~18:1 base/native compression ratio, DFI plus intercooled SuperCharging, linearly modulateable SC. Triple intake ports with the second and third displaced rotationally and having electromagnetically controlled valve close/open capability. Rotational displacement of the 2nd intake port/valve provides for CR of ~15:1, 3rd valve opening limits CR to <10:1.
"Otto" mode, idle and/or simple cruise, no boost and the axillary inlet ports are closed, ~18:1 compression ratio.
Moderate acceleration, engine load, loading and the 2nd intake valve opens resulting in ~12:1 effective CR, no boost, Atkinson cycle.
HARD acceleration, HIGH engine loads/loading, 2nd & 3rd intake ports now open, engine's "base" compression ratio <10:1, Miller cycle.
"Measured"/Metered boost as a function of gas pedal position beyond 50%. Engine "base" effective CR now <10:1, SC boost raises effective CR in a linear fashion.
Positive displacement variable speed SC. SC is driven via a PSD(CVT) summing machine, engine drive as one input, synchronous multiphase AC motor as the second input. Variable frequency inverter drive allows linear control of boost level in depended of engine RPM.