Translations:Thermodynamic and Mechanical Study/435/en

From dada-engine.org

The two transfer phases are intended to be quasi-isobaric: one cylinder empties while the other fills, and the pressure variation is intended to remain small compared with the pressure change during compression and expansion. Compression and expansion may involve simultaneous motion of both pistons in the same volumetric direction, so both cylinders may contribute to the pressure-changing phase.