SU1395846A1 - Piston compression ring for internal combustion engine - Google Patents

Abstract

The invention improves ring reliability by reducing friction forces. The recess 2 is made at least on one of the end surfaces 3 of the annular element (CZ) 1, and the insert 4 is made of a material coefficient. which damping is higher than the coefficient damping material KE. As an insert material, m. used nickel or copper-ammonium alloy. This embodiment increases the damping properties of the ring, especially in the area of the castle, and reduces the amplitude of oscillations of the FE. 1 3.p. f-ly, 6 ill.

Description

4f 3

WITH

with

SP

CX) 4

05

And the celebration relates to mechanical engineering, in particular to engine-transmission, mainly to compression rings for internal combustion engines and piston compressors.

The aim of the invention is to increase reliability by reducing friction forces.

FIG. 1 shows a ring with a joint on one of the face surface; Cross-section; in fig. 2 - then ha ha of both end surfaces, cross section; in fig. 3 - ring with a solid insert throughout the perimeter; in fig. 4 is a section A-A in FIG. 3; in fig. 5 ring with insert-1sami at the lock on the arc d; in fig. 6 is a section BB in FIG. five.

The piston compression ring holds the ring element 1 with the undercut ikoii 2 on the end surface 3, 1, the rate 4, secured in the undercut 2, rt lock 5. The ring element 1 with the Insert 4 is installed in the groove 6 of the opening 7 placed in the cylinder 8, the mirror 9 of the cylinder 8 contacts q with the outer cylindrical surface 10 of the annular element 1. B | rate 4 is made of a material with a high coefficient / 3 of damping.

: As a material with high: d | emulsifying properties, iron-nickel or ammonium alloys can be used.

j The piston ring can be supplied with 1 insert 4- in the undercut 2 of the annular element 1 on one of the end surface 3 (Fig. 1) or two inserts 4 in the undercut 2 of the ring e-element 1- on both end surfaces 3 (Fig. 2).

The insert can be located around the perimeter of the ring element

ty 1 (fig. 3 and 4) or in the form of sections

7TG

four/

0

d

five

0

five

0

five

on an arc with / 90, spaced (, 1x simm (trichesky on both sides of the lock 5 of the ring element 1 (Fig. 5 and 5)).

When the ring is in operation, the gases from the combustion chamber that break through through the lock 5 excite transverse oscillations in the ring element 1, the amplitude and frequency of which depend on the damping properties of the ring in the area of the lock 5. The placement of the insert 4 made from a material with high damping properties increases the damping properties of the ring, especially in the area of the lock 5j and reduces the oscillation amplitude of the ring element 1. This occurs with a significant reduction in friction losses.

Claims (2)

1. A piston compression ring for an internal combustion engine, mounted in a piston groove placed in a cylinder for reciprocating movement, comprising an annular element with a recess and a lock, and an insert disposed in the recess of an annular element, the insert and the annular element made of A dissimilar material, characterized in that, in order to increase reliability by reducing friction forces, the undercut is made on at least one of the end surfaces of the annular element, and the insert made of a material whose damping coefficient is higher than the damping coefficient of the material of the annular element. 2. The ring according to claim 1, distinguishing it from the fact that iron-nickel or copper-ammonium alloy is used as the insert material. t.fe2 L A Fig 5 2. FIG. 6