Abstract: The invention relates to a device for camshaft adjustment in an internal combustion engine, having a lifting profile element which is provided in a rotationally fixed manner on an axially movable mounted camshaft and which provides a control groove, and having a control unit for generating a predetermined axial movement of the camshaft, wherein the control unit has a tappet unit which is preferably movable radially with respect to the camshaft and which is designed to controllably engage into the lifting profile element, wherein the lifting profile element forms a first control groove which is designed to interact with the tappet unit at a first penetration depth in order to describe a first axial movement of the camshaft, and the lifting profile element forms a second control groove which is designed to interact with the tappet unit at a second penetration depth, which differs from the first penetration depth, in order to describe a second axial movement, which differs from the first axial movement, of the c

Abstract: The object is to provide a lash adjuster that can be easily and repeatedly mounted on a swing arm type valve gear, having an adjusting screw that can be repeatedly held in a pushed-in state with a general-purpose turning tool such as a wrench. A serrated internal thread 24 is formed on the inner circumferential face of a cylindrical body 21 having closed bottom end, and a serrated external thread 26 formed on the outer circumferential face of an adjusting screw 25 engages with the internal thread 24. A return spring 27 is mounted in the body to bias the adjusting screw 27 in the protruding direction. A friction member 31 is provided between the bottom faces of the adjusting screw 25 and the body 21. A spherical pivot portion 32 is formed on the top of the adjusting screw 25, and an engaging hole 33 is formed in the top end of the pivot portion 32.

Abstract: An intermediate lock pin (ILP) ILP type variable valve timing unit may include an ILP type stator having at least one chamber formed therein, a rotor accommodated in the chamber to rotate relatively to the ILP type stator, and a lock maintaining portion provided in the chamber to maintain locking of the stator and the rotor when an engine stops working. The ILP type continuously variable valve timing device includes an ILP type variable valve timing unit, an ILP type oil control valve mounted on a cam cap engaged with a cylinder head to operate a lock maintaining portion of the variable valve timing unit, and an ILP type oil flow path branched from a main oil flow path of the cylinder head to guide the supply of oil to the variable valve timing unit through the cam cap and the ILP type oil control valve.

Abstract: A locking and rotation angle device for locking and setting maximum rotational adjustability of a drive part fixed to the crankshaft and a driven part fixed to the camshaft of a camshaft adjuster. The driven part is pivotably adjusted to the drive part, which has a locking bar received in the drive or driven part, a locking bar member formed in the respectively other part, and a rotation angle limiting member formed in the correspondingly other part. Limiting wall sections serve as stops for the locking bar for adjusting a maximum rotational adjustability. The locking bar member, rotation angle limiting member, and locking bar are disposed such that the locking bar is displaced via the displacement mechanism into a locking position, engaging into the locking bar member, and into an unlocking position, in which it is released by the locking bar member and engages in the rotation angle limiting member.

Abstract: A valve opening arrangement includes a first contact surface on a first member, and a second contact surface on a second member discrete from the first member. A first and a second opening are provided, and a first and a second valve movable to open and close the first and second opening, respectively, are provided. A yoke is arranged to move the first valve and not the second valve when contacted by the first contact surface and is arranged to move the first valve and the second valve when contacted by the second contact surface.

Abstract: A feeder for a camshaft adjuster is provided, including a central screw, a camshaft, and at least one flow resistance element. The camshaft is provided with a bore for accommodating the central screw. A channel is located between the camshaft and the central screw, in which the flow resistance element is provided in order to affect a flow of a fluid in the channel.

Abstract: A coupling device (1) of a switchable cam follower (2), in which a borehole (9) extends above a contact (8) for a support element in an outer lever (3) of the cam follower (2), and this borehole has a first section (10) of large diameter that starts from an outer side (11) of a crosspiece (6) on the other end (7) to which connects to a second section (12) of accordingly smaller diameter up to directly before an inner side (13) of the crosspiece (6). A smooth cylindrical coupling slide (14) is guided in a sealing manner through the second section (12), and this coupling slide projects with a sub-region (15) into the first section (10). This sub-region (15) is encompassed by a compression spring (16) that acts, on one end, against an annular end (17) formed between the sections (10, 12) and, on the other end, against a catch element (19) arranged on the lateral surface (18) of the sub-region (15).

Abstract: A camshaft adjuster (1) having a variable ratio gear unit (2). Usually, a drive movement of an electrical actuating assembly (7) is transmitted into a variable ratio gear unit (2) of a camshaft adjuster (1) on the side which faces away from the camshaft (6). According to the invention, the abovementioned drive movement is transmitted in from the side of the variable ratio gear unit (2) which faces the camshaft (6). As a result, a further assembly, for example a vacuum pump, can be driven by the variable ratio gear unit (2) on the side of the variable ratio gear unit (2) which has become free and faces away from the camshaft (6). An actuating shaft (4) of the actuating assembly (7) is preferably mounted via a bearing (34) which is supported on a circumferential face of the camshaft (6). This results in a reduced axial overall size of the camshaft adjuster and extended possibilities for the arrangement of an actuating assembly and the connection of additional assemblies.

Abstract: A rocker arm configured to be supported by a support portion of an internal-combustion engine and to be driven in a swinging manner by a cam. The rocker arm includes a rocker arm body including a cam follower having a first slide-contact surface, wherein the first slide-contact surface is in sliding contact with the cam, a fulcrum portion including a second slide-contact surface, wherein the second slide-contact surface swingably is in sliding contact with respect to the support portion, and a lubricant discharging portion for biasing a lubricant supplied from the fulcrum portion in a direction toward the first slide-contact surface and discharging the lubricant. The fulcrum portion penetrates the rocker arm and is fastened to the rocker arm body. The fulcrum portion has a through hole supplying the lubricant to the lubricant discharging portion through the rocker arm body.

Abstract: The invention relates to an actuating device for two parallel rotating camshafts. The aim of the invention is to optimize the installation space required for such a device. For this purpose, both camshafts (3, 4) consist of two shafts that rotate concentrically one inside the other and that can be rotated in relation to each other. On one end of the camshafts (3, 4), one of the two shafts (3?, 3?; 4?, 4?) is driven by the crankshaft (1) via a single, directly acting force-transmitting element (2). A phase adjuster (5) is provided on the other end of the camshafts (3, 4) and allows the simultaneous adjustment of both shafts (3?, 4?; 3?, 4?) in relation to each other by means of a force-transmitting element (6) acting on the phase adjuster (5).

Abstract: In a stroke-transmitting device for a variable transmission of an operating stroke to a member to be actuated, specifically a gas exchange valve for an internal combustion engine, including a control unit with first and second control structures, a control cam is provided for coupling the first and second control structures and having different control regions which are displaceable for an adjustment of the stroke of the member to be actuated with at least first and second degrees of freedom for controlling the stroke transmitted to the member to be actuated.

Abstract: A switchable cam follower of a valve train assembly of an internal combustion engine is proposed, with an external lever that encloses an internal lever with its arms, of which components, that can deviate from each other flexibly, run on an axis that is attached to a valve side end, and the internal lever on an underside on the valve side end possesses a mechanism for a gas exchange valve as well as a complementary surface at the other end for storage on a head of a support element. A special characteristic is that guidance plates for the gas exchange valve come out from the underside of the external lever. That way, the switchable cam follower can be made narrower at least on the valve side. In addition, development of the mechanism for the gas exchange valve on the internal lever is simplified.

Abstract: An internal combustion engine is described having a valve mechanism that comprises an SCP camshaft operating two sets of valves. The first set of valves is operated via a summation rocker system such that the valve lift characteristic results from the combination of two cam profiles. The second set of valves has a valve lift characteristic that is different from that of the first set. In the invention, changing the valve lift characteristic of the first set of valves by varying the phase of the inner shaft of the SCP camshaft relative to the outer tube of the SCP camshaft serves additionally to alter the operation of the second set of valves.

Abstract: An engine cylinder head 10 is disclosed having a first camshaft 14 driven by the engine crankshaft via a phasing system 12 mounted to the camshaft 14. A second camshaft 22 is driven via the phasing system 12 mounted to the first camshaft, and two oil control valves 46, 48 are connected to the phasing system for enabling the phasing system to vary the timing of each camshaft independently with respect to the engine crankshaft in response to oil pressure signals from a respective one of the control valves. In the invention, oil feeds from each control valve 46, 48 enter the camshaft 14 via an oil feed journal 34, 36, and connect to the phaser 12 via axially extending channels within the camshaft 14.

Abstract: A materials combination for a camshaft and follower of an engine valve train provides excellent wear resistance. The camshaft or camshaft lobes are made from a malleable cast iron and the cam followers are made from a carbonitrided 52100 or 4130 steel to provide excellent wear resistance equivalent to diamond-like coatings at greatly reduced cost.

Abstract: A radiant tube heater with a burner assembly, a radiant tube assembly and a combustion air pre-heater; wherein the burner assembly comprises: a burner fuel nozzle; a plenum chamber and a pre-mixer chamber; the plenum chamber having a combustion air inlet; wherein in use: combustion air flows from said plenum chamber through an orifice to said pre-mixer where said air is mixed with burner fuel entering said pre-mixer through said nozzle prior to being combusted at a burner head; said pre-mixer being at least partly located within said radiant tube assembly; and where in use at least part of the combustion air supplied to said plenum is preheated in said air pre-heater using residual sensible heat of the hot combustion gas products of the heater.

Abstract: A magneto-rheological fluid controlled camshaft phaser is provided having a stator with inwardly directed projections which define working spaces therebetween. The stator is adapted to be connected to the crankshaft via a timing gear and chain. A rotor is located radially inside the stator and is connected to the camshaft. Rotor lugs extend radially outwardly from the rotor into the working spaces, dividing them into first and second chambers on each side of the rotor lugs. A magneto-rheological fluid is located in the chambers, and the chambers on each side of each rotor lug are connected via a clearance space between the radially outer surface of the lugs and the inner surface of the stator located between the projections. The rotor is connected to the camshaft. An electromagnetic assembly is mounted adjacent to the stator and includes at least one electromagnet along with at least one ferrous focusing piece.

Abstract: A rocker arm supported by a support portion of an engine and to be driven by a cam includes a sheet-metal rocker arm body manufactured by plastic working and including a cam follower, a fulcrum portion manufactured by cutting and including a through hole supplying lubricant, and a lubricant discharging hole. The cam follower includes a first slide-contact surface being in sliding contact with the cam. The lubricant discharging hole is defined by an outer surface of the fulcrum portion and an outer surface of the sheet-metal rocker arm body and in communication with the through hole. The lubricant discharging hole biases the lubricant supplied from the through hole in a direction toward the first slide-contact surface.

Abstract: A valve timing control device includes a driving side rotational member, a driven side rotational member, a fluid pressure chamber, a parting portion dividing the fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, a restriction member, a restriction recessed portion for restricting a displacement of a relative rotational phase within a range between a most advanced angle phase or a most retarded angle phase and a predetermined phase when the restriction member is inserted into the restriction recessed portion, and a restriction cancellation passage, wherein a communication between the accommodation portion and one of the advanced angle chamber and the retarded angle chamber via the cancellation passage is interrupted at least when the restriction member contacts one of end portions of the restriction recessed portion, and the restriction member is restricted so as not to move over the other one of the end portions.

Abstract: The present invention generally relates to a cooking oven, which is provided with a cooking cavity and a door adapted to close the cooking cavity. The door is provided with an outer frame and one or more glass panes supported by such frame along the periphery thereof. On the surface of at least one of the glass panes there are applied heating means, which include a layer of substantially clear, e.g. transparent resistive material, and means adapted to connect two sides of such layer of resistive material to appropriate terminals energizable by an electric voltage supplied from a source available inside the oven.