Automobile Engineering - Introduction To Automobile Engineering 6s4n3o

Automobile Engineering ME-4015 Introduction of Automobile Dr. Sobahan Mia Professor Department of Mechanical Engineering KUET, Khulna

Automobile Engineering The automobile is a self propelled vehicle that travels on land. It usually has four wheels. An engine provides the power to move the vehicle. The automobile, or Car carries people primarily for their personal transportation.

The automobile is a type of motor vehicle. Two other types of motor vehicles are the truck and the bus.

History of Automobile The first automobile was a gas buggy built by Karl Benz in in 1885 and 1886. It had three wheels, one in the front and two in the rear. Next year another German, Gottlieb Daimler built a four wheel gas buggy.

History of Automobile Two brothers, Charles and Frank Duryea built the first automobile in USA in 1893. Henry Ford built first car in USA in 1896. Ford wanted to make car as cheaply as possible and in 1908 the car Model T Ford in production that put America on wheel. During the next 20 years 15 million Model T Ford were sold.

Automobile Companies

Components of Automobile Automotive vehicles are produced in a large variety of size and shapes. All have the same basic parts and systems.  Engine or power plant – produces power to move the vehicle  Power train – carry the power from the engine to the drive wheel  Suspension system – absorbs the shock of the tires and wheels meeting bumps and holes in the road.  Steering system – the driver can control the direction  Braking system – Driver can slow or stop the vehicle  Electrical system – provide electricity for cranking the engine, charging the battery and powering the lights and other electrical equipment  Body – provides enclosures or compartments for the engine, engers and luggage or cargo.

Automobile Classification Classification of Automobiles: Automobiles can be classified into several types based on many criteria. A brief classification of automobiles is listed below: 1. Based on Purpose : enger vehicles: These vehicles carry engers. e.g: Buses, Cars, enger trains. Goods vehicles: These vehicles carry goods from one place to another place. e.g: Goods lorry, Goods carrier. Special Purpose: These vehicles include Ambulance, Fire engines, Army Vehicles. 2. Based on Load Capacity: Light duty vehicle: Small motor vehicles. eg: Car, jeep, Scooter, motor cycle Heavy duty vehicle: large and bulky motor vehicles. e.g: Bus, Truck, Tractor

Automobile Classification 3. Based on fuel used: Petrol engine vehicles : Automobiles powered by petrol engine. e.g: scooters, cars, motorcycles. Diesel engine vehicles : Automobiles powered by diesel engine. e.g: Trucks, Buses, Tractors. Gas vehicles : Vehicles that use gas turbine as power source. e.g: Turbine powered cars. Electric vehicles : Automobiles that use electricity as a power source. e.g: Electric cars, electric buses. Steam Engine vehicles : Automobiles powered by steam engine. e.g: Steamboat, steam locomotive, steam wagon. 4. Based on Drive of the vehicles: Left Hand drive : Steering wheel fitted on left hand side. Right Hand drive : Steering wheel fitted on right hand side. Fluid drive : Vehicles employing torque converter, fluid fly wheel or hydramatic transmission.

Automobile Classification 5. Based on number of wheels and axles: Two wheeler : motor cycles, scooters Three wheeler : Tempo, auto-rickshaws Four wheeler : car, Jeep, Bus, truck Six wheeler : Buses and trucks have six tires out of which four are carried on the rear wheels for additional reaction. Six axle wheeler : Dodge(10 tire) vehicle 6. Based on type of transmission: Automatic transmission vehicles: Automobiles that are capable of changing gear ratios automatically as they move. e.g: Automatic Transmission Cars. Manual transmission vehicles: Automobiles whose gear ratios have to be changed manually. Semi-automatic transmission vehicles: Vehicles that facilitate manual gear changing with clutch pedal. 7. Based on Suspension system used: Convectional – Leaf Spring Independent – Coil spring, Torsion bar, Pneumatic.

Components of Automobile

Components of Automobile

Components of Automobile

Identifying The Drive Wheel The way the engine mounts usually tells which wheels are the drive wheels. These are the wheel that move the car. If the engine mounts longitudinally, the car usually has Rear Wheel Drive (RWD). Engine power flows through the transmission and driveshaft to rear wheels. Some rear-wheel-drive vehicles may also drive the front wheels. These vehicles usually have a transfer case. It can send or transfer some of the engine power to the front wheels. This is called Four Wheel Drive (4WD) or all wheel drive (AWD). If the engine mounts transversely at the front of the vehicle, the vehicle has Front Wheel Drive (FWD). Engine power flows through the transaxle too the front wheel.

Wheel Drive

Wheel Drive

ing Engine Operation 1. 2. 3. 4.

The Fuel System The Ignition System The Lubrication System The Cooling System

Getting Power to the Wheels 1. 2. 3. 4.

The Power Train The Clutch Transmissions and Transaxles Automatic Transmissions and Transaxles

Automotive Repair The six steps in an automotive repair job 1. 2. 3. 4. 5. 6.

Measuring Disassembling Machining Installing new, rebuilt, r serviced parts Reassembling Adjusting

Modern Automobile

Modern Automobile

Hybrid Car

Automotive Engine System Engine fuel and Exhaust System (EFI System, Supercharger, Turbochargers, Carburetor, Diesel fuel injection system)  Engine Lubrication System  Engine Cooling System 