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I tell my project team I am on the job to give everyone else someone to blame.
In every significant project, there comes a time when you need to shoot the engineer and finish the work.I tell my project team I am on the job to give everyone else someone to blame.
Yeah I've tried to sort out how inertia would play into this. For the momentary period when the driver's foot is off the "gas" we are drawing minimally from the battery so wheel-generated power added back to the battery might be a net positive.I suppose it depends on how we describe the cases for comparison. Capturing energy from inertia during each stop-start cycle would certainly be better than not capturing energy from inertia during each stop-start cycle, so for stop-start city driving I can see how one would argue the range is extended. But I would expect steady-speed highway driving to have a longer range than either of these stop-start cases, and that range to be impeded by continual recharging from wheel-generated incremental power.
What you describe is why the brakes last longer on most vehicles that travel large distances on highways (like out here in the Dakotas) and you might not use your brakes at all for fifty miles (not much traffic, either). In town, though, braking is almost as frequent as acceleration, what with traffic, stoplights, and such, so it might make a difference there if the braking included using the momentum of the vehicle to generate electricity.
Electric regenerative braking, ie a generator tied to the wheel, is taking momentum, ie kinetic energy, and converting it into electric energy.
But it takes energy, it slows the vehicle down. You have to add more energy into the motor to keep at the same speed, like driving with the brakes on.
It is the electric motor, functioning as a generator, not a separate generator.It is only utilized for braking, not while keeping a steady speed. It is taking otherwise wasted kinetic energy, slowing the vehicle in the process, and using it to recharge the battery.
Yes sir, I agree completely. I was referring the previous conversation of trailer mounted and how this demonstrated the principle.
What confused me then is only halfway thru your comment did you mention "trailer". So I took that as a separate example.
I probably wouldn't be an engineer if I could communicate effectively. Absolutely adore using drawings to communicate. I frequently leave out words that would have help describe...I really try to reread and understand what I left out, but the voices in my head just fill in the blanks automatically...
I always do what the voices in my head tell me to.
How do you hide that many bodies?
Castles have catacombs.
Rednecks have backhoes.
@thackney I joined the discussion to suggest a doable plan for people with electric cars to drive long distances. I had no idea it was going to dissolve into a discussion about how many kilowatts could dance on the head of a pin,and how many that WERE dancing were break dancing,and how many were square dancing.
@thackney I joined the discussion to suggest a doable plan for people with electric cars to drive long distances. I had no idea it was going to dissolve into a discussion about how many kilowatts could dance on the heaThe idea in MY alleged mind was to develop a practical plan to GET THERE and GET BACK,and all I got was "it ain't gonna work because it ain't cutting edge."
What type of square dancing? Traditional, contemporary Western, Irish, or Scottish?An engineer's job should never involve the phrase 'it ain't gonna work'. An engineer's job is to find a way to make it work.
An engineer's job should never involve the phrase 'it ain't gonna work'. An engineer's job is to find a way to make it work.
