- 4/12/2026
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Car Engine
The car engine, also known as the internal combustion engine, is a machine that operates by burning fuel and air inside the cylinders. This combustion pushes the pistons up and down, causing the engine to run and begin generating power to propel the car.
The engine converts the energy produced by combustion from thermal energy into mechanical kinetic energy that drives the internal parts and keeps them in constant motion so that it remains running continuously to supply the other parts with the energy needed to propel the car.
Car engines operate based on four main strokes: intake, compression, power, and exhaust. These strokes move the pistons connected to the crankshaft up and down, which in turn transfers power to the transmission, then to the axles, and finally to the wheels.
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All car engines operate on the same principle but differ from car to car based on the number of cylinders, displacement, RPM, and several other factors. Small cars typically have fuel-efficient engines with either 3 or 4 cylinders, while sports cars are usually larger and generate more power.
Car engines are available starting with 3 cylinders and going up to 4, 5, and 6 cylinders, then to a larger category consisting of 8, 10 and 12 cylinder engines. and there are several supercars equipped with 16 cylinder engines to deliver stunning performance and over 1,500 horsepower.
Motorgy offers you countless options of used cars for sale in Kuwait across all categories, models, and engine types, allowing you to choose your dream car with the click of a button while viewing the technical inspection report that details its full condition, all from the comfort of your home.
Read also: The importance of engine oil in a car
What are the main parts of a car engine?
The main parts that make up a car engine are as follows:
Camshaft
The camshaft is located at the top of the engine block, specifically on the cylinder head. Its function is to open and close the valves responsible for the intake and exhaust of the fuel-air mixture and exhaust gases to and from the cylinders at carefully timed intervals. It is connected to the crankshaft via a belt or chain to derive its motion from it.
Valves
Engine valves, also known as intake and exhaust valves, are thin at the top and wide at the bottom and are located in the cylinder head. They are responsible for regulating or controlling the flow of the air-fuel mixture and exhaust gases to and from the combustion chambers or cylinders while the engine is running, and their timing must be very precise for the engine to operate without issues.
Cylinder Head
The cylinder head is a vital and essential component of the engine, containing many parts such as valves, springs, rocker arms, and the camshaft. It is located directly above the engine block—that is, above the cylinders—and features the upper cylinder chambers that seal against the block to completely close off the lower chambers.
Engine Block
The engine block is the foundation of the car’s engine. It contains the pistons and the water and oil passages that run through it to cool and lubricate the engine at all times. The block also contains the camshaft at the top and the crankshaft at the bottom, in addition to the main engine cylinders in the middle, and the other parts are assembled onto it to complete the engine.
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Pistons
Pistons, or cylinders, are moving parts located inside the cylinders that move up and down during the engine’s cycles. They feature compression rings to maintain combustion pressure and oil rings to lubricate the cylinders and ensure smooth movement. The pistons are mounted on the crankshaft, and with each rotation of the crankshaft, they move up and down inside the cylinder.
Crankshaft
The crankshaft is located at the bottom of the engine block and is attached to it. The pistons are attached to the crankshaft. It operates using centrifugal force to convert the pistons’ vertical motion into a reciprocating lateral motion, which is then transmitted to the rest of the components and ultimately to the wheels.
Connecting Rods
The connecting rods link the pistons to the crankshaft; meaning they are the link between these two components. Through the movement of the crankshaft, they convert the reciprocating motion of the pistons into rotational motion, moving in accordance with the crankshaft’s motion and speed. The connecting rods feature lower rings that connect them to the crankshaft to ensure smooth operation and minimize friction as much as possible.
Other Parts
The engine contains many other important parts without which it cannot function, such as wires and hoses for the operating and fuel systems, spark plugs, injectors, and air intakes and exhausts, in addition to the oil pan, oil filter, and numerous gaskets, connectors, and seals.
