NL_Fer wrote: ↑
Sun Sep 22, 2019 4:05 pm
Driving with open wastegates means there is no energy recovery from the mgu-h....
there is (some) energy recovery without any difference in mean pressure across the turbine
because of the kinetic energy of the exhaust pulses
the so-called blowdown action of a turbine
how much ? - well 15000 aircraft engines gained up to 18% 'free' power this way
(ok they had a lower expansion ratio as the CR was only 7:1)
NOTE - (RETRO-EDIT)
what I had in mind was that wastegate-open ...
the mgu-h turbine is mechanically contributing somewhat to driving the compressor
not that the mgu-h was contributing electrically