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Magnets for Automotive Industry

A Case Study: Car Rotary Solenoid

The challenge:


To improve the magnetic torque of an existing rotary solenoid under size limitations.

The solution:

Magma performed a magnetic simulation for the existing solenoid and recommended changes that would improve performance.



About Magnets for Automotive Industry:

The number of electric DC motors and solenoids in every automobile and future design is double. They are found, for example, in:

  • Electric windows – motor.
  • Windshield wipers – motor.
  • Door locking systems – solenoid.

One of the essential components in electric motors is the magnet.  The magnet is usually the static part of the motor and supplies the rejection power to create circular or linear movement.

Most engines/motors traditionally use Ferrite-type magnets. Still, there is growing awareness of the advantages of Neodymium Iron Boron magnets – especially in high-performance engines or where down-sizing is an essential factor. Considering all new technologies are aimed at decreasing the product’s overall size, these motors will likely soon take over the entire market.

Free and low dysprosium NdFeB magnets are used increasingly in the automotive industry and have become a preferred choice for designing a new magnetic application for the automotive industry.

Magma is considered one of the most important manufacturers concerning Ferrite magnets for the automobile industry. In addition, prototypes of solenoids can be designed and produced as well as full-scale production batches.

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