A camshaft phaser includes for an internal combustion engine includes a stator, a rotor rotatable with respect to the stator, a locking cover non-rotatably fixed to the stator and a locking assembly including a locking part configured for engaging with the locking cover to selectively lock the rotor with respect to the stator. The locking part is configured for being movable via hydraulic fluid in a hole in the rotor. The locking part or a surface of the hole including a groove configured for receiving contaminant particles in the hydraulic fluid.

A particle separating system for supplying a cam shaft phase adjuster with cleaned lubricating oil. The phase adjuster includes a stator, a rotor connectable to a cam shaft, and a control valve for hydraulically adjusting the rotational angular position of the rotor relative to the stator. The particle separating system includes an oil separator arranged in the flow of the lubricating oil, upstream of an oil gallery of an engine supplied with the lubricating oil, exhibiting a separation efficiency of at least 50% for particles having a size P1 and a separation efficiency of at least 90% at a size P2>P1; a particle separator arranged downstream of the oil separator and upstream of the phase adjuster or control valve, to clean the lubricating oil for the phase adjuster. The particle separator exhibits a separation efficiency of 50% at a size P3, where P1<P3<100 m.

A camshaft phaser includes an input member and an output member. A valve spool is moveable along an axis between an advance position and a retard position and includes a valve spool bore. A check valve within the valve spool bore includes a check valve member which moves between a seated position and an unseated position such that the check valve member prevents fluid flow out of the valve spool bore through a passage and such that the check valve member permits flow into the valve spool bore through the passage. An insert within the valve spool bore supports the check valve closes one end of the valve spool bore and abuts an insert retainer to retain the insert within the valve spool bore. A spring urges the insert toward the insert retainer and holds the insert retainer in compression against the insert retainer.

An electromagnet for a hydraulic system, such as an automatic transmission of a motor vehicle. The electromagnet may include an armature chamber filled with hydraulic medium, which may be fluidically connected to hydraulic lines of the hydraulic system, and may have an armature mounted therein. The armature may have an adjustable stroke and may include a shut-off body. The armature may divide the armature chamber into an opening-side chamber facing the flow opening, and an inner chamber facing away from it. During a stroke movement of the armature, an oil exchange may occur, during which a displacement volume of the hydraulic medium overflows from the opening-side chamber into the inner chamber. The electromagnet may further include a hydraulic medium reservoir, which may store a hydraulic medium having a higher degree of purity than the hydraulic medium in the hydraulic lines and which may be fluidically connected to the opening-side chamber.

A camshaft phaser includes an input member connectable to the crankshaft of an engine; an output member connectable to a camshaft of the engine and defining an advance chamber and a retard chamber with the input member. A valve spool is moveable between an advance position and a retard position and includes a valve spool bore extending thereinto. An insert within the valve spool bore and carries a check valve. The check valve includes a check valve member which moves between a seated position and an unseated position. The check valve also includes a check valve positioning member which is held in compression against an inner periphery of the valve spool bore such that compression of the check valve positioning member holds the check valve in contact with the insert.

A phaser including a housing assembly having an outer circumference for accepting a drive force; a rotor assembly received by the housing assembly defining a chamber separated into an advance chamber and second chamber by a vane; a control valve in fluid communication with the advance chamber and the retard chamber, a source of fluid, and a sump through at least one exhaust line connected to at least one exhaust port; and at least one check valve in the at least one exhaust line between the control valve and the sump. The at least one check valve prevents air from the sump connected to the at least one exhaust port from being sucked into the variable cam timing phaser through the at least one exhaust port during a torque reversal of a camshaft the variable cam timing phaser is mounted to.

A valve opening/closing timing control device that sets a relative rotation phase between a driving-side rotating body and a driven-side rotating body using a driving force of an electric actuator is compactly configured. The device is provided with: a first bearing disposed between an inner periphery of the driven-side rotating body and an eccentric member; a second bearing disposed between the eccentric member and an input gear on a side of the first bearing away from a camshaft in a direction along a rotational axis; and a front plate fixed to the driving-side rotating body on a side of the second bearing away from the camshaft. An Oldham coupling is disposed on the side away from the camshaft of both the first bearing and the second bearing in the direction along the rotational axis.

A valve opening/closing timing control device that sets a relative rotation phase between a driving-side rotating body and a driven-side rotating body using a driving force of an electric actuator is compactly configured. The device is provided with: a first bearing disposed between an inner periphery of the driven-side rotating body and an eccentric member; a second bearing disposed between the eccentric member and an input gear on a side of the first bearing away from a camshaft in a direction along a rotational axis; and a front plate fixed to the driving-side rotating body on a side of the second bearing away from the camshaft. An Oldham coupling is disposed on the side away from the camshaft of both the first bearing and the second bearing in the direction along the rotational axis.

A camshaft phaser is provided that includes a rotor, a stator, and a locking cover. The rotor is selectively locked to the stator via a locking assembly arranged within a locking bore of the rotor. Contaminant particles that enter a first locking end of the bore are exited out a second venting end of the bore via a contaminant particle exit pathway.

The invention relates to a camshaft adjusting system (1) for an internal combustion engine of a motor vehicle, including a hydraulic camshaft adjuster (2) which has a stator (3), a rotor (4) that is rotatably mounted in the stator (3), and a hydraulic control system (6) that has a valve (5). The rotor (4) has at least one vane which protrudes into a pressure chamber formed between the rotor (4) and the stator (3) such that the pressure chamber is divided into two sub-chambers, each of which interacts with the hydraulic control system (6) such that a hydraulic pressure ratio is established between the two sub-chambers, said ratio specifying a relative rotational position between the rotor (4) and the stator (3), and is adjusted on the basis of the position of the valve (5). The camshaft adjusting system also includes an actuator (7) which is arranged adjacently in the axial direction of the camshaft adjuster (2) and which acts on the valve (5) for adjusting purposes. A hydraulic fluid section (8) is arranged on an actuator (7) face facing the camshaft adjuster (2), with this hydraulic fluid section (8) being designed to deflect a flow of hydraulic fluid exiting the valve (5) into the surroundings of the camshaft adjuster (2) back into the camshaft adjuster (2) in an operational state.