Electric Assisted Turbocharger

[pogba]

I am currently at uni studying Mechanical Engineering. I was wondering what people thought about the idea of introducing an electrical motor or a motor/generator unit ( similar to the system used in the current generation of TC'd F1 cars) at the shaft of a turbocharger for current downsized TC'd petrol driven engines, with the focus on being able to improve the engines transient response with a quicker spool up time.

Would it be possible to introduce such system while still being able to keep the standard 12V battery system, as opposed to switching to a 48V system as some manufacturers are now turning to? I know with a high powered turbo the required power would definitely not be able to run on a 12V system, but if the focus is on a smaller engine (1.0-1.6l) using a small turbo, could this be feasible to use within affordable vehicles?

The work I have currently seen tends to be focused on high powered diesel engines (SQ7) and on high end vehicles (Bentayga), but I cannot find much work revolving around smaller engines. I would like to find out if I am wasting my time, and should maybe focus on bringing such system to slightly larger engines.

Thanks

Edited by pogba on Tuesday 12th April 17:59

[pogba]

Thanks for your reply!

Could you give me some help with 2.) please, I am struggling to figure out how to calculate an approximation for the power a turbo would consume.

As I want to focus on small downsized engines, I will use a max value similar to a ford ecoboost turbo - 250,000 rpm....I know power is dependent on torque and rpm, then I am stuck...

Should I be looking at the power consumed by the turbo in terms of power a turbine will extract from exhaust gasses? or is that over complicating it and I should be looking at how much power is required to simply spin a turbine ?

If it is the latter, could you possibly throw some common turbo turbine dimensions/weights at me in regards to a similar one used in the ford 1.0l ecoboost?
So find the torque first, then find the power value in hp using- rpm*T/5252, then convert this into kW, right?



I realise this is probably really simple, so I apologise for my dopiness

Edited by pogba on Thursday 14th April 03:17

Edited by pogba on Thursday 14th April 04:47

[pogba]

Hi, using values similar to those of the ecoboost turbo, I got a value of 6.7kw as the power required to compress air. Does that figure seem fine to you?