摘要:
Kolbenringanordnung (40) mit einem sich um eine Hauptachse (X) erstreckenden Kolbenring (50), wobei der Kolbenring (50) eine radial nach außen gerichtete Dichtfläche (58) und eine radial nach außen gerichtete Anlagefläche (55) aufweist, wobei die Dichtfläche (58) radial außerhalb von der Anlagefläche (55) angeordnet ist. Zur Verbesserung der Standzeiten von Kolbenringen für Kolbenkompressoren weist die Kolbenringanordnung (40) einen sich um die Hauptachse (X) erstreckenden Haltering (70) mit einer radial nach innen gerichteten Haltefläche (72) auf, wobei der Kolbenring (50) und der Haltering (70) so angeordnet sind, dass die Haltefläche (72) und die Anlagefläche (55) in radialer Richtung benachbart angeordnet sind.
摘要:
An annular seal flange (87) is formed at an inner peripheral edge portion of an upstream-side seal ring (83). The seal flange (87) projects in a downstream direction. When seal rings (83, 85) are viewed from radially inside, the seal flange (87) of the upstream-side seal ring (83) is designed to at least partially occlude an end gap (85f) of the downstream-side (the most downstream-side) seal ring (85).
摘要:
The present invention relates to a seal unit (10) suitable to be inserted in the first groove (20') of a piston (20) of an internal combustion engine. The seal unit 10 according to the invention comprises a first ring-shaped body (10') which defines a first cut section (12') and a second ring-shaped body (10") which defines a second cut section (12"). According to the invention such bodies are overlapping so that the position of said first section (12') is different from the position of said second section (12") in relation to a reference axis (101) to which the two bodies (10',10") are coaxial.
摘要:
In the case of a multi-part oil scraper ring (10) for internal combustion engines, having a U-shaped expanding-spring ring (1), which is provided with axial indentations (2), for forming radially outwardly aligned resilient limbs (3, 4) which are connected to one another by means of radially inwardly situated webs (5), and having at least two annular lamellae (7, 8) which are provided with in each case parallel flanks (7a, 7b; 8a, 8b) and are stacked via their flanks as stacking planes (SE) to a height (hL) and are arranged between the resilient limbs of the expanding-spring ring in order to define a nominal height of the oil scraper ring, according to the invention, an at least three-part oil scraper ring of a minimum axial installation height and with an improved oil-scraping effect should be obtained in that at least in each case one of the flanks (7a, 7b; 8a, 8b) of the lamellae has, in its radially inwardly situated wall region, a cut-out (11) which has a support face (12) for the engagement of the resilient limbs (3, 4) of the expanding-spring ring and is shaped such that the nominal height of the oil scraper ring is determined exclusively by the stack height (hL) of the lamellae (7, 8).
摘要:
Disclosed is a packing seal for the piston of a reciprocating engine. Said packing seal can be inserted into a circumferential groove of the piston and is provided with three segment rings (10, 20, 30) that adjoin each other in an axial direction, i.e. a second (lower) segment ring (10), a first (top) segment ring (20) thereabove, and a conical pressure securing ring (30) above the first segment ring (20). The second (lower) segment ring (10) is characterized in that the ends of the seal segments (11) and the lock parts (12) which adjoin each other in the peripheral direction radially engage behind one another in a hook-like manner, the seal segments (11) being provided with an inward-pointing hook (13) and the lock parts (12) being equipped with an outward-pointing hook (14). Furthermore, the contact lines (16) of the adjoining segments (11, 12) lying in the (engaging) contact areas (15) extend radially in the direction of the central axis of the ring in such a way that the directions in which the partial forces of the applied individual segment forces, which are compensated perpendicular to the contact line (16), are effective are oriented in the opposite direction, thus decreasing the pressure applied to the cylinder wall as a whole by the seal segment (11) and therefore substantially reducing wear.
摘要:
An object of the invention is to obtain a similar side sealing effect to what would be obtained when a means for cutting a ring corner angled portion for improvement of side sealing is used for a compression ring (1) having a special abutment comprising a projecting portion (2) provided in an upper corner angled portion of one of abutment end portions and a recessed receiving portion (3) provided in the other abutment end portion for receiving the projecting portion without using the same means and to enlarge the cross-sectional area of the projecting portion (2). To this end, grooves (14, 15) are formed in an inner circumferential surface (16) of a compression ring (11) in such a manner that centers of those grooves are positioned above a transverse center of the ring. Since the necessity of inner cutting is obviated, it is possible to enlarge the cross-sectional area of a projecting portion (12).