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 Thermodynamic modeling of combustion process of the internal combustion engines – an overview

2019 ◽  
Vol 178 (3) ◽  
pp. 27-37 ◽  
Author(s):  
Denys STEPANENKO ◽  
Zbigniew KNEBA
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Combustion Process ◽  
Engine Performance ◽  
Internal Combustion ◽  
Air Pollutant ◽  
Combustion Engines ◽  
Engine Simulation ◽  
Toxic Emissions ◽  
The Moment

The mathematical description of combustion process in the internal combustion engines is a very difficult task, due to the variety of phenomena that occurring in the engine from the moment when the fuel-air mixture ignites up to the moment when intake and exhaust valves beginning open. Modeling of the combustion process plays an important role in the engine simulation, which allows to predict in-cylinder pressure during the combustion, engine performance and environmental impact with high accuracy. The toxic emissions, which appears as a result of fuels combustion, are one of the main environmental problem and as a result the air pollutant regulations are increasingly stringent, what makes the investigation of the combustion process to be a relevant task.

Different Approaches for Determination of Internal Combustion Engines Performances

2016 ◽  
Vol 822 ◽  
pp. 169-174
Author(s):  
Alexandru Mihai Dima ◽  
Dragos Tutunea ◽  
Marin Bica
Keyword(s):  
Automotive Industry ◽  
World Economy ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Engine Performance ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Continue Development ◽  
The World

The automotive industry represents one of the most important segments of the world economy that has to be in a continue development. The latest procedures for determination of an internal combustion engine performance have a big acquisition cost and demand special conditions even if the tested engine has smaller dimensions. The present paper presents other accessible solutions for this matter.

An Investigation of the Airbox Method of Measuring the Air Consumption of Internal Combustion Engines

1947 ◽  
Vol 157 (1) ◽  
pp. 387-404 ◽  
Author(s):  
L. J. Kastner
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Pressure Fluctuations ◽  
Engine Performance ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Constant Flow ◽  
Additional Information ◽  
Convenient Means ◽  
Development Engineer

The mass of air taken in per unit time by an internal combustion engine is a quantity of considerable importance in any analysis of engine performance, and a convenient means of measuring this quantity will often be required by the research worker or development engineer. Where reciprocating engines are concerned, the problem of measurement is not easy, since the flow is of a pulsating nature, for which “constant flow” types of measuring apparatus will, in general, be unreliable. A few suitable methods for measuring pulsating flows have, however, been devised, and what is generally known as the “airbox method”—consisting of the use of a measuring orifice in conjunction with a smoothing capacity—has often been employed, mainly because of its simplicity and the ease with which the necessary apparatus can be constructed. The work of Watson and Schofield (Proc. I.Mech.E., 1912, p. 517) has been of great value to users of the airbox method, but, though it has to some extent been supplemented by later investigations, several important questions still remain unanswered. The experiments described in the present paper represent an attempt to furnish additional information, in particular as regards the amplitude of the pressure fluctuations occurring in boxes of inadequate size and the errors in measurement produced thereby, a simple theory being given to account for these latter. The various factors governing the design of a reliable airbox meter are discussed, and it is shown that they can be related to the value of a dimensionless criterion which may be determined for any given engine.

scholarly journals Conception of gear ratios selection between the engine and the electric machine in the hybrid drive systems

2015 ◽  
Vol 160 (1) ◽  
pp. 56-61
Author(s):  
Kazimierz ROMANISZYN
Keyword(s):  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Engine Performance ◽  
Internal Combustion ◽  
Electric Machine ◽  
Exhaust Gas ◽  
Combustion Engines ◽  
Hybrid Drive ◽  
Drive Systems ◽  
Fuel Consumption And Emissions

Modern vehicles with hybrid combustion-electric drive systems are an important element in the strategy for reducing fuel consumption and emissions of exhaust gas components. Determinant of the use and development is to achieve substantial benefits in terms of classical powertrain vehicles equipped with internal combustion engines. This paper presents the concept of kinematic ratio selection between the engine and the electric machine. This concept is based on the analysis of the internal combustion engine load caused by the resistances of motion and the best possible assessment of the additional load caused by the operation of the generator. It is proposed that the energy transferred to the generator was taken in a most preferred area of the engine performance characteristics and generator by changing kinematic ratio between the engine and the generator. The described concept can also be used for the recovery of vehicles braking energy.

Internal-Combustion Engine Performance in the Fireground

1994 ◽  
Vol 4 (2) ◽  
pp. 83 ◽  
Author(s):  
E Carter ◽  
B Milton
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Engine Performance ◽  
Internal Combustion ◽  
Combustion Engines ◽  
Power Losses ◽  
Ambient Conditions ◽  
In Fire ◽  
Ci Engines

The performance of internal combustion engines used in fire fighting equipment can be affected by the fireground ambient conditions. Both gasoline (SI) and diesel (CI) engines can suffer significant power losses due to high temperatures and reduced oxygen in the intake air caused by mixing with the products of combustion of a fire. This, and other engine problems associated with starting and operation under fireground conditions are examined in this paper.

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.

Computationally Efficient Simulation of Multi-Component Fuel Combustion Using a Sparse Analytical Jacobian Chemistry Solver and High-Dimensional Clustering

2013 ◽  
Author(s):  
Federico Perini ◽  
Anand Krishnasamy ◽  
Youngchul Ra ◽  
Rolf D. Reitz
Keyword(s):  
Reaction Mechanism ◽  
Chemical Kinetics ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Engine Performance ◽  
Internal Combustion ◽  
Point Of View ◽  
High Dimensional ◽  
Computational Point ◽  
Fuel Surrogates

The need for more efficient and environmentally sustainable internal combustion engines is driving research towards the need to consider more realistic models for both fuel physics and chemistry. As far as compression ignition engines are concerned, phenomenological or lumped fuel models are unreliable to capture spray and combustion strategies outside of their validation domains — typically, high-pressure injection and high-temperature combustion. Furthermore, the development of variable-reactivity combustion strategies also creates the need to model comprehensively different hydrocarbon families even in single fuel surrogates. From the computational point of view, challenges to achieving practical simulation times arise from the dimensions of the reaction mechanism, that can be of hundreds species even if hydrocarbon families are lumped into representative compounds, and thus modeled with non-elementary, skeletal reaction pathways. In this case, it is also impossible to pursue further mechanism reductions to lower dimensions. CPU times for integrating chemical kinetics in internal combustion engine simulations ultimately scale with the number of cells in the grid, and with the cube number of species in the reaction mechanism. In the present work, two approaches to reduce the demands of engine simulations with detailed chemistry are presented. The first one addresses the demands due to the solution of the chemistry ODE system, and features the adoption of SpeedCHEM, a newly developed chemistry package that solves chemical kinetics using sparse analytical Jacobians. The second one aims to reduce the number of chemistry calculations by binning the CFD cells of the engine grid into a subset of clusters, where chemistry is solved and then mapped back to the original domain. In particular, a high-dimensional representation of the chemical state space is adopted for keeping track of the different fuel components, and a newly developed bounding-box-constrained k-means algorithm is used to subdivide the cells into reactively homogeneous clusters. The approaches have been tested on a number of simulations featuring multi-component diesel fuel surrogates, and different engine grids. The results show that significant CPU time reductions, of about one order of magnitude, can be achieved without loss of accuracy in both engine performance and emissions predictions, prompting for their applicability to more refined or full-sized engine grids.

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.

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