Abstract: The invention relates to a centrifugal pendulum absorber for a flywheel, including, a plurality of pendulum weights being arranged circumferentially around a center axis of the centrifugal pendulum absorber, wherein, the centrifugal pendulum absorber further including, a plurality of closed compartments which are arranged circumferentially around the center axis, wherein at least one pendulum weight is arranged in each one of the plurality of closed compartments, wherein a channel for fluid is provided at least between two abutting closed compartments, as seen in the circumferential direction, and wherein the channel for fluid fluidly connects the two abutting closed compartments.

Abstract: A pendulum weight for a centrifugal pendulum absorber for a flywheel of a vehicle includes a bearing surface that, when the pendulum weight is mounted radially outside of a central axis of the pendulum absorber, cooperates with a corresponding bearing surface provided on a separate part of the pendulum absorber, with respect to which separate part the pendulum weight is thereby configured to be movable along a predetermined pendulum path. The pendulum weight further includes a pocket formed in connection with the bearing surface, the pocket being configured to receive at least a portion of the separate part when the pendulum weight moves along the pendulum path. The pendulum weight includes an outward portion and a separate inward portion which are assemblable to form the pendulum weight, the outward portion being configured to be located radially outside of the inward portion with respect to the central axis when mounted.

Abstract: The invention relates to a centrifugal pendulum absorber for a flywheel, including, a plurality of pendulum weights being arranged circumferentially around a center axis of the centrifugal pendulum absorber, wherein, the centrifugal pendulum absorber further including, a plurality of closed compartments which are arranged circumferentially around the center axis, wherein at least one pendulum weight is arranged in each one of the plurality of closed compartments, wherein a channel for fluid is provided at least between two abutting closed compartments, as seen in the circumferential direction, and wherein the channel for fluid fluidly connects the two abutting closed compartments.

Abstract: A pendulum weight for a centrifugal pendulum absorber for a flywheel of a vehicle includes a bearing surface that, when the pendulum weight is mounted radially outside of a central axis of the pendulum absorber, cooperates with a corresponding bearing surface provided on a separate part of the pendulum absorber, with respect to which separate part the pendulum weight is thereby configured to be movable along a predetermined pendulum path. The pendulum weight further includes a pocket formed in connection with the bearing surface, the pocket being configured to receive at least a portion of the separate part when the pendulum weight moves along the pendulum path. The pendulum weight includes an outward portion and a separate inward portion which are assemblable to form the pendulum weight, the outward portion being configured to be located radially outside of the inward portion with respect to the central axis when mounted.

Abstract: A flywheel arrangement for an engine of a vehicle, includes: a flywheel configured to be connected to a crankshaft of the engine for common rotation around a center axis, a pendulum weight arranged between the center axis and a radially peripheral surface of the flywheel, the pendulum weight being movable with respect to the flywheel along a predetermined pendulum path, a ring member positioned radially outside of the pendulum weight, the ring member being connected for common rotation with the flywheel around the center axis, and at least one pair of cooperating bearing surfaces, each pair of cooperating bearing surfaces including an outer bearing surface provided on the ring member and an inner bearing surface provided on the pendulum weight, the at least one pair of cooperating bearing surfaces together defining the predetermined pendulum path.

Abstract: The disclosure relates to a centrifugal pendulum absorber for a flywheel, including, a plurality of pendulum weights being arranged circumferentially around a center axis (C) of the centrifugal pendulum absorber, each pendulum weight being configured to be movable along a predetermined pendulum path during use, wherein, the centrifugal pendulum absorber further including at least one stopping element for at least one of the pendulum weights which is positioned such that it defines an end point of the predetermined pendulum path, at which end point the at least one of the pendulum weights is configured to come into contact with the at least one stopping element, wherein at least a portion of the at least one stopping element which is intended to contact the at least one pendulum weight includes a copper alloy, such as brass and/or bronze.

Abstract: The invention relates to a torsional damper (210) in a clutch disc arrangement (200) arranged to indicate damping performance of the torsional damper (210). The torsional damper (210) comprises a driven plate (211), an output hub (212), intermediate friction plates (213) arranged on either side of the driven plate (211) and a resilient member (214) arranged to press the intermediate friction plates (213) against the driven plate (211) or against the output hub (212) with a pressure force. The intermediate friction plates (213) and the resilient member (214) are rotationally fixed to the output hub (212) or the driven plate (211) forming a rotationally fixed stack (213, 214, 212; 213, 214, 211). The rotationally fixed stack (213, 214, 212; 213, 214, 211) comprises a detection friction plate (215) rotatably decoupled from the rotationally fixed stack (213, 214, 212; 213, 214, 211) and arranged in the rotationally fixed stack (213, 214, 212; 213, 214, 211).

Abstract: The invention relates to a torsional damper (210) in a clutch disc arrangement (200) arranged to indicate damping performance of the torsional damper (210). The torsional damper (210) comprises a driven plate (211), an output hub (212), intermediate friction plates (213) arranged on either side of the driven plate (211) and a resilient member (214) arranged to press the intermediate friction plates (213) against the driven plate (211) or against the output hub (212) with a pressure force. The intermediate friction plates (213) and the resilient member (214) are rotationally fixed to the output hub (212) or the driven plate (211) forming a rotationally fixed stack (213, 214, 212; 213, 214, 211). The rotationally fixed stack (213, 214, 212; 213, 214, 211) comprises a detection friction plate (215) rotatably decoupled from the rotationally fixed stack (213, 214, 212; 213, 214, 211) and arranged in the rotationally fixed stack (213, 214, 212; 213, 214, 211).

Abstract: A method and device for operating a powertrain of a motor vehicle are provided, wherein the powertrain includes an internal combustion engine, a transmission and a friction clutch arranged there between in order to control a power flow between the internal combustion engine and the transmission. The method includes the steps of detecting clutch judder, analyzing clutch judder, and determining a type of clutch judder. Based on determined type of clutch judder the method further includes selecting a udder countermeasure from a number of predetermined judder countermeasures and executing selected judder countermeasure. Detected clutch judder can be taken care of in an efficient way and future clutch judder may be prevented.

Abstract: A method and device for operating a powertrain of a motor vehicle are provided, wherein the powertrain includes an internal combustion engine, a transmission and a friction clutch arranged there between in order to control a power flow between the internal combustion engine and the transmission. The method includes the steps of detecting clutch judder, analysing clutch judder, and determining a type of clutch judder. Based on determined type of clutch judder the method further includes selecting a udder countermeasure from a number of predetermined judder countermeasures and executing selected judder countermeasure. Detected clutch judder can be taken care of in an efficient way and future clutch judder may be prevented.

Abstract: A method of processing data for storage in a storage medium coupled to a processing unit adapted to access data stored in the storage medium as one or more pages of data, each page having a predetermined page size and a corresponding virtual memory address, the method comprising: obtaining a compressed data item including compressed data corresponding to a first memory page of uncompressed data; dividing the compressed data item into an initial part and a supplementary part, the initial part having an initial part size; determining respective second memory locations for the supplementary parts so as to reduce the number of sectors occupied by the supplementary parts; allocating the initial part together with an index data item at a first memory location associated with the first memory page, the index data item being indicative of a second memory location; allocating the supplementary part at the second memory location.

Abstract: A torsional vibration damper hub for a vehicle clutch includes a first row of springs extending substantially in the clutch rotating direction and disposed in openings formed in a first inner annular plate and a first pair of outer annular plates; a second row of springs extending substantially in the clutch rotating direction and is disposed in openings formed in the second inner annular plate and the second pair of outer annular plates; the first and second row of the springs being arranged on a same radius from a center of rotation of the clutch; the springs in the first row of springs arranged in one first axial level are axially overlapping the springs in the second row of springs arranged in a second axial level with the purpose to decrease a total axial length of the clutch. In an alternative embodiment the damper hub is substantially identical to a dual damper hub in conventional twin-plate clutches.

Abstract: A method for determining the size of each of a predetermined number of memory frames to be allocated for storing data blocks in a memory, and a processing device for implementing the method. The method comprises determining a data block size distribution for at least one set of data blocks. A data block size of the data block size distribution is eliminated iteratively until the number of data block sizes corresponds to the number of sizes of the memory frames. The data block sizes to merge are selected by means of a slack prediction algorithm. The sizes of the memory frames are determined as the data block sizes of the distribution which remain after the elimination.

Abstract: A method of processing data for storage in a storage medium coupled to a processing unit adapted to access data stored in the storage medium as one or more pages of data, each page having a predetermined page size and a corresponding virtual memory address, the method comprising: obtaining a compressed data item including compressed data corresponding to a first memory page of uncompressed data; dividing the compressed data item into an initial part and a supplementary part, the initial part having an initial part size; determining respective second memory locations for the supplementary parts so as to reduce the number of sectors occupied by the supplementary parts; allocating the initial part together with an index data item at a first memory location associated with the first memory page, the index data item being indicative of a second memory location; allocating the supplementary part at the second memory location.

Abstract: A torsional vibration damper hub for a vehicle clutch includes a first row of springs extending substantially in the clutch rotating direction and disposed in openings formed in first inner annular plate and first pair of outer annular plates; second row of springs extending substantially in the clutch rotating direction and disposed in openings formed in the second inner annular plate and the second pair of outer annular plates; the first and second row of the springs being arranged on same radius from center of rotation of the clutch; the springs in the first row of springs arranged in one first axial level are axially overlapping the springs in the second row of springs arranged in a second axial level with the purpose to decrease a total axial length of the clutch. In an alternative embodiment the damper hub is substantially identical to a dual damper hub in conventional twin-plate clutches.

Abstract: X-ray tube (11/12) for high dose rates, a corresponding method for generating high dose rates with X-ray tubes (11/12) as well as a method for producing corresponding X-ray devices (11/12), in which an anode (31/32) and a cathode (21/22) are disposed opposite each other in a vacuumized internal chamber (41/42), electrons e? being accelerated to the anode (31/32) by means of impressible high voltage. The anode (31/32) is made of a layer or coating of a metal having a high atomic number, for conversion of the electrons (e?) into X-ray radiation (?) with cooling. The cathode (21/22) comprises a substrate substantially transparent for X-ray radiation (?). In particular, the likewise substantially transparent for X-ray radiation (?). In particular, the cathode (31/32) can close off the vacummized internal chamber (41/42) toward the outside.

Abstract: The invention relates to an X-ray tube (11) with a cathode that emits electrons (e?) into an interior chamber (40) that is under vacuum, and with a target (31, 32), configured as an anode, for generating high-dose X-radiation (?), the cathode comprising at least one cold cathode (21, 22, 23) based on an electron (e?) emitting material having a field-enhancing structure (70). The invention especially relates to an X-ray tube (11) having a cold cathode (21, 22, 23) that comprises at least one support layer (201) for holding the electron (e?) emitting material, the emission area of the cold cathode (21, 22, 23) being defined by the shape of the support layer (201).

Abstract: The invention relates to an X-ray tube (11/12) for high dosing performances, a corresponding method for the production of high dosing performances with X-ray tubes (11/12) and method for the production of corresponding X-ray devices (11/12), wherein an anode (31/32) and a cathode (21/22) are arranged opposite each other in a vacuumed internal chamber (41/42). Electrons (e?) are accelerated by means of high voltage which can be applied to the anode (31/32). The anode (31/32) is made of a metal layer having a high ordinal number which is used to convert the electrons (e?) into X-ray radiation (Y) with the aid of a coolant. The cathode (21/22) comprises an essentially transparent carrier material for X-ray radiation (Y) and an essentially transparent electron emitter layer for X-ray radiation (Y). According to the invention, the cathode (31/32) can, in particular, close the vacuumed internal chamber (41/42) from the outside.

Abstract: A method for determining the size of each of a predetermined number of memory frames to be allocated for storing data blocks in a memory, and a processing device for implementing the method. The method comprises determining a data block size distribution for at least one set of data blocks. A data block size of the data block size distribution is eliminated iteratively until the number of data block sizes corresponds to the number of sizes of the memory frames. The data block sizes to merge are selected by means of a slack prediction algorithm. The sizes of the memory frames are determined as the data block sizes of the distribution, which remain after the elimination.

Abstract: A method and apparatus for facilitating postmortem debugging of a computer hardware failure. When an error occurs, a controller places a memory, such as a synchronous dynamic random access memory (SDRAM), in a self refresh mode in which the memory is able to retain its data contents. The data contents of the SDRAM are then written to a secondary storage location and a hardware reset is performed.