Lubricating system special for hybrid power

Abstract

The invention discloses a lubricating system special for hybrid power, which is characterized in that an upper main bearing bush inner groove is formed in the inner wall of an upper main bearing bush, and the upper main bearing bush inner groove is communicated with an air cylinder body inclined oil duct; notches in the two ends of the lower main bearing bush are formed in the inner sides of the two ends of the lower main bearing bush. The main bearing cover pressure-bearing surface square grooves are formed in the pressure-bearing surfaces at the two ends of the main bearing cover and are communicated with the notches in the two ends of the lower main bearing bush; the main bearing cover straight oil ducts are arranged on the pressure-bearing surfaces at the two ends of the main bearing cover and are communicated with the main bearing cover pressure-bearing surface square grooves; the main bearing cover transverse oil duct is arranged in the main bearing cover and is communicated with the main bearing cover straight oil duct; the lower main bearing bush side face oil passing hole is formed in the side face of the lower main bearing bush and communicated with the main bearing cover transverse oil way. Therefore, by arranging the Y-shaped oil duct crankshaft, lubrication of the bearing bush is improved, and abrasion of the bearing bush is reduced.

Description

Technical Field

[0001] The invention relates to the field of engine design and manufacturing, and in particular to a hybrid-specific lubrication system. Background Art

[0002] As society pays more and more attention to environmental protection, new energy vehicles are gradually becoming the mainstream of the automotive industry. As an important technology of new energy vehicles, the lubrication system design of the hybrid system is crucial.

[0003] New energy vehicles are an important means to deal with the global energy crisis and environmental pollution. Hybrid systems are widely used as a technology for efficient energy utilization. As a core component of the hybrid system, the lubrication system has an important impact on the performance and life of the hybrid system.

[0004] The role of the lubrication system in the hybrid system mainly includes reducing friction resistance, cooling transmission components, and preventing components from being damaged due to excessive wear. Liquid lubricants, such as engine oil, are usually used in hybrid systems. The lubricant is delivered to the engine, motor, transmission system, etc. through an oil pump to form a uniform lubricating film, reduce friction between components, and improve mechanical efficiency.

[0005] In a hybrid system, the working principle of the lubrication system can be summarized as follows:

[0006] Reduce frictional resistance: The lubricating film formed by the lubricant can effectively reduce the frictional resistance between mechanical parts and improve energy conversion efficiency.

[0007] Cooling transmission components: During the operation of the hybrid system, components such as the engine and motor will generate a large amount of heat. The lubrication system cools the surface of the transmission components to prevent the components from being damaged due to high temperature.

[0008] Prevent wear: The lubrication system can prevent direct contact between components, reduce wear, and extend the service life of the hybrid system.

[0009] The lubrication system of the hybrid system should pay attention to the following points:

[0010] Choose the right lubricant: The choice of lubricant directly affects the performance of the lubrication system. In a hybrid system, a lubricant that can maintain stable performance under high temperature and high pressure should be selected to ensure reliable operation of the system.

[0011] Reasonable design of the oil circuit system: The design of the oil circuit system should take into account the fluidity and pressure distribution of the lubricant to ensure that the lubricant can quickly reach each lubrication point and maintain appropriate pressure to prevent lubrication dead corners and oil circuit blockage.

[0012] Design an effective cooling system: Since the hybrid system generates a lot of heat when working, the design of the cooling system is crucial. By using radiators, fans and other equipment, the temperature of lubricants and components such as engines and motors can be effectively reduced to ensure the stability and reliability of the system.

[0013] Consider energy efficiency and environmental protection: In the design of lubrication systems, the energy efficiency and environmental performance of lubricants should be considered. Select lubricants with low friction coefficient and high energy efficiency, and use recyclable and renewable materials in system design to reduce the impact on the environment.

[0014] Implement intelligent management: Use advanced sensors and control systems to achieve intelligent management of the lubrication system. By real-time monitoring of system conditions, adjust the lubricant supply and working pressure to improve the system's adaptability and efficiency.

[0015] With the continuous development of new energy vehicle technology, the design of hybrid system lubrication system will also face new challenges and opportunities. Future development trends mainly include:

[0016] Development of efficient lubricants: With the continuous advancement of materials science and chemical engineering, more efficient and environmentally friendly lubricants will be developed to improve the energy efficiency and reliability of hybrid systems.

[0017] Intelligent lubrication system: Utilize artificial intelligence and big data technologies to realize intelligent management of the hybrid system lubrication system, monitor the system operation status in real time, predict the health status of components, perform maintenance in advance, and reduce the failure rate.

[0018] Sustainable development: Strengthen the consideration of sustainable development in the design of lubrication systems, adopt recyclable and renewable materials, reduce energy consumption and environmental impact, and promote the sustainable development of the new energy vehicle industry.

[0019] Multi-energy synergy: The design of the hybrid system lubrication system should take into account the synergy between different energy sources to achieve more efficient energy conversion and improve the overall performance of the entire hybrid system.

[0020] The design of the lubrication system of the hybrid system of new energy vehicles is a key factor in ensuring the stable operation of the hybrid system and extending its service life. By deeply analyzing the working principle and design points of the lubrication system, we can better understand the working mechanism of the hybrid system and provide strong support for improving the performance of the hybrid system. In the future, with the continuous advancement of science and technology, the design of the hybrid system lubrication system will continue to develop in the direction of more efficient, intelligent and sustainable development, contributing to the development of new energy vehicle technology.

[0021] However, in the lubrication systems of many hybrid systems, it is common that when the engine is started or idling, due to low oil channel pressure, the internal moving parts are insufficiently lubricated, which is prone to wear failure.

[0022] like Figure 1 As shown, the prior art only provides an oblique oil passage 1 between the main journal and the crank journal, and does not provide a separate oil passage on the main journal, thus resulting in insufficient lubrication of the main journal.

[0023] like Figure 2 As shown, the thrust plate 1 of the prior art has no forced lubrication, the hybrid power is frequently started and stopped, and the clutch is frequently fitted and opened, which has a great impact on the thrust plate and is extremely easy to wear.

[0024] like Figure 3 As shown, the lower main bearing 1 of the prior art is not provided with any structure for enhancing lubrication, resulting in insufficient lubrication of the lower bearing.

[0025] like Figure 4 and Figure 5 As shown, the piston cooling nozzle of the prior art is of a normally open design with a fixed injection pressure. When the engine is idling, the pressure in the main oil channel is often insufficient, and the normal lubrication requirements of the moving parts cannot be guaranteed.

[0026] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0027] The object of the present invention is to provide a hybrid-specific lubrication system, which can increase the lubrication of bearings and reduce bearing wear by providing a Y-type oil channel crankshaft.

[0028] To achieve the above-mentioned purpose, the present invention provides a hybrid-specific lubrication system, comprising an inner groove of an upper main bearing, notches at both ends of a lower main bearing, a square groove on a pressure-bearing surface of a main bearing cap, a straight oil passage of a main bearing cap, a transverse oil passage of a main bearing cap, and an oil hole on a side of a lower main bearing; the inner groove of the upper main bearing is arranged on the inner wall of the upper main bearing, and the inner groove of the upper main bearing is communicated with an oblique oil passage of a cylinder block; notches at both ends of the lower main bearing are arranged on the inner side of both ends of the lower main bearing, and the oblique oil passage of the cylinder block is communicated with the inner groove of the upper main bearing; the main bearing cap bearing The pressure surface square grooves are arranged at the pressure surfaces at both ends of the main bearing caps, and the pressure surface square grooves of the main bearing caps are communicated with the notches at both ends of the lower main bearing shells; the main bearing cap straight oil passages are arranged at the pressure surfaces at both ends of the main bearing caps, and the main bearing cap straight oil passages are communicated with the pressure surface square grooves of the main bearing caps; the main bearing cap transverse oil passages are arranged in the main bearing caps, and the main bearing cap transverse oil passages are communicated with the main bearing cap straight oil passages; the side oil holes of the lower main bearing shells are arranged at the side surfaces of the lower main bearing shells, and the side oil holes of the lower main bearing shells are communicated with the transverse oil passages of the main bearing caps.

[0029] In a preferred embodiment, the lubricating oil is provided from the inclined oil passage of the cylinder block through the inner groove of the upper main bearing, the notches at both ends of the lower main bearing, the square groove on the pressure surface of the main bearing cover, the straight oil passage of the main bearing cover, the horizontal oil passage of the main bearing cover and the oil hole on the side of the lower main bearing to provide forced lubrication for the thrust bearing.

[0030] In a preferred embodiment, lubricating oil enters the inner wall of the lower main bearing from the inclined oil passage of the cylinder block through the inner groove of the upper main bearing and the notches at both ends of the lower main bearing to provide lubrication.

[0031] In a preferred embodiment, the hybrid-specific lubrication system further includes a plurality of piston cooling nozzles, which are arranged at cooling and lubricating locations of a plurality of pistons in the lubrication system.

[0032] In a preferred embodiment, each piston cooling nozzle includes a control valve, which can be opened under certain pressure conditions to ensure that the pressure in the main oil channel meets the lubrication requirements when the engine is idling.

[0033] In a preferred embodiment, the hybrid-specific lubrication system further includes a main journal straight oil passage, which is disposed on the main journal, and the main journal straight oil passage is connected to the main journal oblique oil passage inside the main journal.

[0034] In a preferred embodiment, the main journal straight oil passage has an oil outlet on the surface of the main journal.

[0035] In a preferred embodiment, the size of the notches at both ends of the lower main bearing is 2×0.8 mm, and the diameter of the straight oil passage of the main bearing cap is The diameter of the main bearing cap transverse oil passage is

[0036] Compared with the prior art, the hybrid-specific lubrication system of the present invention has the following beneficial effects: by arranging the inner groove of the upper main bearing, the notches at both ends of the lower main bearing, the square groove on the pressure surface of the main bearing cover, the straight oil passage of the main bearing cover, the transverse oil passage of the main bearing cover and the oil hole on the side of the lower main bearing, the lubricating oil from the inclined oil passage of the cylinder body passes through the inner groove of the upper main bearing, the notches at both ends of the lower main bearing, the square groove on the pressure surface of the main bearing cover, the straight oil passage of the main bearing cover, the transverse oil passage of the main bearing cover and the oil hole on the side of the lower main bearing to provide forced lubrication for the thrust bearing; A straight oil passage and an inclined oil passage are provided to form a Y-type oil passage, so as to increase the lubrication of the bearing and reduce the wear of the bearing; notches are added at both ends of the lower main bearing at the two end surfaces, and the notches are connected with the inner wall of the lower main bearing, so that the lubricating oil can enter the inner wall of the lower main bearing from the inclined oil passage of the cylinder block through the inner groove of the upper main bearing and the notches at both ends of the lower main bearing to provide lubrication; a valve design is added to the original piston cooling nozzle, and the control valve can be opened only under a certain pressure, so as to ensure the pressure requirement of the main oil passage when the engine is idling and ensure the lubrication of the moving parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of an oblique oil passage between a main journal and a crank journal according to an embodiment of the prior art;

[0038] Figure 2 It is a structural schematic diagram of a thrust plate according to an embodiment of the prior art;

[0039] Figure 3 It is a structural schematic diagram of a lower main bearing shell according to an embodiment of the prior art;

[0040] Figure 4 It is a schematic structural diagram of a cooling nozzle according to an embodiment of the prior art;

[0041] Figure 5 It is a schematic cross-sectional structure diagram of a cooling nozzle according to an embodiment of the prior art.

[0042] Figure 6 is a schematic diagram of the structural arrangement of a lubrication system according to an embodiment of the present invention;

[0043] Figure 7 is a schematic diagram of the three-dimensional structural arrangement of a lubrication system according to an embodiment of the present invention;

[0044] Figure 8 is a schematic diagram of a three-dimensional cross-sectional structural arrangement of a lubrication system according to an embodiment of the present invention;

[0045] Fig. 9 is a schematic diagram of a top view of a main bearing cap according to an embodiment of the present invention;

[0046] Fig.10 is a schematic diagram of the three-dimensional structure of an upper main bearing according to an embodiment of the present invention;

[0047] Fig.11 is a schematic diagram of the three-dimensional structure of a lower main bearing according to an embodiment of the present invention;

[0048] Fig.12 is a schematic diagram of a top view of a main bearing cap according to an embodiment of the present invention;

[0049] Figure 13-14 is a schematic diagram of a three-dimensional structure of a main bearing cap according to an embodiment of the present invention;

[0050] Fig.15 is a schematic diagram of the three-dimensional structure of a lower main bearing according to an embodiment of the present invention;

[0051] Fig.16 is a schematic diagram of the arrangement of a nozzle with a valve according to an embodiment of the present invention;

[0052] Fig.17is a schematic diagram of a three-dimensional structure of a nozzle with a valve according to an embodiment of the present invention;

[0053] Fig.18 is a schematic cross-sectional structural diagram of a nozzle with a valve according to an embodiment of the present invention;

[0054] Fig.19 Schematic diagram of the structure of a Y-type oil passage according to an embodiment of the present invention.

[0055] Description of main reference numerals:

[0056] 1- inclined oil passage of cylinder block, 2- inner groove of upper main bearing, 3- notches at both ends of lower main bearing, 4- square groove on pressure surface of main bearing cap, 5- straight oil passage of main bearing cap, 6- horizontal oil passage of main bearing cap, 7- oil hole on side of lower main bearing, 8- inclined oil passage of main journal, 9- straight oil passage of main journal, 100- crankshaft, 200- piston cooling nozzle, 201- control valve. DETAILED DESCRIPTION

[0057] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0058] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0059] like Figures 6 to 19 As shown, a hybrid-specific lubrication system according to a preferred embodiment of the present invention comprises an upper main bearing inner groove 2, notches 3 at both ends of the lower main bearing, a square groove 4 on the pressure surface of the main bearing cover, a straight oil passage 5 on the main bearing cover, a transverse oil passage 6 on the main bearing cover, and an oil hole 7 on the side of the lower main bearing; the upper main bearing inner groove 2 is arranged on the inner wall of the upper main bearing, and the upper main bearing inner groove 2 is connected to the cylinder body oblique oil passage 1; the notches 3 at both ends of the lower main bearing are arranged on the inner side of both ends of the lower main bearing, and the cylinder body oblique oil passage 1 is connected to the upper main bearing inner groove 2; the main bearing cover The square grooves 4 on the pressure surface are arranged on the pressure surfaces at both ends of the main bearing caps, and the square grooves 4 on the pressure surface of the main bearing caps are communicated with the notches 3 on both ends of the lower main bearing shells; the straight oil passages 5 on the main bearing caps are arranged on the pressure surfaces at both ends of the main bearing caps, and the straight oil passages 5 on the main bearing caps are communicated with the square grooves 4 on the pressure surface of the main bearing caps; the transverse oil passages 6 on the main bearing caps are arranged in the main bearing caps, and the transverse oil passages 6 on the main bearing caps are communicated with the straight oil passages 5 on the main bearing caps; the oil holes 7 on the side surfaces of the lower main bearing shells are arranged on the side surfaces of the lower main bearing shells, and the oil holes 7 on the side surfaces of the lower main bearing shells are communicated with the transverse oil passages 6 on the main bearing caps.

[0060] See also Figures 6 to 14In some embodiments, the lubricating oil is provided from the inclined oil passage 1 of the cylinder block through the inner groove 2 of the upper main bearing, the notches 3 at both ends of the lower main bearing, the square groove 4 on the pressure surface of the main bearing cover, the straight oil passage 5 of the main bearing cover, the horizontal oil passage 6 of the main bearing cover, and the oil hole 7 on the side of the lower main bearing to provide forced lubrication for the thrust bearing.

[0061] See also Fig.15 In some embodiments, one side of the notch 3 at both ends of the lower main bearing is connected to the inner wall of the lower main bearing, so that the lubricating oil can enter the inner wall of the lower main bearing from the inclined oil channel 1 of the cylinder block through the inner groove 2 of the upper main bearing and the notches 3 at both ends of the lower main bearing to provide lubrication.

[0062] See also Figures 15 to 18 In some embodiments, the hybrid-specific lubrication system further includes a plurality of piston cooling nozzles 200, which are disposed at the cooling and lubrication locations of a plurality of pistons in the lubrication system. Each piston cooling nozzle 200 includes a control valve 201, which can be opened under certain pressure conditions to ensure that the pressure in the main oil channel meets the lubrication requirements when the engine is idling.

[0063] See also Fig.19 In some embodiments, the hybrid-specific lubrication system further includes a main journal straight oil passage 9, which is disposed on the main journal of the crankshaft 100 and communicates with the main journal oblique oil passage 8 in the main journal. The main journal straight oil passage 9 has an oil outlet on the surface of the main journal, which can enhance the lubrication effect.

[0064] In some embodiments, the size of the notches 3 at both ends of the lower main bearing shell of this embodiment is 2×0.8 mm, and the diameter of the straight oil passage 5 of the main bearing cap is The diameter of the main bearing cap transverse oil passage 6 is The above-mentioned dimensional data are merely illustrative, and the present invention is not limited thereto.

[0065] In summary, the hybrid-specific lubrication system of the present invention has the following advantages: by providing the inner groove of the upper main bearing, the notches at both ends of the lower main bearing, the square groove on the pressure surface of the main bearing cover, the straight oil passage of the main bearing cover, the transverse oil passage of the main bearing cover and the oil hole on the side of the lower main bearing, the lubricating oil is forced to lubricate the thrust bearing from the inclined oil passage of the cylinder block through the inner groove of the upper main bearing, the notches at both ends of the lower main bearing, the square groove on the pressure surface of the main bearing cover, the straight oil passage of the main bearing cover, the transverse oil passage of the main bearing cover and the oil hole on the side of the lower main bearing; a straight oil passage is added to the main journal The oil passage and the inclined oil passage form a Y-type oil passage, which increases the lubrication of the bearing and reduces the wear of the bearing; notches are added at both ends of the lower main bearing at the two end surfaces, and the notches are connected to the inner wall of the lower main bearing, so that the lubricating oil can enter the inner wall of the lower main bearing from the inclined oil passage of the cylinder block through the inner groove of the upper main bearing and the notches at both ends of the lower main bearing to provide lubrication; a valve design is added to the original piston cooling nozzle, and the control valve can only be opened under a certain pressure, so as to ensure the pressure requirement of the main oil passage when the engine is idling and ensure the lubrication of moving parts.

[0066] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A hybrid-specific lubrication system, characterized in that: include: An upper main bearing inner groove, which is arranged at the inner wall of the upper main bearing, and the upper main bearing inner groove is communicated with the inclined oil passage of the cylinder body; Notches at both ends of the lower main bearing are arranged on the inner sides of both ends of the lower main bearing, and the cylinder body inclined oil passage is connected with the inner groove of the upper main bearing; The main bearing cap pressure surface square groove is arranged at the pressure surface at both ends of the main bearing cap, and the main bearing cap pressure surface square groove is connected with the notches at both ends of the lower main bearing shell; A main bearing cap straight oil passage, which is arranged at the pressure-bearing surfaces at both ends of the main bearing cap, and the main bearing cap straight oil passage is connected to the square groove of the pressure-bearing surface of the main bearing cap; a main bearing cap transverse oil passage, which is disposed in the main bearing cap, the main bearing cap transverse oil passage being in communication with the main bearing cap straight oil passage; and The oil hole on the side of the lower main bearing is arranged on the side of the lower main bearing, and the oil hole on the side of the lower main bearing is connected to the transverse oil passage of the main bearing cap.

2. The hybrid-specific lubrication system according to claim 1, characterized in that: The lubricating oil is provided from the inclined oil passage of the cylinder body through the inner groove of the upper main bearing, the notches at both ends of the lower main bearing, the square groove on the pressure surface of the main bearing cover, the straight oil passage of the main bearing cover, the horizontal oil passage of the main bearing cover and the oil hole on the side of the lower main bearing to provide forced lubrication for the thrust bearing.

3. The hybrid-specific lubrication system according to claim 1, characterized in that: The lubricating oil enters the inner wall of the lower main bearing shell from the inclined oil passage of the cylinder body through the inner groove of the upper main bearing shell and the notches at both ends of the lower main bearing shell to provide lubrication.

4. The hybrid-specific lubrication system according to claim 1, characterized in that: It also includes a plurality of piston cooling nozzles, which are arranged at the cooling and lubrication locations of the plurality of pistons in the lubrication system.

5. The hybrid-specific lubrication system according to claim 4, characterized in that: Each of the piston cooling nozzles comprises a control valve, which can be opened under certain pressure conditions to ensure that the pressure of the main oil channel meets the lubrication requirements when the engine is idling.

6. The hybrid-specific lubrication system according to claim 1, characterized in that: It also includes a main journal straight oil passage, which is arranged on the main journal, and the main journal straight oil passage is connected with the main journal oblique oil passage in the main journal.

7. The hybrid-specific lubrication system according to claim 6, characterized in that: The main journal straight oil passage has an oil outlet on the surface of the main journal.

8. The hybrid-specific lubrication system according to claim 1, characterized in that: The size of the gaps at both ends of the lower main bearing is 2×0.8 mm, and the diameter of the straight oil passage of the main bearing cap is The diameter of the main bearing cap transverse oil passage is

Images