Nitrous Injection

Comments:
If you need more power, you bought the wrong car. No kits exist.
This gentleman both supercharged and turbocharged his Prius
AutoSpeed - Technokill: Building a Blown Hybrid, Part 1
AutoSpeed - The Story of Turbo'ing a Hybrid Prius, Part 1
(both are 5 part articles, he fabricates everything)

This is the same engine in an Otto Cycle, it makes 132 -134 HP, so the Prius engine should not be overstressed at 130 HP
Toyota ZR engine - Wikipedia, the free encyclopedia

The land speed record Prius substituted the Otto cycle engine for the Atkinson cycle engine.
Got Hybrid? - Sport - Car and Driver

That is all I have on those who have gone before you.

 

There are cosmetic 'performance kits' K&N filters, shorty intake pipes, fart cans, 'power chips'; but no kits to actually make the car more powerful: Superchargers, Turbochargers, Nitrous, etc.

For more than "it is chrome and louder" you are on your own.

My personal fetish would be a second MG1 sized motor running a Supercharger at 201 v DC. It should deplete the HV Battery in a 1/4 mile run, but be fast. (The DC motor running the HVAC compressor is about 1/3 the size I want) In this article, look at the AMR500 AutoSpeed - Supercharger Steal - Part One
Looks like you can buy one here Turbos & Superchargers

The Otto cycle variant of the 1.8l in the Prius makes over 130 HP (98 kW) so that should be a safe limit for the Prius engine.

 

Drop in the Otto cycle engine, should be cheaper than trying to convert the Atkinson cycle to Otto.

2010 Toyota Corolla Base 1.8L in Complete Engines | eBay

(I make no claim you could pass your state's emission laws, I have heard no rumors of a street legal conversion)

 

With any stock power train it's a risk. With this car a definite risk, I'd say. You're in relatively uncharted territory.
Have you tried using the existing engine to its fullest extent? Press the PWR button to get the most aggressive accelerator mapping.

 

The way i look at it is if you have the money to spend on a Prius and all the mods needed to supercharge and inject nitrous you should just go by a Telsa Model S. Best of both worlds and you are supporting an AMERICAN company.. again, if you can afford it.

 

You wouldn't need to mod it.. its already awesome!

 

"Tolerance" has a very specific meaning when it comes to things of a mechanical nature.

Also, it isn't a CVT. The HSD/PSD is a planetary gearset with an ICE and a motor (MG1) on each of the two inputs, and another motor (MG2) directly/permanently coupled to the output (even though it's more correct to think of a planetary gearset as having three power paths through which power can flow in/out of any... in this case one path goes to the wheels, which in the context of actively propelling an automobile forward... is always the output.)

Understand that and you'll see that unless you can also increase the torque of the other input (MG1), at a high enough normal force at the output... the greatly-increased power from a juiced-up ICE isn't going to end up at the wheels. Three power paths, remember? You'll just overwhelm the MG1 to destruction.

The design of the HSD is about balance. A more-powerful HSD can be made... by an entity that is able to engineer an entirely higher-capacity system, and tune the control software to deal with the quirks and limits (i.e. overspeed limits on the bigger/heavier motor/generators). But trying to juice up one part of it using the traditional ICE one-input-one-output paradigm... is just a terribly bad idea.

 

As a example of the truth of DtEW's post, read the articles by the guy who both super and turbo charged his Prius. You will find that he was surprised by the fact that when he made more power, the engine used it making the battery pack last longer, not just go faster. In a Prius your engine is not directly connected to the wheels, to 'push' against the wheels it needs to 'push' against at least one Motor/Generator as well. If in some fantasy, your engine suddenly made 234 HP, you better have upgraded the M/Gs as well.

 

I think it would be better to take the engine, inverter, and entire HSD system out of a Lexus RX450h and mod it to fit and work in the Prius. It is essentially what you want. Bigger engine, bigger MG's, higher output battery pack, and in the end faster. Or maybe closer to the GS hybrid line.

Toyota already does the "hybrids don't have to be slow and boring but can be fast and crazy" with the Lexus brand. That's their whole marketing edge, so why re-invent the wheel? A Prius with a giant engine and no hood would definitely be a head turner. I am skeptical it would all fit under the bonnet without modifying the exterior appearance or having it hood-less.

 

lol @ all the abbreviations ... HSD... MG's.. ICE... PSD.. CVT... ABC... DEF... GHI... LOL!!

 

OP is just as stubborn as NRGsaver.

 

SCH-I535

 

It's kind of hard to add further thoughts when you don't seem to be absorbing, or at least addressing, the ones that have already been shared.

"It's gonna work great! It's awesome that you were the first one to think of this, and it's a measure of your badass-ness that you're the first person to go through with it! You obviously knew something nobody else did! You're gonna blow their doors off, make their heads spin and make them wish they had a Prius just like you!"

Is that better?