Abstract: An internal combustion engine, having a camshaft having at least one one-piece thrust plate, which is arranged and captively fixed between a drive element, and a function element, wherein the drive element and the function element are fixedly joined with the camshaft, wherein the thrust plate is in the cylinder crankcase and is an axial bearing plate and includes at least one of a wear reducing coating and a friction reducing coating, and wherein the thrust plate is guided at a radially outer edge in the cylinder crankcase

Abstract: An apparatus for storing energy includes a compression chamber for receiving a gas, a compression piston for compressing gas contained in the compression chamber, a first heat store for receiving and storing thermal energy from gas compressed by the compression piston, an expansion chamber for receiving gas after exposure to the first heat store, an expansion piston for expanding gas received in the expansion chamber, and a second heat store for transferring thermal energy to gas expanded by the expansion piston. The cycle used by the apparatus has two different stages that can be split into separate devices or combined into one device.

Abstract: A roller lifter for an internal combustion engine includes a cylindrical lifter body having a first end, a second end and a roller rotatably attached to the first end. The first end has a first diameter and the second end has a second diameter greater than the first diameter and a flat surface configured to engage a corresponding flat surface on an adjacent roller lifter and to prevent axial rotation of the roller lifter while in use. The roller lifter may further include a recess extending along a longitudinal axis from the second end toward the first end.

Abstract: A hydraulic support element having a housing, a pressure piston, a high pressure chamber for a hydraulic means extending between a bottom face of the pressure piston and a bottom of the housing, wherein the housing includes a passage for the hydraulic means, which communicates radially inwardly with an aperture in the pressure piston, wherein the pressure piston includes a deflecting sheath for the hydraulic means, tightly contacting the pressure piston at the interior jacket axially below the aperture and extending to the proximity of a head of the pressure piston, wherein a rising line for the hydraulic means is formed between the deflecting sheath and the interior jacket, which starts at the aperture and leads in the area of the head into a reservoir inside the deflecting sheath directly in front of the return valve and with the deflecting sheath having at least one perforation axially above its contact.

Abstract: In a variable valve operating device for an internal combustion engine, which is capable of changing operation characteristics of an engine valve in accordance with a change in rotation speed of a camshaft, a high-speed cam (60) including a base circle portion which has the same radius as that of a base circle portion of a low-speed cam (59) and also including a high-level portion which has a protruding amount larger than that of a high-level portion of the low-speed cam (59) is supported on a camshaft (43A) having the low-speed cam (59) fixed thereto such that the high-speed cam (60) is rotatable relative to the camshaft (43A), at a position adjacent to the low-speed cam (59); a cam follower member (46) is supported by an engine main body (11) to be operable in a manner following one of the low-speed cam (59) and the high-speed cam (60); and a centrifugal clutch (61A) configured to connect the high-speed cam (60) to the camshaft (43A) while synchronizing the phase of the high-speed cam (60) with that of the

Abstract: A camshaft adjuster (1) having a drive element (2), an output element (3), and a cover element (4), the cover element (4) being joined to the drive element (2) or to the output element (3) and having defined, deformable zones (5) that deform under the action of a force F, resulting in a deformation of the cover element (4), whereby the cover element (4) can be disassembled from or assembled to the drive element (2) or the output element (3).

Abstract: A camshaft adjuster which has a locking device by which a drive input and drive output part can be rotationally fixedly locked in a locking rotational position. The locking device has a multiplicity of engagement pairs which include one axial bar which is held in the drive input or drive output part and a bar slot which is formed in the respective other part. The engagement pairs are designed such that, during an adjustment of the drive output part in the drive direction, the bars can be placed in successive engagement with the bar slots in a relative rotational position between an end rotational position, which lags behind in the drive direction, and the locking rotational position. The bar slots prevent an adjustment of the drive output part counter to the drive direction and permit an adjustment in the drive direction until the locking rotational position is reached.

Abstract: A camshaft phaser includes a housing with a harmonic gear drive unit disposed therein. The harmonic gear drive unit includes a circular spline and a dynamic spline, a flexspline disposed within the circular spline and the dynamic spline, a wave generator disposed within the flexspline, and a rotational actuator connectable to the wave generator. A coupling adapter is disposed coaxially within the housing bore and fixed to the wave generator and supported in the housing by a bearing which is press fit onto a bearing surface of the coupling adapter. The coupling adapter has a coupling adapter bore with opposing drive lugs extending radially inward therefrom which are axially coincident with the bearing surface. A coupling of the rotational actuator is disposed within the coupling adapter bore and has opposing drive slots which receive the opposing drive lugs, thereby transmitting motion from the coupling to the coupling adapter.

Abstract: A cylinder head cover, and a gasket are disclosed for sealing a cylinder head and isolating cylinder head vibrations from a cylinder head cover body. An example cylinder head cover may include a gasket having an elongate first gasket part and a flexible second gasket part sealingly coupled with the first gasket part along a length of the first gasket part. A bottom carrier may be configured to hold the first gasket part against a cylinder head for sealing engagement with the cylinder head. In addition a cover body may be configured to provide a covering surface sealingly coupled with the second gasket part at a spaced apart distance from the cylinder head.

Abstract: An engine valve system comprises two cams (10,12) mounted coaxially, a summation rocker (14) coupled to followers (16,18) of both cams and movable in proportion to the instantaneous sum of the lifts of the respective cams, and a valve actuating rocker (20) pivotably coupled to the summation rocker (14) and operative to open an engine valve (22) in dependence upon the movement of the summation rocker (14). In the invention, the actuating rocker (20) rests on a hydraulic lash adjuster (24). A control spring (136) is provided to urge the summation rocker (14) in a direction to compress the hydraulic lash adjuster (24). A stop (138) associated with the control spring (136) limits the movement of the summation rocker (14) towards the lash adjuster (24) so as to set the clearance in the valve system when the valve (22) is closed and the cam followers (16,18) are on the base circles of the two cams (10,12).

Abstract: An arrangement of a camshaft adjuster (1) having a control device (4) which allows a selection to be made between an OPA and/or a CTA mode. The camshaft adjuster (1) has a third hydraulic medium duct CC which positions the camshaft adjuster (1) in a central position.

Abstract: A device (1) for varying the control times of gas exchange valves of an internal combustion engine having a stator (3) and a rotor (5) accommodated therein. The rotor (5) can be connected to a camshaft and can be adjusted by a pressure medium in the circumferential direction relative to the stator (3). The device (1) further includes a front cover disk (7) and a rear cover disk (9), between which the stator (3) and the rotor (5) are accommodated. The rear cover disk (9) is provided with a drive wheel (11) that can be connected to a crankshaft. A spring (13) for rotating the rotor (5) relative to the stator (3) is arranged between the rear cover disk (9) and a spring cover (15), wherein the spring cover (15) is positively connected to the drive wheel (11), whereby simple installation of the spring cover (15) on the device (1) is made possible.

Abstract: A variable valve timing apparatus includes a stopper piston which has an equalizing passage in an axial direction. Even if the engaging hole is filled with the oil, the equalizing passage enables the oil flows from an engaging hole to a holding hole when the stopper piston enters into the engaging hole. It is possible to form a vane as narrow as possible, and to enlarge a variable angular range. In addition, the stopper piston has both end faces which are substantially identical in surface area. Even if pulsation arises in oil pressure, pressures acting on both end faces of the stopper piston can be substantially cancelled and position of the stopper piston can be stabilized.

Abstract: Devices and related methods are disclosed that generally involve variable actuation of engine valves. In one embodiment, a valve train for a split-cycle internal combustion engine or an air hybrid split-cycle engine is provided that includes a cam phaser, a dwell cam, an adjustable mechanical element for performing a variable valve actuation function, and/or a valve seating control device. The devices and methods disclosed herein also have application in conventional internal combustion engines and can actuate inwardly-opening and/or outwardly-opening valves.

Abstract: An assembly for a valve train of an internal combustion engine, which has a hydraulic support element and a cam follower resting on one end via a bearing surface located on the bottom side thereof on a complimentary end side of a pressure piston of the support element. The piston extends across the outer shell in a bore of a crucible-shaped housing of the support element. The housing has an opening for hydraulic fluid, which is conductible via a channel between the housing and piston through a passage in the pressure piston to a storage chamber. In a section of a direct contact region between the bearing surface of the cam follower and end side of the piston, an anti-turn mechanism for the piston in relation to the cam follower is implemented. The piston is installed in a defined manner and is torsionally oriented in relation to the cam follower.

Abstract: A camshaft adjusting arrangement for varying angular position of a camshaft relative to a crankshaft of an internal combustion engine which has a drive element that is driven by the crankshaft and is rotatable in relation to the camshaft, at least two hydraulic chambers, to which a hydraulic fluid can be admitted to set a defined relative rotational position between the drive element and camshaft, formed between the drive element and camshaft, a first component and a second component. The first component has a cylindrical receiving face which receives a cylindrical seating face of the second component. To keep the resulting radial compressive stress between the components within an admissible range, at least one compensating element is arranged in the cylindrical receiving face of the first component and/or in the cylindrical seating face of the second component.

Abstract: A device (11) for variably adjusting the control times of gas exchange vales (9, 10) of an internal combustion engine (1) having a hydraulic phase adjustment device (12) and at least one volume accumulator (31), wherein the phase adjustment device (12) can be brought into driving connection with a crankshaft (2) and a camshaft (6, 7) and at least one early adjustment chamber (24) and at least one late adjustment chamber (25) which can be supplied with pressure medium via pressure medium lines (26a, b, p. v), or from which pressure medium can be drained.

Abstract: A rankine cycle system includes a heater configured to circulate a working fluid in heat exchange relationship with a hot fluid to vaporize the working fluid. A hot system is coupled to the heater. The hot system includes a first heat exchanger configured to circulate a first vaporized stream of the working fluid from the heater in heat exchange relationship with a first condensed stream of the working fluid to heat the first condensed stream of the working fluid. A cold system is coupled to the heater and the hot system. The cold system includes a second heat exchanger configured to circulate a second vaporized stream of the working fluid from the hot system in heat exchange relationship with a second condensed stream of the working fluid to heat the second condensed stream of the working fluid before being fed to the heater.

Abstract: A waste heat recovery system includes a closed fluid circuit through which an organic motive fluid flows, and a heat exchanger for transferring heat from waste heat gases to the motive fluid. A first flashing unit flashes the motive fluid which exits the heat exchanger into a high pressure flashed vapor portion. Another flashing unit flashes liquid non-flashed motive fluid, producing a low pressure flashed vapor portion. A high pressure turbine module receives the high pressure flashed vapor portion to produce power, and a low pressure turbine module receives a combined flow of motive fluid vapor comprising the low pressure flashed vapor portion and discharge vapor from the high pressure turbine module whereby additional power is produced.

Abstract: A variable valve train for actuating a plurality of gas exchange valves of an internal combustion engine includes a plurality of individual cam sleeves axially displaceable relative to one another and disposed so as to form the camshaft. Each of the plurality of individual cam sleeves include a plurality of different cam profiles. A switching shaft is disposed inside the plurality of cam sleeves and is configured to rotate together with the plurality of cam sleeves. A switching ball operatively connects one of the plurality of cam sleeves to a switching contour disposed on the switching shaft. A displacement piece is disposed so as to be rotationally engaged but axially displaceable on one of the plurality of cam sleeves and connected to the switching shaft. An actuator is operatively connectable to the displacement piece by the switching ball so as to displace the one of the plurality of cam sleeves.