Lubricating system capable of shortening oil outlet time of externally-hung oil pump

Abstract

The invention provides a lubricating system capable of shortening the oil outlet time of an externally-hung oil pump, and relates to the technical field of engine lubrication, the lubricating system comprises an oil pump and an oil tank, an oil pumping pipe is arranged on an inlet of the oil pump, the lower end of the oil pumping pipe is immersed in the oil tank, and the lubricating system further comprises a pre-supply pump; an inlet of the pre-supply pump is communicated with the upper end of the oil pumping pipe, and an outlet of the pre-supply pump is communicated with the oil tank. In the application, the pre-supply pump is additionally arranged at the inlet of the oil pump to assist the oil pump in pumping air in the oil pumping pipe between the pump and the liquid level in the oil tank, so that the oil pump can quickly pump oil, lubricating oil is conveyed to each kinematic pair of an engine in the shortest time, and the lubricating effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of engine lubrication, and in particular to a lubrication system capable of shortening the oil delivery time of an external oil pump. Background Art

[0002] The external oil pump draws the oil in the oil tank to the engine case through the oil extraction pipe for lubrication. Before the engine is started, there is a large amount of air in the oil extraction pipe. Since the engine oil pump is mechanically driven by gears, the flow rate is 1650L / min. The initial speed of the engine when the starter motor is turning on the engine is about 80 to 120 rpm. At this time, due to the low speed, the mechanical oil pump has no air suction ability at this speed, resulting in the oil pump being unable to discharge oil within the initial 3 seconds. Summary of the invention

[0003] In order to overcome the existing deficiencies, an embodiment of the present application provides a lubrication system that can shorten the oil delivery time of an external oil pump, which can solve the problems mentioned in the above-mentioned background technology.

[0004] The technical solution adopted by the embodiment of the present application to solve its technical problem is: a lubrication system that can shorten the oil discharge time of an external oil pump, including an oil pump and an oil tank, an oil extraction pipe is provided on the inlet of the oil pump, and the lower end of the oil extraction pipe is immersed in the oil tank, and also includes a pre-supply pump, the inlet of the pre-supply pump is connected to the upper end of the oil extraction pipe, and the outlet of the pre-supply pump is connected to the oil tank.

[0005] In a specific embodiment, the outlet of the oil pump is connected to a main oil channel.

[0006] In a specific implementation, a one-way valve is provided between the main oil channel and the outlet of the oil pump.

[0007] In a specific embodiment, the pre-supply pump is a high-speed electronic oil delivery pump.

[0008] In a specific embodiment, the inlet of the pre-supply pump is provided with an air extraction pipe, and the air extraction pipe is connected with the upper end of the oil extraction pipe.

[0009] In a specific embodiment, the inlet of the oil pump is provided with a tee which is connected with the air extraction pipe and the upper end of the oil extraction pipe.

[0010] In a specific embodiment, the outlet of the pre-supply pump is provided with a return pipe, and the return pipe is connected to the oil tank.

[0011] In a specific implementation, a partition is provided in the oil tank, a through hole is opened at the lower end of the partition, and the lower end of the return pipe and the lower end of the oil extraction pipe are respectively located on both sides of the partition.

[0012] The advantages of the embodiments of the present application are:

[0013] Installing a pre-supply pump at the inlet of the oil pump can assist the oil pump in extracting air from the oil extraction pipe between the pump and the liquid level in the oil tank. This can enable the oil pump to discharge oil quickly and deliver the lubricating oil to various moving parts of the engine in the shortest time, thereby improving the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a lubrication system that can shorten the oil delivery time of an external oil pump provided in an embodiment of the present application;

[0015] Figure 2 A front view of a lubrication system that can shorten the oil delivery time of an external oil pump provided in an embodiment of the present application;

[0016] Figure 3 A top view of a lubrication system that can shorten the oil delivery time of an external oil pump provided in an embodiment of the present application;

[0017] Figure 4 A side view of a lubrication system that can shorten the oil delivery time of an external oil pump provided in an embodiment of the present application.

[0018] In the figure: 10 - oil pump; 20 - oil tank; 30 - oil extraction pipe; 40 - pre-supply pump; 50 - main oil channel; 60 - check valve; 70 - air extraction pipe; 80 - three-way; 90 - return pipe; 100 - partition. DETAILED DESCRIPTION

[0019] The technical solution in the embodiment of the present application is to solve the problems mentioned in the above background technology, and the overall idea is as follows:

[0020] See also Figure 1-Figure 4 A lubrication system capable of shortening the oil discharge time of an external oil pump comprises an oil pump 10 and an oil tank 20. An oil extraction pipe 30 is arranged on the inlet of the oil pump 10, and the lower end of the oil extraction pipe 30 is immersed in the oil tank 20. The system also comprises a pre-supply pump 40, and the inlet of the pre-supply pump 40 is connected with the upper end of the oil extraction pipe 30, and the outlet of the pre-supply pump 40 is connected with the oil tank 20. The pre-supply pump 40 is installed at the inlet of the oil pump 10 to assist the oil pump 10 in extracting the air in the oil extraction pipe 30 between the pump and the liquid level in the oil tank 20, so that the oil pump 10 can discharge oil quickly, and the lubricating oil can be delivered to each moving pair of the engine in the shortest time, thereby improving the lubrication effect.

[0021] See also Figure 1-Figure 4 The outlet of the oil pump 10 is connected to a main oil gallery 50. Here, the main oil gallery 50 is connected to the engine case to supply the oil to each moving pair of the engine.

[0022] See also Figure 1-Figure 4A one-way valve 60 is provided between the main oil passage 50 and the outlet of the oil pump 10. Here, when the pre-supply pump 40 is working, at the initial stage of the oil pump 10 starting, the oil pump 10 has no suction capability. At this time, the pre-supply pump 40 will simultaneously suck air from the oil pump 10 and the oil extraction pipe 30. The one-way valve 60 is provided at the outlet of the oil pump 10 to prevent air from passing through the oil pump 10 and being sucked away by the pre-supply pump 40, thereby ensuring the suction capability of the pre-supply pump 40 to the oil extraction pipe 30.

[0023] See also Figure 1-Figure 4 The pre-supply pump 40 is a high-speed electronic oil pump. Although the electronic oil pump has a small flow rate, it starts quickly and can assist the main oil pump in sucking away the air in front of the pump in a short time, and enter the normal working state in advance. When the engine is operating normally, the electronic oil pump is automatically disconnected, and the main oil pump is the main oil supply component.

[0024] See also Figure 1-Figure 4 The inlet of the pre-supply pump 40 is provided with an air extraction pipe 70, which is communicated with the upper end of the oil extraction pipe 30. Here, the length of the air extraction pipe 70 is as short as possible to reduce the total amount of air to be extracted.

[0025] See also Figure 1-Figure 4 The inlet of the oil pump 10 is provided with a tee 80 which is connected with the upper end of the air extraction pipe 70 and the oil extraction pipe 30. Here, the tee 80 is installed and fixed at the inlet of the oil pump 10, and then the air extraction pipe 70 and the oil extraction pipe 30 are connected to the tee 80.

[0026] See also Figure 1-Figure 4 The outlet of the pre-supply pump 40 is provided with a return pipe 90, which is connected to the oil tank 20. Here, the pre-supply pump 40 and the oil tank 20 form a closed loop. On the one hand, the air extracted by the pre-supply pump 40 flows back to the oil tank 20 through the return pipe 90 to keep the air pressure in the oil tank 20 balanced. On the other hand, a small amount of oil can be easily extracted during the air extraction process, which can be returned to the oil tank 20 through the return pipe 90. In another embodiment, the electronic oil pump is connected in parallel with the oil pump 10 to pump oil together.

[0027] See also Figure 1-Figure 4 A partition 100 is provided in the oil tank 20, and a through hole is opened at the lower end of the partition 100. The lower end of the return pipe 90 and the lower end of the oil extraction pipe 30 are respectively located on both sides of the partition 100. Here, when the return pipe 90 sprays gas or oil, bubbles are easily generated in the oil tank 20. The partition 100 can separate the bubble area from the oil extraction pipe 30 to prevent the oil extraction pipe 30 from extracting air and affecting the oil pumping effect.

[0028] When the present application is used: when the engine is started, the pre-supply pump 40 is started at the same time, and the air in the oil extraction pipe 30 is sucked away by the high starting speed of the pre-supply pump 40, and returned to the oil tank 20 through the return pipe 90, the engine oil can reach the oil pump 10 in advance, and be pumped into the main oil channel 50 by the oil pump 10 to provide lubrication for the various moving parts of the engine, and the pre-supply pump 40 stops working when the oil pump 10 reaches the normal speed, at which time the oil pump 10 is the main oil supply component.

[0029] In summary, installing a pre-supply pump 40 at the inlet of the oil pump 10 can assist the oil pump 10 in extracting air from the oil extraction pipe 30 between the pump and the liquid level in the oil tank 20, so that the oil pump 10 can quickly discharge oil and transport the lubricating oil to various moving parts of the engine in the shortest time, thereby improving the lubrication effect.

[0030] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A lubrication system capable of shortening the oil discharge time of an external oil pump, comprising an oil pump and an oil tank, wherein an oil extraction pipe is arranged on the inlet of the oil pump, and the lower end of the oil extraction pipe is immersed in the oil tank, characterized in that: It also includes a pre-supply pump, the inlet of which is communicated with the upper end of the oil extraction pipe, and the outlet of which is communicated with the oil tank.

2. The lubrication system capable of shortening the oil delivery time of an external oil pump as claimed in claim 1, characterized in that: The outlet of the oil pump is connected to the main oil channel.

3. The lubrication system capable of shortening the oil delivery time of an external oil pump as claimed in claim 2, characterized in that: A one-way valve is arranged between the main oil passage and the outlet of the oil pump.

4. The lubrication system capable of shortening the oil delivery time of an external oil pump as claimed in claim 3, characterized in that: The pre-supply pump is a high-speed electronic oil delivery pump.

5. The lubrication system capable of shortening the oil delivery time of an external oil pump as claimed in claim 4, characterized in that: The inlet of the pre-supply pump is provided with an air extraction pipe, and the air extraction pipe is communicated with the upper end of the oil extraction pipe.

6. The lubrication system capable of shortening the oil delivery time of an external oil pump as claimed in claim 5, characterized in that: The inlet of the oil pump is provided with a tee which is connected with the air extraction pipe and the upper end of the oil extraction pipe.

7. The lubrication system capable of shortening the oil delivery time of an external oil pump as claimed in claim 6, characterized in that: The outlet of the pre-supply pump is provided with a return pipe, and the return pipe is communicated with the oil tank.

8. The lubrication system capable of shortening the oil delivery time of an external oil pump as claimed in claim 7, characterized in that: A partition is arranged in the oil tank, a through hole is opened at the lower end of the partition, and the lower end of the return pipe and the lower end of the oil extraction pipe are respectively located on both sides of the partition.

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