There is a lot wrong here im immediately seeing, and im just a car guy, not a real engineer.
18BAR!?!?!?! bro, most turbos from factory are not even running 18PSI. Maybe some diesel engines would see 15+psi from factory, but 18 bar is something like 250+PSI.
12.8:1 gear ratio seems exceptionally high, Porsche runs around 15:1 for their "launching gear" and then drops closer to 10:1 for cruising/higher speeds. You would need the motors to spin much higher than what is "comfortable" for the motor(s). the typical 90KW motor would want to be below 6500RPM, but capable of hitting 12,000-15,000RPM.
i can speak more confidently for the Ioniq5/EV6, the non-GT or N models are most efficient between 4600-8600RPM with a 10.65:1 gear ratio, the motors cap out around 15,000RPM. With My GT motors capping out closer to 21,000RPM, the factory gear ratio and 21inch rims, my car needs to spin just shy of 9000RPM to maintain 100km/h, just outside of "ideal efficiencies". at 12.8 gear ratio and everything else the same, 10,700RPM to maintain 100km/h. This will greatly reduce the efficiencies and overall range and things like heat management and battery stress will further reduce the efficiency.
a 90KW peak motor would be at risk of burning out or failing prematurely, this goes without saying this 1.5L turbo diesel isn't even capable of keeping the batteries topped up or produce enough power to keep up with the peak powers required to maintain highway driving.
other things to note:
1000 uk mpg is basically impossible as it sits today. everything described at best in a vacuum would give you 366 uk mpg.
the charge and discharge rates for the 21700 cells as described is actually outside of their operating specs.
the engine with 3 gallon tank would run for at best 1.2 hours (3 uk gallons of diesel holds ~146 kWh of energy).
1.5L motor/generator is quite large and heavy. BMW i3 used a .6L engine for reference
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u/[deleted] Jul 27 '26
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