I have no money, and therefore no hope of ever doing anything with this thought, and its been 6 months now, so im giving it away to the world. I've spoken to patent lawyers, and automotive mechanical engineers, all who have told me how much money i need in order to monetize an invention like this. so i give up, and here it is.
I was obsessed with differential designs for a while, and one night i put my head to the pillow and for some reason imagined what would happen if the spider gears within the differential carrirer were physically goverened by something to electroncialy control where the drive goes. Then i just sporadically thought of controlling them via a worm gear driven by an RPM controlled motor mounted on the rotating differential assembly.
Then as time unfoled, i began to realise this idea was actually plausible. A worm gear is a one way gear, meaning it can drive something, but the gear it is driving can not drive it back, provided the worm gear is of the appropriate .. i dont know the word, appropriate number of teeth per length; appropriate drive ratio.
A few days of obsessing and i realised what i had accidently invented was significantly better than any other diffferential mechanism in existance, clutch packs all slip and are best guess applications at best, whereas my basic idea was basd around the idea of completely controlling the internals of the differnetial to a predetermined ratio.
This ratio is currently calculated by computers with systems that use clutch pack diffs, but this calculation results in an output whee a clutch is pressed together until the desired differntial ratio is achieved, and it is very loose and cumbersome, and also slow.
Now to the nitty gritty.
The design is completely differnet to other designes in that it 100% regulates the speed of the inside and outside wheel with absolutley no splip. when the steering wheel is dead centre, the differential is 100% "locked", and moves away from "locked" at a rate proportionate to that defined by vehicle speed and turn radius. It is locked becasue a spider gear can not drive the worm gear, but the worm gear can drive the spider gear.
Some of you will immediately say, "the drive back forces will overpower the worm gear and electric controled stepper motor!" This woudl be true, if the steering wheel wasnt directing the vehicle in a predetermined path. THe stepper motor never pushes the spider gear, it only ever, agrees with it by spinning, or dissagrees with it by slowing down its spinning or not spinning at all. Wherever the steering wheel points, the vehicle wants to go. Wherever the vehicle wants to go, whatever path it wants to take, there is a mathematical calculaton for how fast each wheel would need to turn. I dont have the mathematical ability to work that out.
If a vehicle were to be instructed by the steering wheel to take a turn, the system would sense the speed of the proppeler shaft ( intended vehicle speed) and the steering wheel angle, and it would spin the electric motor on the differential hosuing at the appropriate rate to ALLOW the differential spider gears to rotate at the rate that they should be allwoed to rotate to achieve that turn at that speed without windup or wheelspin.
As the vehicle comes to a stop, even in the turning state, the stepper motor would gradually also come to a stop.
I am unsure of how to explain my mental thought process, but i am adamant, that the nature of a worm gear driving this, it is impossible for torque to be pushed into the electric motor, so it can be small enough to just fit inside the differential housing.
Ive looked into the financial benefit of something like this and asmy invention releds to a single powerplant, Companies like borgwarner, GKN, Magna Powertrain, JTEKT just to name a few, who are all investing heaviliy in this kind of technology, would probably all be put out of business (jsut the differential business) if this was to be succesfull. And we are talkign about an annual revenue of about 20B usd worth of driveline technologies becoming obsolete.
some pics of all my thoughts in the next post.
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from The ME Hang Out http://bit.ly/2GURAGT https://ift.tt/eA8V8J
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