An integrated built-in oil high-efficiency cooling device

Abstract

The present invention relates to internal combustion engine technology, specifically an integrated built-in oil efficient cooling device, including an engine body, an oil cooler cover and an oil cooler inner core, wherein the front end face of the engine body is provided with a first inner cavity, the oil cooler inner core is installed in the first inner cavity, and the oil cooler inner core is tilted downward from left to right along the length direction; the rear end face of the oil cooler cover is provided with a second inner cavity, the second inner cavity surrounds the coolant flow outlet, the coolant flow inlet and the outside of the oil cooler inner core, and the second inner cavity is provided with a first guide plate and a second guide plate; the oil cooler cover is also integrated with an oil supply module, an oil filter seat module and a bypass module. The design of the guide plate of the present invention allows as much water as possible to pass evenly between the long sides of the core plates of the inner core of the oil cooler at a large angle, increases the cooling water flow rate between the core plates, and realizes more efficient cooling of the oil cooler. The oil channels of the present invention are all built-in, with high integration and compact structure.

Description

Technical Field

[0001] The invention relates to internal combustion engine technology, in particular to an integrated built-in high-efficiency engine oil cooling device. Background Art

[0002] Engine oil has the functions of lubricating, cooling and cleaning moving parts. To achieve the above functions, the engine oil cooling module and oil filter module are required to cool and filter the oil respectively to ensure that the oil is at a suitable operating temperature and cleanliness.

[0003] Engine oil coolers are generally divided into built-in and external types. Built-in oil coolers generally include an oil cooler core and an oil cooler cover. They transfer the heat of the oil flowing through the oil cooler to the engine cooling water, thereby reducing the temperature of the oil from the oil pan to a suitable temperature. The oil filter module generally includes an oil filter and a filter seat, which filters impurities in the oil from the engine body oil pan.

[0004] In the prior art, due to structural limitations, the built-in oil cooler is often arranged separately from the oil filter module, and the integration is low; some built-in oil coolers that adopt an integrated structure are often directly fixed on the cover plate that serves as the oil cooler seat, lacking control measures for the cooling water flow path. After being installed in the body, the inner core of the oil cooler is generally immersed in the cooling water of the body along the water flow direction or horizontally. The cooling water flow area between the layers of the core plates of the inner core of the oil cooler is small, and the cooling water flow is subject to greater resistance, resulting in low heat exchange efficiency of the oil cooler and greater power loss of the water pump. In addition, the prior art mostly adopts an oil flow path that first cools and then filters, which easily leads to the problem of high flow resistance of the oil filter. Summary of the invention

[0005] In view of the problems pointed out in the background technology, the purpose of the present invention is to provide an integrated built-in high-efficiency oil cooling device, aiming to achieve efficient cooling of the oil and realize the integration of the oil cooler module and the oil filter module.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An integrated built-in oil high-efficiency cooling device comprises an engine body, an oil cooler cover and an oil cooler inner core, wherein the front end surface of the engine body is provided with a first inner cavity, the upper left end of the first inner cavity is provided with a coolant flow outlet and an oil flow outlet, the right end is provided with a coolant flow inlet and a first inlet, the outside of the first inner cavity is provided with a second inlet, a third inlet and a bypass inlet, the second inlet is connected to the first inlet, the third inlet and the bypass inlet are respectively connected to the main oil channel of the engine body; the coolant outlet and the coolant flow inlet are respectively connected to the coolant channel in the engine body, and the second inlet is connected to the third inlet through the oil cooler cover;

[0008] The oil cooler inner core is installed in the first inner cavity, and the oil cooler inner core is arranged between the coolant flow outlet and the coolant flow inlet in a downwardly inclined manner from left to right along the length direction; the oil enters the oil cooler inner core from the first inlet, and after being cooled by the oil cooler inner core, returns to the main oil passage of the engine body from the oil flow outlet;

[0009] The rear end face of the oil cooler cover is connected to the engine body, and the rear end face of the oil cooler cover is provided with a second inner cavity, which surrounds the coolant flow outlet, the coolant flow inlet and the outside of the oil cooler inner core, and the second inner cavity is provided with a first guide plate and a second guide plate; the second inner cavity has a second side wall and a fifth side wall which are arranged downwardly inclined from left to right, the second side wall is located below the fifth side wall, and there is a gap between the second side wall, the fifth side wall and the side edges corresponding to the oil cooler inner core; after the coolant enters the second inner cavity from the coolant flow outlet, it is guided to the second side wall by the second guide plate, and when it flows to the lower right along the second side wall, it is guided to the oil cooler inner core by the first guide plate, passes through the oil cooler inner core and the fifth side wall, passes over the first guide plate, and returns to the coolant channel of the engine body from the coolant flow inlet;

[0010] The oil cooler cover also integrates an oil supply module, an oil filter seat module and a bypass module. The oil supply module has an oil supply passage inside, an oil filter oil circuit inside the oil filter seat module, and a bypass oil passage inside the bypass module. The input end of the oil supply passage of the oil supply module is connected to the third inlet, and the output end is connected to the oil filter oil circuit inlet of the oil filter seat module. The oil filter oil circuit outlet is respectively connected to the second inlet and the bypass oil passage of the bypass module, and the bypass oil passage is connected to the bypass inlet through the bypass oil port opened at the rear end. When the pressure of the second inlet is within a preset pressure value range, the oil from the main oil passage of the engine body passes through the oil supply module and the oil filter seat module in turn, and enters the second inlet after being filtered by the oil filter seat module. When the pressure of the second inlet exceeds the preset value, the bypass oil passage is opened, and a part of the oil filtered by the oil filter seat module is directly returned to the main oil passage of the engine body through the bypass inlet via the bypass oil port.

[0011] The inner wall of the second inner cavity includes a first side wall, a second side wall, a third side wall, a fourth side wall, a fifth side wall and a sixth side wall which are connected counterclockwise from left to right. The first side wall and the fourth side wall are both vertical planes, the second side wall and the fifth side wall are both inclined downward from left to right and parallel to each other, the third side wall and the sixth side wall are both parallel to the horizontal plane, and the areas of the second side wall and the fifth side wall are equal and the largest; the first guide plate is connected to the third side wall, the second guide plate is connected to the sixth side wall, the coolant inlet is arranged between the first guide plate and the fourth side wall, and the coolant outlet is arranged between the second guide plate and the first side wall.

[0012] The oil supply module is integrally arranged at the lower end of the oil cooler cover, and the oil supply passage inside the oil supply module has an oil inlet, the oil inlet is in the same direction as the bypass oil port, and the oil inlet is connected to the third inlet.

[0013] An oil outlet is arranged on the right side of the outside of the second inner cavity, and the oil outlet is consistent with the opening direction of the bypass oil port. The oil outlet serves as the oil filter oil circuit outlet, and its outer end is connected to the second inlet, and its interior is respectively connected to the oil filter circuit of the oil filter seat module and the bypass oil channel of the bypass module.

[0014] The oil filter seat module is integrally arranged at the right end of the oil cooler cover. The oil filter passage inside the oil filter seat module includes an oil filter inlet passage and an oil filter outlet passage. The right end of the oil filter seat module is provided with a mounting platform, and the mounting platform is provided with an input oil cavity. The input oil cavity is connected to the oil filter inlet passage through a connecting hole. A central oil outlet pipe is provided in the input oil cavity. One end of the central oil outlet pipe is connected to the oil filter outlet passage, and the other end is connected to the oil filter outlet chamber. The oil filter is connected to the mounting platform, and the oil filter inlet chamber is connected to the input oil cavity; the oil filter inlet passage is connected to the oil supply passage, and the oil filter outlet passage is connected to the oil filter oil passage outlet.

[0015] The oil filter inlet passage is arranged vertically, and the number of the mounting platforms is N, where N≥2; the N mounting platforms are distributed from top to bottom at the right end of the oil filter seat module, and the oil filter connected to each mounting platform is in a horizontal state.

[0016] The oil outlet passage of the oil filter is arranged vertically, and an opening is arranged at the upper end thereof, and a plugging head connected by a thread is arranged in the opening.

[0017] The bypass module is integrally arranged between the oil filter seat module and the second inner cavity; the bypass oil channel inside the bypass module includes a coaxially arranged oil hole and a valve body cavity, the lower end of the oil hole is connected to the oil filter outlet, the upper end of the oil hole is connected to the valve body cavity, and the inner diameter of the valve body cavity is larger than the inner diameter of the oil hole; a bypass valve assembly is provided in the valve body cavity, and the bypass oil port is arranged on a side wall of the valve body cavity, and the opening and closing of the bypass oil port is controlled by the bypass valve assembly.

[0018] The external opening end surface of the first inner cavity is the first bonding surface, the first bonding surface is a smooth plane, and the second inlet, the third inlet and the bypass inlet are all arranged on the first bonding surface; the opening end surface of the second inner cavity is the second bonding surface, the second bonding surface is also a smooth plane, and the second bonding surface is sealed and connected to the first bonding surface.

[0019] A drain hole is arranged on the third side wall of the second inner cavity, and a drain valve is connected to the outer opening of the drain hole.

[0020] Beneficial effects of the present invention: The present invention arranges the inner core of the oil cooler obliquely along the second inner cavity, the second inner cavity side plate is designed to fit the inner core of the oil cooler, and the guide plate inside the second inner cavity is designed, so that as much water as possible passes through the long sides of the core plates of the inner core of the oil cooler at a large angle evenly, thereby increasing the cooling water flow rate between the core plates, improving the convective heat transfer coefficient between the cooling water and the core plate surface, and achieving more efficient cooling of the oil cooler; the obliquely arranged inner core of the oil cooler increases the water flow area, reduces the water flow resistance, reduces the power loss of the water pump, and thus improves the thermal efficiency of the engine, achieving energy-saving effects;

[0021] The oil cooler cover of the present invention adopts an integrated casting design and integrates an oil filter seat module, with high integration and compact structure. The oil channels are all built-in, and no external cooling water and oil pipelines are required, which reduces the number of parts, improves installation efficiency, and effectively reduces the overall cost. This structure realizes the central placement of the oil filter and the horizontal and transverse arrangement, effectively avoiding the possible interference between the low-position or vertical oil filter and the vehicle frame, so that the engine can be adapted to large tractors. The compact design improves the adaptability of the engine and avoids the problems of complex pipelines and large oil circuit resistance caused by the need for an external oil filter.

[0022] The oil circuit design inside the oil cooler cover assembly of the present invention allows the hot oil from the oil pump to be filtered through the oil filter first and then cooled through the oil cooler, which helps to reduce the resistance of the oil flowing through the oil filter, increase the oil flow rate and the oil pressure of the main oil channel, and reduce the power loss of the oil pump. In addition, the filtered oil enters the oil cooler for cooling, which can effectively reduce the risk of blockage of the oil cooler core.

[0023] The oil cooler cover of the present invention integrates the bypass valve function, has a compact layout, and is easy to install. It also avoids machining redundant bypass valve channels on the engine body, thereby reducing the weight of the engine body and the processing cost. The drain valve integrated on the oil cooler cover assembly is located at the lowest point of the engine body cooling system, which can effectively drain the cooling water in the engine body and prevent the engine body and other parts in contact with the cooling water from freezing and cracking at low temperatures.

[0024] In addition, the bypass valve seat integrated on the oil cooler cover assembly of the present invention can be used as an oil supply connector to supply oil to engine accessories (such as a supercharger). The connector oil circuit is directly connected to the main oil channel, which can quickly establish oil pressure and extend the service life of the accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of the oil cooler cover of the present invention;

[0026] Figure 2 It is a right rear oblique view of the oil cooler cover of the present invention;

[0027] Figure 3 It is a partial oblique view of the right front side of the oil cooler cover of the present invention;

[0028] Figure 4 A bottom view of the oil cooler cover of the present invention;

[0029] Figure 5 The oil supply passage of the oil supply module and the oil filter inlet passage of the oil filter seat module in the present invention are sectional views ( Figure 4 CC section view);

[0030] Figure 6 The cross-sectional view of the installation platform and the oil outlet passage of the oil filter seat module of the present invention ( Figure 4 BB cross-sectional view);

[0031] Figure 7 sectional view of the bypass oil passage and the oil filter outlet passage of the present invention ( Figure 1 AA section view);

[0032] Figure 8 It is a schematic diagram of assembling the oil cooler cover, oil filter, oil cooler inner core and engine body of the present invention;

[0033] Fig. 9 It is a front cross-sectional view of the oil cooler cover and the oil cooler inner core of the present invention being installed in cooperation with each other on the engine body and a schematic diagram of the coolant flow distribution;

[0034] Fig.10 It is a cross-sectional view of the oil cooler cover and the oil cooler inner core of the present invention in the long side direction.

[0035] In the figure:

[0036] 11. Oil cooler cover, 22. Oil cooler core, 33. Engine body;

[0037] 2. Bypass valve assembly, 3. Sealing head, 4. Oil filter connector, 5. Drain valve, 6. Oil filter;

[0038] 12. Oil supply module, 120. Oil supply channel;

[0039] 13. bypass module, 130. bypass oil passage, 131. oil through hole, 132. valve body cavity;

[0040] 14. Oil filter seat module; 141. Oil filter inlet passage; 142. Oil input chamber; 143. Connecting hole; 144. Central oil outlet pipe; 145. Oil filter outlet passage; 146. Mounting platform;

[0041] 15. Oil inlet, 16. Bypass oil port, 17. Oil outlet, 18. Sealing groove, 19. Bolt hole column, 110. Drain hole; 171. Oil outlet closed end.

[0042] 111, second inner cavity, 112, second side wall; 113, second guide plate, 114, first guide plate, 115, fifth side wall, 117, avoidance pit, 118, reinforcing rib;

[0043] 201, bypass valve seat, 202, spring, 203, plunger; 221, protrusion;

[0044] 331, first inner cavity, 332, second inlet, 333, bypass inlet, 334, oil outlet, 335, first inlet. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] like Figure 1-10 As shown, the present invention provides an integrated built-in oil high-efficiency cooling device, comprising an engine body 33, an oil cooler cover 11 and an oil cooler inner core 22, wherein the front end surface of the engine body 33 is provided with a first inner cavity 331, the upper left end of the first inner cavity 331 is provided with a coolant flow outlet (not shown) and an oil flow outlet 334, the right end is provided with a coolant flow inlet (not shown) and a first inlet 335, the outside of the first inner cavity 331 is provided with a second inlet 332, a third inlet (not shown) and a bypass inlet 333, the second inlet 332 is connected to the first inlet 335, the third inlet and the bypass inlet 333 are respectively connected to the main oil channel of the engine body 33; the coolant outlet and the coolant flow inlet are respectively connected to the coolant channel in the engine body 33, and the second inlet 332 is connected to the third inlet through the oil cooler cover 11;

[0047] The oil cooler inner core 22 is installed in the first inner cavity 331, and the oil cooler inner core 22 is arranged between the coolant flow outlet and the coolant flow inlet in a downwardly inclined manner from left to right along the length direction; the oil enters the oil cooler inner core 22 from the first inlet 335, and after being cooled by the oil cooler inner core 22, returns to the main oil passage of the engine body 33 from the oil flow outlet 334;

[0048] The rear end face of the oil cooler cover 11 is connected to the engine body 33, and a second inner cavity 111 is provided on the rear end face of the oil cooler cover 11. The second inner cavity 111 surrounds the coolant outlet, the coolant inlet and the outside of the oil cooler inner core 22, and a first guide plate 114 and a second guide plate 113 are provided in the second inner cavity 111; the second inner cavity 111 has a second side wall 112 and a fifth side wall 115 which are arranged downwardly inclined from left to right, and the second side wall 112 is located below the fifth side wall 115. There are gaps between the second side wall 112, the fifth side wall 115 and the side edges corresponding to the oil cooler inner core 22; after the coolant enters the second inner cavity 111 from the coolant outlet, it is guided to the second side wall 112 by the second guide plate 113, and when it flows to the lower right along the second side wall 112, it is guided to the oil cooler inner core 22 by the first guide plate 114, passes through the oil cooler inner core 22 and the fifth side wall 115, passes over the first guide plate 114, and returns to the coolant channel of the engine body 33 from the coolant outlet;

[0049] The oil cooler cover 11 also integrates an oil supply module 12, an oil filter seat module 14 and a bypass module 13. The oil supply module 12 has an oil supply passage 120 inside, the oil filter seat module 14 has an oil filter oil path inside, and the bypass module 13 has a bypass oil passage 130 inside; the input end of the oil supply passage 120 of the oil supply module 12 is connected to the third inlet, the output end is connected to the oil filter oil path inlet of the oil filter seat module 14, and the oil filter oil path outlet is respectively connected to the second inlet 332 and the bypass oil passage 130 of the bypass module 13, and the bypass oil passage 130 passes through the rear end The open bypass oil port 16 is connected to the bypass inlet 333; when the pressure of the second inlet 332 is within the preset pressure value range, the oil from the main oil channel of the engine body 33 passes through the oil supply module 12 and the oil filter seat module 14 in turn, and enters the second inlet 332 after being filtered by the oil filter seat module 14; when the pressure of the second inlet 332 exceeds the preset value, the bypass oil channel 130 is opened, and a part of the oil filtered by the oil filter seat module 14 returns to the main oil channel of the engine body 33 directly through the bypass inlet 333 via the bypass oil port 16.

[0050] In the above technical solution, the coolant outlet, coolant inlet and third inlet are not illustrated, but according to the text description of this specification, it is sufficient for technical personnel in this field to obtain a definite technical solution, so no special illustration is given.

[0051] The inner wall of the second inner cavity 111 includes a first side wall, a second side wall 112, a third side wall, a fourth side wall, a fifth side wall 115 and a sixth side wall which are connected counterclockwise from left to right. The first side wall and the fourth side wall are both vertical planes, the second side wall 112 and the fifth side wall 115 are both inclined downward from left to right and parallel to each other, the third side wall and the sixth side wall are both parallel to the horizontal plane, and the areas of the second side wall 112 and the fifth side wall 115 are equal and the largest; the first guide plate 114 is connected to the third side wall, the second guide plate 113 is connected to the sixth side wall, the coolant inlet is arranged between the first guide plate 114 and the fourth side wall, and the coolant outlet is arranged between the second guide plate 113 and the first side wall.

[0052] In one embodiment of the present invention, the oil cooler cover 11 is as follows Figure 1 , Figure 2 As shown, it is an integrated cast thin-walled structure. The second inner cavity 111 is located at the upper left side of the oil cooler cover 11, and is surrounded by a top plate and six enclosure plates. The six enclosure plates are connected end to end to form an elongated hexagon. One end of the hexagon is connected to the top plate to form a second inner cavity 111 with a closed front end and an open rear end, which is used to accommodate the oil cooler inner core 22. The second side wall 112 and the fifth side wall 115 of the hexagonal second inner cavity 111 are long sides, which are arranged obliquely downward from left to right, and the long sides of the oil cooler inner core 22 accommodated therein are arranged in the same direction. The rear end faces of the six enclosure plates are processed into coplanar smooth planes, which are used to fit and seal with the mounting surface of the engine body 33. As shown Figure 2 , Fig. 9 , Fig.10 As shown, the top plate of the second inner cavity 111 also includes two avoidance pits 117. The rear end faces of the second guide plate 113 and the first guide plate 114 are coplanar with the rear end faces of the six enclosures, and the front ends are connected to the top plate. The upper end of the second guide plate 113 is connected to the enclosure corresponding to the sixth side wall, and the other end extends and is close to the short side of the upper oblique side of the oil cooler inner core 22; the lower end of the first guide plate 114 is connected to the enclosure corresponding to the third side wall, and the other end extends and is close to the short side of the lower oblique side of the oil cooler inner core 22; the second guide plate 113 and the first guide plate 114 are both curved surfaces at one end close to the oil cooler inner core 22, and the curved surface is adapted to the curved surface of the oil cooler inner core 22, with an adaptation gap of 1.5 to 3 mm. In order to further ensure the precise distance from the oil cooler inner core 22, the curved surface is a machined surface. Two avoidance pits 117 are arranged on the upper and lower sides of the top plate of the second inner cavity 111. The positions of the two avoidance pits 117 correspond to the two protrusions 221 exposed on the outermost core plate of the oil cooler inner core 22, so that the inner surface of the top plate maintains a distance of 2 to 4 mm from the outermost core plate of the oil cooler inner core 22. Fig. 9The dotted arrow indicates the flow direction of the coolant in the second inner cavity 111. The spacing between the top plate and the oil cooler core 22 is combined with the guiding effect of the second guide plate 113 and the first guide plate 114, so that most of the coolant flows from the long side of the oil cooler core 22 to the long side of the other side, increasing the cooling water flow rate on the surface of the core plate of the oil cooler core 22, improving the convection heat transfer coefficient, and making the heat exchange of the oil cooler core 22 more efficient, effectively avoiding overheating of the oil. At the same time, because the coolant flows from one long side to the other long side, the circulation area increases, the water flow rate increases, which is conducive to reducing the engine coolant temperature, while reducing the power loss of the water pump, which is conducive to improving the thermal efficiency of the engine and achieving energy saving effects.

[0053] The oil supply module 12 is integrally arranged at the lower end of the oil cooler cover 11. The oil supply passage 120 inside the oil supply module 12 has an oil inlet 15. The oil inlet 15 and the bypass oil port 16 have the same opening direction. The oil inlet 15 is connected to the third inlet.

[0054] An oil outlet 17 is disposed on the right side of the exterior of the second inner cavity 111. The oil outlet 17 is in the same opening direction as the bypass oil port 16. The oil outlet 17 serves as the oil filter oil outlet. Its outer end is connected to the second inlet 332, and its interior is connected to the oil filter oil path of the oil filter seat module 14 and the bypass oil path 130 of the bypass module 13. In one embodiment of the present invention, the oil inlet 15, the bypass oil port 16, and the oil outlet 17 are all opened at the rear end face of the oil cooler cover 11. A circle of sealing grooves 18 are arranged at the openings of the oil inlet 15, the bypass oil port 16, and the oil outlet 17, and a sealing ring is provided in each sealing groove 18. Figure 1 In the figure, the oil outlet closed end 171 is marked, and its purpose is to correspond to and show the position of the oil port 17.

[0055] like Figure 1 to Figure 6As shown, the oil filter seat module 14 is integrally arranged at the right end of the oil cooler cover 11, and the oil filter passage inside the oil filter seat module 14 includes an oil filter inlet passage 141 and an oil filter outlet passage 145. The right end of the oil filter seat module 14 is provided with a mounting platform 146, and the mounting platform 146 is provided with an input oil chamber 142. The input oil chamber 142 is connected to the oil filter inlet passage 141 through a connecting hole 143, and a central oil outlet pipe 144 is provided in the input oil chamber 142. One end of the central oil outlet pipe 144 is connected to the oil filter outlet passage 145, and the other end is connected to the oil outlet chamber of the oil filter 6. The oil filter 6 is connected to the mounting platform 146, and the oil inlet chamber of the oil filter 6 is connected to the input oil chamber 142; the oil filter inlet passage 141 is connected to the oil supply passage 120, and the oil filter outlet passage 145 is connected to the oil filter oil passage outlet. The input oil chamber 142 is a semi-enclosed cylindrical chamber, with its opening facing the right side and processed into a smooth plane, which is used to fit and seal with the oil filter 6. The input oil chamber 142 intersects with the oil filter inlet passage 141 to form a connecting hole 143. A central oil outlet pipe 144 is arranged at the center of the input oil chamber 142, which is connected to the oil filter outlet passage 145 arranged vertically in the same plane. The oil filter oil outlet, i.e., the oil outlet 17, is located at the lower end of the oil filter outlet passage 145 and is perpendicular to the oil filter outlet passage 145. One end of the oil filter is connected to the oil filter outlet passage 145, and the other end is directly opened at the rear end face of the oil cooler cover 11. The oil outlet 17 is also connected to the bypass oil passage 130.

[0056] The oil filter inlet passage 141 is arranged vertically, and the number of the mounting platforms 146 is N, where N≥2; the N mounting platforms 146 are distributed from top to bottom at the right end of the oil filter seat module 14, and the oil filter 6 connected to each mounting platform 146 is in a horizontal state. Figure 1 , Figure 2 , Figure 6 The figures all show a hollow oil filter connector 4 , a central oil outlet pipe 144 is provided with an internal thread, the oil filter connector 4 is threadedly connected to the central oil outlet pipe 144 , and the oil filter connector 4 is used to install the oil filter 6 .

[0057] The oil filter outlet passage 145 is vertically arranged, and has an opening at its upper end, in which a threaded plugging head 3 is arranged. Similarly, the ends of the oil supply passage 120 and the oil filter inlet passage 141 are both provided with internal threaded openings for installing the plugging head 3 for plugging.

[0058] like Figure 5 and Figure 7As shown, the bypass module 13 is integrally arranged between the oil filter seat module 14 and the second inner cavity 111; the bypass oil passage 130 inside the bypass module 13 includes a coaxially arranged oil hole 131 and a valve body cavity 132, the lower end of the oil hole 131 is connected to the oil filter oil outlet, the upper end of the oil hole 131 is connected to the valve body cavity 132, and the inner diameter of the valve body cavity 132 is larger than the inner diameter of the oil hole 131; a bypass valve assembly 2 is provided in the valve body cavity 132, and the bypass oil port 16 is provided on a side wall of the valve body cavity 132, and the bypass valve assembly 2 controls the opening and closing of the bypass oil port 16. In one embodiment of the present invention, the oil hole 131 and the valve body cavity 132 are both inclined, and the intersection of the oil hole 131 and the valve body cavity 132 adopts a conical transition; the bypass valve assembly 2 is composed of a bypass valve seat 201, a spring 202, and a plunger 203. The lower end of the plunger 203 is a truncated cone structure. In the valve body cavity 132, the conical surface of the lower end of the plunger 203 is pressed against the conical surface at the intersection of the oil hole 131 and the valve body cavity 132, so as to isolate the two sections of the oil passage of the oil hole 131 and the valve body cavity 132. The lower end of the spring 202 is pressed against the back shoulder of the frustoconical structure at the lower end of the plunger 203. The bypass valve seat 201 is installed at the end of the valve body cavity 132 through threads, and the spring 202 is pre-tightened. The bypass valve seat 201 is a hollow structure, the lower end of which is connected to the valve body cavity 132, and the upper end is open and made into an external threaded joint for supplying oil to the outside. Since the valve body cavity 132 is directly connected to the main oil channel of the engine body 33 through the bypass oil port 16, the joint can quickly provide sufficient engine oil to the accessories.

[0059] The external opening end surface of the first inner cavity 331 is the first bonding surface, the first bonding surface is a smooth plane, and the second inlet 332, the third inlet and the bypass inlet 333 are all arranged on the first bonding surface; the opening end surface of the second inner cavity 111 is the second bonding surface, the second bonding surface is also a smooth plane, and the second bonding surface is sealed and connected to the first bonding surface.

[0060] A drain hole 110 is provided on the third side wall of the second inner cavity 111, and the outer opening of the drain hole 110 is connected to a drain valve 5. This is located at the bottom of the cooling water jacket of the entire engine body 33, and can effectively drain the coolant inside the engine when necessary to prevent the engine parts from being frozen and cracked.

[0061] More specifically, Figure 1 , Figure 2As shown, bolt holes 19 are arranged around the second inner cavity 111 and near the oil inlet 15, bypass oil port 16, and oil outlet 17, respectively, for mounting the oil cooler cover 11 on the engine body 33 and strengthening the sealing of the cooling water cavity and the oil hole. A reinforcing rib 118 is arranged on the front end surface of the oil cooler cover 11. The reinforcing rib 118 is arranged horizontally and connects the second inner cavity 111, the bypass module 13, and the oil filter seat module 14, thereby strengthening and reducing the vibration of the oil cooler cover 11.

[0062] Application method of the present invention:

[0063] like Figure 8 As shown, during installation, the oil filter 6 is installed to the right side of the oil cooler cover 11 through the oil filter connector 4, and the oil cooler core 22 is installed in the first inner cavity 331 of the engine body 33 in the same tilt direction as the second inner cavity 111, and then the oil cooler cover 11 is installed on the engine body 33 by bolts, and the oil inlet 15, bypass oil port 16, and oil outlet 17 are sealed by sealing rings respectively, and the second inner cavity 111 is sealed by applying glue at the open end. After installation, the second inner cavity 111 is connected with the first inner cavity 331, enclosing the oil cooler core 22, and realizing the accurate matching of the second guide plate 113, the first guide plate 114, the top plate, the avoidance pit 117 on the top plate and the contour of the oil cooler core 22. The bypass oil port 16 is connected with the bypass inlet 333, and then connected to the main oil channel of the engine body 33, and the oil outlet 17 is connected with the second inlet 332.

[0064] Normally, if Figure 5 , 6 As shown by the solid arrows in 7, when the engine is running, the oil from the oil pump enters the engine body 33 and is delivered to the oil inlet 15, and then flows into the oil supply passage 120, the oil filter oil inlet passage 141, the connecting hole 143, the input oil chamber 142, and the oil filter 6 in sequence. The oil filtered by the oil filter 6 flows into the central oil outlet pipe 144, the oil filter oil outlet passage 145, and the oil outlet 17 in sequence through the hollow oil filter connector 4, flows into the second inlet 332 through the oil outlet 17, and then enters the oil cooler core 22 for cooling.

[0065] The opening pressure of the bypass valve assembly 2 can be set by adjusting the pre-compression length of the spring 202. The required opening pressure is determined based on the flow resistance of the oil cooler core 22 corresponding to the oil flow and oil temperature under the engine's calibrated operating conditions. The flow resistance can be obtained through experiments or fluid simulation. For example, if the flow resistance under the measured calibrated operating conditions is 105 kPa, the opening pressure of the bypass valve assembly 2 can be set to 200 kPa based on the margin coefficient.

[0066] When the oil is too cold or the oil cooler core 22 is blocked, causing the flow resistance of the oil cooler core 22 to exceed 200 kPa, Figure 5 , 7 As shown by the dotted arrow, the pressure difference between the oil at the oil outlet 17 and the second inlet 332 in front of the oil cooler inner core 22 and the oil in the main oil channel will exceed the opening pressure of the bypass valve assembly 2, and the plunger 203 will be pushed open. The above-mentioned part of the oil from the oil filter outlet channel 145 will no longer enter the oil outlet 17, but enter the oil hole 131 and the valve body cavity 132, and then enter the bypass inlet 333 on the engine body 33 through the bypass oil port 16, and then enter the main oil channel of the engine body 33. On the one hand, it ensures that the engine always has sufficient oil supply, and on the other hand, it prevents the oil cooler inner core 22 and upstream components from being damaged due to excessive pressure.

[0067] In this specification, unless explicitly stated otherwise, the term "comprising" should be understood as including the stated elements without excluding other elements; the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a direct connection or an indirect connection through an intermediate medium.

[0068] It should be noted that the above embodiments and embodiment drawings are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

[0069] Parts of the present invention not described in detail are prior art.

Claims

1. An integrated built-in high-efficiency oil cooling device, comprising an engine body (33), an oil cooler cover (11) and an oil cooler inner core (22), characterized in that: The front end surface of the engine body (33) is provided with a first inner cavity (331); a coolant outlet and an oil outlet (334) are provided at the upper left end of the first inner cavity (331); a coolant inlet and a first inlet (335) are provided at the right end; a second inlet (332), a third inlet and a bypass inlet (333) are provided outside the first inner cavity (331); the second inlet (332) is connected to the first inlet (335); the third inlet and the bypass inlet (333) are respectively connected to the main oil channel of the engine body (33); the coolant outlet and the coolant inlet are respectively connected to the coolant channel in the engine body (33); the second inlet (332) is connected to the third inlet via an oil cooler cover (11); The oil cooler inner core (22) is installed in the first inner cavity (331), and the oil cooler inner core (22) is arranged between the coolant flow outlet and the coolant flow inlet in a downwardly inclined manner from left to right along the length direction; the oil enters the oil cooler inner core (22) from the first inlet (335), and after being cooled by the oil cooler inner core (22), returns to the main oil passage of the engine body (33) from the oil flow outlet (334); The rear end face of the oil cooler cover (11) is connected to the engine body (33); the rear end face of the oil cooler cover (11) is provided with a second inner cavity (111); the second inner cavity (111) surrounds the coolant flow outlet, the coolant flow inlet and the outside of the oil cooler inner core (22); and the second inner cavity (111) is provided with a first guide plate (114) and a second guide plate (113); the second inner cavity (111) has a second side wall (112) and a fifth side wall (115) which are arranged downwardly inclined from left to right; the second side wall (112) is located below the fifth side wall (115). , there are gaps between the second side wall (112), the fifth side wall (115) and the side edges corresponding to the oil cooler inner core (22); after the coolant enters the second inner cavity (111) from the coolant outflow port, it is guided to the second side wall (112) by the second guide plate (113), and when it flows to the lower right along the second side wall (112), it is guided to the oil cooler inner core (22) by the first guide plate (114), passes through the oil cooler inner core (22) and the fifth side wall (115), passes over the first guide plate (114), and returns to the coolant channel of the engine body (33) from the coolant inflow port; The oil cooler cover (11) further integrates an oil supply module (12), an oil filter seat module (14) and a bypass module (13); the oil supply module (12) has an oil supply passage (120) inside, the oil filter seat module (14) has an oil filter oil path inside, and the bypass module (13) has a bypass oil passage (130) inside; the input end of the oil supply passage (120) of the oil supply module (12) is connected to the third inlet, the output end is connected to the oil filter oil path inlet of the oil filter seat module (14), and the oil filter oil path outlet is respectively connected to the second inlet (332) and the bypass oil passage (130) of the bypass module (13), and the bypass oil passage (130) is connected to the bypass module (13) through The bypass oil port (16) with a rear end opening is connected to the bypass inlet (333); when the pressure of the second inlet (332) is within a preset pressure value range, the oil from the main oil channel of the engine body (33) passes through the oil supply module (12) and the oil filter seat module (14) in sequence, and after being filtered by the oil filter seat module (14), enters the second inlet (332); when the pressure of the second inlet (332) exceeds the preset value, the bypass oil channel (130) is opened, and a portion of the oil after being filtered by the oil filter seat module (14) returns to the main oil channel of the engine body (33) directly through the bypass inlet (333) via the bypass oil port (16).

2. The integrated built-in oil high-efficiency cooling device according to claim 1 is characterized in that: The inner side wall of the second inner cavity (111) comprises a first side wall, a second side wall (112), a third side wall, a fourth side wall, a fifth side wall (115) and a sixth side wall which are connected in a counterclockwise manner from left to right, the first side wall and the fourth side wall are both vertical planes, the second side wall (112) and the fifth side wall (115) are both inclined downward from left to right and are parallel to each other, the third side wall and the sixth side wall are both parallel to the horizontal plane, and the areas of the second side wall (112) and the fifth side wall (115) are equal and the largest; the first guide plate (114) is connected to the third side wall, the second guide plate (113) is connected to the sixth side wall, the coolant inlet is arranged between the first guide plate (114) and the fourth side wall, and the coolant outlet is arranged between the second guide plate (113) and the first side wall.

3. The integrated built-in oil efficient cooling device according to claim 1 is characterized in that: The oil supply module (12) is integrally arranged at the lower end of the oil cooler cover (11); the oil supply passage (120) inside the oil supply module (12) has an oil inlet (15); the oil inlet (15) and the bypass oil port (16) have the same opening direction; the oil inlet (15) is connected to the third inlet.

4. The integrated built-in oil efficient cooling device according to claim 1 is characterized in that: An oil outlet (17) is provided on the right side of the exterior of the second inner cavity (111), and the oil outlet (17) and the bypass oil outlet (16) have the same opening direction. The oil outlet (17) serves as an oil filter oil circuit outlet, and its outer end is connected to the second inlet (332), and its interior is connected to the oil filter circuit of the oil filter seat module (14) and the bypass oil channel (130) of the bypass module (13), respectively.

5. The integrated built-in oil efficient cooling device according to claim 1 is characterized in that: The oil filter seat module (14) is integrally arranged at the right end of the oil cooler cover (11); the oil filter passage inside the oil filter seat module (14) includes an oil filter inlet passage (141) and an oil filter outlet passage (145); the right end of the oil filter seat module (14) is provided with a mounting platform (146); the mounting platform (146) has an input oil chamber (142); the input oil chamber (142) is connected to the oil filter inlet passage (141) through a connecting hole (143); A central oil outlet pipe (144) is provided in the oil inlet chamber (142). One end of the central oil outlet pipe (144) is connected to the oil filter outlet passage (145), and the other end is connected to the oil outlet chamber of the oil filter (6). The oil filter (6) is connected to the mounting platform (146). The oil inlet chamber of the oil filter (6) is connected to the input oil chamber (142). The oil filter inlet passage (141) is connected to the oil supply passage (120), and the oil filter outlet passage (145) is connected to the oil filter oil passage outlet.

6. The integrated built-in oil high-efficiency cooling device according to claim 5 is characterized in that: The oil filter inlet passage (141) is arranged vertically, and the number of the mounting platforms (146) is N, where N≥2; the N mounting platforms (146) are distributed from top to bottom at the right end of the oil filter seat module (14), and the oil filter (6) connected to each mounting platform (146) is in a horizontal state.

7. The integrated built-in oil high-efficiency cooling device according to claim 5 is characterized in that: The oil filter outlet passage (145) is arranged vertically, and an opening is provided at its upper end, and a threaded plug (3) is provided in the opening.

8. The integrated built-in oil efficient cooling device according to claim 1 is characterized by: The bypass module (13) is integrally arranged between the oil filter seat module (14) and the second inner cavity (111); the bypass oil passage (130) inside the bypass module (13) comprises a coaxially arranged oil passage hole (131) and a valve body cavity (132); the lower end of the oil passage hole (131) is connected to the oil passage outlet of the oil filter, and the upper end of the oil passage hole (131) is connected to the valve body cavity (132); the inner diameter of the valve body cavity (132) is larger than the inner diameter of the oil passage hole (131); a bypass valve assembly (2) is arranged in the valve body cavity (132); the bypass oil port (16) is arranged on a side wall of the valve body cavity (132), and the bypass oil port (16) is controlled to open and close by the bypass valve assembly (2).

9. The integrated built-in oil high-efficiency cooling device according to claim 1 is characterized in that: The external opening end surface of the first inner cavity (331) is a first bonding surface, the first bonding surface is a smooth plane, and the second inlet (332), the third inlet and the bypass inlet (333) are all arranged on the first bonding surface; the opening end surface of the second inner cavity (111) is a second bonding surface, the second bonding surface is also a smooth plane, and the second bonding surface is sealed and connected to the first bonding surface.

10. The integrated built-in oil efficient cooling device according to claim 2 is characterized in that: A drain hole (110) is provided on the third side wall of the second inner cavity (111), and an external opening of the drain hole (110) is connected to a drain valve (5).

Images