scholarly journals A study of hydrogen fuel impact on compression ignition engine performance

2018 ◽  
Vol 234 ◽  
pp. 03001 ◽  
Author(s):  
Evgeni Dimitrov ◽  
Boyko Gigov ◽  
Spas Pantchev ◽  
Philip Michaylov ◽  
Mihail Peychev
Keyword(s):  
Carbon Dioxide ◽  
Nitrogen Oxides ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Carbon Dioxide Concentration ◽  
Hydrogen Gas ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Exhaust Gases ◽  
The Impact

In this paper, a dual-fuel compression ignition engine test bench is presented. In hydrogen-diesel fuel co-combustion conditions, the engine parameters are determined – performance: effective torque, effective power and mean effective pressure; fuel economy: fuel consumption and specific fuel consumption; toxicity: carbon monoxide, carbon dioxide, nitrogen oxides, hydrocarbons, and smoke emissions (opacity). The impact of hydrogen-diesel fuel mass ratio on the performance, toxicity and economy of the engine is studied by obtaining a series of hydrogen-diesel fuel ratio variation characteristics at constant engine speed and load. Improvement of the economical parameters of the engine and reduction of carbon dioxide concentration in exhaust gases is detected under operation with hydrogen gas fuel. Significant reduction of the exhaust gases opacity is observed. It is not clear what the impact of the quantity of hydrogen, injected in the engine, on the concentration of nitrogen oxides in the exhaust gases is.

INVESTIGATION ON CHARACTERISTICS OF POME BLENDED DIESEL ENGINE

2015 ◽  
Vol 75 (8) ◽  
Author(s):  
Helmisyah Ahmad Jalaludin ◽  
Mohd Ruysdi Ramliy ◽  
Nik Rosli Abdullah ◽  
Salmiah Kasolang ◽  
Shahrir Abdullah ◽  
...  
Keyword(s):  
High Temperature ◽  
Combustion Chamber ◽  
Fuel Consumption ◽  
Oxygen Content ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Sudden Increase ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Complete Combustion

The sudden increase in fuel prices due to diminishing petroleum resources and the pollution resulting from its use has resulted in research into alternative fuels such as biodiesel. In addition, the faster combustion and high temperature in the combustion chamber which results from petroleum diesel fuel leads to higher nitrogen oxide (NOx) and Particulate Matter (PM) emissions. Therefore, this research was conducted to investigate the effect of using palm oil methyl ester (POME) blends as alternative fuels on the performance and emission of a compression ignition engine. The performance of POME blends and diesel were compared by manipulating the load of the engine at 1800 rpm. The results obtained show that fuel consumption rate is higher for the POME blends compared to the diesel fuel and increases as the POME concentration increases. The increment of brake specific fuel consumption and the reduction of CO emission exhibit a relation to the increase in percentage of POME. This is mainly contributed by the higher oxygen content of POME which promotes complete combustion of the blends. However, efficient combustion from the blends as compared to diesel fuel resulted from higher oxygen content and cetane number leads to significant increase in exhaust temperature. This in turn increases NOx emissions since using POME blends is highly related to high temperature of combustion chamber. The experimental results proved that POME in compression ignition engine is a possible substitute to diesel.

Experimental Investigation of Performance and Emission Parameters Changes on Diesel Engines Using Anisole Additive

2014 ◽  
Vol 490-491 ◽  
pp. 987-991
Author(s):  
Mustafa Kaan Baltacioğlu ◽  
Kadi̇r Aydin ◽  
Ergül Yaşar ◽  
Hüseyi̇n Turan Arat ◽  
Çağlar Conker ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Specific Fuel Consumption ◽  
Compression Ignition Engine ◽  
Gas Emissions ◽  
Performance And Emission

In this study, effect of anisole additive into the diesel fuel on performance and emission parameters of diesel engines was investigated. Instead of structural changes which are more difficult and expensive, development of fuel technologies is preferred to provide reduction on exhaust gas emissions which are harmful to environment and human health. Therefore, in this experimental study, anisole was used as additive into diesel fuel with the volumetric ratio of 1,5%, 3% and 5%. The performance characteristics and exhaust emissions of a four cylinder, four stroke, naturally aspirated, water cooled, direct injection compression ignition engine fueled with modified fuels were analyzed. Engine was subjected constant speed, full load conditions during tests. Engine power, torque, specific fuel consumption, carbon monoxide, nitrogen oxide and carbon dioxide emissions were measured and results were evaluated. Changes in performance parameters were negligible for all ratios of modified fuels except specific fuel consumption. Finally, while carbon monoxide gas emissions were increased with anisole additive, carbon dioxide and nitrogen oxide gas emissions were decreased.

scholarly journals The Effects of Biodiesel on NOx Emissions for Automotive Transport

2022 ◽  
Vol 24 (1) ◽  
pp. B59-B66
Author(s):  
Ruslana Kolodnytska ◽  
Oleksandr Kravchenko ◽  
Juraj Gerlici ◽  
Kateryna Kravchenko
Keyword(s):  
Carbon Dioxide ◽  
Nitrogen Oxides ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Flame Temperature ◽  
Internal Combustion ◽  
Nox Formation ◽  
Automotive Engine ◽  
The Impact

Automobiles with internal combustion engine using diesel fuel have large harmful emissions of nitrogen oxides and soot, which affect the health of the population and especially children and carbon dioxide, which is dangerous for the planet as a whole. Biodiesel is used in Europe as an additive to diesel fuel to reduce soot emissions (including carcinogens), as well as to improve the balance of carbon dioxide on the planet. Using the biodiesel in internal combustion engines tends to show higher nitrogen oxides emissions compared to diesel. In this paper, the impact of flame temperature, ignition delay and density on NOx formation of biodiesel and its component for both stationary engine and automotive engine were analysed. Emissions of nitrogen oxides increase with increasing load. In no-load modes, biodiesel shows lower emissions of nitrogen oxides than diesel.

Effect of Fuel Pilot Dose Parameters on Efficiency of Dual-Fuel Compression Ignition Engines Fuelled with Biogas

2016 ◽  
Vol 817 ◽  
pp. 19-26 ◽  
Author(s):  
Sławomir Wierzbicki ◽  
Michał Śmieja ◽  
Maciej Mikulski
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Energy Balance ◽  
Diesel Fuel ◽  
Electrical Energy ◽  
Dual Fuel ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Gaseous Fuels ◽  
Compression Ignition Engines

Increasing the share of renewable electrical energy in the overall energy balance is one of the major challenges of humanity. It is primarily connected with global warming and increasing environmental pollution. One of the ways to counteract this problem is to promote the importance of renewable fuels, including gaseous fuels which are relatively low in carbon.This paper presents the effects of selected parameters of a pilot dose of diesel fuel on the efficiency of a dual-fuel compression ignition engine. The dose of gaseous fuel powering the engine was a mixture of methane and carbon dioxide in varying proportions.

Effects of injection strategy on performance and emissions metrics in a diesel/methane dual-fuel single-cylinder compression ignition engine

2019 ◽  
Vol 20 (10) ◽  
pp. 1059-1072 ◽  
Author(s):  
Metin Korkmaz ◽  
Dennis Ritter ◽  
Bernhard Jochim ◽  
Joachim Beeckmann ◽  
Dirk Abel ◽  
...  
Keyword(s):  
Diesel Fuel ◽  
Deep Understanding ◽  
Injection Pressure ◽  
Dual Fuel ◽  
Injection Timing ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Single Cylinder ◽  
Cylinder Compression ◽  
The Impact

In order to counteract the drawbacks of conventional diesel combustion, which can lead to high indicated specific nitric oxide and indicated specific particulate matter emissions, a promising diesel-dual-fuel concept is investigated and evaluated. In this study, methane is used as supplement to liquid diesel fuel due to its benefits like high knock resistance and clean combustion. A deep understanding of the in-cylinder process is required for engine design and combustion controller development. To investigate the impact of different input parameters such as injection duration, injection timing, and substitution rate on varying output parameters like load, combustion phasing, and engine-out emissions, numerous investigations were conducted. Engine speed, global equivalence ratio, and injection pressure were held constant. The experiments were carried out in a modified single-cylinder compression ignition engine. The results reveal regimes with different dependencies between injection timing of diesel fuel and combustion phasing. This work demonstrates the potential of the diesel-dual-fuel concept by combining sophisticated combustion control with the favorable combustion mode. Without employing exhaust gas recirculation, TIER IMO 3 emissions limits are met while ensuring high thermal efficiency.

Following Carbon Dioxide Concentration and Consequences of its Zero Emission on the Environmental Ecosystem

2020 ◽  
Vol 12 (2) ◽  
pp. 110-116
Author(s):  
Amin A. El-Meligi
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Greenhouse Gases ◽  
Carbon Capture And Storage ◽  
Carbon Dioxide Concentration ◽  
Layered Materials ◽  
Hydrogen Gas ◽  
The Earth ◽  
Zero Emission ◽  
The Impact

Background: This research aims to follow the concentration of carbon dioxide (CO2) in the atmosphere and the effect of zero-emission on the ecosystem. CO2 is the most important of the green house gases. Nowadays, the earth is suffering from global warming due to greenhouse gases. The call all over the world is to reduce the emission of the greenhouse gases, mainly CO2. Methods: The research methodology depends on the data of international research laboratories, which follow the concentration of CO2, such as National Oceanic and Atmospheric Administration (NOAA), the USA, and Mauna Loa Observatory in Hawaii. The concern towards CO2 concentration in the atmosphere started in the last century. Results: The industrial revolution did not consider the impact of pollution on the environment. The impact on the environment was noticed only after a clear disturbance in the ecosystem. The emission of greenhouse gases, especially, CO2 is monitored; daily, monthly and yearly. There are different sources of CO2 emissions, such as transportation, factories, burning of forests etc. In fact, CO2 is a harmful as well as a useful gas. It is harmful because of global warming, and useful because of its important role in the photosynthesis process. This process is very crucial for all living things. The research to reduce the emission of CO2. has provided some solutions. Layered materials, MPS3, where M stands for the transition metal, have been used to store hydrogen gas. The hydrogen molecule size is 2.89 Å, and the molecular size of CO2 is 3.3 Å, this means that the CO2 can be captured by the layered materials. The capturing of CO2 is achieved by simulation. Conclusion: We need to reduce the emission of CO2 but not to reach zero emission, because then, there will be no photosynthesis process, which means there will be no life on the earth. Carbon capture and storage is a technology that can capture up to 90% of the CO2, but the biggest obstacle to this approach lies in the inherent thermodynamic stability and kinetic inertness of CO2.

Impact of Binary Biofuel Blend on Lubricating Oil Degradation in a Compression Ignition Engine

2018 ◽  
Vol 141 (3) ◽  
Author(s):  
Paramvir Singh ◽  
S. R. Chauhan ◽  
Varun Goel ◽  
Ashwani K. Gupta
Keyword(s):  
Diesel Fuel ◽  
Technical Problem ◽  
Lubricating Oil ◽  
Engine Fuel ◽  
Compression Ignition ◽  
Endurance Test ◽  
Compression Ignition Engine ◽  
Fuel Blend ◽  
Blended Fuel ◽  
The Impact

This paper presents lubricating oil performance in a compression ignition (CI) engine fueled with a binary fuel blend of 70% aamla seed oil biodiesel and 30% eucalyptus oil (EU) on volume basis. This blended fuel was stable and congruent with engine-fuel system. Initially, the engine was operated with normal diesel fuel as per standard endurance test. The same endurance test was performed with the above binary biodiesel blended fuel in the engine under somewhat modified engine operational condition. The lubricating oil was examined at a specified interval to evaluate the impact of the fuel on lubricating oil properties. Quantification of various metal debris concentrations was carried out using inductive coupled plasma atomic emission spectroscopy. After experimentation, the lubricating oil samples were analyzed using analytical ferrography that showed lower wear debris concentrations from binary biodiesel blend than diesel fuel operated engine. The better lubricating property of binary biodiesel blended fuel resulted in lower wear and improved performance of engine parts. Relatively low wear and concentrations of all metal wear were found in the lubricating oil with binary biodiesel blended fuel engine revealed better performance of engine with this fuel blend. No technical problem was encountered during the long-term endurance tests with the binary biodiesel blended fuel under modified engine parameters.

Analysis of temperature and altitude effects on the Global Energy Balance during WLTC

2021 ◽  
pp. 146808742110342
Author(s):  
Francisco Payri ◽  
Jaime Martín ◽  
Francisco José Arnau ◽  
Sushma Artham
Keyword(s):  
Energy Balance ◽  
Ambient Temperature ◽  
Fuel Consumption ◽  
Experimental Measurements ◽  
Compression Ignition ◽  
Oil Viscosity ◽  
Compression Ignition Engine ◽  
Global Energy ◽  
Global Energy Balance ◽  
L Compression

In this work, the Global Energy Balance (GEB) of a 1.6 L compression ignition engine is analyzed during WLTC using a combination of experimental measurements and simulations, by means of a Virtual Engine. The energy split considers all the relevant energy terms at two starting temperatures (20°C and 7°C) and two altitudes (0 and 1000 m). It is shown that reducing ambient temperature from 20°C to −7°C decreases brake efficiency by 1% and increases fuel consumption by 4%, mainly because of the higher friction due to the higher oil viscosity, while the effect of increasing altitude 1000 m decreases brake efficiency by 0.8% and increases fuel consumption by 2.5% in the WLTC mainly due to the change in pumping. In addition, GEB shows that ambient temperature is affecting exhaust enthalpy by 4.5%, heat rejection to coolant by 2%, and heat accumulated in the block by 2.5%, while altitude does not show any remarkable variations other than pumping and break power.

scholarly journals A Multicomponent Blend as a Diesel Fuel Surrogate for Compression Ignition Engine Applications

2015 ◽  
Vol 137 (11) ◽  
Author(s):  
Yuanjiang Pei ◽  
Marco Mehl ◽  
Wei Liu ◽  
Tianfeng Lu ◽  
William J. Pitz ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Flow Reactor ◽  
Expert Knowledge ◽  
Combustion Model ◽  
Compression Ignition ◽  
Compression Ignition Engine ◽  
Combined Mechanism ◽  
Fuel Surrogate ◽  
Skeletal Mechanism

A mixture of n-dodecane and m-xylene is investigated as a diesel fuel surrogate for compression ignition (CI) engine applications. Compared to neat n-dodecane, this binary mixture is more representative of diesel fuel because it contains an alkyl-benzene which represents an important chemical class present in diesel fuels. A detailed multicomponent mechanism for n-dodecane and m-xylene was developed by combining a previously developed n-dodecane mechanism with a recently developed mechanism for xylenes. The xylene mechanism is shown to reproduce experimental ignition data from a rapid compression machine (RCM) and shock tube (ST), speciation data from the jet stirred reactor and flame speed data. This combined mechanism was validated by comparing predictions from the model with experimental data for ignition in STs and for reactivity in a flow reactor. The combined mechanism, consisting of 2885 species and 11,754 reactions, was reduced to a skeletal mechanism consisting 163 species and 887 reactions for 3D diesel engine simulations. The mechanism reduction was performed using directed relation graph (DRG) with expert knowledge (DRG-X) and DRG-aided sensitivity analysis (DRGASA) at a fixed fuel composition of 77% of n-dodecane and 23% m-xylene by volume. The sample space for the reduction covered pressure of 1–80 bar, equivalence ratio of 0.5–2.0, and initial temperature of 700–1600 K for ignition. The skeletal mechanism was compared with the detailed mechanism for ignition and flow reactor predictions. Finally, the skeletal mechanism was validated against a spray flame dataset under diesel engine conditions documented on the engine combustion network (ECN) website. These multidimensional simulations were performed using a representative interactive flame (RIF) turbulent combustion model. Encouraging results were obtained compared to the experiments with regard to the predictions of ignition delay and lift-off length at different ambient temperatures.

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