Abstract: A blade-type chain tensioner (10, 110) is provided including a shoe (30, 130) adapted to impart tension to a chain (16), a blade spring (28, 128) engaging the shoe (30, 130), a piezoelectric strain element (35, 135) coupled to the blade spring (28, 128) or the shoe (30, 130), and a circuit (34, 137) adapted to receive a voltage or voltage data signal generated by a sensor (33, 133) coupled to the blade spring and shoe assembly (28/30, 128/130) in response to a vibration having a predetermined frequency or frequency band occurring in the blade spring and shoe assembly (28/30, 128/130), wherein the circuit (34, 137) is adapted to operably interact with the piezoelectric strain actuator element (35, 135) to induce a vibratory moment therein effective to reduce the vibration of the chain tensioner (10, 110).