Diesel Engine Analytical Model (original) (raw)

Investigation of Diesel Engine Performance Based on Simulation

American Journal of Applied Sciences 5 (6), 2008

The single cylinder modeling and simulation for four-stroke direct-injection diesel engine requires the use of advanced analysis and development tools to carry out of performance the diesel engine model. The simulation and computational development of modeling for the research use the commercial of GT-SUITE 6.2 software. In this research, the one dimensional modeling of single cylinder for four-stroke direct-injection diesel engine developed. The analysis of the model is combustion performance process in the engine cylinder. The model simulation covers the full engine cycle consisting of intake, compression, power and exhaust. In this model it can to know the diesel engine performance effect with simulation and modeling in any speeds (rpm) parameters. The performance trend of the diesel engine model developed result of this model based on the theoretical and computational model shows in graphics in the paper.

Modelling Diesel Combustion Mechanical Engineering Series

2013

The Internal Combustion (IC) engines play a dominant role in the fields of transportation of goods and passengers, agricultural and industry. They develop power by consuming precious fossil fuels and cause pollution. Among different types of engines, the direct-injection (DI) diesel engine exhibits the best fuel economy along with lowest engine-out emissions. Efforts have been put to improve exhaust emissions and fuel economy continuously. The complex task of improving IC engines, which have reached a higher degree of sophistication, can be achieved by combination of advanced experiments and computational studies. Modern methods of experimental investigations are being developed to provide more insight. The modelling of combustion engine processes is useful to carry out extensive parametric studies, rather than hardware development and experimentation. Depending on the various possible applications, different types of models for engine combustion processes have been developed. There...

Experimental Investigation of Diesel Engine Characteristics under Various Loads

2023

Internal combustion engines (ICEs) are widely used in the road, sea, air and railway vehicles and stationary such as generators, pumps elevators or agricultural and construction machinery. The features expected from the ICEs differ according to the usage areas. For example; a vehicle engine should operate at a certain lower and upper engine speeds according to the engine load in constant gas condition and the features of the engine should be known in this range. On the other hand, a power plant engine must work at a constant speed under various loads for the electricity produced to be at a desired frequency. Diesel engines are widely used as stationary engines due to the higher fuel economy, especially in places where high power is required. Therefore, it is important to be known of the characteristics of the stationary engine under various operating conditions. In the presented study, it is aimed to determine experimentally the characteristics of a diesel engine under variable loads and at constant speed. In the experimental study, the characteristics of the engine such as air excess coefficient, torque, brake power, various efficiencies and fuel consumption were determined under variable loads by using a single-cylinder, four-stroke and water-cooled direct injection experimental diesel engine. Experimental results show that the variation of engine load affected considerably the investigated engine characteristics.

A Semi-Empirical Model to Predict Diesel Engine Combustion Parameters

To carry out the investigation, a cylinder pressure model was developed based on the position of the crankshaft, engine load, engine speed, and fuel injection time. This model takes into account the maximum number of parameters involved. The accuracy of the model was verified by experimental results. The average error of the cylinder pressure, the average radical of the square of the error of the cylinder pressure, and the average error of maximum pressure were calculated at 1.85%, 3.32, and 0.66% (of maximum pressure), respectively. This model was compared with the model by Conolly and Yagle; the two models are similar in terms of the pressure relating the square of time and the exponential of time. This model appears applicable to other diesel engines. The results of the equation and experimental results were compared and described by a Fourier series, which is indicative of the cylinder pressure level between them.

Performance Modeling of Single Cylinder Diesel Engine for

This investigation is an effort to find best optimization method for diesel engine using blended fuel. Present time, the scarcity of fossil fuel is a serious problem all over the world. So, researchers are trying to find best alternative fuel for that conventional fuel. When we use alternate fuel in diesel engine, we must have to optimize the parameter of diesel engine. The present trend will be used low emission fuels or technique which creates low emission & gives high thermal efficiency in vehicles. The purpose of this study is to experimentally analyze the performance and the pollutant emissions of a four-stroke CI engine operating on blends with the aid of artificial neural network (ANN).If parameter optimize for blended fuel, this is adventurous for decided fuel consumption. In this paper we critically examined various optimization techniques like, full factorial method response surface method, Taguchi method ,Artificial neural network.

Thermodynamic diesel engine cycle modeling and prediction of engine performance parameters

The aim of the present study is to develop a computer code for determining complete cycle, performance parameters and exhaust emissions of diesel engines. For this purpose, a computer program has been used and improved with new assumptions. To compute diesel engine cycle, zero-dimensional intake and exhaust model given by Durgun, zero-dimensional compression, combustion and expansion model given by Ferguson have been used and improved with new assumptions. Using the developed computer program, complete engine cycle, performance parameters and exhaust emissions can be determined easily. The values of the cylinder pressure and engine performance parameters predicted by the presented model matched closely with the other theoretical models and experimental data. Also, this program can be adapted and used practically for various parametric, alternative fuel and water addition studies in diesel engines.

SIMULATION ON FOUR-STROKE DIESEL ENGINE AND EFFECT OF ENGINE PERFORMANCE

The simulation and computational development of modelling for the research is use the commercial Computational Fluid Dynamics (CFD) of GT-SUITE 7.0 software. In this research, the one dimensional (1D) CFD modelling of four-stroke direct injection diesel engine is developed. The analysis of the model is fluid flow and combustion performance process in the engine cylinder. The model simulation covers the full engine cycle consisting of intake, compression, power and exhaust. In this model it can to know the diesel engine performance effect with simulation and modelling in any speed (rpm) parameters before to do the physically development, so it can do the new engine design components with the economic material and time. The result of this model based on the theoretical and computational model is to know the trend of the diesel engine model developed.

Design and development of a diesel engine computer simulation program

2015

ABSTRACT: This paper concerns the development of a diesel engine mathematical model and a suite of computer simulation programs which would allow the effects of various design and operational changes to be reliably and accurately predicted with the ultimate aim of producing cleaner engines and/or more efficient power units. The model has been tested against the experimental results of the Paxman engine at Newcastle University and earlier against the Atlas engine at Ricardo, Brighton, UK. The predicted results and the experimental data are in good agreement. 1

Detailed analytical model of a single-cylinder diesel engine in the crank angle domain

Proceedings of The Institution of Mechanical Engineers Part D-journal of Automobile Engineering, 2001

A detailed analytical non-linear dynamic model for single-cylinder diesel engines is developed. The model describes the dynamic behaviour between fuelling and engine speed and includes models of the non-linear engine and dynamometer dynamics, the instantaneous friction terms and the engine thermodynamics. The model operates in the crank angle domain. The dynamometer model enables the study of the engine behaviour under loading. The instantaneous friction model takes into consideration the viscosity variations with temperature. Inertia variations with piston pin offset are presented. In-cycle calculations are performed at each crank angle, and the correct crank angles of ignition, speed variations, fuel supply and air as well as fuel burning rate are predicted. The model treats the cylinder strokes and the manifolds as thermodynamic control volumes by using the filling and emptying method. The model is validated using experimentally measured cylinder pressure and engine instantaneous speeds, under transient operating conditions, and gives good agreement. The model can be used as an engine simulator to aid diesel engines control system design and fault diagnostics.