Apparatus for controlling secondary air for cleaning exhaust gases

An apparatus for controlling secondary air for cleaning exhaust gases of an engine, comprising:

• said engine including a carburetor and a throttle valve;
• an air pump operably connected to and driven by said engine;
• a secondary air control valve provided with a valve body;
• a rotor member (60) rotatably carried in said body and partitioning said body into first and second main chambers;
• said control valve including a first path for feeding air to said first chamber;
• said control valve including a second path for feeding air to the suction side of said air pump driven by said engine from said first chamber;
• said control valve including a third path making said second chamber and the delivery side of said air pump communicate with each other;
• said control valve including a fourth path making said second chamber and the exhaust path of said engine communicate with each other;
• and
• said control valve including a fifth path making said first and second chambers communicate with each other at a predetermined angle of rotation of said rotor member, said rotor member of said valve being a rotating operating cam formed to be rotated and operated by the operation of said throttle valve of said carburetor of said engine.