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Old 04-07-2016, 01:43 PM   #31 (permalink)
It's all about Diesel
 
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Quote:
Originally Posted by serialk11r View Post
Belt drive is IMO still useful, but in the future it will be just for A/C (electric A/C requires a huge amount of power which is difficult to supply), and the alternator, which hopefully will have evolved into a motor-generator unit.
The A/C might eventually become gear-driven with the power supplied by the flywheel-integrated electric motor in a full-hybrid. In a slightly longer term, only mild-hybrids are going to retain accessory belt drive.

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Old 10-25-2016, 06:34 AM   #32 (permalink)
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F1 cars are hybrids and it has become a fuel economy competition. They use a motor/ generator on the crank and another on the turbo that can alternately harvest energy from the exhaust and act as the variation to control boost pressure. Or provide supercharging boost until the exhaust flow comes back up during first acceleration.
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https://youtu.be/HDtMehBCpl4
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Old 10-25-2016, 01:55 PM   #33 (permalink)
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The next video was Mercedes Benz's effort

https://youtu.be/zQsOgYzl7Q0

They put the motor-generator right on the turbo; while Renault have a driveshaft separating them. I think the Renault design's MGR will live longer.
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Old 10-25-2016, 02:44 PM   #34 (permalink)
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This is really good technology for hybrid passenger cars eventually.
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Old 10-26-2016, 04:39 AM   #35 (permalink)
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BMW is supposed to release one of these (electric-assist turbo) soon actually. In a few years you may be able to buy one from the junkyard and retro-fit the electronics to work with any car.

The only way this would make any economical sense today is if you have very good fabrication skills and a lot of time. Attaching a generator to a junkyard turbo is not too bad if you can make a bracket, you'd need to fit it to your exhaust which is also not too bad, then you'd want to rectify and smooth the generator output and send it through a DC-DC converter that's commercially available. Parts cost could be pretty low but it would take a ton of time.
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Old 10-26-2016, 12:34 PM   #36 (permalink)
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Electric Turbo, 48V Electrics Onboard New Audi SQ7 | Engines content from WardsAuto
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The latest addition to the Q7 lineup is the first series production vehicle to receive an electric turbocharger to boost the power of its engine, in this case a new 429-hp 4.0L V-8 diesel that also is destined for the fourth-generation A8 sedan and a new top-of-the-line Q8 CUV, both under intensive development here.
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Old 10-26-2016, 01:18 PM   #37 (permalink)
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An electric supercharger is a step forward but not quite half as cool as an electric/ exhaust turbo which also harvests electrical power.
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Old 12-07-2016, 02:59 PM   #38 (permalink)
It's all about Diesel
 
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In the '80s, while developing a turbodiesel 1.6L ceramic engine, Isuzu fitted it with some sort of exhaust-driven "regeneration" system that could harvest about 11 to 14hp with a small generator integrated to its turbocharger.
https://www.allcarindex.com/auto-car...-Ceramic-Aska/
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Old 12-07-2016, 08:24 PM   #39 (permalink)
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BMW showed an electric turbo a few years back. It was one of three (turbos). It harvested energy in one direction and compensated turbo lag on the two big ones the other way.
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Old 12-08-2016, 12:03 AM   #40 (permalink)
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Spindy but doable on oure scale

Saw the early post and remembered to call Turbonetics.
Verified I my hypothesis that we can regulate shaft speed to a specific max rpm 30,000 was an achievable goal, with a waste gate or vgt.type turbo-charger ,teck support realized what I was asking when I referenced the BMW and Mercedes F1 Split Turbo power generation units unfortunately Turbonetics dusen't offer any 1st of 2nd gen cummins parts anymore use to have manifold to exhaust tip. He referred me to his friend at HTturbo.com. I'll call them soon.
I still think that a NA or compound setup would be wise for prototyping

2028 Extreme 800Kv Brushless Motor
This 10hp RC motor is rated at 12s (series x4.2v =50.4v x 800kv = 40,320 rpm and a max rpm 45,000.
10hp burst( 60sec)how long do you expect to be wide open this seems long enough.
with the standard 50% derate for continues is a potential of 3kw of recovered electricity .
Dreem big chisel down to reality
Chiping away
Ps Roster the link is not working says under construction.

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