Abstract: A method of noise attenuation for a vehicle comprises generating a noise attenuating sound based on an assumption through speaker 18. (See FIG. 1). A test signal is generated comprising a frequency range of sounds desired to be attenuated for obtaining actual data. The test signal is received by microphone 26 and then filtered by filter 30. The assumption is then assessed based upon the filtered received test signal. The noise attenuating sound 32 is altered based on the assessment.

Abstract: An air induction system comprises an air induction body, a speaker with a first diaphragm disposed about the air induction body, and a second diaphragm spaced from the first diaphragm. A signal is generated from the first diaphragm and transmitted to the second diaphragm. The second diaphragm generates a noise attenuating sound.

Abstract: An air induction system comprises an air induction body, a speaker with a first diaphragm disposed about the air induction body, and a second diaphragm spaced from the first diaphragm. A signal is generated from the first diaphragm and transmitted to the second diaphragm. The second diaphragm generates a noise attenuating sound.

Abstract: A filter assembly comprising: first and second compartments, the first compartment comprising an exit tube, the second compartment comprising an air inlet the exit tube comprises a plurality of radial inwardly extending stand-offs; an air flow sensor for sensing the mass of air exiting the exit tube, including an exit conduit adapted to be received upon and supported by the stand-offs; the exit conduit and exit tube cooperating to form a tuner inlet passage, the air flow sensor further including an entrance conduit, positioned upstream of the exit conduit; an insert comprising tapered walls including first and second ends, the first end defining an opening conformal to a first open end of the first housing member and adapted to be joined therewith, the second end defining a hollow sleeve of substantially the same size as the entrance conduit and adapted to sealingly mate therewith; thereby enclosing, in cooperation with the first compartment a tuner volume communicated with the tuner inlet passage; an air fil

Abstract: A drive system (10) for rotating a plurality of engine mounted accessories comprising an input member (16) supporting a crank unit (12) and a remotely positioned auxiliary drive unit (14). The units include a plurality of output pulleys (22, 30, 90, 98) linked by drive belts (100, 102). The crank unit (12) comprises an axially movable clutch (38) and an electric responsive actuator (50, 66, 68, 72) for moving the clutch between engaged and disengaged conditions, including means for compensating for the wear of the internal components of the drive unit to affect repeatable engagement intervals.