CN213980901U - Engine oil pump and engine - Google Patents
Engine oil pump and engine Download PDFInfo
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- CN213980901U CN213980901U CN202022467139.0U CN202022467139U CN213980901U CN 213980901 U CN213980901 U CN 213980901U CN 202022467139 U CN202022467139 U CN 202022467139U CN 213980901 U CN213980901 U CN 213980901U
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- oil pump
- crankcase
- crankshaft
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Abstract
The utility model discloses an engine oil pump and engine, which relates to the technical field of engines, wherein the engine oil pump is arranged at the front end of a crankcase of an engine cylinder body and comprises an oil pump body, a crankcase sealing flange, a front oil seal, an oil inlet channel, an inner rotor assembly, an outer rotor assembly, an oil outlet channel and a cylinder body base mounting surface, wherein the crankcase sealing flange is arranged at the rear end of the oil pump body; the oil pump body is provided with a front and rear through cavity, the inner and outer rotor assemblies are positioned in the oil pump body and arranged around the cavity, and the inner and outer rotor assemblies are respectively communicated with the oil inlet channel and the oil outlet channel; the front oil seal is arranged at the front end of the cavity and used for sealing a small end of a crankshaft of the engine; the cylinder block base mounting surface is arranged at the bottom end of the oil pump body and connected with an engine cylinder block base. The device provided by the utility model easy maintenance is simple.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to an engine oil pump and engine.
Background
The oil pump of the engine has the function of conveying the oil pumped from the oil sump to each part of the engine needing lubrication in a pressurizing way to lubricate the dynamic pair.
The traditional engine oil pump is mainly arranged inside an engine gear chamber or an oil pan, and has a single function; when in maintenance, the related sealing parts such as gear chambers and the like on the outside of the gear chamber need to be disassembled, and the maintenance operation is complex.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists, the utility model provides an engine oil pump, easy maintenance is simple.
In order to realize the purpose of the utility model, the technical scheme of the utility model is as follows:
an engine oil pump is arranged at the front end of a crankcase of an engine cylinder body and comprises an oil pump body, a crankcase sealing flange, a front oil seal, an oil inlet channel, an inner rotor component, an outer rotor component, an oil outlet channel and a cylinder body base mounting surface, wherein,
the crankcase sealing flange is arranged at the rear end of the oil pump body and is in sealing connection with the front end of a crankcase of an engine cylinder body;
the oil pump body is provided with a front and rear through cavity, the inner and outer rotor assemblies are positioned in the oil pump body and arranged around the cavity, and the inner and outer rotor assemblies are respectively communicated with the oil inlet channel and the oil outlet channel;
the front oil seal is arranged at the front end of the cavity and used for sealing a small end of a crankshaft of the engine;
the cylinder block base mounting surface is arranged at the bottom end of the oil pump body and is connected with an engine cylinder block base;
the oil inlet channel is provided with an oil inlet on the mounting surface of the cylinder block base;
the oil outlet channel is provided with an oil outlet at the sealed end face of the crankcase sealing flange, and the oil outlet is communicated with the engine main oil channel.
The oil collecting groove is arranged between the inner rotor assembly and the outer rotor assembly and between the front oil seal and the front oil seal, the opening of the oil return hole is formed in the non-sealing end face of the sealing flange of the crankcase, and the oil collecting groove is communicated with the oil return hole.
Further, still include pressure relief valve and pressure relief valve oil relief hole, pressure relief valve set up in go out the oil duct lateral wall, pressure relief valve oil relief hole opening in the sealed flange non-sealing end face of crankcase, pressure relief valve with pressure relief valve oil relief hole intercommunication.
The utility model also provides an engine, include the engine oil pump, cylinder block crankcase front end is open structure, with crankcase sealing flange sealing connection.
Furthermore, the small end of the crankshaft is inserted into the cavity of the oil pump body and is matched with the inner rotor assembly and the outer rotor assembly.
The crankshaft vibration absorber is fixed with the outer end face of the small end of the crankshaft, and an outer shaft neck of the crankshaft vibration absorber is matched with the front oil seal to seal the small end of the crankshaft.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model provides an oil pump, the rear end face of the oil pump body is designed into a crankcase sealing flange face according to the size and the shape of a crankcase of an engine front end cylinder block, and the oil pump is directly externally installed at the front end of an engine body and sealed with the front end of the crankcase; the crankshaft vibration damper is fixed with the outer end face of the small end of the crankshaft, and the outer shaft neck of the crankshaft vibration damper is matched with a front oil seal on the oil pump to seal the small end of the crankshaft. As long as dismantle down oil pump or bent axle shock absorber during the maintenance, just can overhaul the oil pump, need not unpack apart engine gear room or oil pan etc. the utility model provides a device easy maintenance is simple.
2. The utility model discloses the rotor formula oil pump that adopts compact structure, the oil absorption vacuum is higher, and pump oil volume is great, and the oil feed is even moreover, with the utility model discloses the oil pump is installed and is brought out the best in each other in the higher condition in the crankcase outside and position, improves the working efficiency of oil pump.
Drawings
Fig. 1 is a front view schematic diagram of an engine oil pump according to an embodiment of the present invention;
fig. 2 is a schematic rear view of an engine oil pump according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a cross-sectional structure of an engine oil pump and an engine installation according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the relationship between the small end of the engine crankshaft and the internal and external rotor assemblies of the oil pump according to the embodiment of the present invention;
FIG. 5 is an enlarged view of a portion M of FIG. 3;
fig. 6 is a top view of an engine oil pump according to an embodiment of the present invention;
fig. 7 is a cross-sectional view taken along line D-D of fig. 6.
In the figure, 1-an oil pump body, 2-a crankcase sealing flange, 3-a front oil seal, 4-a pressure relief valve, 41-a pressure relief valve oil relief hole, 5-an oil collecting tank, 6-an oil inlet channel, 61-an oil inlet, 7-an oil return hole, 8-an inner and outer rotor assembly, 9-an oil outlet channel, 91-an oil outlet, 10-a cylinder block base mounting surface, 11-a crankshaft damper, 12-a crankshaft small end, 13-a cylinder block crankcase, 14-a bolt.
Detailed Description
In order to explain the technical content, the achieved objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.
Example one
As shown in fig. 1 to 3, an engine oil pump is mounted at the front end of a cylinder block crankcase 13 of an engine (the front end of the cylinder block crankcase corresponds to the front end of the engine), and comprises an oil pump body 1, a crankcase sealing flange 2, a front oil seal 3, an oil inlet channel 6, an inner rotor assembly, an outer rotor assembly 8, an oil outlet channel 9 and a cylinder block base mounting surface 10, wherein,
the crankcase sealing flange 2 is arranged at the rear end of the oil pump body 1 and is in sealing connection with the front end of a crankcase 13 of an engine cylinder body;
the oil pump body 1 is provided with a front and rear through cavity, the inner and outer rotor assemblies 8 are positioned inside the oil pump body 1 and arranged around the cavity, and the inner and outer rotor assemblies 8 are respectively communicated with the oil inlet channel 6 and the oil outlet channel 9;
the front oil seal 3 is arranged at the front end of the cavity and used for sealing a small end 12 of a crankshaft of the engine;
the cylinder block base mounting surface 10 is arranged at the bottom end of the oil pump body 1 and is connected with an engine cylinder block base;
the oil inlet channel 6 is provided with an oil inlet 61 on the cylinder block base mounting surface 10;
the oil outlet channel 9 is provided with an oil outlet 91 on the sealing end face of the crankcase sealing flange 2, and the oil outlet 91 is communicated with the main oil duct of the engine.
The working principle and the process of the engine oil pump are as follows:
the small end 12 of the engine crankshaft is inserted into the front and rear through cavities of the oil pump body 1 and is matched with the inner and outer rotor assemblies 8. As shown in fig. 4, two parallel notches are processed on the small end 12 of the engine crankshaft, the inner rotor mounting holes of the inner and outer rotor assemblies 8 are cast with clamping positions, the small end 12 of the crankshaft and the inner rotor mounting holes are in clearance fit, when the engine oil pump is assembled, the clamping positions of the inner rotor mounting holes of the inner and outer rotor assemblies 8 are clamped into the notches of the small end 12 of the crankshaft, and the rotation of the small end 12 of the crankshaft can drive the inner and outer rotor assemblies 8 of the engine oil pump to work. When the small end 12 of the crankshaft works, the inner and outer rotor assemblies 8 are driven to rotate to generate vacuum, engine oil is sucked from the oil inlet 61, is pressurized by the inner and outer rotor assemblies 8 and then is output to the main oil duct of the engine from the oil outlet 91, and the functions of sucking and pressurizing and conveying the engine oil are completed. The rotor type oil pump has the advantages of compact structure, higher oil absorption vacuum degree, larger oil pumping amount and uniform oil supply, and is very suitable for being arranged on the outer side of a crankcase and higher in position.
The front end of a crankcase 13 of an engine cylinder body is of an open structure, and the rear end face of an oil pump body 1 is provided with a corresponding crankcase sealing flange 2 according to the open structure of the front end of the crankcase 13 of the engine cylinder body, is directly externally arranged at the front end of an engine body and is sealed with the front end of the crankcase 13 of the engine cylinder body; the crankshaft damper 11 is fixed with the outer end face of the crankshaft small end 12 through a bolt 14, and the outer shaft neck of the crankshaft damper 11 is matched with the front oil seal 3 on the oil pump to realize sealing of the crankshaft small end 12, as shown in fig. 5. When in maintenance, the oil pump or the crankshaft damper 11 is only needed to be dismounted, the oil pump can be maintained, and the maintenance is convenient and simple.
Example two
On the basis of the first embodiment, the oil collecting device further comprises an oil collecting groove 5 and an oil return hole 7, wherein the oil collecting groove 5 is arranged between the inner and outer rotor assemblies 8 and the front oil seal 3, the oil return hole 7 is opened at the non-sealing end face of the crankcase sealing flange 2, and the oil collecting groove 5 is communicated with the oil return hole 7, as shown in fig. 6 and 7. The oil return hole 7 is communicated with the oil collecting tank 5 and the cylinder crankcase 13, and returns the return oil of the front oil seal 3 to the cylinder crankcase 13.
EXAMPLE III
On the basis of embodiment two or implementation three, still include pressure relief valve 4 and pressure relief valve oil relief hole 41, pressure relief valve 4 set up in go out oil passage 9 lateral wall, pressure relief valve oil relief hole 41 open in the sealed flange 2 non-sealing end face of crankcase, pressure relief valve 4 with pressure relief valve oil relief hole 41 communicates. When too much engine oil is in the oil outlet channel 9, the pressure relief valve 4 is opened, and a large amount of oil in the main oil channel can be discharged from the pressure relief valve oil relief hole 41 through the valve mechanism and returns to the cylinder block crankcase 13, so that the pressure limiting protection effect on the engine oil pressure of the main oil channel is realized.
Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. An engine oil pump is characterized in that the engine oil pump is arranged at the front end of a crankcase (13) of an engine cylinder body and comprises an oil pump body (1), a crankcase sealing flange (2), a front oil seal (3), an oil inlet channel (6), an inner rotor component, an outer rotor component (8), an oil outlet channel (9) and a cylinder body base mounting surface (10),
the crankcase sealing flange (2) is arranged at the rear end of the oil pump body (1) and is in sealing connection with the front end of an engine cylinder body crankcase (13);
the oil pump body (1) is provided with a front and rear through cavity, the inner and outer rotor assemblies (8) are positioned in the oil pump body (1) and arranged around the cavity, and the inner and outer rotor assemblies (8) are respectively communicated with the oil inlet channel (6) and the oil outlet channel (9);
the front oil seal (3) is arranged at the front end of the cavity and used for sealing a small end (12) of a crankshaft of the engine;
the cylinder block base mounting surface (10) is arranged at the bottom end of the oil pump body (1) and is connected with an engine cylinder block base;
an oil inlet (61) is formed in the oil inlet channel (6) on the mounting surface (10) of the cylinder block base;
the oil outlet channel (9) is provided with an oil outlet (91) on the sealing end face of the crankcase sealing flange (2), and the oil outlet (91) is communicated with the main oil duct of the engine.
2. The engine oil pump of claim 1, further comprising an oil collecting groove (5) and an oil return hole (7), wherein the oil collecting groove (5) is arranged between the inner and outer rotor assemblies (8) and the front oil seal (3), the oil return hole (7) is opened at the non-sealing end face of the crankcase sealing flange (2), and the oil collecting groove (5) is communicated with the oil return hole (7).
3. The engine oil pump of claim 1 or 2, further comprising a pressure relief valve (4) and a pressure relief valve oil relief hole (41), wherein the pressure relief valve (4) is disposed on the side wall of the oil outlet passage (9), the pressure relief valve oil relief hole (41) opens at the non-sealing end face of the crankcase sealing flange (2), and the pressure relief valve (4) and the pressure relief valve oil relief hole (41) are communicated.
4. An engine comprising an engine oil pump according to any one of claims 1 to 3, wherein the front end of the cylinder crankcase (13) is of an open structure and is hermetically connected with the crankcase sealing flange (2).
5. An engine according to claim 4, characterized in that the small crankshaft end (12) is inserted into the cavity of the oil pump body (1) and is matched with the inner and outer rotor assemblies (8).
6. The engine according to claim 5, characterized by further comprising a crankshaft vibration damper (11), wherein the crankshaft vibration damper (11) is fixed with the outer end face of the crankshaft small end (12), and an outer shaft neck of the crankshaft vibration damper (11) is matched with the front oil seal (3) to realize sealing of the crankshaft small end (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022467139.0U CN213980901U (en) | 2020-10-30 | 2020-10-30 | Engine oil pump and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022467139.0U CN213980901U (en) | 2020-10-30 | 2020-10-30 | Engine oil pump and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213980901U true CN213980901U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202022467139.0U Active CN213980901U (en) | 2020-10-30 | 2020-10-30 | Engine oil pump and engine |
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| CN (1) | CN213980901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392571A (en) * | 2020-10-30 | 2021-02-23 | 广西玉柴机器股份有限公司 | Engine oil pump and engine |
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2020
- 2020-10-30 CN CN202022467139.0U patent/CN213980901U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392571A (en) * | 2020-10-30 | 2021-02-23 | 广西玉柴机器股份有限公司 | Engine oil pump and engine |
| CN112392571B (en) * | 2020-10-30 | 2024-04-05 | 广西玉柴机器股份有限公司 | Engine oil pump and engine |
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