Introduction to Automotive Performance

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Introduction
Introduction to Vehicle performance Preview
Categorization of Performance

Basic Physics of Acceleration
Concept of Power
Drive System
IC Engine Fundamentals
Mechanism of Acceleration
Two Factors which Limit Acceleration
Tractive Force Relations
Limit of Adhesion
Relation between Torque and Tractive force
Factors affecting Traction Limit
Torque and Power Generation - Definitions
Power Relations
Brake Power of Engine
Engine Characteristics
Spark Ignition vs Compression Ignition
Mean Effective Pressure
Need for a Transmission
Gear Ratio
Gear Addition Based on Traction limit curve
Marriage of Engine and Transmission
Types of Transmissions
Improving Acceleration performance
Forced Induction of Air in Engines
Air Fuel Ratio
Fuel Injection - Throttle Response
How to Increase Power of Engine - Summary
Top speed Performance
Tyre Limit and Aerodynamic Limits
Power to Weight Ratio
Peak Low rpm Torque vs High power
Weight Transfer affects
Affect of Type of Drive on Acceleration performance

Introduction to Handling Preview
Prime Factors which Affect Handling
Typical Suspension Setup
Tire Construction and Properties
Tire Section and Width
Forces Generated on Tire
Tire Lateral Slip angle
Understeer and Oversteer
Road Holding and Grip
Stiff vs Soft Suspension
Centre of Gravity and Weight distribution
Wheel Alignment angles and their Implications
Steady State Handling Test
Double Lane Change test
Tuning for Handling
Steering Feel and Feedback
Steering On centre Performance
Improving Handling Performance- Summary
Steering Ratio
Turning Circle Diameter
Steering Returnability Performance

Basic Physics of Braking
Working Principle of Braking system
Brake Force Generation Preview
Relation between Braking Torque and Friction Force
Kinetic Energy and Braking Power
Work done By Braking system
Stopping distance Calculations
Slip Ratio and Performance
Ill Effects of Wheel Lock-up
Regulating braking force and ABS working principle
Anti Lock Braking system Working Block diagram
Weight Transfer during Braking
Relation of Braking and Handling Behavior
Total Braking Distance

Introduction to Vibrations in Vehicles
What is Ride ?
Excitation Sources for Ride
Excitation sources for NVH
Sources and Paths of Vibration and Noise
Types of Noise
What Constitutes NVH performance?
Natural Frequency
Resonance
Damping, Types
Vibration Transmissability
Modes and Modal Alignment
Spring and Damper
Sensitive Touch points for NVH
Noise absorption Materials
Frequency Response test
Evaluating NVH Performance

Aspects of Durability Preview
Mechanical properties of Materials
Temperature Resistance
Chemical resistance
Stiffness - Concept
Sections and Moment of Inertia
Bending Stiffness of Vehicle
Torsional Stiffness of Vehicle
Trade-off Stiffness vs Weight
Types of Loading on Vehicle
Wear and Tear of components
Considerations for Durability in Vehicle development

Flow of Energy in an IC engine vehicle
Energy Losses in IC engine
Types of Vehicle level Resistances
Contributions toward Losses
Specific Fuel Consumption
Drag Force
Thermal Efficiency and Factors affecting it
Tire Rolling resistance
Driving pattern and Environmental condition affects
Ways of Improving Fuel economy