Many people understand that the first genuinely affordable car was the Ford Model T. In 1908, the original Model T built a 2.9-liter four-cylinder engine and had only 22 horsepower.
Throughout the years, automobile engines have improved, but there remain two primary gasoline-powered combustion engine designs: the 2- stroke and 4 stroke engines. Do you understand the difference between the two?
4-Stroke Engine
One of the first modifications to internal combustion engines in the late 1800s was four-stroke engines. There are four stages on a 150cc 4 stroke engine when the pump burns petrol: intake, compression, power, and exhaust. All these phases happen when the piston rises and falls twice. What happens during these stages?
Intake. The piston stroke begins in the top dead center (T.D.C.) and finishes in the bottom dead center (B.D.C.). Such contraction is also referred to as injection or suction. The piston stroke begins in the top dead center (T.D.C.) and finishes in the bottom dead center (B.D.C.). In this phase, the inlet valve should be released when the piston extracts an air-fuel combination through its downwards push, creating vacuum pressure in the cylinders. The piston descends as the air is pulled in by the downward movement contradict with the piston.
Compression. This stroke starts in the B.D.C stage and finishes in T.D.C. In this phase, the air-fuel mixture is compressed by the piston in preparation for combustion throughout power stroke. The valve for intake and exhaust are both closed during this phase.
Combustion. Often referred to as ignition or power. This is the advent of the second four-stroke movement. At this phase, the crankshaft completed a full revolution of 360 degrees. The compressed air-fuel combination is triggered during the piston in T.D.C. (end of compression stroke) when the spark plug moves the piston violently to B.D.C. This stroke creates a mechanism from the engine to flip the crankshaft.
Exhaust. This is also defined as an outlet. Once more, the piston moves from B.D.C. to T.D.C. when the exhaust valve is activated during the exhaust stroke. Such a process removes the mixture of waste air and fuel through the exhaust valve.
2-Stroke Engine
A 2-stroke engine completes the whole combustion process with a single stroke: a compression phase, accompanied by the compressed fuel explosion. The exhaust is released throughout the return stroke, and a new fuel combination reaches the tank. The spark fires once every revolution, and once every two strokes, the piston is powered. The oil must also be pre-mixed with the gasoline in two-stroke engines.
The distinction between the 2-stroke engine and the 4-stroke engine is how fast the process takes place. Depending on the number of periods, the piston goes up and down throughout each cycle.
Advantages of 4-Stroke Engine Over 2-Stroke Engine
- The torque in the 4-stroke petrol or diesel engine is lower than that in the 2-stroke engine.
- 150cc 4 stroke engine is more fuel-efficient compared to a 2-stroke engine.
- This produces less waste because no oil is combusted.
- This engine is more prolonged than 2-stroke engines since 2-stroke motors are designed for high rpm and are therefore less reliable when used on high rpm motors.
- There is a separate petroleum chamber.
As you have seen, since the start of automobiles, automotive engines have always been in constant development. Today, with continual improvements in engine technology and design, it is more powerful, smoother, more reliable, less polluting, and much more fuel-efficient than ever before.
