Tips Sahabat

Understanding the Function of the Crankshaft in Four-Wheeled Vehicles

10 April 2025
fungsi poros engkol

In a four-wheeled vehicle engine, there are several components that you must know. One of them is the crankshaft, which functions to maintain the car's performance. 

This engine component will be directly connected to other parts, such as the cylinder block to the piston rod. So what are the other functions of the crankshaft? Here is the information. 

Components of Crankshaft

In the combustion engine, there are many important components that are interconnected. One of the important components in the combustion engine is the crankshaft, also known as the crankshaft. 

In certain parts of the car's internal engine, this crankshaft is also referred to as the crank.  To ensure the engine operates well, this crankshaft is equipped with various parts. 

There are at least five components that are directly related to this crankshaft in the internal engine of a four-wheeled vehicle. These parts include crank arm, crank pin oil hole, crank weight, and crank main journal.

Each part also has a significant function of the crankshaft and a working mechanism. One of them is the crank pin journal, which is directly related to the piston rod. 

In this component, there is an oil hole that is useful for lubricating the friction between the piston rod component and the crankshaft. This part will be fitted with a rod bearing to ensure it operates correctly. 

The next important component is the crank pin oil hole. As the name suggests, this component is a hole used to channel oil from the engine to all parts of the crankshaft. 

To support the engine's performance in a four-wheeled vehicle, this component is also directly related to the crank pin and main journal. Additionally, the main journal component is usually equipped with a main bearing and oil hole.

This is very important to keep the crankshaft functioning optimally. Usually, the function of the crankshaft main journal equipped with a main bearing performs better because it is lubricated with oil. 

Not only that, there is also a counterweight that is useful for balancing the crankshaft while it rotates. There are holes specially designed to adjust the weight of each of these components. 

From here, the engine's performance will be more balanced and operate optimally. In addition, its presence also ensures that the crankshaft components are connected correctly. 

Read also: Don't Let It Break, Here Are the Functions of the Timing Belt and Its Maintenance

Function of Crankshaft in Cars

The main function of the crankshaft in a four-wheeled vehicle is to convert the motion of the piston. This process will create rotational motion so that it can drive the flywheel correctly. 

Usually, this component works by rotating with the cylinder block and piston. This will keep the up and down motion of the piston strong and stable. 

The rotation of the engine will not work optimally without the crankshaft, as this component transmits power to the car's transmission. 

Thus, the four-wheeled vehicle can move and change direction. This entire process will enhance the function of the crankshaft and ensure it works according to its part. 

Without the crankshaft in the engine, the four-wheeled vehicle will certainly not operate optimally. This is what drives the transmission or power transfer in the car. 

Read also: 3 Types of Car Engines Based on Their Configuration

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