CN2047308U

CN2047308U - Built-up air ring

Info

Publication number: CN2047308U
Application number: CN 89212304
Authority: CN
Inventors: 刘安民
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-30
Filing date: 1989-03-30
Publication date: 1989-11-08

Abstract

The utility model relates to a built-up air ring which is arranged at the piston of an internal combustion engine, comprising an upper ring, a lower ring and a spacing ring. The utility model can not only solves the problems of oil swapping and gas swapping of the motor and guarantee the power performance and economy of the motor to extend the service life of the motor, but also has the advantages of simple structure, convenient processing and easy installation.

Description

Built-up air ring

The utility model relates to a kind of combined gas ring that is installed on the explosive motor piston.

Every of the general employing of compression ring on the existing internal combustion engine piston is installed in respectively in the corresponding annular groove, and opening staggers mutually to guarantee its sealability.But in use, the cylinder sleeve of engine internal diameter increases because of wearing and tearing, and the external diameter of piston gas ring reduces because of wearing and tearing, and compression ring elastic force decreases, at this moment, under the pressurized gas effect of engine chamber, the opening of several compression rings can align gradually, therefore, compressing and breaking out in two strokes, a large amount of gases will seal in crankcase through opening, and in intake stroke, the lubricant oil on the casing wall also can be inhaled into the firing chamber.In addition, in the outburst stroke, the high pressure that is produced in the firing chamber can make compression ring side and piston ring groove with matching produce wearing and tearing and cause sideshake to increase, and like this, the lubricant oil on the casing wall just seals in the firing chamber by the compression ring sideshake through back clearance easily.When producing serious string oil in the motor and collaborate phenomenon, the power character of motor, Economy will reduce significantly, make the deterioration of lubricant in the crankcase simultaneously and further aggravate wearing and tearing between the part.

The purpose of this utility model is to avoid existing deficiency in the above-mentioned prior art and proposes a kind of combined gas ring, and it not only can solve the string oil problem of collaborating, and simple in structure, processing, easy for installation.

Combined gas ring provided by the utility model, it has on the spacer ring to connect with the inserting of upper and lower ring opening respectively by being contained in last ring, the spacer ring in the engine piston annular groove and encircling down and form, and the stopping projection of the several angle of being separated by on circumference.

Spacer ring of the present utility model can snap in the interior increase groove of piston ring groove, and two stopping projections become 180 ° of angles to arrange in a circumferential direction on it, and protrusion direction is opposite.

When engine operation after a period of time, the piston cylinder internal diameter increases because of wearing and tearing, snap ring reduces because of wearing and tearing on the piston, the elastic force of ring also reduces thereupon, at this moment since spacer ring on stopping projection respectively with last, under encircle the opening inserting and connect, limited relatively rotating of two rings, its opening can't be alignd, like this, gas from last ring opening string goes out will be hindered by encircling down, in addition, because the effect of spacer ring, in compression and outburst stroke, the pressurized gas on piston top enter the ring back side from sideshake, have both increased the elastic force of last ring, its sealing is not subtracted, hindered by spacer ring and can't go here and there out.On the other hand, because the setting of spacer ring also makes the lubricant oil that enters down the ring back side can't seal in the firing chamber because of spacer ring hinders.Therefore, combined gas ring of the present utility model has solved the swap oil problem of collaborating in the internal combustion engine, has guaranteed that motor (compression ring fracture before) in the whole spreadable life keeps original power character, Economy, has prolonged the working life of motor, and simple in structure, processing, installation are easily.

Accompanying drawing has provided an embodiment of the present utility model.

Fig. 1 is the utility model erection drawing.

Fig. 2 is the utility model spacer ring plan view.

Fig. 3 is Fig. 2 A-A sectional view.

Referring to Fig. 1, combined gas ring of the present utility model is made up of go up ring 2, spacer ring 3 and the following ring 4 that are contained in the engine piston annular groove.Spacer ring snaps in the increase groove in the piston ring groove, and its opening adopts interlock to connect (as shown in Figure 2), is squeezed when preventing work and opens.Have on the spacer ring respectively to connect, and the stopping projection 5(that 180 ° of angles of one-tenth are arranged on the fillet direction is as shown in Figure 3 with the inserting of upper and lower ring opening), can limit relatively rotating between the upper and lower ring by stopping projection.Last ring adopts rectangular ring, and following ring adopts the common ring that outer chamfering is arranged, and two ring thicknesses do not break into principle when working, reduce thickness as far as possible, thereby reduce motional inertia, the width of spacer ring does not exceed the annular groove top after should guaranteeing to be installed on the piston, to prevent producing friction with cylinder sleeve.

Claims

1, a kind of combined gas ring that is installed on the explosive motor piston, it is characterized in that it by be contained in last ring in the piston ring groove, spacer ring and down ring form, have on the spacer ring to connect with the inserting of upper and lower ring opening respectively and the stopping projection of the several angle of on circumference, being separated by.

2, according to the described combined gas ring of claim 1, it is characterized in that spacer ring snaps in the interior increase groove of piston ring groove, two stopping projections become 180 ° of angles to arrange in a circumferential direction on it, and protrusion direction is opposite.

3,, it is characterized in that the spacer ring opening adopts interlock to connect according to the described combined gas ring of claim 2.

4,, it is characterized in that spacer ring is contained in that its width does not exceed the annular groove top on the piston according to claim 2 or 3 described combined gas rings.

5, according to the described combined gas ring of claim 4, it is characterized in that ring adopts rectangular ring, following ring adopts the common ring that outer chamfering is arranged.