A two-stroke internal combustion engine having an air control arrangement which controls scavenging air flow during rapid engine acceleration to optimize the acceleration and maximum power output of the engine while maintaining low exhaust emissions from t...

A fuel injection system for a two-stroke small engine (16) has a charge forming device (14) with an injector mixing passage (62) which forms a rich fuel and air mixture supplied to a tuned injector tube (12) connected adjacent one end through a port to the...