Blower for an internal combustion engine's exhaust gas turboblower has a blower casing and a blower wheel fitted inside the blower casing

摘要

A blower casing (10) has a first gas-control channel (20) with its first flow opening (20a) upstream to an inlet (14) for a blower wheel and its second flow opening (20b) downstream to the inlet for the blower wheel. The blower casing has a second gas-control channel (20') for reducing a pumping limit on a blower. The second gas-control channel has a first flow opening (20'a) upstream to the inlet for the blower wheel.