Abstract: The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems.

Abstract: The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems.

Abstract: A sealing element for sealing a shaft comprises a stiffening part, a first elastomer part connected to the stiffening part and adapted to adjoin the housing part and provide a static seal relative, and a second elastomer part of an elastomer material different from the elastomer material forming the first elastomer part. The second elastomer part is connected to the stiffening part and comprises a sealing section adapted to adjoin the shaft to seal a space. The sealing section comprises a return structure for returning a leaking fluid to a space to be sealed. The sealing section also comprises a region at one axial end portion of the sealing section which is peripherally closed in itself and extends along an inner surface of a circular cylinder portion of the sealing section that is adapted to adjoin and seal the shaft as the shaft is not turning.

Abstract: A seal assembly seals a first portion of a machine part relative to a second portion of the machine part. The seal assembly includes at least one seal element that contacts the machine part or contacts a component connected with the machine part or that extends with a gap relative to the machine part or to the component connected with the machine part. At least one of the seal element, the machine part and the component connected with the machine part is provided or coated with a material, which has super hydrophobic properties, in the area of the seal element.

Abstract: A method and device are provided for sealing a first oil environment, which is located on a first side of a movable piston guided in a hollow chamber, from a second oil environment, which is located on a second side of the piston. The piston can move back and forth in the hollow chamber between the two oil environments in the axial direction by a piston stroke length (d). Two annular seal elements are disposed around the movable piston so as to sealingly contact the inner circumferential wall of the hollow chamber. The annular seal elements are spaced from each other by at least a distance (D) in the axial direction that is greater than or equal to the piston stroke length (d).

Abstract: A seal to seal a gap between a rotatable component (4, 18) and a non-rotatable component comprises: A fastening section adapted to be fixedly mounted in relation to the non-rotatable component, a sleeve-like section (3) adapted to be mounted around the rotatable component (4, 18), a resilient section (7) between the sleeve-like and fastening section comprising an arcuate portion (8), and in an unmounted condition, the sleeve-like section (3) has an inner diameter, DSEAL, with a predefined magnitude relative to an outer diameter of the rotating component, DSHAFT, such that 0.9?DSEAL/DSHAFT?1.1.

Abstract: A seal for a compressor for sealing a shaft comprises a first seal part with a sealing edge which is provided on a circular cylindrical surface along a line which deviates from a circular shape and which is closed in itself in the peripheral direction for adjoining and sealing the shaft, and a second seal part with a sealing section which is intended to adjoin the shaft and which is hollowly cylindrical when it adjoins properly with the inside surface which comprises a return structure for a fluid.

Abstract: A steering knuckle pin bearing assembly includes a bearing and a steering knuckle pin pivotably supporting a steering knuckle relative to an axle beam. A sealing collar seals a space between the bearing and the steering knuckle pin, which space may include a spacer washer. The sealing collar is slidably borne on a radial outer surface of the bearing. In addition, the sealing collar has at least one sealing region that is in slidable contact with an at least substantially cylindrical sealing surface of the axle beam.

Abstract: A seal for a compressor for sealing a shaft comprises a first seal part with a sealing edge which is provided on a circular cylindrical surface along a line which deviates from a circular shape and which is closed in itself in the peripheral direction for adjoining and sealing the shaft, and a second seal part with a sealing section which is intended to adjoin the shaft and which is hollowly cylindrical when it adjoins properly with the inside surface which comprises a return structure for a fluid.

Abstract: A method and device are provided for sealing a first oil environment, which is located on a first side of a movable piston guided in a hollow chamber, from a second oil environment, which is located on a second side of the piston. The piston can move back and forth in the hollow chamber between the two oil environments in the axial direction by a piston stroke length (d). Two annular seal elements are disposed around the movable piston so as to sealingly contact the inner circumferential wall of the hollow chamber. The annular seal elements are spaced from each other by at least a distance (D) in the axial direction that is greater than or equal to the piston stroke length (d).

Abstract: A sealing element is provided for placement between first and second components, wherein the first component includes a cylindrical cavity with a step-shaped shoulder which narrows the cavity, and the second component is a cylindrical component for placement in the cavity. The sealing element comprises a stiffening body with a L-shaped longitudinal cut surface, with the first leg of the L shape being provided extending between the jackets of the cavity and of the second component, and the second leg being provided essentially in the region of the shoulder extending between the two components and at least in partial regions for touching the shoulder and the end side of the second component.

Abstract: A seal assembly seals a first portion of a machine part relative to a second portion of the machine part. The seal assembly includes at least one seal element that contacts the machine part or contacts a component connected with the machine part or that extends with a gap relative to the machine part or to the component connected with the machine part. At least one of the seal element, the machine part and the component connected with the machine part is provided or coated with a material, which has super hydrophobic properties, in the area of the seal element.

Abstract: In a sealing arrangement sealing at least one axial end section of a hollow shaft that is arranged in a cavity of a component, with the hollow shaft being adapted to route a fluid, a gasket is adapted to be located between the component and the shaft. The gasket is made with a sealing lip to adjoin the outer peripheral surface of the end section. The gasket also includes an axially projecting portion that projects axially beyond the end of the shaft. The axially projecting portion of the gasket surrounds a device for filtering the fluid and/or a device for determining the flow cross-section of the fluid.

Abstract: A seal to seal a gap between a rotatable component (4, 18) and a non-rotatable component comprises: A fastening section adapted to be fixedly mounted in relation to the non-rotatable component, a sleeve-like section (3) adapted to be mounted around the rotatable component (4, 18), a resilient section (7) between the sleeve-like and fastening section comprising an arcuate portion (8), and in an unmounted condition, the sleeve-like section (3) has an inner diameter, DSEAL, with a predefined magnitude relative to an outer diameter of the rotating component, DSHAFT, such that 0.9?DSEAL/DSHAFT?1.1.

Abstract: A sealing element for sealing a shaft, which is provided for rotating in accordance with its design, at a through-opening of a housing part for the shaft, comprising the following features: a reinforcement part (2) and an elastomeric part (5) connected with the reinforcement part, the elastomeric part (5) comprises a first sealing region (10) for a static-sealing abutment on the housing part and the elastomeric part comprises a second sealing region (20) having a sealing segment (22) formed and provided for sealing abutment on the shaft, which sealing segment comprises a thread-like return structure for a return of a leaked fluid into a to-be-sealed space, and a free axial end in the sealing segment normally abutting on the shaft is formed with a closed line (26) in the circumferential direction and extending on a circular-cylinder surface, which line is provided for sealing abutment on the shaft at least when the shaft is not rotating.

Abstract: A steering knuckle pin bearing assembly includes a bearing and a steering knuckle pin pivotably supporting a steering knuckle relative to an axle beam. A sealing collar seals a space between the bearing and the steering knuckle pin, which space may include a spacer washer. The sealing collar is slidably borne on a radial outer surface of the bearing. In addition, the sealing collar has at least one sealing region that is in slidable contact with an at least substantially cylindrical sealing surface of the axle beam.

Abstract: A sealing element is provided for placement between first and second components, wherein the first component includes a cylindrical cavity with a step-shaped shoulder which narrows the cavity, and the second component is a cylindrical component for placement in the cavity. The sealing element comprises a stiffening body with a L-shaped longitudinal cut surface, with the first leg of the L, shape being provided extending between the jackets of the cavity and of the second component, and the second leg being provided essentially in the region of the shoulder extending between the two components and at least in partial regions for touching the shoulder and the end side of the second component.

Abstract: An arrangement for sealing a housing with a cover that includes a central hole for holding a gasket for a shaft extending through the gasket in the installed state, and at least first and second hollow-cylindrical protuberances which project roughly in the direction of the shaft relative to the areas of the cover which directly surrounds them. The protuberances are inserted into the corresponding cavities of the housing. The peripheral surfaces of the first protuberance and its respective cavity adjoin one another essentially without play, and the second protuberance can be essentially freely positioned within its cavity in the direction of a line which connects the two center points of the two protuberances, with the second protuberance adjoining at least one point of the peripheral surface of the cavity in the direction of the cavity diameter which is perpendicular to the line.

Abstract: A sealing element for sealing a shaft comprises a stiffening part, a first elastomer part connected to the stiffening part and adapted to adjoin the housing part and provide a static seal relative, and a second elastomer part of an elastomer material different from the elastomer material forming the first elastomer part. The second elastomer part is connected to the stiffening part and comprises a sealing section adapted to adjoin the shaft to seal a space. The sealing section comprises a return structure for returning a leaking fluid to a space to be sealed. The sealing section also comprises a region at one axial end portion of the sealing section which is peripherally closed in itself and extends along an inner surface of a circular cylinder portion of the sealing section that is adapted to adjoin and seal the shaft as the shaft is not turning.

Abstract: A seal for a compressor for sealing a shaft comprises a first seal part with a sealing edge which is provided on a circular cylindrical surface along a line which deviates from a circular shape and which is closed in itself in the peripheral direction for adjoining and sealing the shaft, and a second seal part with a sealing section which is intended to adjoin the shaft and which is hollowly cylindrical when it adjoins properly with the inside surface which comprises a return structure for a fluid.