Electric motor-driven impeller-type air pump

Details Electric motor-driven impeller-type air pump Electric motor-driven impeller-type air pump

F - Mech Eng,Light,Heat,Weapons

01

N

172/18

F01N 3/00 (2006.01) F04D 25/08 (2006.01) F04D 29/66 (2006.01)

Patent

CA 2002717

A high speed electric motor drives an impeller to centrifugally induce air flow to an engine exhaust system. The motor is sealed within a noise attenuating cover, and the impeller induces a portion of the air flow to recirculate through the sealed motor chamber to cool the motor. A noise attenuating duct is mounted on the pump inlet. The duct includes an elongated neck of rectangular cross-section extending at an angle from a tubular body, the remote end of said neck being tapered, each side of the neck having a series of parallel inlet louvers, and the body having an internal foam liner.

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