Schnuerle Porting - Loop Scavenging

Loop Scavenging

As Schnuerle porting encourages flow in a loop, it is termed "loop scavenging".

Historically, the deflector piston form of cross scavenging was termed "loop scavenging", after the supposed shape of the flow. Schnuerle flow was termed "reverse loop scavenging". As the first of these was realised to be inaccurate, the later form adopted the simpler name. These original terms are now obsolete and no longer used.