Patent ID: 9695716
Date: 2017-07-04
CPC Classifications: F01L

Claim:
1. A variable cam timing phaser for an internal combustion engine including a housing assembly with an outer circumference for accepting drive force and a rotor assembly having at least one vane, the rotor assembly being coaxially located within the housing for connection to a camshaft, wherein the housing assembly and the rotor assembly define at least vane chamber separated by a vane into an opposing first chamber and second chamber, the vane within the vane chamber acting to shift relative angular position of the housing assembly and the rotor assembly when fluid is supplied to the first chamber or the second chamber, the phaser comprising: a control valve for directing fluid from a fluid input to and from the first chamber and second chamber through a first chamber line, a second chamber line, a supply line coupled to the fluid input, and at least one exhaust passage connected to sump, the control valve comprising: the control valve being movable between positions wherein the phaser operates in a plurality of modes under control of the control valve, the modes comprising: