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How the Car Engine Works

Published on Nov 18, 2015

A presentation explaining how a car engine works.

PRESENTATION OUTLINE

How the Car Engine Works

by joshuah collins
Photo by brownpau

What Are Cylinders?

  • Converts fuel
  • Uses Four-Step Combustion Process
  • Main component in a car
Photo by Bitterjug

"Four-step combustion process"

  • Intake
  • Compression
  • Combustion 
  • Exhaust

Cylinder arrangements

  • V
  • Line
  • Flat
Photo by tudedude

Valve Train

  • Camshaft
  • Camshaft moves valves
  • Camshaft in different places
Photo by StayRAW

Engine systems

Ignition System

  • Battery to Distributor
  • Distributor to Wires
  • Wires to Sparkplug
Photo by HighTechDad

Cooling system

  • Radiator and Water Pump
  • Pump runs in between cylinders
  • Water returns to radiator to cool it off
  • Engine coolant removes excess heat
Photo by aresauburn™

Air Intake

  • Air is filtered
  • Superchargers and Turbochargers compress air
  • Turbochargers located in exhaust pipe
  • Superchargers located in engine
Photo by xmatt

Starting systems

  • Electric motor and starter solenoid
  • Starter solenoid powers motor
  • Motor spins engine until combustion cycle kicks in
  • Hundreds of amps must run into solenoid
  • Only powerful motors can spin cold engine
Photo by wbaiv

fuel System

  • Carburetor mixes gases and air
  • Fuel-injected engines
  • Port-fuel injected engines port above valves
  • Direct-fuel injected engines directly into cylinder
Photo by striatic

Lubrication system

  • Lubricates engine
  • Crankshaft and Camshaft mainly
  • Most oil sucked with oil pump
  • Oil sent to cylinders and collects in sump
  • Oil filtered and reused
Photo by Carbon Arc

Exhaust system

  • Catalytic converter, tailpipe, and muffler
  • Catalytic converter is a collection of sensors
  • Tailpipe is where the exhaust exits the car
  • Muffler dims the sound of the engine

Emission Control system

  • Catalytic converter and oxygen sensor
  • Oxygen sensor provides oxygen for catalyst
Photo by Hiddenpower

Electrical system

  • Battery and alternator
  • Battery provides energy for electronic devices
  • Alternator generates energy for battery

Gas engines vs. diesel engines

Gas ENgines

  • Gas is ignited by spark
  • Better climbing than Diesel
  • Emits 10X as many particles as Diesel

Diesel Engines

  • Uses crude oil with less fractions than gasoline
  • Faster acceleration than Gas
  • New tech originally on Diesel 

Questions?