Widodo Budi Santoso

Radial basis function and particle swarm optimization to predict range extender engine performance

Range extender engine is one of the potential technologies to develop in future. However, this technology still has performance and emission problem. To solve this problem, a new technology model and optimization method are needed. Therefore, for this purpose, the radial basis function and particle swarm optimization are used in the investigation. In this study, two types of radial basis function (RBF), Cauchy and Gaussian, were used to construct the prediction model of fuel consumption and range extender engine emission. Both RBF types were compared with one another to decide on which one is the best to predict the model. By using data from a two-cylinder 999 cc gasoline engine, generator, battery, electric motor and other vehicle components, a range extender electric vehicle (REEV) model simulation was built. Based on this simulation result, some output data will be taken as training set data to build the prediction model of fuel consumption and emission and some output data will be taken to test this prediction model in MATLAB. Moreover, particle swarm optimization (PSO) was used to calculate some control parameters of range extender engine to optimize fuel consumption and emission based on the best model. The result shows that the radial basis function is successfully used to develop the prediction model of some range extender engine control parameters. The Cauchy type radial basis function has better accuracy than Gaussian type radial basis function. Moreover, based on the model, PSO method is able to calculate control parameters efficiently to optimize evaluation item based on the model.

Performance and driveline analyses of engine capacity in range extender engine hybrid vehicle

In this study, range extender engine designed should be able to meet the power needs of a power generator of hybrid electrical vehicle that has a minimum of 18 kW. Using this baseline model, the following range extenders will be compared between conventional SI piston engine (Baseline, BsL), engine capacity 1998 cm3, and efficiency-oriented SI piston with engine capacity 999 cm3 and 499 cm3 with 86 mm bore and stroke square gasoline engine in the performance, emission prediction of range extender engine, standard of charge by using engine and vehicle simulation software tools. In AVL Boost simulation software, range extender engine simulated from 1000 to 6000 rpm engine loads. The highest peak engine power brake reached up to 38 kW at 4500 rpm. On the other hand the highest torque achieved in 100 Nm at 3500 rpm. After that using AVL cruise simulation software, the model of range extended electric vehicle in series configuration with main components such as internal combustion engine, generator, electric m...

Modeling and static analysis of a connecting rod in range extender engine

This paper discusses design and static analysis of a connecting rod which is one of the essential components of an internal combustion engine. In this study, connecting rod design is used to construct range extender engine. Range extender engine is one of the important components used to improve the shortcomings of electric vehicles which in this study is of 999 cc capacity. Finite element method was used to analyze the stress, deformation and strain on the connecting rod as a result of the pressure that occurs during combustion. The material used in this research is AISI 4340 steel. Design and analysis were done using SolidWorks software and Ansys Workbench. The pressure contained in the combustion chamber was 5.5 MPa, cylinder bore and stroke was 86 mm x 86 mm. The forces acting on the connecting rod due to pressure of combustion was 32157 N. The maximum value of stress, deformation and strain occurred in the connection between the rod connecting rod big end. Von Mises stress maximum is 423.95 MPa. The maximum deformation value of the connecting rod is 0,125 mm. The maximum principal elastic strain value is 0.0012 mm/mm. The maximum shear stress value of connecting rod is 218.38 MPa. Moreover, stress, deformation and strain evaluations of connecting rod were also done and the results obtained are used as valuable reference in the optimization and improvement to the connecting rod design.

Effect of Exhaust Gas Recirculation on Homogeneous Charge Compression Ignition combustion model in Diesel Engine

In this study, the modeling of the effect of exhaust gas recirculation on Homogenous Charge Compression Ignition (HCCI) in Diesel Engine has been investigated. The efficiency and emission reduction of the engine were an important point of view from study charge compression ignition. Furthermore, the greater adoption of the diesel engine has been inhibited by the increasing public awareness on pollution as well as the rising cost associated with the relatively high number of particulate matter (PM) and oxides of nitrogen (NOx) of its emission. The increase of compression-ignition (CI) engine fuel efficiency accompanied by lower emissions has encouraged intensive studies on the improvements of the diesel engine. In this paper, we describe the recent progress achieved in the research of advanced combustion and fuels to improve the fuel efficiency of diesel or CI engines. An Exhaust Gas Recirculation (EGR) system was arranged to be fitted in the engine. The study on the prospect of EGR application in lowering the engine-out NOx emissions in a heavy-duty diesel engine has been conducted by employing a refined 1D fluid-dynamic engine model generated in Boost Software Tools and the control of engine cycle parameters. The conclusion show that the engine with an opening valve of exhaust gas recirculation 0.3 and a compression ratio of 20 generated the highest volumetric efficiency.