Exhaust gas recirculation valve - has return spring located in exhaust gas channel and coaxially to valve shaft, one end supporting itself and other end is supported on valve plate

摘要

The valve has a return spring (4), to maintain it in its closed basic position. The spring is located in the exhaust gas channel (1). It is arranged coaxially to the valve shaft (7). One end of the return spring supports itself on a wall of the channel, the other end is supported on the valve plate (3). ADVANTAGE - The volume to be evacuated and height of diaphragm pot are reduced. The valve is maintained in closed position, even if the connection between the diaphragm and valve plate is interrupted due to defect.