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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)
A properly functioning car AC can provide comfort to the driver while driving, making the air cooler and improving air circulation.
To perform its function, a car's AC consists of various components that work together and support each other.
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To perform its job properly, the car's AC system consists of various components that work together for optimal results.
But do you know the functions of each car's AC component and what parts make up the system? Let’s take a closer look!
The first component in a car AC system is the compressor, which pumps freon gas so it can circulate to other AC parts.
In addition, the compressor compresses the refrigerant, changing it from a gas into liquid form.
The AC compressor is divided into two sections that both work to pump refrigerant toward the condenser. The first one is the suction line (low pressure), connecting the refrigerant from the evaporator, and the discharge line (high pressure), connecting the refrigerant to the condenser.
The next car's AC component is the condenser, which helps regulate the AC temperature inside the car.
The condenser works by releasing heat from the freon, which is then cooled down with the help of the cooling fan.
The next and most familiar component in car AC is freon, a chemical refrigerant that absorbs heat from the cabin air and releases it outside.
Because of this function, if your car's AC no longer blows cold air, one of the possible causes is low or empty freon.
The receiver dryer filters dirt and moisture from the AC system. It is located between the condenser and the expansion valve.
This component helps protect the AC system from issues such as clogged expansion valves or compressor corrosion, which can reduce the overall performance of the AC.
The expansion valve changes liquid freon into gas through a spraying process.
This process makes the refrigerant colder before it flows into the evaporator to absorb heat and produce cool air inside the car cabin.
The evaporator plays a vital role in cooling. Its main job is to absorb heat inside the cabin and convert it into cool air.
Sometimes referred to as the AC filter, the refrigerant in the evaporator is cooled first before it flows into the cabin to provide cold air.
The cooling fan helps lower the condenser’s temperature by blowing air over it. This process cools the freon more effectively, making the AC system more efficient.
Without the cooling fan, the freon would not cool properly, the AC system would be less effective, and its performance could drop significantly.
The magnetic clutch in a car's AC is an electrical component that stops the freon pressure when it gets too high.
Even though the engine pulley keeps spinning, the magnetic clutch controls when the compressor turns on and off.
When the compressor is active, freon pressure rises, especially when the engine is revved.
The magnetic clutch uses magnetic force to connect or disconnect the compressor pulley and shaft, protecting the AC system from damage.
In addition to the car AC components above, there are some other important components as well, including the thermistor, high-pressure hose, low-pressure hose, blower, pressure switch, relay, and cabin filter.
*PT Lippo General Insurance Tbk is licensed and supervised by Financial Services Authority (OJK)
Fuel-efficient cars are often the top choice for many Indonesians, especially in big cities like Jakarta, where heavy traffic can significantly increase fuel consumption.
Choosing the right car can help reduce expenses without sacrificing engine performance.
Here are some recommendations for fuel-efficient cars available in Indonesia, their advantages, and comparisons among different options. Check it out!
The first recommendation for a fuel-efficient car is the Honda Brio, a city car that has become quite popular in Indonesia over the past few years.
On highways, Honda Brio’s fuel consumption is impressive, as it can reach 24 km/liter compared to the LCGC regulation standard of 20 km/liter.
Aside from being fuel-efficient, the Honda Brio also offers a spacious and comfortable cabin, as well as a choice between a manual or automatic CVT transmission.
Its affordable price, starting from Rp 170.4 million for the Satya M/T type, is also a strong appeal.
The Suzuki All New Ertiga is also considered a fuel-efficient car, with an average fuel consumption of 10 – 13 km/liter in the city and 18 – 21 km/liter on highways.
This is thanks to its K15 B-coded engine with a capacity of 1.462 cc, 4 cylinders producing 103.2 hp at 6.000 rpm, and peak torque of 138 Nm at 4.400 rpm.
Additionally, this car utilizes a new platform called HEARTECT, which reduces the car’s weight by up to 15%, thereby improving fuel efficiency.
Its market price varies, with used units priced from Rp 100 million to Rp 230 million, while new units are priced between Rp 228.4 million and Rp 262.8 million.
Launched in 2003, the Toyota Avanza has become a household name and a popular choice for those seeking an affordable, fuel-efficient car.
With a tank capacity of 43 liters, the Avanza can travel long distances, achieving an average fuel consumption of approximately 17.6 km/liter.
In the market, used Toyota Avanza units are priced from Rp 127 million to Rp 227 million, while new units range from Rp 233.1 million to Rp 272.5 million.
The Honda All New BR-V is another fuel-efficient option, with fuel consumption reaching 11.7 km/liter in city driving and 14 km/liter on highways.
It also features an eco-indicator, which helps drivers adopt a more efficient driving style.
The Honda All New BR-V is available at prices ranging from Rp 292 million to Rp 385 million, depending on the type and region.
Next are the Daihatsu Sigra and Toyota Calya, both classified as LCGC cars with two engine capacity options, 1000 cc and 1200 cc.
The Toyota Calya can achieve up to 20 km/liter when driving at a constant speed of 100 km/h. At 60 km/h, fuel consumption improves to around 25 km/liter.
In terms of pricing, used Toyota Calya units range from Rp 101 million to Rp 142 million, while new units are priced from Rp 167.6 million to Rp 187.4 million.
So, those are some recommendations for fuel-efficient cars that could be your choice, offering driving efficiency without sacrificing performance. Hopefully, this guide is useful!
*PT Lippo General Insurance Tbk is licensed and supervised by Financial Services Authority (OJK)
Left-sided abdominal pain can be caused by many factors, ranging from mild conditions such as bloating to much more serious illnesses that you should be aware of.
If the pain does not subside within 1 to 2 days, MyProtection friends should immediately consult a doctor to prevent dangerous health complications, such as kidney stones or ovarian cysts.
This is because the left side of the abdomen is where several vital organs are located, including the spleen, pancreas, left kidney, large intestine, liver, and adrenal glands.
In this article, we will discuss in more detail the possible causes of left-sided abdominal pain and the accompanying symptoms. Read on to learn more!
