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Another fine example of an IMPLEMENTATION, not an INVENTION that should not receive any patents whatsoever. Good work, of course, but, if you tasked any capabl

Another fine example of an IMPLEMENTATION, not an INVENTION that should not receive any patents whatsoever. Good work, of course, but, if you tasked any capable team of engineers to build a DC brushless motor as a retrofit into a car wheel this is what you would get. In fact, there are thousands of teams all over the world that could do this inside of six to twelve months with equal results.

lloeki 14y ago
This is probably already patented in some way by Peugeot since that's (almost) how their 'hybrid4' (diesel+electric) work. The engine is not in the wheels but that's really not a stretch to place them there. I would be surprised it they did not try it. [0] http://carscoop.blogspot.com/2010/08/new-peugeot-3008-hybrid4-world-first.html http://carscoop.blogspot.com/2010/08/new-peugeot-3008-hybrid...
- Lagged2Death 14y ago
  Putting the motor in the wheels must produce a hefty increase in rotating mass and in un-sprung mass, both undesirable. It's necessary in the case of a retrofit, but in a from-scratch design I doubt an automotive engineer would try this.
  - lloeki 14y ago
    They do: http://www.youtube.com/watch?v=gnUGvfCkvbk&feature=player_detailpage#t=29s http://www.youtube.com/watch?v=gnUGvfCkvbk&feature=playe... Make the rims part of the engines (or the opposite).
    - Lagged2Death 14y ago
      That video is about a show car, and it says the technology will show up in he 2010 model year. But it didn't happen. Electric cars face big challenges in terms of cost and weight; I expect that a design like this, which increases both, is far, far away. The Tesla cars, which cost a huge amount of money, don't do things this way. The Toyota hybrid system, probably the most developed in the world at the moment, doesn't do things this way. The people who designed those things were smart people.
  - frankus 14y ago
    There's certainly some downside, but the compromise can be worth it for packaging reasons, and there are a few mitigating factors. For one motor torque scales with the square of radius, so a relatively light pancake motor can have quite high torque. You can also downsize the friction brakes thanks to regenerative braking. Finally you can distribute your motors across all the wheels. In exchange you get a drivetrain with one moving part per wheel (yes, leaving aside bearing needles, you pedant!). I don't foresee this making its way into sports cars, but I could see the minivan of the future having a drivetrain like this.
infinitex 14y ago
Invention? In-wheel electric motors have been around for over a century? Using them for electric cars? That is mostly what they were used for. http://en.wikipedia.org/wiki/Wheel_hub_motor http://en.wikipedia.org/wiki/Wheel_hub_motor http://en.ekopedia.org/Wheel_motor http://en.ekopedia.org/Wheel_motor This company is doing something similar: http://www.proteanelectric.com/ http://www.proteanelectric.com/ Let the law suits begin...

lloeki 14y ago

This is probably already patented in some way by Peugeot since that's (almost) how their 'hybrid4' (diesel+electric) work. The engine is not in the wheels but that's really not a stretch to place them there. I would be surprised it they did not try it. [0] http://carscoop.blogspot.com/2010/08/new-peugeot-3008-hybrid4-world-first.html http://carscoop.blogspot.com/2010/08/new-peugeot-3008-hybrid...

Lagged2Death 14y ago
Putting the motor in the wheels must produce a hefty increase in rotating mass and in un-sprung mass, both undesirable. It's necessary in the case of a retrofit, but in a from-scratch design I doubt an automotive engineer would try this.
- lloeki 14y ago
  They do: http://www.youtube.com/watch?v=gnUGvfCkvbk&feature=player_detailpage#t=29s http://www.youtube.com/watch?v=gnUGvfCkvbk&feature=playe... Make the rims part of the engines (or the opposite).
  - Lagged2Death 14y ago
    That video is about a show car, and it says the technology will show up in he 2010 model year. But it didn't happen. Electric cars face big challenges in terms of cost and weight; I expect that a design like this, which increases both, is far, far away. The Tesla cars, which cost a huge amount of money, don't do things this way. The Toyota hybrid system, probably the most developed in the world at the moment, doesn't do things this way. The people who designed those things were smart people.
- frankus 14y ago
  There's certainly some downside, but the compromise can be worth it for packaging reasons, and there are a few mitigating factors. For one motor torque scales with the square of radius, so a relatively light pancake motor can have quite high torque. You can also downsize the friction brakes thanks to regenerative braking. Finally you can distribute your motors across all the wheels. In exchange you get a drivetrain with one moving part per wheel (yes, leaving aside bearing needles, you pedant!). I don't foresee this making its way into sports cars, but I could see the minivan of the future having a drivetrain like this.

infinitex 14y ago

Invention? In-wheel electric motors have been around for over a century? Using them for electric cars? That is mostly what they were used for. http://en.wikipedia.org/wiki/Wheel_hub_motor http://en.wikipedia.org/wiki/Wheel_hub_motor http://en.ekopedia.org/Wheel_motor http://en.ekopedia.org/Wheel_motor This company is doing something similar: http://www.proteanelectric.com/ http://www.proteanelectric.com/ Let the law suits begin...