Patent Number: 6,332,438

Title: Vane-type variable valve timing control apparatus and control method

Abstract: A vane-type variable valve timing control apparatus, wherein in a feedback control for bringing a rotation phase between a crank shaft and a cam shaft into agreement with a target value, a feedback gain is changed over according to a target rotation phase and a direction in which the rotation phase is changed.

Inventors: Machida; Kenichi (Atsugi, JP)

Assignee: Unisia Jecs Corporation

International Classification: F01L 1/344 (20060101); F01L 001/34 ()

Expiration Date: 12/25/2018