CN201326469Y

CN201326469Y - Piston packing ring of engine

Info

Publication number: CN201326469Y
Application number: CNU200820100545XU
Authority: CN
Inventors: 李荣贵; 陈昌福; 罗尤勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-14
Filing date: 2008-11-14
Publication date: 2009-10-14
Anticipated expiration: 2018-11-14

Abstract

The utility model provides a piston packing ring of an engine, which relates to piston rings. The piston packing ring comprises an upper ring and a lower ring; the cross section of the lower ring is shaped like a right angle with an outward opening; the upper ring is mounted in the right angle opening of the lower ring; and the upper ring and the lower ring are in movable fit. The cross section of the upper ring is shaped like an inverted trapezium; the upper plane and the lower plane of the upper ring are parallel; the included angle between the inner wall of the upper ring and the upper plane of the upper ring is 85-89 degrees; and the included angle between the outer wall of the upper ring and the upper plane of the upper ring is 85-89 degrees. The piston packing ring of the engine improves the mechanical strength of a double-piece gas ring, strengthens the leak tightness of the combustion chamber of the engine, reduces the leakage of mixed gas, increases the compression ratio of the combustion chamber, improves the combustion effect of the mixed gas, improves the self lubricity of the gas ring, improves the thermal diffusivity of the piston, prolongs the service life of the gas ring, and is of popularization value.

Description

The engine piston seal ring

Technical field

The utility model relates to engine piston ring, more specifically relates to a kind of engine piston seal ring.

Background technique

Piston ring mainly divides compression ring and oil ring, the compression ring of installing on the existing internal combustion engine is most to be the monolithic compression ring, promptly in a compression, a slice compression ring is housed, the compression ring of installing on the internal combustion engine of only a few is the biplate compression ring, two compression rings promptly are housed in a compression, as Chinese patent was on July 2nd, 2008 in open day, notification number is CN 201080682, patent right number is 200720124864.X, name is called " a kind of motor dual-active plug ring piston assembly " disclosed technological scheme, and this dual-active plug ring piston assembly is equipped with two plain film piston gas rings in the compression of piston.The shortcoming that this scheme exists is: the one, and the opening sealing of compression ring is relatively poor, still has bigger gas leak phenomenon; The 2nd, the plain film piston gas ring is too thin, and mechanical strength is relatively poor, and is easily broken, causes the damage of cylinder, piston.For this reason, have much room for improvement.

Summary of the invention

The purpose of this utility model:, and provide a kind of engine piston seal ring for sealing and the using effect that improves the biplate compression ring.

The technical solution of the utility model is: a kind of engine piston seal ring, and its key is: it is made up of last ring and following ring, and the cross section of following ring is rectangular in shape, and the right angle opening is outside, and last ring is contained in down in the right angle opening of ring, and last ring and following ring are for movingly.

The described opening dislocation of going up ring and encircling down.

The described inwall end opening of going up ring is provided with the oil groove chamfering, and last ring encircles when being assembled together with following, on the right angle type oil circuit circlewise of the oil groove chamfering encircled and corresponding following ring.

Described oil groove chamfering is outside recessed circular arc.

The described cross section of going up ring is trapezoidal, and the last plane of last ring is parallel with lower plane, and the angle on the inwall of last ring and the last plane of last ring is 85～89 degree, and the angle on the outer wall of last ring and the last plane of last ring is 85～89 degree.

The beneficial effects of the utility model: engine piston seal ring of the present utility model has increased the mechanical strength of biplate compression ring, strengthened the sealing of engine chamber, reduce the leakage of mixed gas, improve the compression ratio of firing chamber, improve the combustion of mixed gas effect, improved the self-lubricity of compression ring, improved the thermal diffusivity of piston, prolong the working life of compression ring, had the value of pushing open.

Description of drawings

Fig. 1 is that piston packing ring of the present utility model is installed in the structural representation on the piston;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is the partial enlarged drawing among Fig. 1;

Fig. 4 is the structural representation of last ring;

Fig. 5 is the C-C sectional view after amplifying among Fig. 4;

The structural representation of Fig. 6 for encircling down;

Fig. 7 is the D-D sectional view after amplifying among Fig. 6.

Embodiment

The utility model is described in further detail below by embodiment.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Figure 7, a kind of engine piston seal ring, it is made up of last ring 2 and following ring 3, encircling 3 cross section down is rectangular in shape, the right angle opening is outside, on encircle 2 and be contained in down in ring 3 the right angle opening, on encircle 2 with ring 3 down for movingly; Described opening dislocation of going up ring 2 and following ring 3; The described inwall end opening of going up ring 2 is provided with oil groove chamfering 5, on encircle 2 when ring 3 is assembled together down, on encircle the right angle type oil circuit circlewise of oil groove chamfering 5 and corresponding following ring 3 on 2; Described oil groove chamfering 5 is outside recessed circular arc.The described cross section of going up ring 2 is trapezoidal, on to encircle 2 last plane 8 parallel with lower plane 9, on encircle 2 inwall 6 and the last plane 8 of last ring 2 angle be 85～89 degree, (angle on 2 the outer wall 7 and the last plane 8 of last ring 2 is 85～89 to spend to last the ring.Engine piston seal ring of the present utility model is installed in the compression of piston 1, and piston 1 is provided with piston pin hole 4.

Claims

1, a kind of engine piston seal ring, it is characterized in that: it is made up of last ring (2) and following ring (3), and the cross section of following ring (3) is rectangular in shape, and the right angle opening is outside, last ring (2) is contained in down in the right angle opening of ring (3), and last ring (2) and following ring (3) are for movingly.

2, engine piston seal ring according to claim 1 is characterized in that: the described opening dislocation of going up ring (2) and encircling (3) down.

3, engine piston seal ring according to claim 1, it is characterized in that: the described end opening of going up the inwall (6) of ring (2) is provided with oil groove chamfering (5), last ring (2) and following ring (3) be when being assembled together, the last right angle type oil circuit circlewise that encircles oil groove chamfering (5) and corresponding following ring (3) on (2).

4, engine piston seal ring according to claim 3 is characterized in that: described oil groove chamfering (5) is outside recessed circular arc.

5, engine piston seal ring according to claim 1, it is characterized in that: the described cross section of going up ring (2) is trapezoidal, the last plane (8) of last ring (2) is parallel with lower plane (9), the inwall (6) of last ring (2) is 85～89 degree with the angle on the last plane (8) of last ring (2), and the outer wall (7) of last ring (2) is 85～89 degree with the angle on the last plane (8) of last ring (2).