Patent ID: 9157340
Filing Date: 2015-10-13
Classification: F01L

Abstract:
1. A plunger assembly for a dual feed hydraulic lash adjuster comprising: a lower plunger element adapted to be slidingly disposed in a body of the dual feed hydraulic lash adjuster; an upper plunger element adapted to be slidingly disposed in the body of the dual feed hydraulic lash adjuster and having an end adapted to cooperate with a valve actuating mechanism, said upper plunger element cooperating with said lower plunger element to form a low-pressure chamber; said upper plunger element having a first aperture fluidly communicating with said low-pressure chamber, a passageway fluidly communicating with said low-pressure chamber and said end, and a second aperture fluidly communicating with said passageway; and a separate fluid pressure separator disposed in said upper plunger element between said first aperture and said second aperture to prevent passage of hydraulic fluid between said low-pressure chamber and said passageway, wherein said fluid pressure separator has a dome portion and a flange portion extending outwardly from said dome portion, and wherein a passage is provided through said dome portion to provide for evacuation of air from the lash adjuster.