Method of reducing engine belt noise

Details Method of reducing engine belt noise Method of reducing engine belt noise

2006-02-14

2006-02-14

Schuberg, Darren (Department: 2834)

Electricity: single generator systems

Driving means control

C474S135000, C701S115000, C123S1950AC

Reexamination Certificate

active

06998823

ABSTRACT:
A method is provided for reducing belt-related noise in an engine, wherein the belt is engaged with an alternator pulley connected with an alternator, and a crankshaft pulley connected to an engine crankshaft. The method includes controlling rotor current in the alternator in a manner to selectively synchronize variations in rotor speed with variations in crankshaft speed, thereby preventing large variations in belt tension to reduce noise.

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