Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1990-03-26
1991-09-17
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 43, 310 51, 310 58, 41742314, H02K 508, H02K 524, H02K 906, F04B 3504
Patent
active
050497707
ABSTRACT:
An electrically operated air pump for supplying air to the exhaust system of an internal combustion engine having a central mounting plate which is integral with the electric motor assembly. The armature shaft of the electric motor drives an impeller within a working chamber defined by an impeller housing and one side of the mounting plate. A silencer housing encloses the motor assembly and contains an air circuit for channeling air to and from the working chamber of the pump. The air circuit contains a solenoid operated air valve for restriction of outlet air, and sound insulation means for external sound reduction. The central mounting plate, impeller, impeller housing, and silencer housing are constructed of a polymeric material which allows complex features to be molded into the part thereby minimizing machining and assembly complexity.
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Brigham Joseph P.
Gaeth Gerald A.
Herlache Russell L.
Sherrill Steven W.
Barr Jr. Karl F.
General Motors Corporation
Haszko Dennis R.
Stephan Steven L.
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