CN110778374A

CN110778374A - Oil pan of engine

Info

Publication number: CN110778374A
Application number: CN201910951005.5A
Authority: CN
Inventors: 房志红; 居钰生; 张春英; 杨凯; 袁宝良; 朱明健
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-02-11

Abstract

The invention belongs to the field of automobile engines, and discloses an engine oil pan which comprises an oil bottom shell, an oil bottom middle shell, an oil bottom upper shell, an oil non-falling bucket and an oil bucket support. The invention reduces the influence of the inner bucket of the non-toppling oil bucket on the gradient condition of the road surface by arranging the non-toppling oil bucket with a double-layer structure in the inner part and utilizing the characteristic that the gravity centers of double-layer objects are deviated to the same rotating center, and stabilizes the inner bucket at a certain posture, thereby ensuring that the oil liquid level in the inner bucket is kept stable, facilitating the deployment of other accessories of the engine and expanding the application environment of the engine.

Description

Oil pan of engine

Technical Field

The invention relates to the field of automobile engines, in particular to an engine oil pan.

Background

The oil sump is mounted in the lower part of the engine block and functions to collect and store lubricating oil, ensure lubrication and cooling of the mechanical moving parts, and maintain the operating pressure of the crankcase. Generally, the oil level of the lubricating oil in the oil pan is not too high, and is not too low, so that the lubricating oil consumption is increased due to too high, and faults or parts damage are caused due to insufficient lubrication due to too low.

As a transport vehicle for mine roads as a main working environment, the vehicle often runs on the road surfaces of long uphill slopes, long downhill slopes, large gyration and the like, the oil suction port of the strainer is higher than the oil level of the oil pan due to the large vehicle inclination angle, short-time discontinuous oil supply is generated, and the abrasion and even damage of the moving parts of the engine are accelerated; this phenomenon also occurs when the vehicle is accelerated and decelerated.

Different from road transport vehicles, vehicle driving under the road surfaces of long uphill, long downhill, large gyration and the like which are common in mine roads puts special requirements on parameters of an engine, and an oil pan needs to be specially designed, so that engine oil used in the mine vehicles is ensured to keep a good lubricating state.

Disclosure of Invention

The invention aims to provide an engine oil pan, which is characterized in that an oil hopper structure is arranged in the oil pan, so that the engine oil hopper is always in a vertical state, an oil suction port of a strainer is always in an oil liquid surface, and the condition that the oil suction port of the strainer is higher than the oil liquid surface of the oil pan is avoided.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an engine oil pan, includes the oil bottom shell of constituteing by oil bottom inferior valve, oil bottom mesochite and oil bottom epitheca, still includes:

the non-toppling oil hopper is arranged inside the oil bottom shell and comprises a hemispherical inner hopper and a hemispherical outer hopper which are concentric, the inner hopper is used for storing oil, and the outer hopper is movably connected with the outer hopper so as to support the inner hopper to rotate inside the outer hopper by bypassing a first axis of the sphere center;

the oil bucket supports, sets up relatively the both sides of not falling the oil bucket can support not falling the oil bucket makes outer fill can walk around the second axis rotation of centre of sphere, just first axis with the second axis is the contained angle setting.

Preferably, a strainer oil suction opening is arranged in the non-toppling oil hopper, and the strainer oil suction opening is arranged at the bottom of the inner hopper and used for taking oil from the inner hopper.

Preferably, a machine body oil return pipe is arranged above the non-toppling oil hopper, and an outlet of the machine body oil return pipe is positioned right above the inner hopper.

Preferably, the second axis is perpendicular to the first axis.

Preferably, the first axis is arranged along a vehicle length direction.

Preferably, the second axis is arranged in the vehicle width direction.

Preferably, inner pin shafts are fixed on two opposite sides of the outer surface of the inner bucket, first pin holes movably connected with the inner pin shafts are formed in the outer bucket, and the axis of each inner pin shaft is the first axis.

Preferably, outer pin shafts are fixed on two opposite sides of the outer surface of the outer bucket, an L-shaped groove movably connected with the outer pin shafts is formed in the oil bucket support, and the axis of each outer pin shaft is the second axis.

Preferably, the inner pin shaft is provided with a step structure for axially positioning the inner bucket.

Preferably, the outer pin shaft is provided with a step structure for axially positioning the outer bucket.

The invention has the beneficial effects that: the structure of the non-falling oil bucket is arranged in the oil pan, and the inner bucket of the non-falling oil bucket is always in a vertical state according to the characteristic that the gravity centers of double-layer objects are deviated in the same rotating center, so that the oil suction port of the strainer is always in the oil liquid surface. Meanwhile, the invention also has the advantages of simple structure, good reliability, low cost and the like.

Drawings

FIG. 1 is a front view of an engine oil pan according to an embodiment of the present invention;

FIG. 2 is a side view of an engine oil pan according to an embodiment of the present invention;

FIG. 3 is a top view of an engine oil pan according to an embodiment of the present invention;

FIG. 4 is an isometric view of an oil scoop of an engine oil pan according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an oil falling prevention bucket of an engine oil sump according to an embodiment of the invention;

FIG. 6 is a schematic structural diagram of an outer bucket of an engine oil sump according to an embodiment of the invention;

FIG. 7 is a schematic structural diagram of an inner bucket of an engine oil sump according to an embodiment of the invention;

FIG. 8 is a schematic structural view of an oil bucket support of an engine oil pan according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a prior art forward-tilted oil level of an engine oil pan without an oil scoop;

FIG. 10 is a schematic diagram of the oil level of the oil pan of the engine in a forward tilted state according to the embodiment of the present invention;

FIG. 11 is a schematic view of a forward-tilted oil sump of an engine oil pan according to an embodiment of the present invention;

fig. 12 is a schematic diagram of the oil sump in a left-leaning state of the engine oil sump according to the embodiment of the invention.

In the figure:

1. the oil hopper is not poured; 2. an oil suction port of the strainer; 3. a lower casing of the oil pan; 4. a bottom-of-oil mesochite; 5. an oil bottom shell; 6. an oil return pipe of the machine body; 7. supporting an oil bucket;

11. an outer bucket; 111. a main beam structure; 112. a first pin hole; 113. a second pin hole;

12. an inner bucket; 121. a spherical shell portion; 122. lifting lugs; 123. a third pin hole;

13. an outer pin shaft; 14. an inner pin shaft;

71. an L-shaped slot.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes to distinguish one from another.

As shown in fig. 1 to 5, the invention provides an engine oil pan, which comprises an oil bottom shell consisting of an oil bottom lower shell 3, an oil bottom middle shell 4 and an oil bottom upper shell 5, and further comprises a non-toppling oil bucket 1 and an oil bucket support 7.

Wherein, the non-toppling oil bucket 1 is arranged inside the oil bottom shell and comprises a hemispherical inner bucket 12 and a hemispherical outer bucket 11 which are concentric with the spherical center O, the inner bucket 12 is used for storing oil, and the outer bucket 11 and the inner bucket 12 are movably connected so as to support the inner bucket 12 to rotate around the first axis of the spherical center O inside the outer bucket 11. The oil bucket supports 7 are oppositely arranged on two sides of the non-toppling oil bucket 1, and can support the non-toppling oil bucket 1 to enable the outer bucket 11 to rotate around the second axis of the spherical center O.

In addition, a strainer oil suction port 2 is arranged in the non-falling oil hopper 1, and the strainer oil suction port 2 is arranged at the bottom of the inner hopper 12 and is used for taking oil from the inner hopper 12. An engine body oil return pipe 6 is arranged above the non-toppling oil hopper 1, and an outlet of the engine body oil return pipe 6 is positioned right above the inner hopper 12.

The invention reduces the influence of the gradient condition of the road surface on the inner bucket 12 of the non-toppling oil bucket 1 by arranging the non-toppling oil bucket 1 with a double-layer structure in the inner part and utilizing the characteristic that the gravity centers of double-layer objects are deviated to the same rotating center, stabilizes the inner bucket 12 at a certain posture, thereby ensuring that the oil level in the inner bucket 12 is kept stable, is convenient to arrange other accessories (such as a filter oil suction port 2, a machine body oil return pipe 6 and the like) of an engine, and expands the application environment of the engine.

Specifically, as shown in fig. 6, the outer bucket 11 has a hemispherical shape as a whole, and the center of gravity thereof is distributed in the hemispherical portion, and is composed of a main beam structure 111, first pin holes 112 oppositely disposed on both sides of the outer bucket 11, and second pin holes 113 oppositely disposed on both sides of the outer bucket 11. The girder structure 111 adopts a chord plane hollowed-out design to reduce the weight of the outer bucket 11, the first pin hole 112 and the second pin hole 113 are both arranged on the hemispherical section of the outer bucket 11, the inner pin 14 is arranged in the first pin hole 112, the outer pin 13 is arranged in the second pin hole 113, and a first axis formed by the axis of the inner pin 14 is perpendicular to a second axis formed by the axis of the outer pin 13. According to the mechanics theory, when the second axis is not perpendicular to the gravity direction, the outer bucket 11 tends to move towards the plane formed by the gravity center of the outer bucket 11 and the second axis and the gravity direction with the second axis as the rotating axis.

As shown in fig. 7, the inner bucket 12 is a hemispherical shell having a common spherical center O with the outer bucket 11, and includes a spherical shell portion 121 and a pair of lifting lugs 122, wherein the center of gravity of the inner bucket 12 is distributed on the hemispherical portion, and the inner bucket can contain engine oil therein. The lifting lugs 122 are arranged on two opposite sides of the inner bucket 12, third pin holes 123 are formed in the lifting lugs 122, and the third pin holes 123 are connected with the inner pin shafts 14 in a matched mode, so that the inner bucket 12 can rotate around the first axis in the outer bucket 11. Similarly, according to the theory of mechanics, when the first axis is not perpendicular to the gravity direction of the inner bucket 12, the inner bucket 12 has the first axis as the rotation axis. And moves towards the direction of the gravity and the plane formed by the gravity center of the inner bucket 12 and the first axis.

As shown in fig. 8, the oil bucket supports 7 distributed on both sides of the outer bucket 11 are U-shaped blocks with a certain width, wherein the inner side end surface of the U-shaped block is provided with an L-shaped groove 71 for placing the outer pin 13 of the non-toppling oil bucket 1, the second axis is formed by matching the outer pin 13 with the oil bucket supports 7, and the outer side end surfaces of the two oil bucket supports 7 are welded on the inner wall of the oil pan casing for supporting the non-toppling oil bucket 1.

In order to prevent the inner bucket 12 and the outer bucket 11 from moving along the axial direction of the first axis or the axial direction of the second axis, the inner pin shaft 14 is provided with a step structure for axially positioning the inner bucket 12; the outer pin 13 is also provided with a step structure for axially positioning the outer bucket 11.

As shown in fig. 9-10, the invention provides the non-toppling bucket 1 in the oil pan, when the inclination angle of the vehicle in the first axial direction is α, because of the above-mentioned structural characteristics of the non-toppling bucket 1, the inner bucket 12 has a state of keeping the opening always in the horizontal upward state according to the principle that the weight centers of the double-layer objects similar to the gyroscope are eccentric to the same rotation center, thereby when the vehicle is in the heavy-slope driving state, compared with the existing oil pan, the oil suction port 2 of the strainer can be kept below the oil level.

In particular, since the vehicle is more frequently inclined in the front-rear direction and the left-right direction during traveling, in order to adjust the postures of the inner bucket 12 and the outer bucket 11 according to the road surface environment more quickly, the first axis is arranged along the vehicle length direction, and the second axis is arranged along the vehicle width direction, the oil level in the bucket 1 is not reversed when the vehicle is inclined at an angle of α in the length direction as shown in fig. 11, and the oil level in the bucket 1 is not reversed when the vehicle is inclined at an angle of β in the width direction as shown in fig. 12.

Meanwhile, in the embodiment, the oil return pipe 6 of the engine body can continuously drain the engine oil which flows back in the engine body into the inner bucket 12 of the non-toppling oil bucket 1, and the liquid level in the inner bucket 12 is always in a horizontal state, so that the oil suction port 2 of the strainer is always below the liquid level of the engine oil, and the vehicle can be guaranteed to run on a road surface with a large slope for a long time.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an engine oil pan, includes the oil bottom shell of constituteing by oil bottom inferior valve (3), oil bottom mesochite (4) and oil bottom epitheca (5), its characterized in that still includes:

the non-toppling oil hopper (1) is arranged inside the oil bottom shell and comprises a hemispherical inner hopper (12) and a hemispherical outer hopper (11), wherein the hemispherical inner hopper (12) and the hemispherical outer hopper (11) are concentric, the inner hopper (12) is used for storing oil, and the outer hopper (11) is movably connected with the outer hopper (11) so as to support the inner hopper (12) to rotate inside the outer hopper (11) by bypassing a first axis of the sphere;

the oil bucket supports (7) are arranged on two sides of the non-toppling oil bucket (1) relatively and can support the non-toppling oil bucket (1) to enable the outer bucket (11) to rotate around a second axis of the sphere center, and the first axis and the second axis are arranged at an included angle.

2. The engine oil pan of claim 1,

the oil-collecting filter is characterized in that a strainer oil suction port (2) is arranged in the non-pouring oil hopper (1), and the strainer oil suction port (2) is arranged at the bottom of the inner hopper (12) and used for taking oil from the inner hopper (12).

3. The engine oil pan of claim 1,

an engine body oil return pipe (6) is arranged above the non-toppling oil hopper (1), and an outlet of the engine body oil return pipe (6) is located right above the inner hopper (12).

4. The engine oil pan of claim 1,

the second axis is perpendicular to the first axis.

5. The engine oil pan of claim 1,

the first axis is arranged along a vehicle length direction.

6. The engine oil pan of claim 5,

the second axis is arranged in the vehicle width direction.

7. The engine oil pan of claim 1,

inner pin shafts (14) are fixed on two opposite sides of the outer surface of the inner bucket (12), first pin holes (112) movably connected with the inner pin shafts (14) are formed in the outer bucket (11), and the axis of each inner pin shaft (14) is the first axis.

8. The engine oil pan of claim 1,

outer pin shafts (13) are fixed on two opposite sides of the outer surface of the outer bucket (11), an L-shaped groove (71) movably connected with the outer pin shafts (13) is formed in the oil bucket support (7), and the axis of each outer pin shaft (13) is the second axis.

9. The engine oil pan of claim 7,

the inner pin shaft (14) is provided with a step structure and is used for axially positioning the inner bucket (12).

10. The engine oil pan of claim 8,

the outer pin shaft (13) is provided with a step structure and is used for axially positioning the outer bucket (11).