AUTO CARE: AUTO MOBILE SYSTEMS; ENGINES

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The power house of your car is the Engine, it's able to give the vehicle the needed power to get the vehicle working.
Engine burns fuel and air to produce power or energy.
There are different processes of fuel
combustion. When the fuel is burned
within the engine, it is called an Internal Combustion (IC) engine, and when it is
burned externally and the produced
steam is used for the mechanical movement, it is called an External Combustion (EC) engine.

Internal combustion Engine: this is the engine used by our vehicles (cars,trucks etc) and it has a 2 major engine type which are the spark ignition and compression ignition engine. The spark ignition engine can be differentiated from the compression ignition engine as per the following factors.
(i) The type of fuel used.
(ii) The way the fuel enters in the combustion chamber.
(iii) The way in which fuel is ignited.

Spark Ignition Engine (Petrol or Gas Engine)
In the spark engine, air and fuel enters into the combustion chamber and compressed by the help of the piston, combustible air-fuel mixture is been ignited by the spark plug, The combustible gases burn and expand, which forces the piston downwards for generating power.

Compression Ignition Engine (Diesel Engine) In the compression ignition engine or diesel engine, only fresh air enters the cylinder, which is compressed to a very high pressure and temperature, which could go up to 1000°F (538°C). The diesel is then injected or sprayed into the engine combustion chamber. This spray contains very fine and tiny particles of diesel in an atomised form. The hot air or heat of compression ignites the fuel and generates the power stroke.

In my next post I will share some of the components of an Internal Combustion Engine.

Post by: Oriyomi Oluwadamilare Dolapo
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