Investigation on the Combustion and Emission Characteristic of Diesel Engine with EGR

2011 ◽  
Vol 464 ◽  
pp. 668-671 ◽  
Author(s):  
Bi Feng Yin ◽  
Zhen Wei Xu ◽  
Jiang Guang He ◽  
Yi Xu ◽  
Yong Qiang Li
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Inflection Point ◽  
Load Condition ◽  
Pressure Rise ◽  
Emission Characteristic ◽  
Common Rail System ◽  
Instantaneous Rate ◽  
Light Load ◽  
Load Rate

Based on a diesel engine with common rail system, influence of EGR on combustion and emission characteristic were investigated. The test results show that EGR can cut down both cylinder pressure and the rate of pressure rise, which leads to the depression of instantaneous rate of heat release and combustion temperature and the extension of the whole combustion period.EGR make effective improvements on reducing NOx emissions in all the operating modes. In light load condition CO and HC emissions take a favorable turn with larger EGR rate, SOOT and fuel consumption are well maintained. In moderate and heavy load condition, the curve of HC ,CO emissions assume “hook-like”, which is get down first and then steep rise. SOOT is well maintained before the inflection point but get deteriorate after the point. As the working load rate of the engine become heavier, the rate of EGR whose inflection point located becomes smaller and the fuel consumption turn out to be worse.

scholarly journals Effects of Specific Fuel Consumption and Exhaust Emissions of Four Stroke Diesel Engine with CuO/Water Nanofluid as Coolant

2017 ◽  
Vol 64 (1) ◽  
pp. 111-121 ◽  
Author(s):  
S. Senthilraja ◽  
KCK. Vijayakumar ◽  
R. Gangadevi
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Load Condition ◽  
Exhaust Emissions ◽  
Cuo Nanoparticles ◽  
Specific Fuel Consumption ◽  
Gas Temperature ◽  
Step Method ◽  
Series Of Experiments ◽  
Exhaust Gas Temperature

Abstract This article reports the effects of CuO/water based coolant on specific fuel consumption and exhaust emissions of four stroke single cylinder diesel engine. The CuO nanoparticles of 27 nm were used to prepare the nanofluid-based engine coolant. Three different volume concentrations (i.e 0.05%, 0.1%, and 0.2%) of CuO/water nanofluids were prepared by using two-step method. The purpose of this study is to investigate the exhaust emissions (NOx), exhaust gas temperature and specific fuel consumption under different load conditions with CuO/water nanofluid. After a series of experiments, it was observed that the CuO/water nanofluids, even at low volume concentrations, have a significant influence on exhaust emissions. The experimental results revealed that, at full load condition, the specific fuel consumption was reduced by 8.6%, 15.1% and 21.1% for the addition of 0.05%, 0.1% and 0.2% CuO nanoparticles with water, respectively. Also, the emission tests were concluded that 881 ppm, 853 ppm and 833 ppm of NOx emissions were observed at high load with 0.05%, 0.1% and 0.2% volume concentrations of CuO/water nanofluids, respectively.

The Emission Performance Research and Analysis of Diesel Engine Fueled with Biodiesel Hybrid Fuel

2012 ◽  
Vol 610-613 ◽  
pp. 1501-1504
Author(s):  
Gui Fu Wu ◽  
Ji Yi Luan ◽  
Yuan Hua Jia ◽  
Dong Hua Jiang
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Load Condition ◽  
Biodiesel Fuel ◽  
Smoke Emission ◽  
Emission Performance ◽  
Full Load ◽  
Consumption Ratio ◽  
Performance Research

Biodiesel can be made from the esterification with plant or animal fat.It has been being paid more and more attention for its characteristics of non-sulphur, non-arene,higher hexadecane and biodegradablity and renewablity Biodiesel is similar to No.0 diesel in characteristics,so it can be applied to engines directly without changing the structure.This article shows the emission performance of diesel mixed with biodiesel fuel which in different proportion,and its CO, HC and smoking exhaust have been decreased greatly,then NOx increase slightly,while the fuel-consumption ratio remains stable(when on full load condition,5%, 15% and25% of hybrid fuel compared with pure diesel fuel,HC emission decreases by 15%,33.3% and 83.3%,and carbon smoke emission decreases by 16.25%,51.8% and 63.6%).

Study on Combustion and Emission Characteristics of Acidic Oil Biodiesel

2014 ◽  
Vol 541-542 ◽  
pp. 982-988
Author(s):  
Jian Wu ◽  
Yang Hua ◽  
Zhan Cheng Wang ◽  
Li Li Zhu ◽  
Hong Ming Wang
Keyword(s):  
Diesel Engine ◽  
Load Condition ◽  
Pressure Rise ◽  
High Load ◽  
Emission Characteristics ◽  
Combustion Heat ◽  
Pressure Maximum ◽  
High Load Condition ◽  
Blended Fuel ◽  
Hc Emissions

In order to develop a new fuel alternative for the diesel engine, experiment of combustion and emission characteristics was carried on a high pressure common rail diesel engine fueled with diesel and acidic oil biodiesel blends, then the results were compared and analyzed. The results indicate that after adding acidic oil biodiesel, the ignition delay is prolonged, combustion pressure, maximum rate of pressure rise and maximum combustion temperature all increase. The maximum combustion heat release rate of blended fuel is higher than diesel at low and middle loads, and lower at high load condition. Compared with diesel, HC emissions of blends decrease dramatically with the increases of blending ratio. NOX emissions of blends are slightly higher than diesel. CO emissions of blends are almost the same as that of diesel. According to the results, acidic oil biodiesel has wide application prospects as an alternative fuel.

Effects of Exhaust Gas Recirculation on Fuel Consumption

1981 ◽  
Vol 195 (1) ◽  
pp. 369-376 ◽  
Author(s):  
Y Nakajima ◽  
K Sugihara ◽  
Y Takagi ◽  
S Muranaka
Keyword(s):  
Fuel Consumption ◽  
Fuel Economy ◽  
Load Condition ◽  
Dissociation Rate ◽  
Gas Temperature ◽  
Specific Heats ◽  
Light Load ◽  
Combustion Duration ◽  
Gas Recirculation ◽  
Burn Through

The effects of EGR on fuel consumption were analysed quantitatively in terms of factors improving and deteriorating fuel economy through experiments as well as thermodynamic calculations. To examine the effects of combustion duration on fuel economy under heavy EGR, experiments were performed with three engine variations. In calculation models, changes in specific heats, heat transfer rate, and dissociation rate caused by changes in gas temperature were considered. In conclusion, it may be stated that reductions of pumping loss, cooling loss, and dissociation were found to be improving factors, where the contribution ratio was approximately 4.5:4.0:1.5. The sum of calculated fuel economy gain increased steadily as the EGR increased, and reached more than 10 per cent at a 20 per cent EGR under light load condition. On the other hand, a major deteriorating factor was found to be a combustion fluctuation. This combustion fluctuation could be significantly reduced by achieving a ‘fast burn’ through increased turbulence and/or dual point ignition.

scholarly journals Effects of Different Mixture Ratios of Methanol-Diesel on the Performance Enhancement and Emission Reduction for a Diesel Engine

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1366
Author(s):  
Zhiqing Zhang ◽  
Jie Tian ◽  
Jiangtao Li ◽  
Hongchen Ji ◽  
Dongli Tan ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Negative Impact ◽  
Specific Fuel Consumption ◽  
Emission Characteristic ◽  
Emission Characteristics ◽  
Brake Specific Fuel Consumption ◽  
Cylinder Pressure ◽  
Mixed Fuel

To improve the combustion and emission characteristics of diesel engines, methanol-diesel fuels with different mixing ratios (DM0, DM10, DM20, DM30, and DM40) were used to investigate the effects of methanol addition on the combustion and emission of a four-stroke diesel engine in terms of cylinder pressure, brake power, brake-specific fuel consumption, and nitrogen oxides, soot, and carbon monoxide emissions. Firstly, an improved entire diesel engine model was developed using AVL-BOOST software and validated by the experimental results. The results showed that the increase of methanol content in the fuel mixture had a negative impact on the performance characteristic of the diesel engine, but significantly improved the emission characteristic of the diesel engine. With the methanol ratio in the mixed fuel increased to 10%, 20%, 30%, and 40%, the cylinder pressure of the engine increased by 0.89%, 1.48%, 2.29%, and 3.17%, respectively. However, the power decreased by 3.76%, 6.74%, 11.35%, and 15.45%, the torque decreased by 3.76%, 6.74%, 11.35%, and 15.45%, respectively, and the brake specific fuel consumption increased by 3.77%, 6.92%, 12.33%, and 17.61%, respectively. In addition, with the methanol ratio in the mixed fuel increased to 10%, 20%, 30%, and 40%, the carbon monoxide emission decreased by 21.32%, 39.04%, 49.81%, and 56.59% and the soot emission decreased by 0.25%, 8.69%, 16.81%, and 25.28%, respectively. Therefore, the addition of methanol to the fuel can improve the combustion and emission characteristics of the engine.

scholarly journals Evaluation of engine performance, emissions, of a twin cylinder diesel engine fuelled with waste plastic oil and diesel blends with a fraction of methanol

2014 ◽  
Vol 3 (2) ◽  
pp. 123 ◽  
Author(s):  
Y. Tarun ◽  
C. Thamotharan ◽  
K. Mukherjee
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Thermal Efficiency ◽  
Specific Energy Consumption ◽  
Alternative Fuel ◽  
Emission Characteristic ◽  
Waste Plastic ◽  
Waste Plastic Oil ◽  
Blended Fuel

A comprehensive study on the methanol and waste plastic oil as an alternative fuel has been carried out. This report deals with the exhaust emission of waste plastic fuel on twin cylinder diesel engine. The objectives of this report are to analyse the fuel consumption and the emission characteristic of a twin cylinder diesel engine that are using waste plastic oil compared to usage of ordinary diesel that are available in the market. This report describes the setups and the procedures for the experiment which is to analyse the emission characteristics and fuel consumption of diesel engine due to usage of the both fuels. Detail studies about the experimental setup and components have been done before the experiment started. Data that are required for the analysis is observed from the experiments. Calculations and analysis have been done after all the required data needed for the thesis is obtained. The experiment used diesel engine with no load which means no load exerted on it. A four stroke Twin cylinder diesel engine was adopted to study the brake thermal efficiency, brake specific energy consumption, mechanical efficiency, brake power, volumetric efficiency, indicated thermal efficiency and emissions at full load with the fuel of fraction methanol in bio-diesel. In this study, the diesel engine was tested using methanol blended with bio-diesel at certain mixing ratios of (WPO: Diesel) 20:80, 40:60 and 60:40 methanol to bio-diesel respectively. By the end of the report, the successful of the project have been started which is Kirloskar engine is able to run with waste plastic oil (WPO) but the engine needs to run by using diesel fuel first, then followed by waste plastic oil and finished with diesel fuel as the last fuel usage before the engine turned off. The performance of the engine using blended fuel compared to the performance of engine with diesel fuel. Experimental results of blended fuel and diesel fuel are also compared. Keywords: Alternative Fuel, Waste Plastic Oil (WPO), Diesel, Methanol, Performance, Emissions, Pyrolysis.

DIESEL ENGINE OPERATION IN USE OF FUEL WITH ADDITIVES

2018 ◽  
pp. 18-24
Author(s):  
Petar Kazakov ◽  
Atanas Iliev ◽  
Emil Marinov
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Studies ◽  
Combustion Engines ◽  
Engine Operation ◽  
Factors Affecting ◽  
Operating Modes ◽  
Positive Effects

Over the decades, more attention has been paid to emissions from the means of transport and the use of different fuels and combustion fuels for the operation of internal combustion engines than on fuel consumption. This, in turn, enables research into products that are said to reduce fuel consumption. The report summarizes four studies of fuel-related innovation products. The studies covered by this report are conducted with diesel fuel and usually contain diesel fuel and three additives for it. Manufacturers of additives are based on already existing studies showing a 10-30% reduction in fuel consumption. Comparative experimental studies related to the use of commercially available diesel fuel with and without the use of additives have been performed in laboratory conditions. The studies were carried out on a stationary diesel engine СМД-17КН equipped with brake КИ1368В. Repeated results were recorded, but they did not confirm the significant positive effect of additives on specific fuel consumption. In some cases, the factors affecting errors in this type of research on the effectiveness of fuel additives for commercial purposes are considered. The reasons for the positive effects of such use of additives in certain engine operating modes are also clarified.

STUDI PENENTUAN KOMPOSISI OPTIMUM CAMPURAN BAHAN BAKAR BIODIESEL–PETRODIESEL

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Soni S. Wirawan dkk
Keyword(s):  
Carbon Monoxide ◽  
Particulate Matter ◽  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Cetane Number ◽  
Price Policy ◽  
Oxides Of Nitrogen ◽  
Fuel Price ◽  
Biodiesel Blend

Biodiesel is a viable substitute for petroleum-based diesel fuel. Its advantages are improved lubricity, higher cetane number and cleaner emission. Biodiesel and its blends with petroleum-based diesel fuel can be used in diesel engines without any signifi cant modifi cations to the engines. Data from the numerous research reports and test programs showed that as the percent of biodiesel in blends increases, emission of hydrocarbons (HC), carbon monoxide (CO), and particulate matter (PM) all decrease, but the amount of oxides of nitrogen (NOx) and fuel consumption is tend to increase. The most signifi cant hurdle for broader commercialization of biodiesel is its cost. In current fuel price policy in Indonesia (especially fuel for transportation), the higher percent of biodiesel in blend will increase the price of blends fuel. The objective of this study is to assess the optimum blends of biodiesel with petroleum-based diesel fuel from the technically and economically consideration. The study result recommends that 20% biodiesel blend with 80% petroleum-based diesel fuel (B20) is the optimum blend for unmodifi ed diesel engine uses.Keywords: biodiesel, emission, optimum, blend

scholarly journals Investigation of Effect on Environmental Performance of Using LNG as Fuel for Engines in Seaport Tugboats

2021 ◽  
Vol 9 (2) ◽  
pp. 123
Author(s):  
Sergejus Lebedevas ◽  
Lukas Norkevičius ◽  
Peilin Zhou
Keyword(s):  
Diesel Engine ◽  
Natural Gas ◽  
Baltic Sea ◽  
Impact Assessment ◽  
Fuel Consumption ◽  
Dual Fuel ◽  
Nox Emissions ◽  
The Baltic Sea ◽  
Emission Analysis ◽  
The Baltic

Decarbonization of ship power plants and reduction of harmful emissions has become a priority in the technological development of maritime transport, including ships operating in seaports. Engines fueled by diesel without using secondary emission reduction technologies cannot meet MARPOL 73/78 Tier III regulations. The MEPC.203 (62) EEDI directive of the IMO also stipulates a standard for CO2 emissions. This study presents the results of research on ecological parameters when a CAT 3516C diesel engine is replaced by a dual-fuel (diesel-liquefied natural gas) powered Wartsila 9L20DF engine on an existing seaport tugboat. CO2, SO2 and NOx emission reductions were estimated using data from the actual engine load cycle, the fuel consumption of the KLASCO-3 tugboat, and engine-prototype experimental data. Emission analysis was performed to verify the efficiency of the dual-fuel engine in reducing CO2, SO2 and NOx emissions of seaport tugboats. The study found that replacing a diesel engine with a dual-fuel-powered engine led to a reduction in annual emissions of 10% for CO2, 91% for SO2, and 65% for NOx. Based on today’s fuel price market data an economic impact assessment was conducted based on the estimated annual fuel consumption of the existing KLASCO-3 seaport tugboat when a diesel-powered engine is replaced by a dual-fuel (diesel-natural gas)-powered engine. The study showed that a 33% fuel costs savings can be achieved each year. Based on the approved methodology, an ecological impact assessment was conducted for the entire fleet of tugboats operating in the Baltic Sea ports if the fuel type was changed from diesel to natural gas. The results of the assessment showed that replacing diesel fuel with natural gas achieved 78% environmental impact in terms of NOx emissions according to MARPOL 73/78 Tier III regulations. The research concludes that new-generation engines on the market powered by environmentally friendly fuels such as LNG can modernise a large number of existing seaport tugboats, significantly reducing their emissions in ECA regions such as the Baltic Sea.

scholarly journals Assessment of an electrical coolant pump on a heavy-duty diesel engine

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Markus Kiesenhofer
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Carbon Dioxide Emissions ◽  
Test Bench ◽  
Engine Test ◽  
The European Union ◽  
Engine Test Bench ◽  
Commercial Vehicles ◽  
Coolant Pump ◽  
Vehicle Class

AbstractHybridization of the drive train in commercial vehicles is a key solution toward meeting the strict future requirements to reduce carbon dioxide emissions within the European Union. In order to decrease fleet consumption a large number of different hybrid systems are already available in series in the passenger car sector. Due to the cheap and powerful 48 volt hybrid components and the lower hazard potential compared to high voltage, future commercial vehicles could also benefit from the 48V technology and contribute to lower fleet fuel consumption. Therefore, a complete 48V mild hybrid system was built on the diesel engine test bench as part of a research project. This paper highlights the utilization of a powerful 48V-motor to propel the coolant pump on a diesel engine of the 13-L commercial vehicle class. Three different drive variants of the coolant pump were implemented and measured on the diesel engine test bench. MATLAB®/Simulink®-simulations were conducted to assess the possible fuel savings in three different driving cycles. This paper provides a summary and interpretation of the measurement and simulation results. The simulation studies predict a decrease of fuel consumption of up to 0.94%. Furthermore, the additional advantages of electrified coolant pumps based on 48V are discussed.

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