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The presence of a camshaft in a car allows the engine to control the timing of the intake and exhaust valves, which regulate the entry of air and fuel as well as the release of exhaust gases. This process significantly improves both performance and efficiency.
However, many people are still unfamiliar with the functions of this crucial engine component.
In this article, we will discuss some of the most important camshaft functions that you may not know about. Let’s dive in!
The camshaft in a car is one of the key components in the combustion process and helps maintain engine efficiency. So, what are the main functions of a camshaft in a car? Here’s the explanation!
The first function of the camshaft is to open and close the valves in accordance with the firing order.
On the camshaft, the part responsible for this process is called the cam lobe, which comes in two shapes, which is a round section that closes the valve and an elongated section that presses the valve open.
Another function of the camshaft is to rotate the distributor's shaft, depending on the type of engine used. This is usually located in the ignition system.
As the camshaft rotates, it sends signals to the distributor's shaft, causing it to rotate and perform its function accordingly.
In addition to controlling the valves, the camshaft also serves to drive the fuel pump in certain vehicles.
This function specifically applies to cars that still use mechanical fuel pumps. In older engine systems, the mechanical fuel pump relies on the camshaft’s motion to deliver fuel to the carburetor.
This mechanism ensures a steady fuel supply so that the engine can run properly.
However, with advancements in automotive technology, this system has largely been replaced. Most modern cars now use electric fuel pumps powered by electricity, eliminating the need for direct camshaft operation.
Electric fuel pumps are considered more efficient, practical, and better suited for modern fuel injection systems.
Therefore, the camshaft’s role as a driver for mechanical fuel pumps is mostly relevant to older vehicles, while modern systems rely on electric pumps.
The final function of the camshaft is to serve as a sensor point to detect its rotations.
This role allows the camshaft to accurately determine rotation angles, ensuring smooth operation without causing defects or damage to other engine components.
With this function, engine performance becomes more precise, as each movement is detected with accuracy.
However, not every car engine uses this feature. This function is typically found in engines with EFI or Electronic Fuel Injection technology.
In EFI engines, the camshaft is specially designed with a reference gear that integrates with a blade sensor.
This design enables the camshaft to work with the sensor to automatically determine its position and rotation angle.
The mechanism is simple yet highly effective. The engine’s gears help the camshaft detect each rotation angle precisely. As the camshaft turns, the sensor reads the gear movement and ensures accurate rotational data.
This information is then used by the EFI system to regulate fuel injection and ignition timing.
As a result, the camshaft sensor function not only ensures precise rotation but also enhances overall engine efficiency and performance.
*PT Lippo General Insurance Tbk is licensed and supervised by Financial Services Authority (OJK)
Car brake pads are one of the most vital components in the braking system. Their main function is to create friction with the brake disc, allowing the vehicle to stop or slow down.
Because of this crucial role, it’s important to check your car’s brake pads regularly to ensure optimal performance and maintain driving safety.
Here’s a complete guide about the car brake pads to help you better understand how they work, their types, and how to check them properly.
To understand how brake pads work and function within the braking system, here’s the process:
When the brake pedal is pressed, the pressure is transmitted through the brake fluid to the caliper.
The caliper then pushes the brake pads against both sides of the brake disc, which rotates with the wheels.
This creates friction against the wheel’s rotation, causing the vehicle to slow down and stop.
Semi-Metallic, known for durability and excellent heat transfer. These brake pads are usually made from synthetic organic materials mixed with processed metals, giving them high heat resistance.
Organic, made from a blend of resin, carbon, glass, rubber, and other materials. Vehicles using this type are typically free from squeaking sounds. However, regular inspections are needed to ensure the pads don’t wear out completely.
Non-Asbestos Organic or NAO, offers better performance compared to brake pads that are made of metal. They provide reliable performance and improved safety while driving.
Ceramic, considered the best performing type, is often found in luxury cars due to its higher price. Ceramic brake pads don’t leave residue or produce annoying noises, making them highly efficient.
Generally, the right time to replace car brake pads is when you hear a squeaking or squealing sound during braking.
The physical condition of the brake pads can also indicate when they need replacement. That’s why it’s highly recommended to check their condition regularly.
Most disc brake pads are equipped with a thin metal plate that serves as a wear indicator.
When this small plate rubs against the brake disc, it produces a squeaking sound as a warning sign.
If the plate is already touching the brake disc, it means the brake pads must be replaced immediately.
Before replacing them, make sure the caliper and brake disc are cleaned properly to avoid dirt buildup, such as debris or residue from worn brake pads.
This step is essential to optimize braking performance, especially since dirt mixed with water can disrupt the braking process.
That’s the complete discussion about car brake pads, including their function, how they work, different types, how to check them, and the right time for replacement. Hope it helps!
*PT Lippo General Insurance Tbk is licensed and supervised by Financial Services Authority (OJK)
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