Pneumatic pressure regulating valve for automatic regulation of the pressure in a crankcase of an internal combustion engine comprises an adjusting membrane and a membrane part

摘要

Pneumatic pressure regulating valve (1) comprises an adjusting membrane (2) having a recess (24) in the region lying opposite the run-off cross-section (3) and a membrane part (25) surrounding the recess on the side facing away from the run-off cross-section. One end of the membrane part lying away from the recess is fixed to a valve housing (10) or lid (10). Preferred Features: The recess has a flat shape of the free cross-section of the run-off cross-section. The membrane part is formed as one-piece with the remaining adjusting membrane (2). The membrane part comprises a folding bellows.