Method of changing the duty cycle frequency of a PWM...

Details Method of changing the duty cycle frequency of a PWM... Method of changing the duty cycle frequency of a PWM...

2007-05-08

2007-05-08

Charles, Marcus (Department: 3682)

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

C123S090170, C464S002000, C074S56800M

Reexamination Certificate

active

10701189

ABSTRACT:
A chain drive having a phaser such as a hydraulic vane phaser interposed between a timing chain and a driving or driven shaft is provided. The phaser or the vane are controlled to oscillate more at certain engine speeds to thereby reduce the tensioning force on the chain at the certain engine speeds.

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