CN213775545U - Integrated oil duct engine cylinder body and engine - Google Patents

Abstract

The utility model provides an integrated oil duct engine cylinder body and engine, wherein integrated oil duct engine cylinder body, include: the engine oil pump is arranged in the engine cylinder body, and a low-pressure oil duct and a high-pressure oil duct of the engine oil pump are arranged in the engine cylinder body; the bottom of the engine cylinder body is connected with an oil suction pipe which is directly communicated with the low-pressure oil duct. The oil pump and the oil duct of the oil pump are integrated in the engine cylinder body, so that the connection point between the external oil duct and the engine cylinder body is reduced, the arrangement and the structure of the oil duct on the engine cylinder body are simplified, the oil leakage risk among a plurality of connection surfaces is avoided, and the layout of parts of the engine cylinder body is more compact. The oil suction pipe is directly connected to the engine cylinder body, so that the conveying stroke of the engine oil in the engine cylinder body is shortened, the engine oil can be more directly conveyed to parts needing to be lubricated, and the stable operation of the engine is ensured.

Description

Integrated oil duct engine cylinder body and engine

Technical Field

The utility model relates to an engine field especially relates to an integrated oil duct engine cylinder body and engine.

Background

The engine block is the most important part of the engine, and the function of the engine block is to provide installation, support and guarantee of accurate position of each engine and parts thereof during operation of moving parts such as a piston, a connecting rod, a crankshaft and the like, and guarantee of cooling and lubrication of the engine. The oil duct is an important part of an engine lubricating system, a plurality of parts which move in a mutual friction mode are arranged in the engine, such as a crankshaft main journal and a main bearing, a cam journal and a cam bearing, a piston ring and a cylinder wall surface and the like, the parts are high in moving speed and severe in working environment, the oil duct conveys engine oil to each part, sufficient lubrication is guaranteed, abrasion can be reduced, and the service life of the engine is prolonged.

The oil pump and the oil duct of the existing engine cylinder body are arranged outside the cylinder body, the oil duct and the engine cylinder body have more connecting points, the defects of large external volume of the engine cylinder body, complex parts and the like exist, oil leakage is easy to occur at a plurality of connecting points, and the normal operation of the engine is influenced.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model aims to provide an integrated oil duct engine cylinder body and engine assembles inside the cylinder body with the oil pump assembly of engine cylinder body to make the oil duct integrate to the cylinder body, arrange under the compact prerequisite making spare part, guaranteed the steady operation of engine.

The utility model provides an integrated oil duct engine cylinder body, include: the oil pump is arranged on the oil tank,

the oil pump is arranged in the engine cylinder body, and a low-pressure oil duct and a high-pressure oil duct of the oil pump are arranged in the engine cylinder body;

the bottom of the engine cylinder body is connected with an oil suction pipe which is directly communicated with the low-pressure oil duct.

Further, a low-pressure oil cavity and a high-pressure oil cavity are formed in the engine cylinder body, and the low-pressure oil duct and the high-pressure oil duct are respectively communicated with the low-pressure oil cavity and the low-pressure oil cavity.

Further, the engine cylinder body is provided with a pressure regulating valve of the oil pump, and the pressure regulating valve is arranged in a return oil duct between the high-pressure oil chamber and the low-pressure oil chamber.

Further, at least one part of the return oil duct can enable the high-pressure oil chamber to be communicated with the low-pressure oil chamber, so that engine oil in the high-pressure oil chamber can return to the low-pressure oil chamber.

Further, an oil pan is arranged at the bottom of the engine cylinder body, and the oil suction pipe is installed inside the oil pan.

Further, the oil pan and the oil suction pipe are of a split structure and are respectively and independently connected to the engine cylinder body.

Further, a cylinder body oil inlet is formed in the bottom of the engine cylinder body, the oil suction pipe is directly connected with the cylinder body oil inlet, and the oil suction pipe and the cylinder body oil inlet are sealed through a sealing ring.

Further, the oil suction pipe includes an oil suction passage having a circular flow cross section and provided therein.

Further, the engine block also comprises a crankshaft for providing power, and the crankshaft drives the oil pump to operate through a timing chain wheel.

An engine comprising the engine block.

The utility model discloses an oil duct integration with oil pump and oil pump is inside engine cylinder body, has reduced the tie point of connecting between outside oil duct and the engine cylinder body, has simplified the arrangement and the structure of oil pipe way on the engine cylinder body, has avoided a plurality of oil leak risks that exist between the connection face, makes the overall arrangement of engine cylinder body spare part compacter simultaneously.

The oil suction pipe is directly connected to the engine cylinder body, so that the conveying stroke of the engine oil in the engine cylinder body is shortened, the engine oil can be more directly conveyed to parts needing to be lubricated, and the stable operation of the engine is ensured.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

FIG. 1 is a diagram illustrating a relationship between an oil pump, an oil pan, and an engine block in the prior art;

FIG. 2 is a schematic structural view of an installation end face of the oil pump on the engine cylinder body according to the present invention;

fig. 3 is a schematic view of a cross-sectional structure of the middle and low pressure oil duct of the present invention on the engine cylinder block;

FIG. 4 is a schematic cross-sectional structural view of an oil cavity of an oil pump in the present invention on an engine cylinder;

fig. 5 is a schematic view of a cross-sectional structure of the middle-high pressure oil duct on the engine cylinder body according to the present invention;

fig. 6 is a schematic structural view of the oil suction pipe of the present invention;

FIG. 7 is a schematic view of the mounting of the control valve on the engine cylinder of the present invention;

fig. 8 is a schematic view of a driving structure of the middle oil pump of the present invention.

In the drawings, like parts are designated with like reference numerals, and the drawings are not to scale.

Detailed Description

For the purpose of clearly explaining the contents of the present invention, the present invention will be described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 2-5, the utility model provides an integrated oil duct engine cylinder body, including installing the oil pump in engine cylinder body 1 inside, be provided with low pressure oil duct 11 and the high pressure oil duct 12 of oil pump in engine cylinder body 1 inside, be connected with the oil absorption pipe 3 with low pressure oil duct 11 straight-through in engine cylinder body 1 bottom.

In the process of conveying the engine oil, the engine oil directly enters a low-pressure oil duct 11 before the engine oil pump is supercharged through an oil suction pipe 3 connected to the bottom of an engine cylinder body 1, enters a high-pressure oil duct 12 under the action of the engine oil pump supercharging, and enters a downstream machine filter and machine cooling module through the high-pressure oil duct 12.

The oil pump assembly is assembled inside the engine cylinder body 1, and the oil duct is integrated on the engine cylinder body 1, so that the engine cylinder body 1 is highly integrated, the volume of the oil pump and an auxiliary pipeline thereof outside the engine cylinder body 1 is reduced, the pipeline arrangement is simplified, the oil can directly enter the engine cylinder body 1, and the lubricating efficiency of the oil on parts inside the engine cylinder body is effectively improved.

As shown in fig. 1, in the conventional fitting relationship between the oil pump 2, the oil pan 5, and the engine block 1, the oil pump 2 is connected to the outside of the engine block 1, and the oil pan 5 is connected to the lower side of the oil pump 2. In the process of conveying the engine oil, the engine oil firstly needs to enter an oil suction cavity in an oil pan 5, enters the engine oil pump 2 through an oil inlet between the oil pan 5 and the engine oil pump 2, and then enters the engine cylinder body 1 through the pressurization of the engine oil pump 2.

An oil inlet channel and an oil outlet channel of the oil pump 2 are both arranged outside the engine cylinder body 1, so that the external structure of the engine cylinder body 1 is complicated. In addition, the structure of the oil suction cavity in the existing oil pan 5 is limited to the specific form of the oil pan 5 to a great extent, and when the oil pump 2 is matched with the oil pan 5 with other shape structures, the oil suction cavity of the oil pump 2 in the oil pan 5 needs to be redesigned, which seriously affects the wide application of the engine.

The oil suction pipe which is connected to the bottom of the engine cylinder body and is directly communicated with the low-pressure oil duct can enable engine oil to directly enter the engine cylinder body, and parts and connection points outside the engine cylinder body are reduced, so that on one hand, the external layout of the engine cylinder body is effectively simplified, on the other hand, the oil suction structure is free from the limitation of an oil pan structure, and the oil pan which is directly communicated with the low-pressure oil duct can be matched with oil pans with different structural shapes, so that the actual requirements during production are met.

With reference to fig. 3-5, in one embodiment, a low-pressure oil chamber 13 and a high-pressure oil chamber 14 are provided inside the engine cylinder 1 at the inlet and outlet of the engine oil pump, specifically, the low-pressure oil passage 11 is communicated with the low-pressure oil chamber 13, and the engine oil in the oil suction pipe 3 is delivered to the low-pressure oil chamber 13 before pressurization through the low-pressure oil passage 11; the high-pressure oil duct 12 is communicated with the high-pressure oil chamber 14, and the pressurized engine oil enters the high-pressure oil duct 12 from the high-pressure oil chamber 14 to lubricate downstream parts. By integrating the low-pressure oil chamber 13 and the high-pressure oil chamber 14 into the engine cylinder body 1, the technical effects of simplifying the structure of the engine cylinder body 1 and enabling the distribution of parts to be more reasonable can also be achieved.

Referring to fig. 7, the pressure regulating valve 4 of the oil pump is further mounted on the engine block 1 in the present embodiment, and the pressure regulating valve 4 is particularly mounted in the return oil passage 15 between the high-pressure oil chamber 14 and the low-pressure oil chamber 13, and the pressure in the high-pressure oil chamber 14 can be regulated by the pressure regulating valve 4. Specifically, at least a portion of the return oil passage 15 can communicate the high-pressure oil chamber 14 with the low-pressure oil chamber 13 to enable the oil in the high-pressure oil chamber 14 to return to the low-pressure oil chamber 13, i.e., the return oil passage 15 can be made to constitute a short-circuit connection between the high-pressure oil chamber 14 and the low-pressure oil chamber 13 by adjusting the pressure-regulating valve 4. When the pressure of the high-pressure oil chamber 14 is excessive, the pressure regulating valve 4 is opened, so that the return oil passage 15 communicates the high-pressure oil chamber 14 with the low-pressure oil chamber 13, thereby reducing the pressure in the high-pressure oil chamber 14. By adjusting the pressure in the high-pressure oil chamber 14, the excessive oil pressure of the oil pump can be limited, and the pressure difference between the high-pressure oil chamber 14 and the low-pressure oil chamber 13 is effectively reduced, so that the oil pump is protected, and the damage of the oil pump caused by excessive supercharging pressure is prevented.

In another embodiment of the present invention, an oil pan 5 is provided at the bottom of the engine cylinder block 1, and the oil suction pipe 3 is specifically installed inside the oil pan 5. The oil pan 5 and the oil suction pipe 3 are separated structures and are respectively and independently connected to the bottom of the engine cylinder body 1. Through this kind of mode of setting, can make the structure of oil absorption pipe 3 keep for independent design, can make oil absorption pipe 3 match the oil pan 5 of different structural shapes, promptly when assembling the oil pan 5 of different forms, only need satisfy oil absorption pipe 3 and oil pan 5 have sufficient space not to interfere each other can.

Referring to fig. 3 and fig. 6, in the present embodiment, a cylinder oil inlet 16 is disposed at the bottom of the engine cylinder 1, an oil inlet pipe 31 and an oil outlet 32 are disposed on the oil suction pipe 3, and the oil outlet 32 is directly connected to the cylinder oil inlet 16, so that a stroke of engine oil before entering the engine cylinder 1 is greatly reduced, and an effect efficiency of the engine oil on lubricating components in the cylinder is improved. The oil outlet 32 on the oil suction pipe 3 and the cylinder body oil inlet 16 are axially sealed by an O-shaped sealing ring (not shown in the figure), so that the sealing effect of the oil inlet structure can be improved, the oil leakage phenomenon is avoided, and the stability and reliability of the operation of the engine cylinder body 1 are ensured. The oil suction pipe 3 in the embodiment abandons the existing oil suction cavity structure in fig. 1, and is independently installed at the bottom of the engine cylinder body 1 through the bolt hole 33 arranged on the oil suction pipe 3, so that the engine oil is directly and efficiently conveyed, an oil suction channel which is directly communicated with the low-pressure oil duct 11 is arranged in the oil suction pipe 3, and the circulation section of the oil suction channel is circular, so that the resistance during oil suction is effectively reduced, and the oil suction efficiency of the engine oil pump is improved.

With reference to fig. 8, the oil pump 2 of the present invention is specifically driven by the crankshaft 6 disposed inside the engine cylinder 1, specifically, the oil pump 2 is disposed between the fuel pump 7 and the crankshaft 6, the crankshaft 6 provides power for the fuel pump 7 and the oil pump 2 at the same time, the fuel pump 7 and the oil pump 2 are both provided with the timing sprocket 8, and the crankshaft 6 drives the fuel pump 7 and the oil pump 2 simultaneously through the timing chain engaged with the timing sprocket 8.

The utility model also provides an engine of including above-mentioned engine cylinder body, can effectively guarantee the lubricated effect of inside spare part, and the operation is reliable and stable.

Finally, it is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as the protection scope of the invention.

Claims (10)

1. An integrated gallery engine block, comprising: the oil pump is arranged on the oil tank,

the oil pump is arranged in the engine cylinder body, and a low-pressure oil duct and a high-pressure oil duct of the oil pump are arranged in the engine cylinder body;

the bottom of the engine cylinder body is connected with an oil suction pipe which is directly communicated with the low-pressure oil duct.

2. The integrated gallery engine block of claim 1, wherein the engine block has a low pressure oil gallery and a high pressure oil gallery disposed therein, the low and high pressure oil galleries communicating with the low and low pressure oil galleries, respectively.

3. The integrated oil gallery engine block of claim 2, wherein the engine block has mounted thereon a pressure regulating valve of the oil pump mounted in a return oil gallery between the high-pressure oil gallery and the low-pressure oil gallery.

4. The integrated gallery engine block of claim 3, wherein at least a portion of the return oil gallery enables the high-pressure oil chamber to communicate with the low-pressure oil chamber for enabling oil in the high-pressure oil chamber to return to the low-pressure oil chamber.

5. The integrated oil passage engine block according to claim 1, wherein the bottom of the engine block is provided with an oil pan inside which the oil suction pipe is mounted.

6. The integrated oil passage engine block according to claim 5, wherein the oil pan and the oil suction pipe are of a separate structure and are separately connected to the engine block, respectively.

7. The integrated oil passage engine cylinder block as claimed in claim 1, wherein a cylinder block oil inlet is formed in the bottom of the engine cylinder block, the oil suction pipe is directly connected with the cylinder block oil inlet, and the oil suction pipe and the cylinder block oil inlet are sealed through a sealing ring.

8. The integrated oil passage engine block according to claim 1, wherein the oil suction pipe includes an oil suction passage having a circular flow cross section provided therein.

9. The integrated oil gallery engine block of any one of claims 1-8, further comprising a crankshaft for providing power, the crankshaft driving the oil pump to operate via a timing sprocket.

10. An engine comprising the integrated oil passage engine block according to any one of claims 1 to 9.

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