CN1205393A

CN1205393A - Combined long service, high air tight piston ring and I. C. engine made therefrom

Info

Publication number: CN1205393A
Application number: CN 97114418
Authority: CN
Inventors: 姜牧
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-12
Filing date: 1997-07-12
Publication date: 1999-01-20

Abstract

A high-airtight combined piston ring with long service life and the IC engine made up with it are disclosed, which features that the air tightness of cylinder is not getting poor when the piston ring is wearing, so the IC engine can work in better condition for a long time.

Description

Combined type longevity, high-air-tightness piston ring and with the internal-combustion engine of its manufacturing.

The invention belongs to mechanical technique.

The tightness of cylinder of internal-combustion engine has a strong impact on its service behaviour, the design philosophy of traditional piston ring has caused the necessity of its gas leakage, constantly the opened gap that increases is the principal element that causes gas leakage, bubble-tight deterioration makes engine consumption increase, power character degenerates, oil mixeds etc., the replacing process of piston ring also just mean the cycle period that engine performance constantly worsens.

The objective of the invention is to solve the deficiency of prior art, the bigger raising piston ring life-span, from having overcome the gas leakage defective of piston ring in essence, thereby brought into play the performance of motor to greatest extent.

Characteristics of the present invention are that the tightness of cylinder changes with the wearing and tearing of ring hardly, and compression ring keeps best airtight conditions always, and the life-span of ring can prolong more than 2 times.

Key problem in technology of the present invention is that the mismatch combination and the airtight filler ring of utilization ring after rational design and cooperation, have thoroughly solved the gas leakage problem of compression ring opening.

Below the invention will be further described with regard to several preferred embodiments:

(figure one) A type longevity, high-air-tightness piston ring structure schematic representation

(figure two) Type B combined type, high-air-tightness piston ring structure schematic representation

(figure three) C type combined type, high-air-tightness piston ring structure schematic representation

(figure four) D type combined type, high-air-tightness piston ring structure schematic representation

(figure five) E type combined type, high-air-tightness piston ring structure schematic representation

Shown in (figure one): the opening two ends of ring (3) are processed with protruded stigma (1) and can hold the short slot (2) of protruded stigma (1).After ring (3) is put into cylinder, the interior section (10) of short slot (2) short slot that the protruded stigma (1) at ring opening two ends embeds offside can be an arbitrary surface, because the sidewall (4) of ring and the airtight effect of piston ring groove sidewall (5), thereby the increase of wearing and tearing back ring opened gap can influence tightness hardly.

Shown in (figure two): the associative ring that constitutes by main ring (6) and inner loop (7), have short slot (8) at the one-sided or bilateral of main ring (6), inner loop (7) embeds in the short slot, and opening of each ring can stagger mutually.Main ring, inner loop are used for same piston ring groove.

Shown in (figure three): being provided with in piston ring groove is transversely arranged more than 2 or 2, staggers mutually, has the subring (18) of radial overlap interface (9).Radially put connection interface on the skin and be meant that the sideline (30) of faying surface (overlap joint surface of contact) (11) is on the two side (12) of subring (10).(also can be that a sideline is on sidewall)

Shown in (figure four): the opening of subring (13) staggers mutually, and subring can be more than 2 or 2, and the opening of airtight filler ring (14) also staggers with subring.The surface of contact of airtight filler ring and subring closely cooperates, and this is different from the grommet on the traditional concept, has tightness after the combination.Subring and airtight filler ring are placed in the same piston ring groove.

Shown in (figure five): this Combined gaseous ring, to form by apical ring (15) and airtight filler ring (16), apical ring (15) has axial overlap joint interface, and the opening of apical ring and airtight filler ring staggers mutually, and surface of contact has tightness.

With upper piston ring and associative ring again within it side be used for increasing its tightness by elasticity grommet in addition.

Note:

1, the section (10) in [figure one] refers to the dash area in the opening short slot that encircles among the finger figure.

2, the short slot in [figure two] refers to the space of the cell body part of being opened on the main ring (3) that can hold inner loop (7).

3, the sidewall of piston ring groove refers to, the part that can arrive with two contacts side surfaces of piston ring of being processed on piston (two apparent surfaces in " gap, limit " of common indication just), the sidewall of piston ring groove cooperates airtight degree with the side of ring also be the bubble-tight important composition of cylinder block.

4, the present invention has also provided a kind of filler ring Sealing Method of piston ring, the airtight filler ring of being given, with traditional (elastic force) grommet, all variant in profile and function, airtight filler ring, not only can provide certain elastic force, the more important thing is the gap portion that has played the opening that seals subring (figure four) and apical ring (figure five) at least.This just requires that good matching surface is arranged between airtight filler ring and the outer ring, and especially the open part at each ring requires surface of contact closely to contact.

Claims

1, A type longevity, the high-air-tightness piston ring, its feature just is that the opening two ends of encircling are processed with protruded stigma and can hold the short slot of protruded stigma.

2, Type B combined type longevity, the high-air-tightness piston ring, its feature just is, at the bilateral or the one-sided short slot that has of main ring; In the sub-short slot of inner loop embedding, main ring and inner loop place same piston ring groove.

3, C type combined type longevity, the high-air-tightness piston ring, its feature just is to be placed with in same piston ring groove and transversely arranged staggers mutually, has 2 or 2 above subrings of radial overlap interface.

4, piston ring as claimed in claim 3, its feature just are that the sideline of the overlap joint surface of contact of described radial overlap interface has one at least on the sidewall of subring.

5, D type combined type longevity, the high-air-tightness piston ring is characterized in that, is placed with the subring more than 2 or 2 and the airtight filler ring of subring inboard in same piston ring groove.

6, as piston ring as described in the claim 5, its feature just is to closely cooperate between described airtight filler ring and subring, has tightness.

7, E type combined type longevity, the high-air-tightness piston ring, its feature just is, is placed with airtight filler ring in the apical ring inboard that has axial overlap joint interface.

8, as piston ring as described in the claim 7, its feature just is that apical ring and airtight filler ring closely cooperate, and have tightness.

9, a kind of high-air-tightness internal-combustion engine, by the high-air-tightness piston ring, piston, compositions such as cylinder body, its feature just is to be placed with A, B, C, D, E type (combined type) longevity, high-air-tightness piston ring in the piston ring groove of internal-combustion engine.

10, a kind of filler ring airtight method of piston ring is made of airtight filler ring subring or apical ring in the same piston ring groove that is placed on the piston, and its feature just is, airtight filler ring closely cooperates at least with near the open part of subring or apical ring, and surface of contact closely contacts.