Download or read book Study of an Internal Combustion Engine to Burn Hydrogen Fuel and Backfire Elimination Using a Carburetor Fuel Delivery Method written by Shahriyar Garmsiri and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Enrichment in Internal Combustion Engines written by Eddie Allan Jordan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was made to determine the effects of hydrogen enrichment of ethanol at ultra-lean operating regimes utilizing both experimental and computational methods. A 0.745 liter 2-cylinder SI engine was modified to operate on both hydrogen and ethanol fuels. The study looked at part throttle, fixed RPM operation of 0%, 15%, and 30% hydrogen fuel mixtures operating in ultra-lean operating regimes. Data were collected to calculate NO and HC emissions, power, thermal efficiency, volumetric efficiency, brake-specific fuel consumption, and Wiebe burn fraction curves. The data from the experiments were used to develop an empirically based computational engine model utilizing Ricardo's WAVE. Once calibrated, WAVE combustion software was shown to be capable of accurately predicting the results of power and emissions of the ultra-lean hydrogen and ethanol mixtures. It was shown that hydrogen enrichment of ethanol demonstrated an ability to reduce NOx and stabilize and accelerate the combustion process. Both the model and experiments showed that operating near the LOL at both 15% and 30% hydrogen by volume reduced engine out NOx emissions by more than 95% as compared to stoichiometric gasoline operation. This reduction is comparable to the efficiency of modern three-way catalyst and could offer an alternative to current NOx reduction technologies. Power, thermal efficiency, and volumetric efficiency were not affected by the hydrogen mixture at a given equivalence ratio. However, hydrogen addition allowed an increase in the lean operating limit which helped further reduce NOx emissions, but at reduced power and thermal efficiency.
Download or read book Tuning Accel DFI 6 0 Programmable Fuel Injection written by Ray Bohacz and published by Penguin. This book was released on 2003 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to understanding, modifying, programming, and tuning Accel's programmable digital fuel injection system, this book includes sections on Basic Management Theory and Components, Fuel Flow Dynamics, the ECU and Emissions Compliance, Matching Intake Manifold to Engine, Choosing the Proper Accel/DFI ECU, and more.
Download or read book Hydrogen Engine Performance Analysis Project written by Robert R. Adt and published by . This book was released on 1980 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Performance and Cost Evaluation of Internal Combustion Engines for the Destruction of Hydrocarbon Vapors from Fuel contaminated Soils written by Steven R. Archabal and published by . This book was released on 1994 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics based Reduced order Modeling of Fuel Injection and Combustion Processes in Internal Combustion Engines written by Abhishek Y. Deshmukh and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Modification of an Internal Combustion Automotive Engine to Burn Hydrogen as Fuel written by Mark Wayne Myers and published by . This book was released on 1975 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermochemical Fuel Reforming for Reciprocating Internal Combustion Engines written by and published by . This book was released on 2011 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance Emission and Combustion Analysis on Single Cylinder CI Engine Using Dual Bio Diesel with and Without Hydrogen Induction written by Md. Fakhruddin Hasan Nizami and published by . This book was released on 2022-03-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2019 in the subject Engineering - Mechanical Engineering, grade: 10, course: Mechanical Engineering, language: English, abstract: The growing demand and low production of indigenous crude along with inadequate refining capacity has forced India to look for alternative fuels to sustain the economic development. India is one among the largest petro-diesel consuming and importing country i.e. about 70% of its demand. Violently fluctuating world prices of oil have been a destabilizing element for the balance of country's economy and external debt. Centralized power generation are insufficient to encounter energy necessities of decentralized population of rural area, due to low loads, long distribution lines, power shortages, low and fluctuating voltage and low reliability. Decentralized system using renewable sources of energy could go a long way in meeting the energy needs of the decentralized communities. Main source of economy in our country is irrigation. Irrigation has to be developed on a great measure, which requires energy to run various implements. The higher use of petrol/diesel in agronomy and transport sector has resulted in environmental degradation. Alternate fuels are being explored world-wide to reduce environmental pollution. To reduce the reliance on petroleum based fuels, bio-diesels are gaining attention world-wide. In this research work diesel is blended with treble alternate fuels i.e. dual biodiesel and a biofuel, comprising waste cooking oil biodiesel, palm stearin biodiesel and hydrogen, which are tested on single cylinder CI engine for performance, emission and combustion Analysis. Compression ratio and injection opening pressure are varied to get best performance, emission and combustion characteristic. At first dual biodiesel (WCOBD + PSBD) blended in diesel for different proportion will be tested in comparison with diesel as standalone fuel for different compression ratios and fuel injection p
Download or read book A Study of the Heat Transfer in Hydrogen Fueled Internal Combustion Engine written by Khalaf Ibrahim Hamada and published by . This book was released on 2012 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer in the internal-combustion engine is a crucial phenomenon because of it affects the engine performance, efficiency and emissions. The aim of this thesis is to characterize the time-averaged heat-transfer and instantaneous heat-transfer of the direct-injection hydrogen-fueled engine. A one-dimensional model was developed based on the gas dynamic and heat-transfer concepts for characterizing the time-averaged heat-transfer. This model was developed using the real engine specifications with the capabilities of GT-POWER software. The dimensionless analysis for TAHT was performed based on the output results from one-dimensional model. The multidimensional model based on the finite volume approach for characterizing the instantaneous heat-transfer. The structural three-dimensional model was constructed and then discretized using the structured hexahedron mesh. The governing equations for reactive flow with the accompanied physical phenomena were solved numerically. A novel subroutine was integrated to simulate the hydrogen-injection process. Simplified single-step mechanism was considered for estimating the reaction rate of hydrogen oxidation. The modified wall-function was used for resolving the near wall transport. Arbitrary Lagrangian-Eulerian algorithm was adopted for solving the governing equations. Whereas the sub-models were solved utilizing the operator splitting approach, then it was incorporated with the main program. The influences of the engine speed, equivalence ratio and start of injection timing were investigated. Experimental study shows that the time-averaged heat-transfer and instantaneous heat-transfer models are adequately accurate. The equivalence ratio and engine speed were observed to have significant impacts on characteristics of the time-averaged heat-transfer as well as instantaneous heat transfer. It was demonstrated that ignoring the impact of the equivalence ratio on the time-averaged heat-transfer is unjustifiable, especially on the heat-transfer correlation. Accordingly, the equivalence ratio was established in a new correlation form of the time-averaged heat-transfer. The reliability of the newly developed correlation was verified using the Taylor's correlation. The relative error was reduced from 70 % to around 10 %. Thermal field analysis was used for demonstrating the trends of the instantaneous heat transfer. It was observed that there is a crucial distinction between the lean and ultra-lean mixture as well as the engine speed. Furthermore, a non-uniform behavior was found for the impact of the equivalence ratio on the temperature distributions. Moreover, the heat release rate, instantaneous rate of heat loss, cumulative heat loss and heat transfer coefficient were used for monitoring the behaviour of the instantaneous heat transfer. The instantaneous heat transfer parameters were increased around 35% when increasing the equivalence ratio within the range of the finest operation while these parameters are acquired within 10% increase for the entire engine speed range. It can be comprehended that the developed models are powerful tools for estimating the heat transfer of hydrogen-fueled engine. The developed predictive correlation is highly recommended for predicting the heat transfer of hydrogen-fueled engine.
Download or read book Performance of an Internal Combustion Engine Using Mixtures of Gasoline and Hydrogen as the Fuel written by Jerry Price Harkey and published by . This book was released on 1978 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Performance of Hydrogen Fueled Internal Combustion Engines and Vehicles written by Peter Alexander Dennis and published by . This book was released on 2015 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 130 Octane Zero Emissions with Hydrogen written by Roy Union and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Perfect bound, glossy cover, UPC and ISBN barcodes on rear
Download or read book Effects of Supercharging EGR and Variable Valve Timing on Power and Emissions of Hydrogen Internal Combustion Engines written by Takashi Kondo and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study on Mechanism of Backfire in Hydrogen Engines written by Katsuyoshi Koyanagi and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Pathway to Higher Efficiency Internal Combustion Engines Through Thermochemical Recovery and Fuel Reforming written by Flavio Dal Forno Chuahy and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual fuel reactivity controlled compression ignition (RCCI) combustion is a promising method to achieve high efficiency with near zero NOx and soot emissions; however, the requirement to carry two fuels on-board has limited practical applications. Advancements in catalytic reforming have demonstrated the ability to generate syngas (a mixture of CO and hydrogen) from a single hydrocarbon stream. The reformed fuel mixture can then be used as a low reactivity fuel stream to enable RCCI out of a single parent fuel. Beyond enabling dual-fuel combustion strategies out of a single parent fuel, fuel reforming can be endothermic and allow recovery of exhaust heat to drive the reforming reactions, potentially improving overall efficiency of the system. Previous works have focused on using reformed fuel to extend the lean limit of spark ignited engines, and enhancing the control of HCCI type combustion. The strategy pairs naturally with advanced dual-fuel combustion strategies, and the use of dual-fuel strategies in the context of on-board reforming and energy recovery has not been explored. Accordingly, the work presented in this dissertation attempts to fill in the gaps in the current literature and provide a pathway to "single" fuel RCCI combustion through a combination of experiments and computational fluid dynamics modeling. Initially, a system level analysis focusing on three common reforming techniques (i.e., partial oxidation, steam reforming and auto-thermal reforming) was conducted to evaluate the potential of reformed fuel. A system layout was proposed for each reforming technique and a detailed thermodynamic analysis using first- and second-law approaches were used to identify the sources of efficiency improvements. The results showed that reformed fuel combustion with a near TDC injection of diesel fuel can increase engine-only efficiency by 4% absolute when compared to a conventional diesel baseline. The efficiency improvements were a result of reduced heat transfer and shorter, more thermodynamically efficient, combustion process. For exothermic reforming processes, losses in the reformer outweigh the improvements to engine efficiency, while for endothermic processes the recovery of exhaust energy was able to allow the system efficiency to retain a large portion of the benefits to the engine combustion. Energy flow analysis showed that the reformer temperature and availability of high grade exhaust heat were the main limiting factors preventing higher efficiencies. RCCI combustion was explored experimentally for its potential to expand on the optimization results and achieve low soot and NOx emissions. The results showed that reformed fuel can be used with diesel to enable RCCI combustion and resulted in low NOx and soot emissions while achieving efficiencies similar to conventional diesel combustion. Experiments showed that the ratio H2/(H2+CO) is an important parameter for optimal engine operation. Under part-load conditions, fractions of H2/(H2+CO) higher than 60% led to pressure oscillations inside the cylinder that substantially increased heat transfer and negated any efficiency benefits. The system analysis approach was applied to the experimental results and showed that chemical equilibrium limited operation of the engine to sub-optimal operating conditions. RCCI combustion was able to achieve "diesel like" system level efficiencies without optimization of either the engine operating conditions or the combustion system. Reformed fuel RCCI was able to provide a pathway to meeting current and future emission targets with a reduction or complete elimination of aftertreatment costs. Particle size distribution experiments showed that addition of reformed fuel had a significant impact on the shape of the particle size distribution. Addition of reformed fuel reduced accumulation-mode particle concentration while increasing nucleation-mode particles. When considering the full range of particle sizes there was a significant increase in total particle concentration. However, when considering currently regulated (Dm>23nm) particles, total concentration was comparable. To address limitations identified in the system analysis of the RCCI experiments a solid oxide fuel cell was combined with the engine into a hybrid electrochemical combustion system. The addition of the fuel cell addresses the limitations by providing sufficient high grade heat to fully drive the reforming reactions. From a system level perspective, the impact of the high frequency oscillations observed in the experiments are reduced, as the system efficiency is less dependent on the engine efficiency. From an engine perspective, the high operating pressures and low reactivity of the anode gas allow reduction of the likelihood of such events. A 0-D system level code was developed and used to find representative conditions for experimental engine validation. The results showed that the system can achieve system electrical efficiencies higher than 70% at 1 MWe power level. Experimental validation showed that the engine was able to operate under both RCCI and HCCI combustion modes and resulted in low emissions and stable combustion. The potential of a hybrid electrochemical combustion system was demonstrated for high efficiency power generation
Download or read book Combustion and Pollutant Characteristics of IC Engines Fueled with Hydrogen and Diesel hydrogen Mixtures Using 3D Computations with Detailed Chemical Kinetics written by Hassan A. Khairallah and published by . This book was released on 2015 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In order to develop design guidelines for optimum operations of internal combustion engines fueled with alternative fuels, a comprehensive understanding combustion behavior and the pollutant formation inside the cylinder are needed. The first part of this thesis aimed to numerically study the engine performance and in-cylinder pollutant formation in a spark ignition engine fueled with hydrogen. Advanced simulations were performed using multi- dimensional software AVL FIRE coupled with CHEMKIN. The detailed chemical reactions with 29 steps of hydrogen oxidation with additional nitrogen oxidation reactions were also employed. Formation rates of nitrogen oxides (NO[subscript x]) within the engine were accurately predicted using the extended Zeldovich mechanism with parameters adjusted for a carbon-free fuel. The computational results were first validated against experimental results with different equivalence ratios and then employed to examine a spark-ignition engine fueled with hydrogen under different operating conditions. Strategies that could have significant effects on the engine performance and emissions, such as exhaust gas recirculation (EGR) and ignition timing were also investigated. Furthermore, the maximization of engine power and minimization of NO[subscript x] emissions were considered as conflicting objectives for preliminary optimization. Finally, a skeletal reaction mechanism was developed to include the reaction kinetics of diesel and hydrogen fuel mixtures to investigate in-cylinder combustion processes of such a dual fuel compression-ignition engine. The model was then employed to examine the effects of exhaust gas recirculation (EGR) and N2 dilution on NO[subscript x] emissions"--Abstract, page iv.
