公开(公告)号：US06585789B2

公开(公告)日：2003-07-01

申请号：US10044841

申请日：2002-01-11

申请人： Siegfried Dippman ,  Lothar Kroneck ,  Gerd Rathke ,  Wolfgang Strodel

发明人： Siegfried Dippman ,  Lothar Kroneck ,  Gerd Rathke ,  Wolfgang Strodel

IPC分类号： B01D3516

CPC分类号： F02M35/08

摘要： In a dry air filter for internal combustion engines of utility vehicles having an outlet for the dust separated in a preliminary separator stage, compressed air is delivered to the outlet, at least intermittently, and in order to produce an ejector action to keep the outlet and optionally the dust discharge valve closing off the outlet free of dust, is blown in the direction of the dust discharge valve. Preferably, surplus compressed air already to hand from an on-board compressed air generating system is used for this purpose. In order to improve the cleaning action, the compressed air is delivered into the outlet via a nozzle.