Patent ID: 9051911
Filing Date: 2015-06-09
Classification: F02B,F02N,F16D,F16F

Abstract:
1. A crankshaft isolator assembly comprising: a hub adapted to be fixed for rotation with an engine crankshaft; a crankshaft isolator pulley coupled to the hub and adapted to engage a belt engaged with an accessory drive system; and a mechanical clutch engaged with the hub and the crankshaft isolator pulley and fixing the hub for rotation with the crankshaft isolator pulley during a first operating condition and allowing relative rotation between the hub and the crankshaft isolator pulley during a second operating condition, wherein the crankshaft isolator pulley is rotatable relative to the hub in a first rotational direction until the mechanical clutch fixes the hub for rotation with the crankshaft isolator pulley in first rotational direction, wherein the mechanical clutch allows for at least 5 degrees of rotation of the crankshaft isolator pulley in the first rotational direction relative to the hub before the mechanical clutch fixes the hub for rotation with the crankshaft isolator pulley in first rotational direction.