Patent ID: 8662035

Claim:
An oil control system, comprising: an oil supply gallery; an oil control gallery; an oil control valve disposed in fluid communication between the oil supply gallery and the oil control gallery, the oil control valve having a first position that prevents flow of oil from the oil supply gallery to the oil control gallery and permits flow of oil from the oil control gallery to a downstream drain line, and a second position that permits flow of oil from the oil supply gallery to the oil control gallery and prevents flow of oil from the oil supply gallery to the drain line; and an oil bypass passage disposed in fluid communication between the oil supply gallery and the oil control gallery, and disposed to bypass the oil control valve, the oil bypass passage having a first oil flow constriction region disposed closer to the oil supply gallery than to the oil control gallery, a second oil flow constriction region disposed closer to the oil control gallery than to the oil supply gallery, and an intermediate volume disposed between the first and second oil flow constriction regions.