SU726388A1 - Piston oil ring - Google Patents

Description

The invention relates to internal combustion engines.

A piston oil scraper ring is known for an internal combustion engine with scrapers on the working surface and inclined drainage windows having side and upper walls, the outer edges of which are located above the edge of the scraper. Drainage windows are designed to drain oil from under the rings, which is removed when the piston moves from the cylinder walls, and, depending on the design features of the ring, drainage windows may or may not have a lower wall, which, if present, can also be made inclined for improved drainage oil

A disadvantage of the known rings is the rather complicated manufacturing technology of the outer, scraper part of the ring at the place of its conjugation with the inclined drainage windows, which substantially increases the cost of manufacturing the rings. ''

The aim of the invention is to simplify the manufacturing technology of oil scraper rings.

'The goal is achieved by changing the geometric characteristics and the relative position of the outer faces and scrapers of the ring and is carried out by choosing the appropriate angle of inclination of the upper wall. For this, the angle of inclination of the upper walls is made in accordance with 15 with the equation:

xs'inM ¹ - vcosV-Q axis X is directed but to the radius of the ring, to the center / axis Y is directed along the generatrix of the ring;

the angle of inclination of the upper wall of the windows, measured from the X axis and varying within 90 °>> О;

Q is a constant determined by the geometric characteristics of the ring.

In FIG. 1 shows the relative position of the ring elements and coordinate axes necessary for constructing the geometric outlines (profiling) of the ring) in FIG. 2 - in the same coordinates shows an embodiment of the proposed ring in the presence of the lower walls of the drainage windows; in FIG. 3 is an embodiment of a ring design with inwardly expanding windows; in FIG. 4 - modification of the ring with two rows of slanted windows and corresponding coordinates.

A piston oil scraper ring, for example, for an internal combustion engine, is made with scrapers 1 on the working surface and inclined drainage windows 2 with side 3 and upper 4 walls, the outer edges 5 of which are located above the edge 6 of the scraper. The upper wall 4 of the drainage windows 3 is made in accordance with the equation: xslnMi - vcosЧ> - Q = О, where

V along the radius along the form 35 axis X is directed to the center of the ring;

Y axis of the directed ring;

the angle of inclination of the upper wall of the windows, measured from the X axis and varying within 90 °> H ’> O 'is a constant value determined by the geometry of the ring.

The ring works as follows. When the ring with the piston moves, the scraper 1 removes oil using the edges 6 and through the inclined drainage windows 2 bounded by the upper 4 and lower walls, immediately direct it past the outer faces 5 of the scraper into the oil drain holes in the piston. Thus, due to the relative positioning of the inclined holes and the scrapers, the simplification of the manufacture of the 'rings and efficient oil removal due to the radial component of the inertia of the moving oil column is ensured.

In particular, when describing the relative position of the drainage windows and the ring scrapers during the manufacturing of the upper Window Walls, for example using a cutting tool, the edges of the scraper remain unaffected, and therefore, additional mechanical processing of the rings is not required. At the same time, when the angle of inclination of the upper walls is performed in accordance with the above equation, the external faces are located above the scraper (or at the same level with it) and the oil is drained from under it 'immediately as it is removed, and the radial component will contribute to its removal inertia forces of the mass of oil directed inward.

Claims (1)

(54) PISTON AND MILK RING and change within 90 °; Q is a constant value determined by the geometric characteristics of the ring. In FIG. Figure 1 shows the mutual arrangement of the ring elements and coordinate axes necessary for building geometric outlines (ring profileJ in Fig. 2 — the same coordinate shows an embodiment of the proposed ring in the presence of the bottom walls of the drainage windows; 4 are a modification of the ring with two rows of inclined windows and the corresponding coordinates. The piston ring removal ring, for example, for an internal combustion engine, is filled with scrapers 1 per slave The surface of the eyes and the inclined drainage windows 2 are with side 3 and top 4 walls, the outer faces of which 5 are located above the edge of the scraper B. The upper wall of the 4 drainage windows 3 is completed according to the equation: - vcosV -QO ; axis Y of the directionally forming ring; If - the angle of inclination of the upper wall of the windows, measured from the axis X and varying within О Q - a constant value determined by the geometry of the ring. The ring works as follows. When the ring with the piston is moving, the scraps 1 are removed using the edges 6 of the oil and through the inclined drainage windows 2 bounded by the upper 4 and lower walls, they are immediately guided past the outer edges 5 of the scraper to the holes to drain the oil in the piston . Thus, due to the mutual arrangement of the inclined holes of the scrapers, the manufacture of the rings and the effective oil drainage are simplified due to the radial component of the inertia force of the moving oil column. In particular, when the mutual arrangement of drainage windows and ring scrapers in the process of manufacturing the upper walls of windows, for example using a cutting tool, the edges of the scraper remain unaffected due to which additional mechanical processing of the rings is not required. However, when making the angle of inclination of the upper walls in accordance with the above equation, the outer edges are located above the scraper (or at the same level with it) and oil is drained from under it immediately as it is removed, and its removal will be facilitated by the radial component the forces of inertia of the mass of oil directed inwards. The invention of the piston oil ring, for example, for an internal combustion engine, with scrapers on the working surface and inclined drainage windows with side and top walls, the outer edges of which are located above the edge of the scraper, which is In order to simplify the manufacturing technology, the angle of inclination of the upper wall is made in accordance with the equation: X atC - vcos -G | .0. where X is directed along the radius of the ring to the center; Y axis - directed along the generator of the ring; H is the angle of inclination of the upper wall of the windows, measured from the X axis and varying within O; Q - constant veggie. Sources of information taken into account in the examination 1. Patent. France № 771О02, .kl. 46c, 1Q, publ. 1934. FIG. 2 Rig.Z  FIG L