Oil pump and engine

Abstract

The engine oil pump comprises a pressure control valve, when an oil cavity pumps engine oil, the engine oil can be conveyed to the engine through an oil outlet, part of the engine oil can return through an oil return opening of the engine and enter a valve element through the first end of a valve body, thrust is generated on the valve element through the pressure of the engine oil, and the valve element is pushed to move in the valve body in the axial direction; and the valve core moves to close the oil outlet and open the oil return port at the same time, and returned engine oil is conveyed back to the oil cavity from the oil return port and does not return to the oil pan, so that the amount of engine oil sucked by the engine oil pump from the oil pan is reduced, and the energy consumption of an engine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an oil pump of an engine. Background Art

[0002] At low temperatures, the viscosity of the engine oil is higher, so under the same operating conditions, the engine oil pressure will also increase. There is usually a safety valve inside the oil pump. When the oil pressure increases, the safety valve will open, allowing some oil to enter the engine return oil port and return to the oil pan through the safety valve, thereby controlling the engine oil pressure. However, the oil flow rate will increase with the increase of engine speed, resulting in an increase in the oil flow rate sucked into the oil pan by the oil pump. Excessive oil is redundant with the needs of the engine, and will also increase the load on the engine, reduce efficiency and increase fuel consumption.

[0003] Therefore, how to effectively control the oil pressure of the engine while reducing the oil suction volume of the oil pump and lowering the energy consumption of the engine has become an urgent problem to be solved in this field. Utility Model Content

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide an oil pump and an engine, which can adjust the oil circuit pressure of the engine, reduce the oil suction volume of the oil pump, and reduce the energy consumption of the engine.

[0005] In order to achieve the above purpose, the oil pump provided by the utility model is used to cooperate with the engine, including an oil chamber, an oil inlet and an engine oil return port, and also includes

[0006] A pressure control valve, comprising a valve body and a valve core built into the valve body,

[0007] The valve body is provided with an oil outlet and an oil return port, the oil outlet is connected to the oil chamber and the engine respectively, the oil return port is connected to the oil chamber, and the first end of the valve body close to the oil outlet is connected to the engine oil return port.

[0008] The valve core is configured to be axially movable in the valve body to control the opening and closing states of the oil outlet and the oil return port, and to interlock the opening and closing states of the oil outlet and the oil return port.

[0009] Furthermore, the valve core includes a plunger and an elastic connecting member, one end of the elastic connecting member is connected to the plunger, and the other end is connected to the second end of the valve body.

[0010] Furthermore, the plunger is provided with an oil outlet valve column for cooperating with the oil outlet port and an oil return valve column for cooperating with the oil return port, respectively. The diameters of the oil outlet valve column and the oil return valve column are adapted to the valve body.

[0011] Furthermore, the distance between the oil outlet valve column and the oil return valve column is greater than the distance between the oil outlet and the oil return port.

[0012] Furthermore, the width of the oil outlet valve column is smaller than the diameter of the oil outlet.

[0013] Furthermore, the width of the oil return valve column is greater than the diameter of the oil return port.

[0014] Furthermore, a push valve column is provided at the end of the plunger that cooperates with the engine oil return port, and the diameter of the push valve column is smaller than that of the oil outlet valve column and the oil return valve column.

[0015] In order to achieve the above-mentioned purpose, the engine provided by the utility model includes the above-mentioned oil pump.

[0016] The oil pump and engine provided by the utility model include a pressure control valve. When the oil chamber pumps the oil, the oil can be delivered to the engine through the oil outlet, and part of the oil will return through the engine oil return port and enter the valve core through the first end of the valve body. The oil pressure generates a thrust on the valve core, pushing the valve core to move axially in the valve body to adjust the oil circuit pressure, so that the valve core moves to close the oil outlet and open the oil return port at the same time, and the returned oil is delivered back to the oil chamber from the oil return port instead of returning to the oil pan, thereby reducing the amount of oil sucked from the oil pan by the oil pump and reducing the energy consumption of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 A schematic diagram of the structure of the oil pump provided by the utility model;

[0019] Figure 2 and Figure 3 It is a schematic diagram of the opening and closing states of the oil outlet and the oil return port in the utility model.

[0020] Reference numerals:

[0021] 1. Oil chamber; 2. Oil inlet; 3. Engine oil return port; 4. Pressure control valve; 41. Valve body; 411. First end; 412. Second end; 42. Valve core; 5. Oil outlet; 6. Oil return port; 7. Plunger; 71. Oil outlet valve column; 72. Oil return valve column; 73. Push valve column; 8. Elastic connecting piece. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0023] See also Figure 1, which shows an example of the oil pump provided by the utility model.

[0024] As can be seen from the figure, the oil pump of this example is used to cooperate with the engine, and includes an oil chamber 1, an oil inlet 2 and an engine oil return port 3, and also includes a pressure control valve 4.

[0025] The pressure control valve 4 includes a valve body 41 and a valve core 42 built into the valve body 41. The valve body 41 is provided with an oil outlet 5 and an oil return port 6. The oil outlet 5 is connected to the oil chamber 1 and the engine respectively, and the oil return port 6 is connected to the oil chamber 1. The first end 411 of the valve body 41 near the oil outlet 5 is connected to the engine oil return port 3, so that the oil pumped by the oil chamber 1 can be delivered to the engine through the oil outlet 5. Part of the oil returns from the engine oil return port 3 and enters the valve body 41 through the first end 411 and returns to the oil chamber 1 through the oil return port 6, so as to reduce the oil suction amount of the oil chamber 1 and reduce energy consumption.

[0026] Furthermore, the valve core 42 is configured to be able to move axially in the valve body 41 to control the opening and closing states of the oil outlet 5 and the oil return port 6, and to interlock the opening and closing states of the oil outlet 5 and the oil return port 6, so that the returning oil pressure can be converted into a thrust on the valve core 42, regulating the engine oil circuit pressure. The valve core 42 moves to close the oil outlet 5 and open the oil return port 6 at the same time, ensuring the effective reflux of the returning oil, thereby improving the reliability of the oil pump.

[0027] Among them, the valve core 42 of the pressure control valve 4 is built into the valve body 41. The valve core 42 includes a plunger 7 and an elastic connector 8. One end of the elastic connector 8 is connected to the plunger 7, and the other end is connected to the second end 412 of the valve body 41, so that the return oil output from the engine return oil port 3 enters the interior of the valve body 41 from the first end 411 of the valve body 41, generating a thrust on the plunger 7, pushing the plunger 7 to move toward the second end 412, and at the same time compressing the elastic connector 8 to adjust the oil circuit pressure.

[0028] Furthermore, the plunger 7 is respectively provided with an oil outlet valve column 71 for cooperating with the oil outlet 5 and an oil return valve column 72 for cooperating with the oil return port 6, and the diameters of the oil outlet valve column 71 and the oil return valve column 72 are adapted to the valve body 41, so that when the plunger 7 moves axially in the valve body 41, it can drive the oil outlet valve column 71 and the oil return valve column 72 to move synchronously, so that the oil outlet valve column 71 and the oil return valve column 72 cooperate with the oil outlet 5 and the oil return port 6 respectively, control the opening and closing states of the oil outlet 5 and the oil return port 6, and thus control the output and return of the engine oil.

[0029] At the same time, the distance between the oil outlet valve column 71 and the oil return valve column 72 is greater than the distance between the oil outlet port 5 and the oil return port 6, so that the oil outlet valve column 71 and the oil return valve column 72 cooperate with the oil outlet port 5 and the oil return port 6 respectively, and can control the opening and closing states of the oil outlet port 5 and the oil return port 6 to be interlocked, so as to ensure stable output and stable reflux of the engine oil.

[0030] Combine Figure 2 As an example, when the plunger 7 moves axially in the valve body 41 toward the first end 411, it will drive the oil outlet valve column 71 and the oil return valve column 72 to move axially toward the first end 411 synchronously, so that the oil return valve column 72 moves to the oil return port 6 and closes the oil return port. Since the distance between the oil outlet valve column 71 and the oil return valve column 72 is greater than the distance between the oil outlet 5 and the oil return port 6, at this time, the oil outlet valve column 71 moves to the front end area of ​​the oil outlet port 5 to open the oil outlet, so that the oil pumped by the oil chamber 1 can be output from the oil outlet port 5 to the engine, and will not flow in the valve body 41 and flow out from the oil return port 6, so as to ensure the stable output of the pumped oil.

[0031] Combine Figure 3 The oil return port 6 is opened by the piston 71, and the return port 6 is opened.

[0032] At the same time, the return oil flows back to the oil chamber 1 from the oil return port 6, which can effectively reduce the amount of oil inside the oil pan sucked into the oil chamber 1 from the oil inlet 2, thereby reducing the energy consumption of the engine.

[0033] In some embodiments, in order to effectively control the output and return of engine oil and adjust the pressure of the engine oil circuit at the same time, the width of the oil outlet valve column 71 is configured to be smaller than the diameter of the oil outlet port 5, and the width of the oil return valve column 72 is configured to be larger than the diameter of the oil return port 6, so that the plunger 7 only needs to make a slight axial movement in the valve body 41 facing the first end 411 to create a gap between the oil outlet valve column 71 and the oil outlet port 5, open the oil outlet port 5, and facilitate the effective output of pumped engine oil. The return of engine oil requires a large thrust to be applied to the plunger 7, pushing the plunger 7 to make a large axial movement facing the second end 412, so as to drive the oil return valve column 72 to the front end area of ​​the oil return port 6, open the oil return port 6, and allow the return oil to reflux, thereby effectively adjusting the oil circuit pressure. At the same time, it can also allow the return oil to slowly enter the oil return port 6, ensuring the stable return of the return oil.

[0034] Furthermore, a push valve column 73 is provided at the end of the plunger 7 that cooperates with the engine oil return port 3. The diameter of the push valve column 73 is smaller than the oil outlet valve column 71 and the oil return valve column 72, so that the pressure of the returning oil first acts on the push valve column 73 and is transmitted to the oil outlet valve column 71 and the oil return valve column 72 through the push valve column 73, so as to ensure the uniform distribution and stable transmission of the returning oil pressure, effectively improve the reflux stability, and reduce energy consumption.

[0035] The oil pump provided by the present invention is thus formed. Through the cooperation of the plunger 7 of the pressure control valve 4, the elastic connecting member 8, the oil outlet 5 and the oil return port 6, the pressure of the oil circuit can be adjusted, and the oil can be stably returned to the oil chamber 1, thereby reducing the amount of oil sucked into the oil chamber 1 from the oil pan.

[0036] The present invention also provides an engine, which includes an oil pump constructed according to the above solution and can effectively reduce engine energy consumption.

[0037] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An oil pump, used to cooperate with an engine, comprising an oil chamber, an oil inlet and an engine oil return port, characterized in that: Also includes A pressure control valve, comprising a valve body and a valve core built into the valve body, The valve body is provided with an oil outlet and an oil return port, the oil outlet is connected to the oil chamber and the engine respectively, the oil return port is connected to the oil chamber, and the first end of the valve body close to the oil outlet is connected to the engine oil return port. The valve core is configured to be axially movable in the valve body to control the opening and closing states of the oil outlet and the oil return port, and to interlock the opening and closing states of the oil outlet and the oil return port.

2. The oil pump according to claim 1, characterized in that The valve core includes a plunger and an elastic connecting member, one end of the elastic connecting member is connected to the plunger, and the other end is connected to the second end of the valve body.

3. The oil pump according to claim 2, characterized in that The plunger is provided with an oil outlet valve column for cooperating with the oil outlet port and an oil return valve column for cooperating with the oil return port, respectively. The diameters of the oil outlet valve column and the oil return valve column are adapted to the valve body.

4. The oil pump according to claim 3, characterized in that The distance between the oil outlet valve column and the oil return valve column is greater than the distance between the oil outlet and the oil return port.

5. The oil pump according to claim 3, characterized in that The width of the oil outlet valve column is smaller than the diameter of the oil outlet.

6. The oil pump according to claim 3, characterized in that The width of the oil return valve column is greater than the diameter of the oil return port.

7. The oil pump according to claim 3, characterized in that The end of the plunger that cooperates with the engine oil return port is provided with a push valve column, and the diameter of the push valve column is smaller than the oil outlet valve column and the oil return valve column.

8. An engine, characterized in that: The oil pump comprises the oil pump according to any one of claims 1 to 7.

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