How are you ? Always with innovating designs of engine !
The last animation you posted remembers me the French Invention of Edouard Bonnefous, called "Moteur Siamois".
Seethis video
and this webpage
This design is able to achieve Miller's cycles.
What about your quite different design about that ? It seems to me that the expansion course is longer than the intake course ? Isnt' it ?
Best regards
