This rather cranky invention of mine relates to converting an internal combustion engine to be powered by an electric motor.

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It works by removing, and discarding, the engine's cylinder head and mounting, in its place, a crank shaft to oppose the existing crank shaft in the engine. The two cranks will then be connected via the pistons or piston connecting rods. Thus when the new crank is turned it will turn the engine's existing crank, thus operating the gearbox / drive. In turn an electric motor will be connected to the new crank to make the vehicle, in which the engine is mounted, fully electric.

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Mainstream conversions will always use the more efficient solution of connecting the electric motor directly to the transmission or differential. So, this invention is suited for DIY projects where you wish to keep the original car as intact as possible and find sourcing and mounting an identical crank, to the one already in the car, easier than making a bespoke adapter plate to connect the transmission directly to the electric motor. However, there's a possibility that it could be of use for a home installed DIY kit where the fitter would only need to (i) remove the cylinder head (ii) mount a supplied kit, including the motor (iii) fit the battery pack in the vehicle's boot (iv) connect the new battery cables, 12 Volt battery cables, ignition wires and accelerator cable to the kit mentioned in point (ii). Perhaps something like a Morris Minor where there is quite a bit of space under the bonnet, including the bulkhead where the 12 volt car battery traditionally sits.

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This invention was filed as patent application number GB2209957.6 on 07/07/2022. This is just to mark the idea as my own work. I do not intend to apply for full patent and you are free to use this idea.