Investigation of the effect of an adjustable rear-end wing-type spoiler on aerodynamic braking performance of vehicle: A case of Suzuki Dzire

Abstract

When A Vehicle Travels At High Speed, It May Face A Variety Of Aerodynamic Challenges. These Challenges Can Have A Significant Impact On Vehicle Performance. One Of These Challenges Is Lift, Which Is Related To Unstable Handling And Reduced Braking Performance. Fortunately, By Using Suitable Aerodynamic Devices Like Rear-End Wing- Type Spoilers, These Challenges Can Be Reduced. This Thesis Work Shows An Investigation Of The Effect Of An Adjustable Rear End Wing-Type Spoiler On Aerodynamic Braking Performance Of Vehicle. The Baseline Model Of The Suzuki Dzire Car And The Wing-Type Spoiler (Half Section Naca 0012 Airfoil) Were Designed By Solid works 2023 Software. The Coefficient Of Aerodynamic Forces Of A Baseline Model Car With And Without A Rear-End Wing-Spoiler At Different Angles Of Inclination (0, 10, 20, 30, 40, 50, And 90 Angles) Was Analyzed Using Ansys Fluent 2022Software At Different Speeds (80, 120, And 160 Km/H). The Results Indicated That As The Angle Increased, Both The Drag And Negative Lift Also Increased. The Braking Distance Was Also Calculated, And At Model Seven, The Maximum Reduction Of Braking Distance Was Achieved.It Can Reduce 9.1% Compared To The Model One On The Icy Road. A Prototype Was Built To Demonstrate The Functionality Of The Adjustable Spoiler. The Prototype Has Both Software And Hardware Components. The Software Component Is The Code That Runs On The Microcontroller. The Programming Was Written Using Arduino Ide Software, And The Circuits Were Designed And Performed Using Proteus And Cirkit Designer Software. The Hardware Components (Including An Arduino Uno Board, Solid State Relay, Solenoid, Breadboard, Brake Switch, Infrared Speed Sensor, Lcd, Dc Motor Circuit Wire, And Dc Motor Pwm Speed Controller) Were Assembled To Create The Prototype Of An Adjustable Rear-End Wing Type Spoiler.