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Old 11-30-2022, 10:09 PM   #1 (permalink)
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Cool Turbocharged Hybrids

Why are there no turbocharged hybrids? When Toyota, for example, wants to build a more powerful hybrid, they go with a larger NA motor such as in the GS450h or the LS600h L which have a v6 and v8 respectively. Why couldn't they use a a turbocharged 2ar-fe, for example and use it with their eCVT, hybrid battery, etcetera? Would it interfere with the Atkinson cycle?

Second question, could I turbocharge a hybrid aftermarket for more power and still better efficiency than a non-hybrid with equivalent power (adjusted for the weight difference between a hybrid and non-hybrid)? A Prius just doesn't cut it for me. I have the need for speed, but I wanna be fuel efficient too.

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Old 11-30-2022, 11:13 PM   #2 (permalink)
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Mostly itís because of cost but it also does little to improve efficiency

https://www.quora.com/Why-don-t-most...igh-way-speeds

Itís similar to why there arenít diesel PHEVs
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Old 11-30-2022, 11:24 PM   #3 (permalink)
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The 2023 Prius is going to have quite a bit more power than before from what I understand. (It also may require 93 octane to get that power).

You can turbo charge an old Prius as it has been done before. IIRC the only problem is it starts to overcharge the HV battery. My thought would be to develop some sort of electric supercharger instead or in conjunction with the turbo. That way you're both making extra electricity and using it. Also with a supercharger you'd technically have a Miller-cycle engine on a Prius.

There are companies that make 48V electric superchargers. If you have the knowhow, you could rewind, I mean take the windings out and put new windings in, and increase the voltage they can handle. Basically you need thinner wire and more turns (less amps more volts). 48V compared to a 200V (ish) battery would be about 5 times the amount of windings if I'm not mistaken.

If you have the money, a new Chevy Bolt might be what you're after efficiency and powerwise.
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Old 11-30-2022, 11:50 PM   #4 (permalink)
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Coincidentally after posting I learned about the 2023 Toyota Crown in Platinum trim. It uses a turbocharged 2.4l inline 4 with two driving electric motors on the front and rear axle and probably another motor/alternator attached to a 6 speed automatic. It's rated at 264hp and 332lb-ft between 2-3000 rpm. It has 340hp combined and the EPA ratings are 29 city/32 highway, which is impressive considering you're making v8 power and torque and also since this is a full size sedan with a plush interior. I wonder if they combined the turbo with the Atkinson cycle or not.

I'd love to take one of these more powerful hybrid systems and transplant them into a sports coupe or smaller muscle car and employ ecomodding techniques for better performance when I want it and better fuel economy for the other 90% of the time on my boring commute. I like the idea of using a rear transaxle like in an MR2 Spyder since transaxles are more efficient than driveshaft layouts, but an MR2 wouldn't have enough space for a larger hybrid system or even a smaller one. I'd definitely take the 2023 Crown if I had $60,000 to throw at a car, but even if I did, there's so much more fulfillment in building something yourself.
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Old 12-01-2022, 12:57 AM   #5 (permalink)
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There's a few. Acura NSX Type S has 570 HP and a twin turbo v6.

https://www.evpulse.com/features/how...cura-nsx-works
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Old 12-01-2022, 01:43 AM   #6 (permalink)
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Quote:
Originally Posted by rmay635703 View Post
Itís similar to why there arenít diesel PHEVs
There is at least one:Audi Q7 e-Tron Quattro with a 3.0 TDI
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[Old] Piwoslaw's Peugeot 307sw modding thread
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Old 12-01-2022, 01:49 AM   #7 (permalink)
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Quote:
Originally Posted by Piwoslaw View Post
There is at least one:Audi Q7 e-Tron Quattro with a 3.0 TDI
A naturally aspirated diesel is only about 10% more expensive than a gas engine and requires less complex emissions equipment than a TDI

Unfortunate an underpowered naturally aspirated diesel PHEV isnít on the market.
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Old 12-01-2022, 08:17 AM   #8 (permalink)
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VW sold the Jetta hybrid with a 1.4 turbo in the US for a few years.
I think a naturally aspirated Diesel would be too slow for most people. Once the batteryís empty youíd be stuck with a very sluggish engine. BMW tried the tiny engined series hybrid with the I3 Rex and got a class action lawsuit because people didnít want to be stuck doing 50mph on a hill after the battery ran out.
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Old 12-01-2022, 10:03 AM   #9 (permalink)
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In the naturally aspirated 1.6L Golf diesel I used to own was the only car I've gotten pulled over for going too slow... and I had the pedal to the metal and the engine reved up as high as I could get it to go. But it was barely going 25mph in a 55mph zone up a hill. That's all it could do, big plumes of black smoke and all.

Man! I miss that car!
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Old 12-01-2022, 12:47 PM   #10 (permalink)
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Diesels should just never be NA. Turbocharging them is simple compared to a gasoline engine. Just seems a no-brainer to me.

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