SU1332056A1 - Piston ring - Google Patents

Abstract

The invention relates to engine-building and allows improving the oil-grounding properties. The recess 3 is formed on the lower end 2 of the ring 1 and is formed by mating the inner and outer parallel conical walls. A series of non-contiguous radial samples 6 are made in the outer conical wall. At the bottom end 2, drainage grooves 7 are made along the axes of the conical samples 6. In this configuration, the ring 1 does not contact the sleeve 1 with the entire outer cylindrical surface. lower edge, which improves the condition of oil drainage from the cylinder liner. 2 hp f-ly, 2 ill. i (L

Description

This invention relates to mechanical engineering, in particular, to engine building.

The aim of the invention is to increase the oil scavenging properties.

Figure 1 shows the ring with the expander, the cut; figure 2 - view And figure 1.

The piston ring 1 (Figures 1 and 2) has on the bottom, counting from the combustion chamber, the end face 2, a recess 3, the axis of which 4 is inclined towards the outer cylindrical surface. Undercut 3 is formed by two parallel conical walls that are conjugated along a radius, the value of which is equal to half the distance between these walls. In the recess 3, an expander 5 is installed with a gap, which is in the form of a cylindrical spring. In the outer conical wall, with respect to the radius of the undercut 3, there are a series of non-contiguous between

Research Institute of pistons with a ring. Oil wiping properties of the ring are improved due to the torsion effect, in which the contact of RING 1 with the bushing is not carried out by the entire outer cylindrical surface, but only by the lower edge, while the conditions for removing oil from the cylinder bushing are improved by making 10 samples of 6 inclined. The engine oil removed by the lower edge of the ring during the piston stroke to the bottom dead center, over the surface 6 enters the cavity of the undercut 3, and then through the drainage slots 7 into the pinhole space and further

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Claims (3)

dumped into the crankcase. Invention Formula 2Q 1. A piston ring with a recess, containing an expander, made in the form of a cylindrical compression spring, and placed in the recess, characterized in that, in order to increase the conical samples 6, it has 25 oil drainage properties, which are retracted relative to the radius surface is made at the bottom end of the ring of the backbone of the undercut 3 and the cross section of the cross section facing the corner of the bottom end 2 or on the outer cylindrical surface of the ring 1. The bottom end 2 also has drainage slots 7 from the inner cylindrical surface of the ring 1 to the inner conical wall of the undercut 3, and the axis of the grooves 7 are located in the middle (along the axis of the m) of conical samples 6. Piston ring works as follows. When the ring 1 is compressed to its nominal diameter and installed in the cylinder sleeve of the engine, the elastic force of the ring itself and the compressed coil of the expander 5 press the ring against the surface of the sleeve, ensuring that excess oil is removed from this surface during reciprocating Research Institute of pistons with a ring. Oil wiping properties of the ring are improved due to the torsion effect, in which the contact of RING 1 with the bushing is not carried out by the entire outer cylindrical surface, but only by the lower edge, while the conditions for draining oil from the cylinder bushing are improved by making samples 6 inclined. The engine oil removed by the lower edge of the ring during the piston stroke to the bottom dead center, over the surface 6 enters the cavity of the undercut 3, and then through the drainage slots 7 into the pinhole space and further dumped into the crankcase. Invention Formula The working surface is formed of two parallel conical walls, internal and external, conjugated along the radius, and the expander is placed in the recess with a gap. 2. Ring POP.1, characterized in that a series of radial conical samples which are not in contact with each other are made in the outer conical wall with respect to the radius surface of the undercut. 3. Ring according to Claims 1 and 2, characterized in that radial drainage grooves along the axes of the conical samples are made at the lower end of the ring between the conical inner wall of the undercut and the inner cylindrical surface of the ring. View A (turned} FIG. 2 Compiled by A.Gladukikh Editor L.Langazo Tehred M, Dvdyk Proofreader G, Reshetnik Order 3784/31 Circulation 503 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4