.~.~> Lengthwise scavenging of cylinders from cylinder head to piston
Unofficial Alpha Subclasses: R V
DEFINITION
Classification: 123/61
Internal-combustion engines working on a two-stroke cycle and in which successive burned charges act upon opposite sides of a single piston reciprocating in a single cylinder, whereby the working piston is impelled alternately in each direction. Includes two-cycle engines operating upon recompression and also two-cycle engines operating upon pump-compression cycles, both of which terms are more fully explained hereinafter. The working cylinder in the engines in this subclass is of simple cylindrical form, and the supply-pump for the combustible mixture is wholly separate and distinct from the working cylinder and is not considered in this definition.
