INTERNAL COMBUSTION ENGINESVSELECTRIC MOTORS

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.

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.

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.

 A steam engine's cylinder and piston

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.

INTERNAL COMBUSTION ENGINE

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

AN ELECTRIC MOTOR

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.

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

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

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.

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