Valve for secondary air supply system has valve chamber on outlet side of non-return valve divided into two separate chambers directing secondary air out to separate exhaust branches

摘要

The valve has a valve chamber (20) on the outlet side of the non-return valve (30) divided into two separate chambers (21, 22) each connected to separate outlets to direct secondary air out to associated separate exhaust branches (14,15). The switch valve (40) on the outlet side of the non-return valve is between the two chambers and controls an opening (25) between the two chambers so that the opening is closed when the switch valve is closed and is opened when the switch valve is opened. The inlet into the first chamber is controlled by the non-return valve.