CN1065129A

CN1065129A - The gapless piston ring of inclined-plane lapping ring end

Info

Publication number: CN1065129A
Application number: CN 91106650
Authority: CN
Inventors: 欧阳而顺
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-03-18
Filing date: 1991-03-18
Publication date: 1992-10-07

Abstract

The gapless piston ring of inclined-plane lapping ring end.On the ring body (4) two ring end is the inclined-plane lapping, and the lapping inclined-plane can be the diagonal inclined-plane of ring body thickness direction, also can be on P angle and the following mating face line inclined-plane of a bit, also can be on the E face any with following mating face on any line inclined-plane.It is that zero-clearance seals that the present invention is subjected to the last plane of gas pressure, and lapping port (6) is located can effectively prevent gas leakage into the sealing of inclined-plane zero-clearance, increase work efficiency, and can reduce detonation gas and enter the piston lower square box, reduce oil pollution, and simple in structure, processing and fabricating is convenient.

Description

The gapless piston ring of inclined-plane lapping ring end

The piston ring that the present invention relates to use on the piston.

Announce December 12 nineteen ninety, notification number is that 2067321U, application number are 90208346.5 patent application document, has put down in writing a kind of " part lapping formula otch piston ring ".For there is good sealing effect at the two ring end interface places that make piston ring, this piston ring adopts part rectangular lapping formula structure, sees Fig. 1, Fig. 2.One end of this piston ring has a plush copper (1) of stretching out along external diameter, and the other end has a groove (2) that matches with this plush copper, and plush copper and groove are cuboid shape, and plush copper is inserted groove and become the part lapping.Because ring body expands with heat and contract with cold, and need leave port (3) in the ring end termination of lapping, the piston ring that the sealing effect of this piston ring leaves otch is good, but the still port of lapping leakage never of pressed gas.

The gapless piston ring that the purpose of this invention is to provide a kind of inclined-plane lapping ring end, the ring end of this piston ring adopts the inclined-plane lapping, and the port for flexible usefulness is left in the ring end end of lapping, and this port still is the zero-clearance sealing, and pressed gas can not leak thus.

Technological scheme is as follows:

Fig. 3 is a plan view of the present invention, and Fig. 4 is the stero shape figure at lapping place, and Fig. 5 is the B-B zoomed-in view of Fig. 4 and Fig. 3, and four angles on ring body (4) cross section are represented with P, Q, M, N respectively; The E face is and the contacted sealed friction surface of casing wall, and the D face is the interior mating face of ring body, and the H face is mating face down, and the aero operating pressure face is with " ↓ " expression.

Specifying Fig. 4 is the specification digest accompanying drawing.

The solution of the present invention is, the lapping face of the ring of two on the ring body (4) end is inclined-plane (5), and the projection plane on this inclined-plane is the sealing plane of ring body thickness direction, even the port (6) at the ring end is located, still,, can effectively prevent gas leakage referring to Fig. 3, Fig. 5 for the zero-clearance sealing.When the E face is worn, because the two ring ends at lapping place are worn equally.Therefore, in the permitted value of mechanical dimension, still be the zero-clearance sealing.

The present invention will be further described in conjunction with the embodiments.

Embodiment 1.Embodiment 1 presses Fig. 3, Fig. 4, structure fabrication shown in Figure 5.The inclined-plane of present embodiment (5) is P, line inclined-plane, N angle, and the piston ring external diameter is 200 millimeters, 184 millimeters of internal diameters, thick 6 centimetres.

Embodiment 2.Embodiment 2 presses Fig. 3, Fig. 4, structure fabrication shown in Figure 6.The inclined-plane of present embodiment (5) is the line inclined-plane that G is ordered on P angle and the H face.The G point of this moment to the size at N angle should be less than the depth dimensions of mounting groove on the piston, to satisfy the zero-clearance sealing of ring body thickness direction.Because pressed gas produces pressure to ring body, GN face and whole H face form wiper seal, can play better seal action, more effectively prevent to be leaked thus by the gas that interior mating face D leaks.Present embodiment G point to N angle is of a size of 1 millimeter, and other are with embodiment 1.

Embodiment 3.Embodiment 3 presses Fig. 3, Fig. 4, structure fabrication shown in Figure 7.The inclined-plane of present embodiment (5) is the G point line inclined-plane on K point and the H face on the E face, and this moment, the G point cun should be less than the depth dimensions of piston mounting groove to the N angle square, and from the mechanical strength angle, the size of ordering to K in the P angle is no more than 1/2nd of ring body thickness.This structure can realize the zero-clearance sealing equally.G point to the N angle of present embodiment is of a size of 1 millimeter, orders to K and be of a size of 0.5 millimeter in the P angle, and other are with embodiment 1.

The present invention adopts inclined-plane lapping structure, realizes the zero-clearance sealing, can effectively prevent gas leakage, improves engine operation efficient, and can reduce detonation gas and enter the piston lower square box, reduces oil pollution, and simple in structure, and processing and fabricating is convenient.

Claims

1, the gapless piston ring of a kind of inclined-plane lapping ring end is characterized in that the ring of two on the ring body [4] end lap face is inclined-plane [5], and described inclined-plane is:

2,, it is characterized in that described inclined-plane (5) is P, line inclined-plane, N angle on the ring body cross section according to the described gapless piston ring of claim 1.

3, according to the described gapless piston ring of claim 1, it is characterized in that described inclined-plane (5) is the G point line inclined-plane on P angle on the ring body cross section and the H face, the G point is to the size at the N angle depth dimensions less than the piston mounting groove.

4, according to the described gapless piston ring of claim 1, it is characterized in that the line inclined-plane of ordering for the E face K point on the ring body cross section and H face G in described inclined-plane (5), the G point is to the size at the N angle depth dimensions less than the piston mounting groove, and P angle to K spot size is no more than 1/2nd of ring body thickness.