roon wrote: ↑26 Aug 2019, 05:48
henry wrote: ↑26 Aug 2019, 00:18
Mercedes admit to a maximum drain of 200kW, with the MGU-K taking 120 that would leave 80 for the MGU-H which would probably not be enough to drive the compressor at the sort of boost levels being run.
Perhaps, although, why would they publish accurate data at this time regarding this system?
henry wrote: ↑26 Aug 2019, 00:18
With turbines open the turbine still delivers power from blow down energy, bringing the compressor power up to the 100 plus kW needed.
I have another pet untested hypothesis that says a MGU-driven-compressor-speed turbine will create too much backpressure to permit exhaust flow through it during WGO.
The Mercedes 200kW figure is unlikely to be “accurate”, but they have a habit of publicising close ballpark figures. In the same source video they show ES efficiency at 95% which works quite nicely with calculations of ES consumption over a race distance.
If your hypothesis is correct and there is sufficient back pressure to prevent flow across the turbine the MGU-H and ES peak power would rise by 10 to 20%. And the e-boost duration would reduce similarly.
Fortune favours the prepared; she has no favourites and takes no sides.
Truth is confirmed by inspection and delay; falsehood by haste and uncertainty : Tacitus