The figure reveals the vacuum clutch mechanism. Such a clutch uses the prevailing vacuum during the engine manifold to work the clutch. The vacuum clutch contains a reservoir, non-return valve, vacuum cylinder with piston, and solenoid valve.  An automated transmission incorporates quite a few clutches. These clutches engage and disengage https://clutchplate60370.glifeblog.com/32057706/a-review-of-clutch-plate