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Magnetic Repulsion Piston Engine - Mechanical Project/Seminar

Magnetic Repulsion Piston Engine - Mechanical Project/Seminar 

Demand is growing for the need of alternative fuels for transportation. Electricity with its versatile applications is being utilized to switch from conventional combustion vehicles to electric vehicles. The scenario of travelling is changing rapidly with metros, electric rails, electric aeroplanes (solar), etc. Basically it indicates that electrical energy is being used almost everywhere to drive our
life. But the current machines we use today are low in efficiency. Hence we require products with more power but also with higher efficiency. Magnetism possesses a magnificent opening for development. Bullet trains using the technology of magnetic levitation have proved the strong nature of electromagnetic fields. Keeping in mind the arising needs of the industry, in this project we tried to design and experiment, a system called Magnetic Repulsion Piston Engine, which makes use of magnetic force to drive a load. The working principle is based on attraction and repulsion between a permanent magnet and an electromagnet. The forces thus developed are used to generate mechanical power. Successful development in this field can actively help switch over IC Engines.


The development the magnetic repulsion piston engine refers to the system where the piston attached with a permanent magnet is being pushed by an electromagnet, and again being attracted. The reciprocating motion of the piston is converted into rotary motion by the con rod and crank. 

The uniqueness of the development is that Magnetic Repulsion Piston Engine can be incorporated in various machines performing various tasks. Not only in automobiles, but it can be used as the prime mover in locomotives, lawnmowers, golf cart as well. They can complement or replace existing internal combustion engines that use fossil fuels. This system is environmentally friendly, and does not pollute the ecosystem and its application tends limitless with
working cost being minimal.
With this we would like to bring forward the most important components of our system. The power generation system consists of the solenoid, permanent magnets, and a battery.
The mechanical sub-system mainly consists of the slider crank mechanism. And the electronic control system comprises a sensor and switching circuit.

As per the literature survey, it was found that there was a need to design magnetic engines having a higher load carrying capacity. Models made earlier produced power in a very low torque range which could not be used in any application. The trial model made gave intermittent motion and did not seem powerful enough to drive a load. Also the maximum speed achieved was 250 r.p.m. Thus we set up a target to build up a prototype of the MRPE having a load capacity satisfactory enough to be used in an application. We aimed to design the engine to run up to 1000 r.p.m. with constant torque characteristic.

Design of Components
Various components had been used in this system. We would like to bring about their design and selection procedure.


The design of electromagnet was about using the right gauge of wire and with the right number of turns. But 1st the armature core had to be designed and manufactured. Two coils could have been designed, but this would consume more energy. Hence to minimize the power losses, we calculated to use both the power of attraction and repulsion, instead of only repulsion. This would bring about using only one coil, and more torque can be obtained directly because the power output would be the summation of both attraction and repulsion. This indicated that overall there would be power generation in every moment of the piston. Hence the core design became a curved beam like structure with two flat faces facing the pistons, on each face. This also had an added advantage that the magnetic circuit would now be a closed one, which had fewer losses in the functioning. The core was made with Mild Steel (Bright), as it acts as a soft iron core. The diameter of the core is 50mm throughout except at the end faces. At the end faces the diameter is 55mm with a thickness of 10mm. There were 5 layers of windings done, with total number of turns being 1300. The material used for winding is annealed copper.


Multi piston cylinder engines are made in different configurations like inline, opposed type, V oriented, W oriented etc. based on the vehicle specifications. But our aim was to design the setup using a multi cylinder engine, and not to design the engine. Thus we decided to purchase engine from market rather than design it and manufacture it.
Magnetic Repulsion Piston Engine
Magnetic Repulsion Piston Engine
Advantages over fossil fuel engines 
  1. Fuel less engine.
  2. Easy to design. 
  3. Less power consumption. 
  4. No waste production. 
  5. Less running cost and maintenance free.
  6. Environmental friendly, very high efficiency engine.
  7. Can work as an automobile engine, aircraft engine, locomotive engine, ship engine, etc.
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