internal combustion engines vs electric motors

1. INTERNAL COMBUSTION
ENGINES
VS
ELECTRIC MOTORS

2. ENGINES
 An engine or motor is a machine designed to convert one form
of energy into mechanical energy.
 Heat engines- including internal combustion engines and external
combustion engines (such as steam engines), burn a fuel to create heat,
which then creates a force.
 Electric motors - convert electrical energy
into mechanical motion; pneumatic motors use compressed air and
others—such as clockwork motors in wind-up toys—use elastic energy.

3. HEAT ENGINES
 Since engines work by burning fuels to release heat, they're called heat
engines.
 The process of burning fuel involves a chemical reaction
called combustion where the fuel burns in oxygen in the air to make
carbon dioxide and steam.
 Generally, engines make air pollution as well because the fuel isn't always
100 percent pure and doesn't burn perfectly cleanly.

4. TYPES OF HEAT ENGINES
External combustion engine
 The fuel burns outside and away from the main bit of the engine where the
force and motion are produced. A steam engine is a good example: there's
a coal fire at one end that heats water to make steam. The steam is piped
into a strong metal cylinder where it moves a tight-fitting plunger called
a piston back and forth. The moving piston powers whatever the engine is
attached to (maybe a factory machine or the wheels of a locomotive). This
is an external combustion engine because the coal is burning outside and
some distance from the cylinder and piston.

5. A steam engine's cylinder and piston

6. TYPES OF HEAT ENGINES
 internal combustion engine the fuel burns inside the cylinder. In a
typical car engine, for example, there are something like four to six
separate cylinders inside which gasoline is constantly burning with oxygen
to release heat energy. The cylinders "fire" alternately to ensure the engine
produces a steady supply of power that drives the car's wheels.
 Internal combustion engines are generally far more efficient than external
combustion engines because no energy is wasted transmitting heat from a
fire and boiler to the cylinder; everything happens in one place.

7. INTERNAL COMBUSTION ENGINE

8. ELECTRIC MOTORS
 Electric motor is an electrical machine that converts electrical
energy into mechanical energy. The reverse of this would be the conversion
of mechanical energy into electrical energy and is done by an electric
generator.
 Electric motors involve rotating coils of wire which are driven by the
magnetic force exerted by a magnetic field on an electric current. They
transform electrical energy into mechanical energy
 Examples of electric motors include fans, washing machines,electric
scooters ,fridges, pool pumps, vacuum cleaners and fan ovens

9. AN ELECTRIC MOTOR

10. INTERNAL COMBUSTION MOTORS
 Causes environmental pollution. Responsible for 20% of green house gas
emissions
 Uses fossils fuels which are limited and cant be renewed.
 Gas required is 7.50 between ages of 20-34 yrs old drives 20000 km a year.
 If a vehicle is holding 50 liters and in I liter =12.7 km is covered then total is
635 km.
 With 20000 km annually a person has to fill up to 35 times
 A person will spend more than 6000 on gasoline car every year.

11. ELECTRIC MOTORS
 Causes 15% of environmental pollution due to disposal of lithium ion
batteries.
 Uses electrical energy which can be made in large amounts or can be
renewed. Relies on power grid of energy source 54% American power
generated by coal.
 Electricity is 0.5204 per kwh between ages of 20-34 yrs old drives 20000km
a year.
 1 kwh cost 2.8,40kwh you can drive 256 km ,it will cost 112.every 3 days
you need to charge ,224 a week
 52*224=11648

12. INTERNAL COMBUSTION ENGINES (ICe)
VS
ELECTRIC MOTORS (EM)
ICe
 Requires more maintenance
 Produces noise
 Fast refueling
 The range of conventional gasoline
vehicles today is around 400 miles.
 Causes pollution in large scale.
 The supply of petrol is decreasing and we
will one day run out of it.
 Because of high demand and decreasing
supply ,the price of petrol is increasing
EM
 Requires less maintenance
 Doesn't produce noise.
 Slow refueling
 The range ,the distance an electric car
can travel on a single charge or fill up—
varies from about 60 to more than 200
miles.
 Causes less pollution.
 Electricity is a renewable resource.
 These are cheaper to fill up once again

13. CONCLUSION
In the long run conventional fossil fuels will get depleted.. It will
be our need to switch over electric engines. That’s why it is
necessary to move towards the technology of electric motors and
try to make it more efficient rather than using conventional
internal combustion engines.