Computational Fluid Dynamics (CFD) Analysis of 3D Car Model to Understanding Key Aerodynamic Issues and Their Interaction with Other Motorsport & Automotive Vehicle System

Growing population of vehicles is one the biggest global concern and it led to traffic problems and creates congestion. People are not getting place to park their vehicles. Travel by car for shorter distance also stressful and time consuming because they have to face road traffic and usually cars are big at size so, to travel by car on road need more spacious and traffic free roads. that’s why some manufacturers start designing & manufacturing One seater vehicle which can easily transportable and create less congestion. If a single person wants to ride somewhere then he doesn’t have to take large car for one person, He can use single seater vehicle. In this assignment I have Designed and Tested a single seater electric vehicle which can easily transportable, compact and personal commuter vehicle (PMV). Keywords: CFD analysis, Aerodynamics analysis, automotive vehicle system, 3D modelling, pressure plot, performance optimization, vehicle aerodynamics.

Comparative evaluation of dynamics and fuel efficiency indicators of the car with robotic stepped transmission under condition of different diameters of engine cylinders

Problem. Repair dimensions method regulates increment of cylinders by the means of mechanical treatment, which leads to increasing of working volume of the engine. This will cause a change of dynamics and fuel-efficiensy indicators of the car with the certain type of transmission. Goal. The goal is to comparatively evaluate dynamism and fuel-efficiency of automotive vehicle category N2 with two options of engines, which have nominal and repair cylinder sizes. The riding cycle of the cars with robotic stepped gearbox was researched, that is without breaking of force stream while switching gears. Methology. Imitative simulation of cars riding cycle, according to standard, was conducted with the help of Matlab Simulink software. Because of the fact that mathematical model of cars movement during mentioned cycle is based on elementary dependencies, for its realization the only basics avialable blocks of the sofware package were used. The flowchart is given in the paper. Results. Simulation of riding cycle of N2 – category automotive vehicle with robotic gearbox was conducted at full engine’s capacity while running-up. Obtained results have shown that engines with repairment sizes have advantage in dynamism indicators, engines with nominal cylinder sizes have advantages in fuel-efficiency. Originality. For obtaining of comparative evaluation of dynamics and fuel-efficiency indicators of the car with robotic gearbox with different engines, the imitation simulation of riding cycle, according to standarts, was used with the help of Matlab Simulink software. Practical value. Application of the repairment sizes method upon the engine’s cylinder liners has shown improvement of dynamics indicators of car with robotic transmission, which will improve its productivity under excessive engines work conditions.

Technique for ensuring safety of transportation vehicles through the analysis of their structural reliability

The article is devoted to the development of a technique for the assessment of the influence of the structural reliability of transportation vehicles on their safety. This technique includes: an analysis of the automotive vehicle as a complex technical system, its structural elements greatly influencing road safety (RS); calculation of mean-time-between-failures and time for recovery of subsystems, assemblies and parts, probability of failure-free operation. As a result of the technique application, recommendations as to intervals of the replacement of automotive vehicle’s elements depending on the required probability of failure-free operation are released.