Neodymium or NdFeB magnets are counted among the most powerful magnets.
Being easily available at any store or online magnet suppliers, they are equipped with extreme magnetic field strength, meaning that they can attract objects from a considerable distance.
In fact, a 2-gram neodymium magnet can stick a substance more than 640 TIMES than its weight.
Due to their incredible magnetic strength, neodymium magnets are widely used for various applications, including the automotive industry. Not only these magnets are powerful, but they can also withstand the temperature, vibrations, and other conditions associated with the automotive environment.
No wonder neodymium magnets are used in various parts of a vehicle to improve performance, efficiency, and safety. And this blog is dedicated to those “uses” of neodymium magnets in the automotive industry.
Let’s get started.
Electric Power Steering (EPS)
Electric power steering (EPS) has become increasingly popular in modern vehicles due to its numerous advantages over traditional hydraulic power steering systems. One of the key components that facilitate EPS is the neodymium magnet.
Usually made of sintered neodymium, these magnets are typically used in EPS systems to provide the necessary torque to assist with steering.
When an electric current is passed through a coil of wire surrounding the neodymium magnet, it creates a magnetic field that interacts with the magnet and causes it to rotate. This rotation generates the necessary torque to assist with steering.
Neodymium magnet supports EPS in many ways.
First, neodymium magnets are incredibly strong for their size, which means that they can provide a high level of torque even in small motors. This allows for smaller and more compact EPS systems, which can save space and reduce weight in the vehicle.
Additionally, neodymium magnets are highly resistant to demagnetization, which ensures that the EPS system will remain functional even after years of use.
Because neodymium magnets are so strong, they require less energy to generate the necessary torque for steering.
Neodymium magnets are critical components in airbag deployment systems, playing a crucial role in ensuring that the airbag deploys rapidly and efficiently.
In these systems, the neodymium magnets are employed to hold a plunger in a stable position, which is then released when the airbag deploys.
During a collision, the airbag control module receives signals from various sensors in the vehicle that indicate the severity of the impact. The control module then sends an electric current to the neodymium magnets, which energizes them and causes them to release the plunger. The plunger then activates the airbag inflator, which rapidly fills the airbag with gas, ensuring that it deploys in a fraction of a second.
Fuel Injection Systems
Neodymium magnets are used in fuel injection systems to control the flow of fuel into the engine. The magnets are used in fuel injectors to open and close the valves that allow fuel to enter the engine. The use of neodymium magnets in fuel injection systems helps improve the efficiency of the engine and reduce emissions.
Anti-Lock Braking Systems (ABS)
One of the most important safety features in a car is the Anti-lock Braking System (ABS), which uses magnets to prevent accidents or make them less severe. By slowing the car down while still allowing the driver to steer, ABS enables the driver to maneuver around obstacles during accidents, potentially saving lives.
Apart from the ABS, neodymium magnets are also used in several other safety features in cars. These include the locking system, windshield wipers, and seat belt indicator.
Neodymium magnets are ideal for starter motors because of their high magnetic field strength, which provides the necessary torque to start the engine quickly and efficiently.
Audio and Entertainment Systems:
Neodymium magnet is also used in many vehicles’ audio and entertainment systems to improve audio quality. Thanks to their efficiency to generate the powerful magnetic field required for high-quality sound reproduction.
Hybrid Vehicle Systems:
Hybrid vehicle systems rely on a combination of electric power and gasoline. And neodymium magnets are used to power the electric motor being used in combination with gasoline.
Electric Door and Window Locks:
Electric windows and door locks are controlled by electric motors that are powered by neodymium magnets. This makes it more energy-efficient and convenient for the driver than conventional mechanical systems.
Neodymium magnets are a popular choice for mounting signs or light bars being attached to the vehicle roof due to their strong magnetic force.
They are capable of holding a significant amount of weight, so even large signs or light bars can be securely attached to the roof of a vehicle. Examples include magnetic signs that are easy to attach and remove from the vehicle.
Moreover, using neodymium magnets for this purpose also ensures that there are no permanent damages or modifications made to the vehicle’s exterior. The magnets can simply be removed when not in use, leaving no marks or scratches behind.
Neodymium magnets have revolutionized the automotive industry by enabling the development of high-performance and efficient vehicles. They find application in various components of a vehicle, including the EPS system, hybrid and electric vehicles, sensors, airbag deployment systems, fuel injection systems, ABS, starter motors, windshield wipers, power windows, alternator, clutch, and transmission.
With their exceptional magnetic properties and versatility, neodymium magnets will enable the development of new and innovative automotive technologies that will transform the way we drive.