A Computational Study on Performance, Combustion and Emissions Characteristics of a Hydrogen-Fueled Internal Combustion Engine

2009 ◽  
Author(s):  
Shravan K. Vudumu ◽  
Umit O. Koylu
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Computational Study ◽  
Internal Combustion ◽  
Nox Emissions ◽  
Combustion Engines ◽  
Hydrogen Fuel ◽  
Operational Conditions ◽  
Higher Power ◽  
Engine Power

Hydrogen is an alternative fuel that is considered to be one of the viable solutions to the increasing demands of clean and secure energy. Internal combustion engines fueled by hydrogen have the potential for higher power and efficiency with lower emissions when compared to gasoline. In the present study, advanced engine simulations were used to study the performance, combustion and emission characteristics of a hydrogen-fueled engine. Hydrogen fuel-specific combustion models were used to account for the distinctive characteristics of hydrogen combustion when compared to that of gasoline. The simulation results matched well with the already-published experimental data under similar engine operational conditions. NOx emissions were found to increase drastically after an equivalence ratio of 0.5 due to high combustion temperatures. EGR was found to be an effective way to reduce NOx emissions but compromised engine power and efficiency.

scholarly journals Hydrogen Internal Combustion Engine

2021 ◽  
pp. 112-115
Keyword(s):  
Fuel Cell ◽  
Rare Earths ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Short Time

Hydrogen fuel constitutes an attainable alternative strategy, which can be implemented in the long term. This strategy can avoid the risk of commodity supply dependency (rare earths and copper) and can delay the still open decisions on e-mobility. Hydrogen internal combustion engines represent a doable and less expensive solution for using hydrogen than purchasing a new car equipped with a hydrogen fuel cell. Conventional piston engines can be switched to gas operation with relatively little change. This approach is environmentally more viable, as in a short time most vehicles can be switched to emission-free operation. Also, it can avoid the risk of commodity supply dependency (rare earths and copper) and can delay the still open decisions on e-mobility.

scholarly journals Algorithm for using hydrogen fuel in wheeled vehicles

2020 ◽  
Vol 17 (3) ◽  
pp. 168-172
Author(s):  
S. A. Vorobyov ◽  
◽  
P. A. Razumov ◽  
Keyword(s):  
Power Systems ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Economic Effect ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Otto Cycle ◽  
Hydrogen Fuel ◽  
Effective Use ◽  
Wheeled Vehicles

The use of hydrogen as fuel in wheeled vehicles with an internal combustion engine is considered, and an algorithm for its effective use is developed. This algorithm will minimize the time and cost of re-equipping the power system to obtain an environmental and economic effect on vehicles equipped with gasoline or gas internal combustion engines operating on the Otto cycle with various power systems.

CHARACTERIZATION OF PERODUA MYVI K3-VE I4 ENGINE PERFORMANCE USING EXHAUST GAS RECIRCULATION (EGR)

2015 ◽  
Vol 75 (8) ◽  
Author(s):  
M. Hanif Mat Muhammad ◽  
A. Qaiyum Hanafiah ◽  
Aman Mohd Ihsan Mamat
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Nox Reduction ◽  
Engine Performance ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Emission Regulations ◽  
Current Emission ◽  
Gas Recirculation ◽  
Engine Power

Internal combustion engines are the main power source for  automobile vehicles.  As current  emission regulations becomes more stringent, more fuel efficient and less polluting engines are becoming the focus of car manufacturers. This paper presents the study of improving the performance of K3-VE I4 internal combustion engine that is used in the Perodua Myvi for the Perodua Eco-Challenge 2013. The strategy was  to use an EGR system to reduce Brake Specific Fuel Consumption (BSFC) while maintaining or increasing the engine power. The effects of different location of EGR on the engine performance were tested on a chassis dynamometer. The sensitivity of the engine performance and gas emission were studied since EGR implementation plays a  major role in influencing NOx emission. The performance parameter such as engine power and BSFC were then analysed. The result shows that a significant increase of power can be achieved and a reduction of around 56% was obtained on the BSFC. While the best NOx reduction was around 93%. These improvements are obtained at low RPM that corresponds to Perodua Eco-Challenge’s objective.  

scholarly journals Introduction of HCCI for Hydrogen Fuel Engines

2020 ◽  
pp. 127-132
Author(s):  
Chuanhao Zhao ◽  
Yang Luo
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Homogeneous Charge Compression Ignition ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Compression Ignition ◽  
Hydrogen Fuel ◽  
Advantages And Disadvantages ◽  
Hcci Combustion

This paper is a brief review of the homogeneous charge compression ignition (HCCI) model for hydrogen-fueled internal combustion engines based on an analysis of the advantages and disadvantages of hydrogen internal combustion engines and HCCI combustion. It found that HCCI can be realized in a hydrogen-fueled internal combustion engine, meanwhile the HCCI can effectively reduce the emission of hydrogen internal combustion engine.

scholarly journals Assessment of thermodynamic cycle of internal combustion engine in terms of rightsizing

2019 ◽  
Vol 178 (3) ◽  
pp. 182-186
Author(s):  
Zbigniew SROKA ◽  
Maciej DWORACZYŃSKI
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Combustion Process ◽  
Thermodynamic Cycle ◽  
Internal Combustion ◽  
Research Problem ◽  
Combustion Engines ◽  
Operating Characteristics ◽  
Swept Volume

The modification of the downsizing trend of internal combustion engines towards rightsizing is a new challenge for constructors. The change in the displacement volume of internal combustion engines accompanying the rightsizing idea may in fact mean a reduction or increase of the defining swept volume change factors and thus may affect the change in the operating characteristics as a result of changes in combustion process parameters - a research problem described in this publication. Incidents of changes in the displacement volume were considered along with the change of the compression space and at the change of the geometric degree of compression. The new form of the mathematical dependence describing the efficiency of the thermodynamic cycle makes it possible to evaluate the opera-tion indicators of the internal combustion engine along with the implementation of the rightsizing idea. The work demonstrated the in-variance of cycle efficiency with different forms of rightsizing.

FEATURES OF MEASURING THE CAMSHAFT OF INTERNAL COMBUSTION ENGINES

2021 ◽  
Vol 4 (30) ◽  
pp. 99-105
Author(s):  
A. V. Summanen ◽  
◽  
S. V. Ugolkov ◽  
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Technical Condition ◽  
Combustion Engines

This article discusses the issues of assessing the technical condition of the camshaft, internal combustion engine. The necessary parameters for assessing the technical condition of the engine camshaft have been determined. How and how to measure and calculate this or that parameter is presented in detail. Methods for calculating the parameters are presented. A scheme and method for measuring neck wear, determining the height of the cam, determining the beating of the central journal of the camshaft are proposed. The main defects of the camshafts are presented. The issues of the influence of these parameters on the operability of the camshaft and the internal combustion engine as a whole are considered.

Possibility of using gas lubricant in the cylinders of internal combustion engines of transport vehicles

2021 ◽  
pp. 13-20
Author(s):  
Keyword(s):  
Internal Combustion Engine ◽  
Bearing Capacity ◽  
Power Plants ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Engine Piston ◽  
Suspension Stiffness ◽  
Gas Layer

The prospects of using the gas-static suspension of the internal combustion engine piston in transport vehicles and power plants are considered. The diagram of the piston and the method for calculating the stiffness and bearing capacity of the gas layer surrounding the piston are presented, as well as the results of experiments that showed the relevance of this method. The possibility of gas and static centering of the engine piston is confirmed. Keywords: internal combustion engine, piston, gasstatic suspension, stiffness, bearing capacity, gas medium. [email protected]

Calculation of Acoustic Efficiency of Exhaust Silencers for Automotive Internal Combustion Engines

2021 ◽  
pp. 41-47
Author(s):  
Vladimir Tupov ◽  
O. Matasova
Keyword(s):  
Acoustic Waves ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Control Point ◽  
Plane Waves ◽  
Exhaust System ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Exhaust Noise ◽  
Insertion Losses

Insertion losses as the main characteristic that mathematically describes the acoustic efficiency of a noise silencer has been considered. This characteristic shows the reduction of noise generated by its source, in particular by the internal combustion engine’s exhaust system, at the control point as a silencer use result. Has been presented a mathematical description of the insertion losses, and have been considered parameters necessary for calculating this characteristic. Has been demonstrated the analytical dependence of impedance for the sound emission by the exhaust system’s end hole from the coefficient of acoustic waves reflection by this hole. The performed analysis of the widely used formulas for calculating the coefficient of sound reflection by the end hole has showed their insufficient accuracy for project designs performing. Have been proposed calculation dependences providing high accuracy for calculations of the reflection coefficient modulus, and the attached length of the channel end hole without a flange in the entire range of the existence of plane waves in it. It has been shown that the end correction of this hole at ka = 0 is 0.6127, and not 0.6133, as it was mistakenly believed until now in world acoustics. Has been proposed a method for calculation the exhaust noise source internal impedance. This method more accurately, in comparison with the already known ones, describes the acoustic processes in the internal combustion engine’s exhaust manifold, thanks to increases the accuracy of calculation the silencer acoustic efficiency, that allows develop the silencer at the early stages of the design of an automotive internal combustion engine.

A Novel Way of Manipulating and Optimizing CAM Profiles for Internal Combustion Engines

2007 ◽  
Author(s):  
Satheesh Makkapati ◽  
Kim Ku ◽  
Steve Poe
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Computationally Efficient ◽  
Trade Offs ◽  
Cam Profile ◽  
Computer Codes ◽  
Tool Optimization ◽  
Automated Tool

Generating an optimum cam profile for an internal combustion engine application is usually a very involved process. This is because of the challenge faced by the engine engineers to perform several trade-offs between fuel economy, performance, durability and emissions. Typically, the trade offs are worked out using several computer codes and with the involvement of a cross-functional team of engineers. Hence, there is a need to develop a tool that can encapsulate the various computer codes and can manipulate the cam profile with ease. With the existence of such an automated tool, optimization of the cam profile can be achieved with a specified trade-off between the several metrics identified above. This paper describes the development of such a tool, and discusses the ingredients that make it flexible and computationally efficient. Results from the use of this tool are documented in this paper as well.

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