Automobile(varinder)

Presentation on Automobiles By. Virendra Kumar. B.Tech(E.E.E) 7080710275

Contents. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summary About Automobiles • Cylinders expand hot gas to do work • Uses the flow of heat from hot burned gases to cold atmosphere to produce work • Energy efficiency is limited by thermodyn. • Higher temperatures increase efficiency

The first mast produce car. ,[object Object],[object Object],[object Object],[object Object]

Why are cars important today? ,[object Object],[object Object]

Old and New Ford vehicles ,[object Object],[object Object]

Old and New Chevy's ,[object Object],[object Object]

Old and New Dodges ,[object Object],[object Object]

New and Old Pontiacs ,[object Object],[object Object]

EFFICIENCY ,[object Object],• As the temperature difference between hot and cold increases. – Heat’s change in entropy increases. – A heat pump becomes less efficient. – A heat engine becomes more efficient.

TRANSMISSION • Changes force/distance (actually torque/rotation rate) relationships between the engine and the wheels • Two basic types – Manual: clutch and gears – Automatic: fluid coupling and gears

Manual Transmission • Clutch uses friction to convey torque from engine to drive shaft Opening clutch decouples engine and shaft Closing clutch allows engine to twist shaft • Gears control mechanical advantage

Automatic Transmission ,[object Object],[object Object],[object Object],[object Object]

HEAT PUMPS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

HEAT ENGINE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Engine, Step 1 ,[object Object],[object Object],[object Object],Engine, Step 1

Engine, Step 2 • Fuel/air mixture after compression stroke • Pressure = High • Temperature = Hot

ENGINE STEP 3 ,[object Object],[object Object],[object Object]

Diesel Engine • Uses compression heating to ignite fuel – Squeezes pure air to high pressure/temperature – Injects fuel into air between compression and power strokes – Fuel burns upon entry into superheated air • Power stroke extracts work from burned gase

Internal Combustion Engine ,[object Object],[object Object],[object Object],[object Object]

Four Stroke Engine ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Induction Stroke ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Compression Stroke ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Power Stroke ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Thank you for having your attention

Automobile(varinder)

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