The present disclosure provides an article. The article includes an adhesive layer with two opposing surfaces. The adhesive layer includes (i) a functionalized ethylene-based polymer having a melt index from 0.1 g/10 min to 300 g/10 min; (ii) from 0.01 wt % to 45 wt % of a functionalized hydrocarbon; (iii) a tackifier; and (iv) optionally, a crosslinking agent.

A tensioner for reducing vibration and noise associated with a vehicle engine includes: a tensioner arm having a cylindrical protrusion extending from a first side of the tensioner arm; the cylindrical protrusion having at least one counter-bore disposed on a surface of the cylindrical protrusion and an inner bore extending through the cylindrical protrusion; an axle adapted to be received by the inner bore, the tensioner arm being adapted to rotate about the axle; a spring disposed proximate a second side of the tensioner arm, opposite the first side, the spring being adapted to bias the tensioner arm in a first direction; and a damping structure that includes a gripping seat adapted to engage a portion of the tensioner arm, in which the damping structure limits rotation of the tensioner arm in a second direction opposite the first direction.

A camshaft phaser for the adjusting valve timing of a combustion engine includes a stator and a rotor that can rotate relative to the stator. The rotor is connected to one end of the camshaft via an adapter as well as via a sprocket which is fixedly mounted to the stator. The sprocket is slideably mounted about the camshaft with a first guiding section and is slideably mounted about the adapter with a second guiding section.

An internal combustion engine includes an engine housing and a valve drive with a camshaft, a phase adjuster operatively connected to the camshaft, and an actuator for actuating the phase adjuster. The phase adjuster and the actuator delimit an interior space. A cover surrounds the phase adjuster. An actuator holder is provided for fastening the actuator to the engine housing, wherein the actuator holder is surrounded by the cover. A sealing element is disposed between the phase adjuster and the actuator holder. The sealing element seals the interior space against liquid discharge. A method for assembling an internal combustion engine is also provided.

A cylinder head assembly for a cylinder of a four stroke internal combustion engine, including an intake rotor assembly that includes an intake rotor body, a first intake rotor shell portion, and a second intake rotor shell portion, and is operable to be rotatably received in at least one through bore of a cylinder head member. An exhaust rotor assembly includes an exhaust rotor body, a first exhaust rotor shell portion, and a second exhaust rotor shell portion, and is operable to be rotatably received in the at least one through bore of the cylinder head member. At least one of the first and second intake rotor shell portions or the first and second exhaust rotor shell portions are operable to be urged outwardly towards or against an interior surface of the at least one through bore of the cylinder head member so as to create a seal therebetween.

A method is disclosed for adaptively controlling an engine system of a motor vehicle comprising the steps of evaluating the outputs from angular position sensors associated with inlet and exhaust camshafts of an engine of the engine system to establish whether differences between the currently measured positions and previously saved positions are the result of elongation of an endless drive used to drive the camshafts or due to some other reason. If it is confirmed that the differences are due to elongation of the endless drive then the measured values of angular position are used in the control of a number of engine functions.

Provided is a valve timing control apparatus, for an internal combustion engine, capable of sufficiently draining hydraulic oil from between a pulley and a housing body. The pulley includes a through-hole extending axially therethrough at a position radially outward with respect to the outer peripheral surface of the housing body. The through-hole is formed so as to extend over a bottom portion and cylindrical portion of the pulley.

Methods and systems are provided for a cam drive system of an engine. In one example, a front end of an engine includes an idler gear assembly including an idler gear and idler pulley, the idler gear in meshing engagement with a first end of a crankshaft and the idler pulley coupled to and sharing a rotational axis with the idler gear. The front end of the engine may further include first and second camshaft pulleys positioned vertically above the idler gear assembly and a cam drive belt contacting each of the first and second camshaft pulleys and the idler pulley.

A synchronous drive is provided in which a non-circular rotor generates a fluctuating corrective torque to counteract a fluctuating load torque on a driven rotor. The angular orientation of the non-circular rotor can vary relative to the driven rotor so as to change the phase angle of the fluctuating corrective torque relative to the driving rotor. The arrangement may be applied in internal combustion engines with variable valve timing (VVT) systems, wherein the phase angle of a fluctuating load torque presented on a cam rotor, due to forces arising from actuation of intake and/or exhaust valves by the camshaft, varies relative to the crankshaft. The phase angle of the fluctuating corrective torque is also varied relative to the crankshaft to maintain phase relationship with the fluctuating load torque and thereby maintain reduced cam torsional vibrations and span tensions provided by the non-circular rotor during operation

A control system for internal combustion engines having four valves per cylinder. An inlet valve and an exhaust valve are controlled by a basic camshaft. Another inlet valve and another exhaust valve are controlled by a control camshaft. The two camshafts are connected to a crankshaft and engine torque is managed by an electronic control unit. The system comprises a motor/generator unit, connected to the control camshaft; a differential, connected to the crankshaft and to the control camshaft; a control shaft, connected to the differential; an actuator, connected to the control shaft; a one-way restrictor valve connected to a shut-off valve and to the actuator; an oil circuit, connected to the actuator by means of the shut-off valve and a control solenoid that acts on the shut-off valve.