Patent ID: 6085721
Filing Date: 2000-07-11
Classification: F01L

Abstract:
A control assembly for controlling operation of at least one valve of an engine having a plurality of engine operating conditions, said control assembly controlling the operation of the at least one valve during a predetermined engine operating condition of the plurality of engine operating conditions, said control assembly comprising:a housing having a passageway formed therein;a valve actuating assembly located within said passageway for actuating the at least one valve during the predetermined engine operating condition;supply means for supplying hydraulic fluid to said passageway to operate said valve actuating assembly; and,control means for controlling the operation of said valve actuating assembly to permit operation of the at least one valve during the predetermined engine operating condition, wherein said control means comprises a movable assembly located within said passageway, wherein said movable assembly is capable of temporarily cutting off the supply of hydraulic fluid from said supply means to said passageway, and drainage means for selectively draining hydraulic fluid from said passageway during the plurality of engine operating conditions, wherein said drainage means includes at least a first drainage passageway and a second drainage passageway in said housing, wherein said first drainage passageway and said second drainage passageway are in fluid communication with said passageway.