5 Essential Car Engine Parts and Functions

5 Essential Car Engine Parts and Functions

A car’s engine is composed of around 200 parts. Knowing how each of them works is essential for maintaining your car’s longevity. Here are 5 essential parts of your car’s engine that you should know. Understanding how these parts work will help you know what’s wrong with your car, and can help you find a reputable mechanic who can repair it properly. Also, keep in mind that not all of these parts are the same.

Oil pan

The oil pan in a car engine is an integral part of the vehicle’s engine. It holds six liters of oil and is designed to fit snugly into the vehicle’s available space near the chassis and steering gear. The oil pan is also designed with ribs to reduce turbulence and improve stiffness of the flat section. In addition, it features warm-embossed brass inserts to accommodate the oil level switch and discharge screw.


Piston car engine parts and functions are crucial to the proper functioning of an automobile. Pistons play an integral role in the combustion process and generate energy for the rest of the engine parts, including the crankshaft and flywheel, which transfer this energy to the wheels. Pistons also feature valve reliefs to reduce the amount of pressure on the crown, which is the area directly in contact with hot combustion gases. Pistons also have a slight inward taper from the bottom, allowing for greater clearance around the top land.

Intake manifold

The intake manifold is an integral part of your car’s engine. It is responsible for providing the air-fuel mixture that powers your engine. During the combustion process, air is sucked into the manifold through the throttle body. Fuel is injected into the manifold’s other end via the fuel injector. When the mixture reaches the cylinders, it is burned by the combustion chamber.

Cylinder block

A cylinder is the central part of a car’s engine. Its main function is to compress air and fuel into an oxidized gas mixture, which burns to produce steam. This gas is called gasoline, and its combustion occurs in a cylinder. Cylinder blocks are made of cast iron or aluminum, and each cylinder contains a spark plug and an exhaust valve. A two-stroke engine also lacks an oil sump.


The crankcase is a structure that is divided through the axis of the crankshaft. It holds the cylinders, which screw into holes facing right. The combustion chambers have rocker arms attached to them. The bottom section contains the oil pan and lubrication system. It also houses the water cooling system. If you look at the engine from the front, you can see a curved section and a box-like structure on the right.