Control mechanism for cam phaser

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing

Reexamination Certificate

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C123S090150, C123S090310

Reexamination Certificate

active

11459123

ABSTRACT:
A VCT phaser having a mechanical feedback in which no elaborate sensors and its concomitant electronic control loop is required. The phaser has center mounted spool valve controlling the flow of control fluid such that when a command positions the same at a predetermined position, passages within the phaser adjusts to a desired position through the mechanical feedback.

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