle opening pressure improves the spray penetration inside the engine cylinder, promoting the combustion quality. The study concluded that blending 150 ppm Titanium-dioxide with waste plastic oil would be a suitable alternative for diesel engines operating at 230 bar of injection pressure.

WITHDRAWN: Effects of CuO nano additives on performance and emission characteristics of Putranjiva biodiesel

The Putranjiva biodiesel blend’s impact combined with copper oxide nanoparticles on a single-cylinder diesel engine's performance and emission characteristics was considered in the present research. At dosing levels of 25 ppm, 50 ppm, 75 ppm, and 100 ppm, respectively, copper oxide nanoparticles were chosen as fuel additives, and a biodiesel blend is prepared by mixing 80 percent diesel and 20 percent biodiesel Putranjiva. The research study noted that the presence of a highly reactive surface prompted chemical reactivity, resulting in improved combustion. The biodiesel blend’s distributed nanoparticles’ brake thermal efficiency and specific fuel consumption improved. Incomplete combustion products such as carbon monoxide, unburnt hydrocarbon, and smoke density have also substantially decreased.

NOx Emissions Control for Small Single-cylinder Diesel Engine Using Exhaust Gas Recirculation Strategy

Small Diesel engines pose a very tough challenge of simultaneously meeting NOx and particulate matter (PM) emissions, without hampering performance and fuel consumption. Frequent revision in small diesel engines pose a very tough challenge of simultaneously meeting NOx and PM emissions, without hampering performance and fuel consumption. Frequent revision in emission norms for small diesel engines makes it further difficult, as they need to be upgraded in design and for combustion. These small, low-capacity engines are predominantly used in specific regions/countries where cost plays a major role and hence these engines lack a clear emission reduction strategy. It is required to develop an emission reduction strategy considering available technologies and cost implications. Current research work aims to develop a cost-effective emission reduction strategy by modifying the engine using conventional technologies. The present work is an experimental study of the effect of cylinder head Swirl, static injection timing (SIT), intake valve opening (IVO), and Exhaust gas recirculation (EGR) on a 0.4 l single-cylinder diesel engine's performance and emission. Baseline vehicle has HC+NOx and PM emission levels are 0.61 g/kM and 0.04 g/KM, respectively; which is higher considering existing and upcoming emission norms. The lower Swirl cylinder head, advanced IVO timings with retarded injection timings shows an 18% reduction in NOx emission with a 3% improvement in performance at the engine dynamometer. Different EGR rates were also studied and effects were analyzed on emission and fuel consumption and emissions. EGR rate of 25% with advanced IVO of 16° with SIT of 5° and 1.9 Swirl cylinder head had shown 48% improvement in HC+NOx emissions, 20% improvement in PM emission, and 11% improvement on CO emissions at the Chassis dynamometer.

TAIZAC -TAndem Injectors Zapping ACtivation- for Thermal Efficiency Improvement of Diesel Engine

<div class="section abstract"><div class="htmlview paragraph">In order to explore the potential of thermal efficiency improvement of diesel engines with injection rate shaping, TAIZAC (TAndem Injectors Zapping ACtivation) injector consisting of commercially available two common-rail injectors was developed in-house. A simple architecture adopted for TAIZAC injector consists of an upper injector connected to a high pressure source, a lower injector injecting into the cylinder and sealing parts between the two injectors. A fast response piezo-actuated injector (G3P) was employed as the upper one with an additionally drilled large axial orifice for faster fuel supply. A solenoid-actuated injector (G4S) was employed as the lower one for its applicability to inner volume reduction by body cut. Control of injection timing and duration of the upper injector realized not only the originally targeted inversed-delta injection rate shaping, but also sharper rise of initial injection rate and modulation of injection pressure among and during multi-injection pulses. Single cylinder diesel engine performance tests were conducted to demonstrate the effects of a combination of 100MPa low pressure pre and pilot injections, sharper rise of initial injection rate and inversed-delta rate shaping for 200MPa high pressure main injection. Compared to the case of conventional G4S injector, TAIZAC injector case exhibited 1.4pt improvement of indicated thermal efficiency mainly due to 2.3pt reduced cooling loss.</div></div>

Influence of Nanoparticles on the Performance and Emission Characteristics of Diesel Engine Fuelled with Chicken Biodiesel

The present experimental study examines the impact of aluminium oxide nanoparticles (ALN) as additives in chicken waste oil biodiesel on a single cylinder diesel engine performance and emission characteristics. Different dosage of ALN was blended with chicken biodiesel (CB) using ultrasonic mixing in 200th by volume of biodiesel. The performance and exhaust emissions were evaluated using 100ppm, 150ppm and 200ppm aluminium oxide nanoparticles dosages blended chicken biodiesel for different brake power at a constant speed of 1500rpm and compared the results with diesel(B0) and 20% by volume of chicken biodiesel (CB20). Increased brake thermal efficiency and reduced brake specific fuel consumption were observed with the addition of aluminium oxide nanoparticles as compared to biodiesel blend and diesel at 3/4th of load. Also, reduced emissions hydrocarbon and carbon monoxide and increased NOX with ALN at full load. Overall, biodiesel with aluminium oxide nanoparticles improved the diesel engine performance and emissions characteristics with a slight increase in NOX.

Effect of hydrogen addition on performance, emission, and combustion characteristics of Deccan hemp oil and its methyl ester–fuelled CI engine

A vegetable oil-fueled diesel engine operation is characterized by low brake thermal efficiency and relatively high smoke emission. Conversion of vegetable oil to biodiesel results in slight improvement in efficiency and smoke emission, but the values are not comparable with diesel. In this work, a single-cylinder diesel engine's performance is evaluated by inducting hydrogen in small quantities in the intake manifold along with Deccan hemp oil (DHO) and its methyl ester (DHOME) as the pilot fuel. The tests were conducted at part-load and full-load conditions at an engine speed of 1500rpm. Results indicate an increase in brake thermal efficiency from 29.7 to 32.6% and from 27.3 to 29.6% at full load with hydrogen-induced DHOME and DHO engine operation. Unburned-hydrocarbon emissions, carbon monoxide emission, and smoke emission reduced for both the fuels. However, NOx levels increased for the two fuels because hydrogen induction causes high combustion rates and high temperature in the combustion chamber. Hydrogen induction leads to high premixed combustion resulting in high peak pressures.

A GRNN based frame work to test the influence of nano zinc additive biodiesel blends on CI engine performance and emissions

Environmental friendly fuels have increasing demand in the field of automotive industry. Hybridizing with biodiesel and addition of nanoparticles are two evident techniques to improve the performance and to control the hazardous emissions. Combination of appropriate weight fractions of nanoparticles, biodiesel, and diesel further optimize the engine outcomes. The present work aims at investigating the effect of zinc oxide (ZnO) nanoparticles suspensions in diesel and Mahua biodiesel blended fuel on single cylinder diesel engine performance characteristics. Experimental tests are performed with neat diesel fuel, biodiesel blends and ZnO added biodiesel blends. The results indicate that ZnO particulate addition yields favorable performance and emission control of the engine. A generalized regression neural network (GRNN) is implemented for predicting the performance and emissions of the engine at various operating conditions based on the experimental results. The neural network predictions are corroborated with the experimental results and are found in good agreement. A classical differential evolution algorithm (DEA) is further used on the network model to find out optimal combination of nanoparticles, biodiesel and diesel and proven through experimental validation.

Effect of emulsified fuels based on fatty acid distillates on single cylinder diesel engine performance and exhaust emissions

In this contribution an experimental investigation concerning the effect of emulsified fuels based on fatty acid distillates (FAD) on a single cylinder diesel engine performance and exhaust emissions was investigated. The single cylinder diesel engine assessment was conducted under selected test conditions, fixing the engine speed and varying the load. Emulsified fuels were formulated using blends of fatty acid distillates in diesel fuel as continuous phase, as well as deionized water as dispersed phase and Nonyl phenol with 8mol of ethylene oxide as surfactant. Over these conditions the brake specific fuel consumption (BSFC), brake thermal efficiency (BTE), ignition delay (ID), rate of heat release (ROHR), cumulative heat release, nitrogen oxides (NOx), carbon monoxide (CO) and unburned hydrocarbons (HC) were analyzed. The results indicate that the use of emulsified fuels produce increases in the specific fuel consumption and decreases in the brake thermal efficiency for emulsions compared to diesel fuel and a blend of 30% FAD in diesel. On the other hand, later starts of combustion and retarded ROHR for emulsified fuels compared to diesel fuel and a blend of 30% FAD in diesel were obtained. Further, lower NOx and higher HC and CO emissions for emulsified fuels were reported.

A Stability and Performance Study of Ethanol-Diesel Microemulsion Fuel

This experimental study was carried out to determine the feasibility of utilizing renewable bioethanol as an oxygenated fuel additive with petrodiesel. The ethanol-diesel fuel blends stabilized by adding surfactants (biodiesel or span 80) were checked for their physical stability at varying surfactant concentration and the dispersion destabilization was detected by Turbiscan. The most stable blends were tested for their physical properties in accordance with ASTM standards and the performance of single-cylinder diesel engine was determined when fueled with ethanol-diesel stabilized blends.

Effect of Gasoline Fumigation on Diesel Engine Performance and Emissions

The present study investigates theoretically the effects of gasoline fumigation on single-cylinder diesel engine performance and emissions. The results indicate that a premixed charge can be obtained by early injection of gasoline because of the high volatility of gasoline. More homogenous mixture was obtained and the fuel burned faster and efficient. The smoke emission was reduced and engine output was increased. Coupling with EGR technique could reduce the NOx emissions simultaneously.

Experimental and Theoretical Investigation of the Effects of Gasoline Blends on Single-Cylinder Diesel Engine Performance and Exhaust Emissions

The present study investigates experimentally and theoretically the effects of using of gasoline−diesel fuel blends on single-cylinder diesel engine performance and exhaust emissions. The study consists of two parts: (i) Experimental study: The effects of using of different gasoline−diesel fuel blends have been investigated experimentally and compared in a single-cylinder diesel engine. In this part, the effects of 2−10% gasoline blends have been investigated experimentally in a single-cylinder diesel engine at the speeds of 900−1600 rpm and at the selected compression ratios of 18−23. (ii) Theoretical study: A computer program has been developed for the prediction of diesel engine cycles and engine characteristics for the cases of neat diesel fuel (NDF) and gasoline−diesel fuel blends. For calculation of the diesel engine cycle, a quasi-dimensional phenomenological combustion model developed by Shahed and then improved by Ottikkutti has been used and modified with new assumptions. After the engine cycle ...

The potential of using vegetable oil fuels as fuel for diesel engines

Vegetable oils are produced from numerous oil seed crops. While all vegetable oils have high energy content, most require some processing to assure safe use in internal combustion engines. Some of these oils already have been evaluated as substitutes for diesel fuels. The effects of vegetable oil fuels and their methyl esters (raw sunflower oil, raw cottonseed oil, raw soybean oil and their methyl esters, refined corn oil, distilled opium poppy oil and refined rapeseed oil) on a direct injected, four stroke, single cylinder diesel engine performance and exhaust emissions was investigated in this paper. The results show that from the performance viewpoint, both vegetable oils and their esters are promising alternatives as fuel for diesel engines. Because of their high viscosity, drying with time and thickening in cold conditions, vegetable oil fuels still have problems, such as flow, atomization and heavy particulate emissions.