Mild Hybrid e-Assist (fuel economy enhancer)

I think simulations are valuable for giving a starting point (sizing things, etc), but every time I run some sort of simulation or calculator I think of the line, "There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy." (that's why my sig is what it is) When I first started this journey, it was a whole lot of, "nobody knows." I've spent a bunch of money zeroing in on those "nobody knows" issues and getting to, "I'm starting to know." I'm here to try to encourage you all to try it!

Let's all blow some $hit up together and learn some things - I feel we genuinely are on the forefront of a revolution - one that works not just for peak power numbers, but also for making ICE cars a lot more efficient than they ever have been. At the end of the day, no amount of simulations (or even real-world) with direct electric drive in a hybrid vehicle will come close to the performance applying that same electrical energy to a forced induction device - the returns are literally manifold greater.

That's my point in this thread - I feel we're getting a bit off topic discussing something neither one of us will ever test. I'm certain of my position and would rather expend my energies developing electric forced induction. But I definitely encourage you to prove me wrong! I'll do my best to encourage you all the way, and help out where I can. A little insight into my psychology - when my parents were getting divorced when I was in my late teens, my dad wrote a letter (to himself, I suppose) - he recently passed away and I just found it - In it, I had the shortest mention. My brother was a pretty significant problem, so the bulk of the letter was devoted to bitching about him. But here's the short paragraph I got, and in a weird way, I'm proud of being this way: "Alexander is a known problem. You just need to show him the facts, and he changes his mind."

Build it and show me. Make a real lap with direct electric assist, then make another driving like Mario andretti without electric assist, then make a third with an electric turbo with the same electrical power as the direct electric assist. I'm pretty damn sure the last one would be by far the fastest; the first one would be the most fuel efficient, and the middle one the simplest. They all have pros.
 
BTW, to extend that last example, put in a smaller, more fuel-efficient engine with a relatively large electric turbo on it, and will it be more fuel efficient and faster than the bigger ICE with direct electric drive assist?

That's the real, relevant to this thread, "nobody knows" question... I'd love to find out.
 
I don't care about peak power numbers, lap times, or 0-60s. I care about not idling at a stop, being able to recoup energy from deceleration, and not having to downshift when climbing a hill on the freeway. An eTurbo can do one of these three things (downshift reduction.)
Mercedes-Benz uses an inline-six ICE with an e-turbo AND a direct assist motor. Best of both worlds. No burning up starters when idle-stopping, super-quick and quiet restarts, and more power than any direct-drive 48-volt motor.
 
It's been a while, and I've figured a couple of things out about this system and I have now a clearer path of development
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Before I throw money at a system that might not work anyway, I really need to get my hands on more realistic simulation tools (the tests I run currently in simulations are literally adding the e-assist's torque curve to an existing engine, with no accounting for belt slippage, battery current, component temperature, or battery state of charge.) After I run simulations to size everything, make sure the motor can restart the engine, and determine how long it could assist, I would need a beta-test platform. This would NEED to be an OBD-II compliant, automatic-transmission, 4-or-6-cylinder beater car.
Why these requirements? First of all, a giant engine (anything bigger than a V6) would be very hard to start-stop. Tons of compression drag, and lots of rotating mass to try to spin back up in a quarter of a second. Plus, a vehicle that gets 9 MPG city would likely see little to no improvement.
I need OBD-II for controlling the whole system, and an automatic would be easier to start-stop, since you don't need a way to know if you're in neutral.
I also wouldn't want to stick a $2500 hybrid drive into a newish vehicle (or even a nice cheap car like an early-2000s Acura) and end up ruining it.
If the beta test works (and gets better MPG) I would add the system to an everyday vehicle in my family. If the beta tester doesn't work, I'll determine what caused it to fail and continue research on making it work.

Alex, you said that I'd "wear out parts quicker" by implementing Start-Stop. There are Toyota Prius with 250,000+ miles on the original engines and they are still extremely reliable, despite being started and stopped probably 300,000 times in their lifetime.
 
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