Abstract: A transmission housing includes a well, for receiving an electric drive motor, and a shaft hole, for receiving an idler gear shaft. The motor well is surrounded at its open end by a plurality of lugs formed in the housing and having inwardly-facing slots for receiving a motor retainer plate. The plate has a central opening for receiving and accurately positioning the motor. The retainer plate has a pattern of edge notches identical to the arrangement of the lugs but rotationally offset by an appropriate central angle. The plate is inserted axially past the lugs via the notches and then rotated through the central angle to engage the non-notched edge of the plate in the slots, thereby securing and positioning the motor in the well. A flange extending from the plate has a second hole precisely located at a distance from the plate center hole. With the plate rotated into motor-retaining position, the second hole is coaxial with the idler shaft hole.

Abstract: A transmission housing includes a well, for receiving an electric drive motor, and a shaft hole, for receiving an idler gear shaft. The motor well is surrounded at its open end by a plurality of lugs formed in the housing and having inwardly-facing slots for receiving a motor retainer plate. The plate has a central opening for receiving and accurately positioning the motor. The retainer plate has a pattern of edge notches identical to the arrangement of the lugs but rotationally offset by an appropriate central angle. The plate is inserted axially past the lugs via the notches and then rotated through the central angle to engage the non-notched edge of the plate in the slots, thereby securing and positioning the motor in the well. A flange extending from the plate has a second hole precisely located at a distance from the plate center hole. With the plate rotated into motor-retaining position, the second hole is coaxial with the idler shaft hole.

Abstract: A variable capacity modular venturi system for exhaust gas recirculation in a diesel engine having elements readily formed by die casting or injection molding. A throttle body controls the amount of fresh air being admitted directly to the engine intake manifold and variably diverts a portion of the air into exhaust gas mixing elements of the device. A mixing body connected to the throttle body receives the diverted air from the throttle body through an injection cone, receives exhaust gas diverted from the exhaust gas stream, and uses the diverted air stream to aspirate exhaust gas into a mixing chamber via a venturi element disposed concentrically within the mixing body. The mixed gases are combined with the stream of fresh air passing into the engine through a mounting base attachable to the intake manifold of the engine.