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Videos (28) | Sift Talk (0) | Blogs (0) | Comments (67) |
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Watch The Tesla Plaid Go 0-160 MPH
For new cars, probably correct, but old combustion engines aren’t just going to dissolve away. I have two over 50 years old in my driveway. They can last a long time.
Also, India and China don’t seem very interested in skipping their turn at combustion engines (sad), so tack 50+- years on before the entire world even really wants to switch over.
I don’t deny average electric vehicles should soon outperform average normal gas engines (let’s ignore exotics as exotics). My point is switching technology across the board is a slow, painful, expensive process that won’t likely happen in 5, 10, or even 20 years IMO….and electric motors won’t ever totally replace combustion for all applications as some suggest.
Yes and no. For private personal transportation in first world countries a decade sounds about right, two decades at most. Unless there is some disruptive event.
The World's First CVVD Engine - Genius!
The first thing that comes to mind is how antiquated this video is going to be when there are no more cylinder engines because we only need electric motors.
In 2035 selling new gas-powered automobiles will no longer be allowed.
Lucas di Grassi on how quickly Formula E has evolved
This is all fine, why not. IMHO Formula 1 is basically approaching this from the other shore most of the time.
Racing cars used to be about adrenalin, taming a beast, surviving unlikely odds and so on, an adventure for gentlemen.
In the last 40 years it has become a competition in pushing buttons, mostly.
If racing cars can have ABS, automatic gearboxes, power steering and all, why not an electric motor?
I still think it is sad and I am glad I saw F1 in the 70s.
Porsche shatters Nurburgring record
As far as I know you are pretty much spot on. The 919 was run in the LMP1 class with 8 megajoules of hybrid power and a turbo 4 cylinder petrol engine.
This evolution of the 919 has increased the power of both systems, by removing the fuel flow restrictions and increasing the output of the electric motors. The boost graphic is probably showing the deployment of the stored power from the lithium batteries, but it wasn't 100% clear to me (usually they will indicate when it is charging or discharging, and this didn't).
I didn't find a really good reference, but there is a bit on wikipedia https://en.wikipedia.org/wiki/Porsche_919_Hybrid
So my limited understanding is that it's a hybrid car (twin turbo 4 cyl and electric motor), and in braking, electrical energy is generated to use as boost coming out of the corner. It helps with power as there may be some turbo lag from the 4 cyl. I however could be completely wrong. Maybe @oritteropo knows for sure.
Porsche shatters Nurburgring record
So my limited understanding is that it's a hybrid car (twin turbo 4 cyl and electric motor), and in braking, electrical energy is generated to use as boost coming out of the corner. It helps with power as there may be some turbo lag from the 4 cyl. I however could be completely wrong. Maybe @oritteropo knows for sure.
Can anyone explain the Boost bar there to me? That didn't look like turbo boost, as it was almost never up, but seemed to fire coming out of a corner.
Cardboard Plane
Wow that guy made the video annoying to watch. It is a shame he hasn't watched other R/C planes, he might learn that those modern electric motors can generate so much thrust that the body wouldnt even be needed. You would have to try very very hard and add a ton of weight to make a battery powered plane that couldn't fly. And when I say fly I mean "dragged along by a horizontal helicopter blade".
The Death and Life of Helicopter Commuting
If you can go to all electric motors, redundant ones at that, you can cut out a ton of the spendy maintenance that forces helicopters to charge thousands per hour of operation. And fuel savings are just icing on the cake.
German Train makes Music
Maybe a variable frequency drive ramping up speed, combined with wheel slip causing the sound? I've never heard an electric motor make a sound like that.
German Train makes Music
That has to be some sort of electrical motor that is making that sound, wouldn't you think?
Cyclist Uses Aerodynamics Over Leg Strength
Impressive but I'd be checking the bike for hidden electric motors
Blower impeller design experiments
Huge huge miscalculation on his part here.
Electric motors all have efficiency curves which show the efficiency (power output to power input) relative to the RPMs of the motor. Without addressing that, the rest of this experiment is meaningless. If he tested it on ten different motors he'd come up with ten completely different results.
What he SHOULD have done was to use a motor that he can fix the RPMs, adjust it to the peak efficiency RPMs for each setup and then measure windflow and power consumption. That would give him some numbers he can use.
Freevalve Camless Engine
They're using port injection, so without the engine turning there's nothing to pull the fuel into the cylinder.
I love all this technology though, I'm a real petrol head but I really do think this is the dying throws of the internal combustion engine. Electric motors just have so many advantages and the disadvantages are disappearing fast.
I've heard camless engines don't need starters. They just squirt a bit of fuel into a combustion-cycle (down stroke) cylinder and fire the plug.
The Bose Suspension In Action
The first thing you need to understand is the suspension doesn't use springs or shock absorbers. The whole thing is linear electric motors on each control arm. (Great huge solenoids) The suspension moves up and down independent of weight or inertia. It works fast enough that it starts to compensate for bumps BEFORE the tires hit the bump.
This system has more in common with a 1965 Impala with hydraulic rams bouncing in a parking lot than a conventional car suspension.
For the most part, it scans the road ahead.
See a dip down? Extend the wheel.
See a bump up? Retract the wheel.
I'm fairly certain the ollie was manually instigated by the driver.
Much like hitting the turbo boost on K.I.T.T. it's just a button and the computer does the jump.
Press button:
Retract the wheels, starting with the front. (to maximize suspension travel)
Push down hard on front, then rear wheels. (Launch car up)
Retract front then rear wheels. (tuck the wheels up)
*car passes over 2x4*
Push down on front, then rear wheels.(ready for touchdown)
*tires hit pavement*
Retract front, then rear, wheels slowly to absorb impact.
I'm very confused by that bit. Was that bunny hop activated by the driver (how?) or autonomous (and again, how)?
Self-driving, drifting DeLorean
Hard to tell. Obviously a new motor, but why swap in a different gas engine? I think at 1:25 it sounds like an electric motor, and at the very end it sounds like it clicks off.
A Google Image search returns a couple similar-looking results but nothing conclusive. Also they don't show a battery, but it might be a small one for small experiments. Maybe even self-contained in that housing, since most GIS results show simple cylindrical motors.
I got you @Baristan...
*promote
Did they turn it into an electric car too? It looked like it in the build, but there is some motor noise at the end of the drift (too much loud music during the drift to hear), so I'm confused.
The Howmet TX: Rethink Everything
According to the entry in Jimbo's big bag'o'trivia, there's a second turbine that drives the wheels (and an electric motor for reverse).
I want to know more about how it works. It seems like they're saying it's direct drive off the turbine (with no clutch? Really!?), but then they are able to stop the wheels with the brakes while the turbine is spun up...so how does that work?
Looks like fun, and an interesting idea.