CN215521084U

CN215521084U - Small hole step cast iron oil ring

Info

Publication number: CN215521084U
Application number: CN202121762329.3U
Authority: CN
Inventors: 邓章礼; 王四春
Original assignee: Changsha Zhengyuan Power Technology Co ltd
Current assignee: Changsha Zhengyuan Power Technology Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-01-14
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to the technical field of oil rings and discloses a small-hole step cast iron oil ring. The oil scraping edge is step-shaped, the oil scraping edge is narrow, the contact area with the cylinder sleeve is small, the oil scraping capacity is high, the friction loss and the engine oil consumption can be reduced, the requirements of a low-emission engine on the structure of the piston ring oil ring are met, the number of the oil holes is large, the area of the oil holes is small, the strength of the piston ring is high, the piston ring is not prone to fracture, and the adaptability to the cylinder sleeve and the deformation shape of the cylinder sleeve is high.

Description

Small hole step cast iron oil ring

Technical Field

The utility model relates to the technical field of oil rings, in particular to a small-hole step cast iron oil ring.

Background

When the engine runs, the deformation of the cylinder sleeve has a great influence on the oil consumption. The deformation of the cylinder liner is inevitable due to the fastening force of the cylinder head bolt and the influence of heat, and the larger the deformation degree of the cylinder liner is, the higher the oil consumption is, so the following capability of the oil ring to the deformation of the cylinder liner is very important.

However, the existing oil scraping edge is a cylindrical surface, is wide, has large contact area with a cylinder sleeve, has poor oil scraping capacity and large friction loss. The oil holes are long strips, the number of the oil holes is small, the area of the oil holes is large, the strength of the ring is low, the ring is easy to break, the oil holes are large, when the end face is ground, the oil holes are stepped, the end face of the ring is uneven, oil is easy to blow, and the consumption of engine oil is high. Accordingly, those skilled in the art have provided small bore stepped cast iron oil rings to solve the problems set forth in the background above.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a small-hole step cast iron oil ring to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the small-hole step cast iron oil ring comprises an intermediate ring, wherein an upper fixing ring is integrally mounted on the upper surface of the intermediate ring, a lower fixing ring is integrally mounted on the lower surface of the intermediate ring, fixing through holes are formed in the intermediate positions of the upper fixing ring, the intermediate ring and the lower fixing ring, oil scraping edges are formed in the upper surface of the upper fixing ring and the lower surface of the lower fixing ring, grooves are formed in the intermediate positions of the upper fixing ring, the intermediate ring and the lower fixing ring, and oil holes are formed in the outer portion of the intermediate ring.

As a still further scheme of the utility model: the upper fixing ring and the lower fixing ring are the same in size and shape, and the width of the oil scraping edge is at least 0.25 mm.

As a still further scheme of the utility model: the oil scraping edge is arranged in a step shape.

As a still further scheme of the utility model: the number of the oil holes is at least thirty six, and the diameter of the oil holes is at least 0.8 mm.

Compared with the prior art, the utility model has the beneficial effects that: the oil scraping edge is step-shaped, the oil scraping edge is narrow, the contact area with the cylinder sleeve is small, the oil scraping capacity is high, the friction loss and the engine oil consumption can be reduced, the requirements of a low-emission engine on the oil ring structure of the piston ring are met, the number of the oil holes is large, the area of the oil holes is small, the piston ring is high in strength and not prone to fracture, the adaptability to the cylinder sleeve and the deformation shape of the cylinder sleeve is high, and the sealing performance is good.

Drawings

FIG. 1 is a schematic structural view of a small bore stepped cast iron oil ring;

FIG. 2 is a cross-sectional view of the oil scraping edge of the small bore stepped cast iron oil ring;

FIG. 3 is a top view of an upper retainer ring in the small bore stepped cast iron oil ring.

In the figure: 1. an upper fixing ring; 2. an oil hole; 3. a lower fixing ring; 4. a fixing through hole; 5. scraping oil edges; 6. an intermediate ring; 7. and (4) a groove.

Detailed Description

Referring to fig. 1 to 3, in the embodiment of the present invention, the small-bore stepped cast iron oil ring includes an intermediate ring 6, an upper fixing ring 1 is integrally installed on an upper surface of the intermediate ring 6, a lower fixing ring 3 is integrally installed on a lower surface of the intermediate ring 6, fixing through holes 4 are formed at intermediate positions of the upper fixing ring 1, the intermediate ring 6 and the lower fixing ring 3, oil scraping edges 5 are respectively disposed on an upper surface of the upper fixing ring 1 and a lower surface of the lower fixing ring 3, the upper fixing ring 1 and the lower fixing ring 3 have the same size and shape, the oil scraping edges 5 have a width of at least 0.25mm, the oil scraping edges 5 are arranged in a stepped manner, an outer portion of the oil scraping edge 5 contacts with a wall of an engine cylinder casing, grooves 7 are formed at intermediate positions of the upper fixing ring 1, the intermediate ring 6 and the lower fixing ring 3, oil holes 2 are formed at an outer portion of the intermediate ring 6, and the number of the oil holes 2 is at least thirty-six, the diameter of the oil hole 2 is at least 0.8mm, the oil scraping edge 5 is step-shaped, the oil scraping edge 5 is narrow, the contact area with the cylinder sleeve is small, the oil scraping capability is high, the friction loss and the engine oil consumption can be reduced, the requirements of a low-emission engine on the oil ring structure of the piston ring are met, the oil holes 2 are small round holes, the number of the oil holes 2 is large, the area of the oil holes 2 is small, the piston ring is high in strength and not prone to fracture, the adaptability to the cylinder sleeve and the deformation shape of the cylinder sleeve is high, and the sealing performance is good.

The working principle of the utility model is as follows: this setting of step frizing limit 5 for in engine operation process, the area of contact with the cylinder liner is little, frizing ability is strong, reduces friction loss and machine oil consumption, this aperture cast iron oil ring is better than traditional macropore cast iron oil ring to the ability of following of cylinder liner deformation, the piston ring can fully with cylinder jacket wall contact, the passageway of shutoff lubricating oil, reduce machine oil consumption, and frizing limit 5's width is 0.35 +/-0.10 mm, frizing limit 5's last step width is 0.15 +/-0.07 mm, frizing limit 5 tapering alpha: 8 +/-4 degrees, and the outside of the middle ring 6 is provided with 36-48 oil holes 2, the diameter of each oil hole 2 is 0.8-1.2 mm, the area of each oil hole 2 is small, the number of the oil holes is large, the effect is better, the strength of the piston ring is high, the piston ring is not easy to break, the piston ring has strong adaptability to the cylinder sleeve and the deformation shape thereof, the sealing performance is good, the oil consumption is reduced by 50 percent at most, the friction loss is reduced by about 20 percent, the friction loss and the oil consumption can be reduced, and the requirement of a low-emission engine on the oil ring structure of the piston ring is met.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. Small hole step cast iron oil ring, including intermediate ring (6), its characterized in that, last fixed ring (1) is installed to the upper surface integral type of intermediate ring (6), and the lower fixed ring (3) is installed to the lower surface integral type of intermediate ring (6), fixed through hole (4) have all been seted up to the intermediate position department of last fixed ring (1), intermediate ring (6) and lower fixed ring (3), the upper surface of last fixed ring (1) and the lower surface of lower fixed ring (3) all are provided with scrapes oil limit (5), and the intermediate position department of last fixed ring (1), intermediate ring (6) and lower fixed ring (3) sets up fluted (7), oilhole (2) have been seted up to the outside of intermediate ring (6).

2. The small bore stepped cast iron oil ring as set forth in claim 1, characterized in that said upper retainer ring (1) and lower retainer ring (3) are of the same size and shape, and said wiping edge (5) has a width of at least 0.25 mm.

3. A small bore stepped cast iron oil ring according to claim 1, characterized in that the scraping edge (5) is stepped.

4. The small bore-step cast iron oil ring as set forth in claim 1, characterized in that the number of the oil holes (2) is at least thirty-six and the diameter of the oil holes (2) is at least 0.8 mm.