A valve timing control device for an internal combustion engine includes: a driving rotation member, a driven rotation member, a speed reduction mechanism, a circumferential clearance of the each of the rolling member being formed within an angle range of 0.01 to 0.4 in a circumferential direction from a reference line extending from a rotation axis of the driving rotation member in a radial direction, in a space constituted by the eccentric rotation member, the internal teeth constituting section, and the one of the holding holes.

Methods and systems are provided for performing fuel vapor canister purging operations during engine off conditions. In one example, a method may include, responsive to an indication of breakthrough of vapors from a fuel vapor canister during engine-off conditions, configuring a first cylinder with both intake and exhaust valves open, opening a canister purge valve, and applying air pressure to the vapor canister such that desorbed canister vapors may be routed to an exhaust catalyst, the exhaust catalyst temperature maintained above a light off temperature. In this way, during engine-off conditions, including conditions wherein a vehicle is powered solely by battery, bleedthrough emissions may be reliably reduced by purging the vapor canister to the exhaust catalyst without requiring turning on the engine.

A magnetic actuator or liner actuator with improved plunger control and a simplified construction technique is provided.

An internal combustion engine includes a crankshaft rotatable about a crankshaft axis; a camshaft rotatable by the crankshaft about a camshaft axis; an engine cover defining an engine cover volume within the internal combustion engine; a drive member disposed within the engine cover volume which transfers rotational motion from the crankshaft to the camshaft; a camshaft phaser disposed within the engine cover volume which controllably varies the phase relationship between the crankshaft and the camshaft; an actuator which operates the camshaft phaser; and an actuator mount within the engine cover volume which mounts the actuator structurally independent of the engine cover, thereby allowing removal of the engine cover independently of the actuator.

A sliding cam actuator for a sliding cam system, including a housing defining a housing interior, and at least one coil former having a winding for generating a magnetic force when current flows, further including a moving pin or control pin extendable out of the housing by the magnetic force or a spring force and designed to dip into a displacement groove of a sliding can. A sealing element sealing off the interior of the housing from the outside is arranged between a component fixed to the housing and a component fixed to the moving pin. A sliding cam system including at least one camshaft, on which at least one sliding cam having a displacement groove is arranged such that the sliding cam can be displaced but is fixed against rotation, and into which sliding cam a moving pin of a sliding cam engages is provided.

A valve timing control device of internal combustion engine comprises a chain case 6 that is fixed to a cylinder head 101 of the engine and has a circular opening 55 for receiving therein a cylindrical housing 5a of an electric motor 8, an annular seal member 58 that is operatively received in an annular clearance defined between an outer cylindrical wall of the cylindrical housing 5a and an inner cylindrical wall of the circular opening 55, and a cover member 4 that is connected to the chain case 6 to cover the circular opening thereby concealing the annular seal member from the outside, wherein when the cover member 4 is removed from the chain case 6, the annular seal member 58 becomes exposed to the outside through the circular opening 55 of the chain case 6 for a visual inspection of the annular seal member.

An internal combustion engine includes a crankshaft rotatable about a crankshaft axis; a camshaft rotatable by the crankshaft about a camshaft axis; an engine cover defining an engine cover volume within the internal combustion engine; a drive member disposed within the engine cover volume which transfers rotational motion from the crankshaft to the camshaft; a camshaft phaser disposed within the engine cover volume which controllably varies the phase relationship between the crankshaft and the camshaft; an actuator which operates the camshaft phaser; and an actuator mount within the engine cover volume which mounts the actuator structurally independent of the engine cover, thereby allowing removal of the engine cover independently of the actuator.

A system and method comprising four valves per cylinder of a multi-cylinder engine is provided to control cylinder intake and exhaust valves independently from other cylinders in response to engine operating conditions. The engine valve deactivation system for the engine may comprise two or more cylinders wherein each cylinder has two exhaust valves and two inlet valves. The system and method may allow for cylinder deactivation and/or high swirl to both be delivered.

An electromagnetic actuating apparatus with two armature means which are designed to exert an actuating force on two tappet units which are extended in the longitudinal direction along a longitudinal movement axis and are guided such that they can be moved in a parallel manner in a common guide section of a housing which accommodates the armature means, wherein the tappet units each have an engagement end which is designed to interact with an actuating groove in a motor vehicle motor adjustment system and projects from the guide section at least in an engaged state, and the common guide section forms a guide end surface in which guide openings associated with the two tappet units, are open, wherein a connecting path which runs through center axes of the only two guide openings in the guide end surface forms an offset (v) from a surface center point of the guide end surface and/or from a surface center point of a housing end surface of the housing, wherein the surface center point lies on a perpendicular bisector of the connecting path.

A valve timing control apparatus of an internal combustion engine may include a driving rotational body to which torque is transmitted from a crankshaft, a driven rotational body fixed to a camshaft to which torque is transmitted from the driving rotational body, an electric motor disposed between the driving rotational body and the driven rotational body and relatively rotating the driving rotational body and the driven rotational body when electric power is applied thereto, and a deceleration mechanism that decelerates a rotational speed of the electrical motor and transmit the decelerated rotational speed to the driven rotational body.