Patent ID: 8215274

Claim:
A hydraulic control system to supply fluid to a variable cam phasing system in an engine, the hydraulic control system comprising: a valve housing attached to the front cover assembly of said engine; a first valve installed in said housing; wherein said valve housing defines an inlet passage hydraulically communicating with said first valve to carry pressurized fluid to said first valve; wherein said first valve is a solenoid valve movable to control flow of said pressurized fluid; wherein said front cover assembly further defines a first and a second outlet passage hydraulically communicating with said first valve and with said cam phasing system; a generally tubular insert having a first groove and attachable to said front cover assembly; a fluid distribution device placed within said insert, said fluid distribution device having a first and a second longitudinal hole formed therewithin; wherein said first longitudinal hole in said fluid distribution device fluidly connects said first outlet passage to said cam phasing system; wherein said first groove in said insert and said second longitudinal hole in said fluid distribution device fluidly connect said second outlet passage to said cam phasing system wherein said cam phasing system includes: a front vane plate integrally formed with a plurality of exhaust vanes; a rear vane plate integrally formed with a plurality of intake vanes; a middle housing having a plurality of cavities that engage with said intake and said exhaust vanes; wherein each of said intake and said exhaust vanes has a first and a second side; and wherein said intake and said exhaust vanes are rotatable in a clockwise and a counter-clockwise direction with respect to said middle housing through fluid pressure exerted on said first and said second sides, respectively, of said intake and said exhaust vanes.