Your engine, like humans, requires energy to move. In actuality, the engine’s primary function is to convert energy from a fuel into movement power through the use of a spark. Internal combustion generates movement by causing small, confined explosions. While many of us think of the engine as a single large component, it is made up of multiple smaller components that function together. You may be familiar with the names of some of these vehicle engine parts, but it’s crucial to understand what they do and how they interact with other sections of the engine.

Learn about your engine.

The cylinders in automobile engines are sealed and robust metal cylinders. The bulk of modern cars has four to eight cylinders, with some having up to sixteen! The cylinders are designed to open and close at precisely the right times to allow fuel to mix with the spark for internal combustion, as well as to discharge the exhaust gases created. While an engine has many elements, we’ve collected a list of the most important automotive engine parts and their roles. To find out where they are on your engine, look at the diagram.

Different parts of car engine.

Engine Block:

The engine’s heart. It’s usually composed of aluminum or iron and has many holes to enclose the cylinders as well as allow water and oil flow routes to keep the engine cool and lubricated. The routes for oil flow are narrower than those for water flow. The pistons, crankshaft, camshaft, and between four and twelve cylinders are housed in the engine block in a line, also known as inline, flat, or in the shape of a V, depending on the vehicle.


Pistons are flat-topped cylindrical objects. The role of the piston is to transfer the energy created by combustion to the crankshaft, which then moves the vehicle. During each rotation of the crankshaft, pistons go up and down within the cylinder twice. Pistons in engines spinning at 1250 RPM will travel 2500 times per minute up and down. Piston rings are found inside the piston and are designed to aid in compression and reduce friction caused by the cylinder’s constant rubbing.

Crankshaft :

Within the crankshaft journals, the crankshaft is found in the lower half of the engine block (an area of the shaft that rests on the bearings). The connecting rod connects this precision-machined and well-balanced mechanism to the pistons. The crankshaft converts the up and down action of the pistons into a reciprocal motion at engine speed, similar to how a jack-in-the-box works.

Cylinder head:

The cylinder head is bolted to the engine and sealed with a head gasket. The valve springs, valves, lifters, pushrods, rockers, and camshafts are all found in the cylinder head, and they control passageways that let intake air into the cylinders and exhaust tunnels that remove exhaust gases during the exhaust stroke.

Timing Belt/Chain:

The engine’s camshaft and crankshaft are synced to ensure perfect timing. The camshaft and crankshaft pulleys are grasped by cogs in the belt, which is constructed of heavy-duty rubber. The chain wraps around the pulleys with teeth, similar to a bicycle chain.

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