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It is possible, but practical? I doubt it. It would be hard to run all the piping under the hood as I am sure it will be full of eco friendly stuff.

Jay
 

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Yes, it is possible to put a turbo on a hybrid. Theoretically, it should not affect the hybrid in a too negative way. A turbo will increase some pollution, true, but with more torque coming from the petrol engine, it is possible to charge the battery quicker. Good configuration will be required though.
 

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It would seem that the existing configuration of engine and charging system is pretty refined already by Lexus. Adding more torque doesn't mean that the system can actually use it for better charging rates, and there certainly wouldn't be any impact on physical performance of the car... unless someone comes up with a programmer for it.
 

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Please, please, don't turbo your CT.

I have been running forced induction for years, from a 400 WHP Evo VIII I built up myself to my current 2011 Subaru WRX. I speak with years of experience when I say that it can't be done without literally changing the entire system. The electronic system alone is intimately tied into the hybrid technology. Adding a turbo will not only add torque, but it will completely change the profile of the engine management system. Far, far more goes into changing something into a FI setup and this platform is not designed for it and would not function with it. If this car were not a hybrid with the associated technology, then it would definately be possible to turbo the naturally aspirated, internal combustion engine. Slapping a turbo onto this car will completely bypass the function of the electric engine, rendering it useless.

Besides, unless you use an AccessPort or some type of personalized engine management system, you can easily blow the internals of this seemingly unrated engine. Oh yeah, then you will have to upgrade the transmission, power delivery system, fuel pump, fuel rails, injectors, oil cooling system, and much much more. Lastly, you will have to work out every day to manage the insane torque steer that will accompany your new turbo'd hot hatch. It's just so far beyond practical...
 

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Another aspect to consider is the stock engine essentially runs at a constant speed. The CVT (transmission) performs all the torque conversion and provides the gear ratios to match speed and load.

That's why when the tachometer appears in the display in performance mode it is pretty much meaningless as a direct indication of engine speed.
 

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Another aspect to consider is the stock engine essentially runs at a constant speed. The CVT (transmission) performs all the torque conversion and provides the gear ratios to match speed and load.

That's why when the tachometer appears in the display in performance mode it is pretty much meaningless as a direct indication of engine speed.
can you explain further? the tachometer does not measure transmission in any way, so i'm trying to understand how you can say that the ct200h's sport mode tachometer is meaningless. it is following the rpm of the crankshaft, thus it is measuring the speed of the motor. it's not meaningless, the rpm's just rise steadily due to the cvt.
 

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Hello
I am new in this forum and I am a Lexus technician in Portugal. Concerning this question about a turbo in a hybrid vehicle, its not possible for many reasons. Speaking in Toyota/Lexus hybrid technology, this system has two "Motor Generators", called MG1 and MG2, which are located inside the gearbox. The MG1 is directly connected to the combustion engine, and is predetermined to receive a specifically amount of torque from the combustion engine in various situations of load. The MG1 works with electromagnetic force, if you increase torque in the combustion engine, the MG1 will not have electromagnetic force enough to "absorb" the power increase from the engine. The vehicle will enter in Safe Mode if the limits of the Hybrid system are overloaded. To put a turbo need to change the operating voltage of the MG's and its power too, and the hybrid battery need more voltage, in the CT200h case, works with 201,6v of nominal voltage with a boost for 650v. Only Lexus can do this.
 

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Get a 305hp subaru wrx hatchback if you want the power. Goes for about same price as fully loaded CT
 

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MG1 is definitely NOT directly connected to the combustion engine. The internal combustion engine can spin-up the MG1 motor via the planetary gear set (or power split device) but its definitely NOT a direct connection. If a force is placed on MG1 to 'hold' itself, the combustion engine can spin freely.

I believe there will be a supercharged CT200h at the NY Autoshow. It is possible.........but difficult. I would also be curious to know the increased in-efficiency of the boost level due to the atkinson cycle of the 2ZR-FXE engine.
 

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Yes, I know that is not a direct-to-direct connection. What I mean is, that the input shaft-(planetary carrier) of the P410 gearbox is connected to the engine and the Sun gear is connected to MG1. I am curious about the increase in HP and torque with the compressor, but they only speak about it and the bodykit. They don't refer to engine management and hybrid management. The 2ZR-FXE has a compression ratio of 13.0:1. Depending on boost pressure and air volume, without modifying ignition timing and injection timing, it will probably cause self-detonation in the engine even with the MAF sensor detecting more airflow. This engine already has a MAP sensor but its for EGR control. Its a difficult job, but who knows...
 

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there are tuners that have turbo'd the honda CRZ so I'm sure it's possible. Why would you want to buy a hybrid if you plan on doing so?

I don't know if this is the stock motor though, could've been swapped.
 

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You may put a turbo on any combustion engine - hybrid or not. But - in the CT200H its a bad idea. The petrol engine in the CT runs an Atkinson cycle. Its set up to waste much of the air drawn into the cylinder, to simulate a expansion volume larger than the inlet volume. This gives a more efficient engine - but with less horspower. This also means that the exhaust gases don't have the same amount of energy as in a traditional Otto engine - more of the energy was uset in the work cycle. So, a turbo will not have the sufficient exhaust pressure. If it did - this would help on HP but kill the emission and MPG numbers.

You may work out a suitable supercharger. This will help aspiration, but again; -kill the emission and MPG numbers.
 
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