Electromagnetic Gearing Advances

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{Patent applied}

Electromagnetic gearing represents a significant advancement over traditional mechanical power transmission. Rather than relying on interlocking physical teeth, these systems utilize electromagnetic coils and permanent magnets to transfer rotary motion without mechanical contact.

In spur gear power transmission, typically only one or two teeth are engaged at any given time. A standard spur gear pair exhibits a contact ratio between 1.2 and 1.6, indicating that for most of the meshing cycle, a single tooth pair bears the load, with brief transitions to two pairs.

The new electromagnetic gears can transfer rotary motion from one shaft to another without a mechanical connection, using an electromagnetic coupling. This will enable the reduction of heavy metal shafts and gears, improving the assembly's reliability while reducing the weight. As a result, electromagnetic gears can transfer motion regardless of the relative angle. Although they provide a motion ratio similar to that of traditional gears, they operate without contact.

It features:
Non-Contact Power Transfer: Rotary motion is transferred from an input shaft to an output shaft via an electromagnetic connection. Because there is no physical contact, the system can transfer motion regardless of the relative angle between the shafts.
Dynamic/Variable Gear Ratios: Unlike traditional magnetic gears that have fixed physical ratios, electromagnetic gears can alter their effective number of magnetic poles in real time. This is done by dynamically changing how the coils are energized, adjusting the magnetic field strength and sequence.
Full Engagement: In standard mechanical gearing (like spur gears), power is typically shared by only 1 to 2 teeth at a time during the meshing cycle. In an electromagnetic gear, the magnetic fields allow the equivalent of the entire output wheel's "teeth" to be engaged simultaneously to deliver movement.

 

Mechanical drive Vs Electromagnetic drive Comparison Table

Aspect	Mechanical Shaft Drive	Electro-magnetic Transmission
Power Transfer	Direct torque via drive shaft	Alternator generate electricity send through cables
Efficiency	High at constasnt speed, losses in joints	Slight conversion loss, but felxible control
Maintenance	Requires lubrication and alighnment	Mostly electronic, fewer moving parts
Flexibility	Fixed gear ratio	Variable torque and speed via inverter
Noise and vibration	Mechanical contact causes noise	Smooth, silent operation
Scalability	Limited by shaft length	Easy to extend or modularize

 

Usually, in mechanical gearing, power is transmitted to the output through one gear tooth, but in electromagnetic gearing, the entire output wheel's teeth may be engaged in delivering movement.

Electromagnetic Gears in Propulsion and Industry

Examples of applications where you can replace connections between two shafts:

1.A straight connection between the input shaft and the output shaft
2.Connection between two shafts in different geometries
3.Belt connection between two shafts
4.Chain connection between two shafts
5.Connection between two shafts using a universal joint
6.Connection between two shafts where the output shaft has to run at a different speed
7.Connection of the second shaft in which it has to drive in the opposite direction
8. It includes replacing gearboxes, belt drives, and chain drives with electromagnetic gears. Reverse can be arranged by placing coils in reverse positions on output shaft.

This concept illustrates a breakthrough in vehicle power transmission - replacing the traditional mechanical driveshaft with an electromagnetic system. The internal combustion engine drives an alternator that sends three phase electrical power through cables to rear mounted motors. These motors convert electricity back into torque, propelling the wheels without any physical shaft connection.

Examples of application:

1. In an I.C. engine, power transmission from crank shaft to cam shaft

In an IC engine, power from the crankshaft has to be transferred to the camshaft at half the crank speed using gear wheels, which requires a large space and accommodates the space of the engine body. Electromagnetic gearing uses electromagnetic coils and permanent magnets to achieve variable gear ratios, enabling dynamic control and adaptability. Unlike traditional magnetic gears, which are limited to fixed ratios, electromagnetic designs allow real-time adjustment of torque and speed via coil excitation. This makes them ideal for applications requiring precision, efficiency, and responsiveness, such as in electric vehicles and industrial automation. Electromagnetic coils allow variable gear ratios by controlling the magnetic field strength and sequence rather than relying on fixed physical gear teeth. The new electromagnetic gears are capable of transferring rotary motion from an input shaft to an output shaft without a mechanical connection between the said two shafts, through an electrical connection. This will enable to reduce heavy metal shafts and gears to reduce the weight and improve the reliability of the assembly of components. As a result, electromagnetic gears are able to transfer motion no matter the relative angle. Although they provide a motion ratio as a traditional gear, such gears work without touching and are immune to wear of mating surfaces, have no noise, and slip without damage.
Electromagnetic coils allow variable gear ratios by controlling the magnetic field strength and sequence rather than relying on fixed physical gear teeth.
The signal strength of the input may be amplified when the energized signal is fed to the output shaft.

2. Vehicle power transmission

In an electromagnetic gear, the effective number of magnetic poles can be altered dynamically by changing how the coils are energized.

This concept illustrates a breakthrough in vehicle power transmission - replacing the traditional mechanical driveshaft with an electromagnetic system. The internal combustion engine drives an alternator that sends three phase electrical power through cables to rear mounted motors. These motors convert electricity back into torque, propelling the wheels without any physical shaft connection. Designed in collaboration with Copilot, this approach demonstrates how smart electrical coupling can deliver smoother, quieter, and more efficient motion for next generation vehicles.

This electromagnetic differential system replaces heavy mechanical linkages with intelligent magnetic synchronization. By dynamically energizing coils, each wheel motor adjusts torque and speed independently, achieving smooth cornering and adaptive traction. This innovation merges the precision of electromagnetic gearing with the flexibility of electronic control - a leap toward lighter, smarter mobility.

Our approach reimagines vehicle power transmission by replacing the traditional driveshaft with a clean, electromagnetic system. Instead of mechanical linkages, the IC engine generates electricity through an alternator, which flows via three phase cables to rear mounted motors. This innovation - designed in collaboration with Copilot - highlights how smart electrical coupling can deliver smoother performance, reduce maintenance, and open the door to scalable, next generation mobility solutions.

 

 

Option 2 - Intelligent magnetic synchronization.

In this option, the rear wheel speed is controlled independently from the speeds of the left and right front wheels.
An input signal is fed by a magnetic disk running along with two front wheels independently. During the curvature, the signals issued by the two front wheels will be different. Then a proportional signal is emitted from the input electromagnetic coils housed in the caliper with the pemanent magnets on electromagnetic disk attached to the particular front wheel. By dynamically energizing coils, each rear wheel motor adjusts torque and speed independently, achieving smooth cornering and adaptive traction. This innovation merges the precision of electromagnetic gearing with the flexibility of electronic control - a leap toward lighter, smarter mobility. Hence, this electromagnetic differential system replaces heavy mechanical linkages with intelligent magnetic synchronization.

This exposed plan shows how Option 2 leverages electromagnetic synchronization to intelligently manage wheel speeds, replacing traditional mechanical differentials with a lighter, more flexible system.

 

This electromagnetic gear system having an intelligent differential setup, where the rear wheel speed is controlled independently from the left and right front wheels. In this system magnetic disks are mounted similar to disk brakes on both front wheels and they sense rotation by feeding proportional inputs to the coils, allowing each rear wheel motor to dynamically adjust torque and speed. The Adaptive Control Rear wheel motors adjust torque and speed separately on rear wheels, maintaining synchronization between front and rear systems.

 

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