Engine crankcase oil stabilizing bulkhead structure
By installing baffles and flow-guiding baffles in the engine crankcase, the problems of oil sloshing and impurities are solved, improving the stability of the lubrication system and the service life of the engine.
Patent Information
- Application Number
- CN202521824096.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-26
AI Technical Summary
Engine oil sloshing under inertial force leads to unstable lubrication, which may cause insufficient oil supply from the oil pump and the formation of oil foam, affecting engine life.
Design an engine crankcase oil stabilizing baffle structure to limit oil sloshing through a first baffle body and a second baffle body, and use a flow guide baffle to separate impurities, reducing foam formation and impurities entering the oil pump.
Improve the stability of engine oil in the crankcase, ensure sufficient oil pump suction, reduce impurities entering the lubrication system, and extend engine life.
Smart Images
Figure CN224679574U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine crankcases, specifically to an engine crankcase oil stabilizing baffle structure. Background Technology
[0002] The engine is the core power source of a vehicle, often referred to as its "heart." It provides the necessary power for the vehicle to move and plays a crucial role in the vehicle's operation.
[0003] During driving under different road conditions, the engine oil may shake significantly due to inertia. This shaking can cause air to be drawn into the oil, forming foam and affecting lubrication. If the oil shakes significantly, it may result in insufficient oil intake at the oil pump, affecting the stability of the oil pump's supply. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide an engine crankcase oil stabilizing baffle structure, which can effectively prevent the oil from sloshing in the crankcase, improve the stability of the oil in the crankcase, and reduce the formation of oil foam.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] An engine crankcase oil stabilizing baffle structure includes a crankcase, a first baffle body, and a second baffle body. The crankcase has a cavity, and both the first and second baffle bodies are formed within the cavity. An inlet and outlet for oil is formed between the first and second baffle bodies. A first rib is provided at one end of the first baffle body near the second baffle body, and the end of the first rib is formed on the crankcase. A second rib is provided at one end of the second baffle body near the first baffle body, and the end of the second rib is formed on the crankcase.
[0007] The first partition body includes a first left partition and a first right partition; the first right partition is located to the right of the first left partition; the second partition body includes a second left partition and a second right partition; the second right partition is located to the right of the second left partition.
[0008] The crankcase includes a mating left housing and a right housing, with the first left partition and the second left partition integrally formed on the left housing, and the first right partition and the second right partition integrally formed on the right housing.
[0009] The crankcase is provided with an oil pump suction chamber; a flow guide partition is provided inside the crankcase; the flow guide partition divides the area between the first partition body and the crankcase into an inner oil cavity and an outer oil cavity; the crankcase includes a rear wall portion; the flow guide partition is used to block impurities and includes a retaining wall and a partition; the upper end of the retaining wall is provided on the crankcase, and the partition is provided between the lower end of the retaining wall and the rear wall portion; the partition is located above the bottom wall of the outer oil cavity, and an oil inlet communicating between the inner and outer oil cavities is provided on the partition; the oil pump suction chamber penetrates the retaining wall and communicates with the inner oil cavity.
[0010] The partition includes a left partition and a right partition; the right partition is located to the right of the left partition; the enclosure includes a left barrier and a right barrier; the right barrier is located to the right of the left barrier.
[0011] The left baffle includes a left-positioned first connecting wall, a left-positioned second connecting wall, and a left-positioned third connecting wall; the left-positioned second connecting wall is disposed between the left-positioned first connecting wall and the left-positioned third connecting wall; the left partition is disposed between the left-positioned third connecting wall and the rear wall.
[0012] From the end of the left-side second connecting wall near the left-side first connecting wall to the end near the left-side third connecting wall, the left-side second connecting wall gradually bends and extends toward the rear wall.
[0013] The right-side baffle includes a right-side first connecting wall, a right-side second connecting wall, and a right-side third connecting wall; the right-side second connecting wall is disposed between the right-side first connecting wall and the right-side third connecting wall; the right partition is disposed between the right-side third connecting wall and the rear wall.
[0014] From the end of the right-side second connecting wall near the right-side first connecting wall to the end near the right-side third connecting wall, the right-side second connecting wall gradually bends and extends toward the rear wall.
[0015] An impurity sedimentation zone is formed between the partition and the bottom wall of the oil cavity.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This utility model provides an engine crankcase oil stabilizing baffle structure. By rationally arranging the crankcase, the first baffle body, and the second baffle body, the structure effectively prevents the oil from sloshing around within the crankcase, thereby reducing the formation of oil foam. By reducing oil sloshing, the stability of the oil within the crankcase is improved, ensuring that the oil pump suction port maintains a sufficient oil volume during pumping. Furthermore, the structural stability of the first and second baffle bodies is enhanced. In addition, by employing a flow-guiding baffle, impurities in the oil are separated, reducing the probability of impurities entering the oil pump suction chamber. This reduces the amount of impurities carried into the lubrication system by the oil pump, thereby reducing engine wear and extending engine life. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the engine crankcase oil stabilizing baffle structure of this utility model.
[0019] Figure 2 This is a cross-sectional schematic diagram of the engine crankcase oil stabilizing baffle structure of this utility model.
[0020] Figure 3 This is an exploded view of the engine crankcase oil stabilizing baffle structure of this utility model.
[0021] Figure 4 This is a schematic diagram of the disassembled state of the engine crankcase oil stabilizing baffle structure of this utility model from another perspective.
[0022] Figure 5 This is a schematic diagram of the right shell structure;
[0023] Among them, 10, crankcase; 11, oil pump suction chamber; 12, inner oil chamber; 13, outer oil chamber; 14, left housing; 15, right housing; 16, rear wall; 17, cavity; 20, guide partition; 21, enclosure; 22, partition; 221, left partition; 222, right partition; 23, oil inlet; 25, impurity sedimentation area; 30, left baffle; 31, left first connecting wall; 32, left... 33. Second connecting wall; 40. Third connecting wall on the left; 41. Right baffle; 42. First connecting wall on the right; 43. Second connecting wall on the right; 50. First partition; 51. First rib; 52. First left partition; 53. First right partition; 60. Second partition; 61. Second rib; 62. Second left partition; 63. Second right partition; 70. Inlet / outlet. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0025] like Figure 1-5 As shown, an engine crankcase oil stabilizing baffle structure includes a crankcase 10, a first baffle body 50, and a second baffle body 60. The crankcase 10 is provided with a cavity 17, and the first baffle body 50 and the second baffle body 60 are both formed in the cavity 17. An inlet and outlet 70 for oil to enter and exit are formed between the first baffle body 50 and the second baffle body 60. A first rib 51 is provided at one end of the first baffle body 50 near the second baffle body 60, and the end of the first rib 51 is formed on the crankcase 10. A second rib 61 is provided at one end of the second baffle body 60 near the first baffle body 50, and the end of the second rib 61 is formed on the crankcase 10.
[0026] When the engine vibrates, the first baffle 50 and the second baffle 60 can block and restrict the oil in the cavity 17, effectively preventing the oil from sloshing around in the crankcase 10 and thus reducing the formation of oil foam. By reducing oil sloshing, the stability of the oil in the crankcase 10 is improved, and the oil pump suction chamber 11 can maintain a sufficient oil volume when the oil pump is pumping. Therefore, the engine crankcase oil stabilizing baffle structure provided by this utility model, through the reasonable arrangement of the crankcase 10, the first baffle 50 and the second baffle 60, and the restriction of the first baffle 50 and the second baffle 60, effectively prevents the oil from sloshing around in the crankcase 10 and improves the stability of the oil. The high stability of the engine oil within the crankcase 10 reduces problems such as oil foaming and unstable oil pump supply caused by inertial forces and other factors. Furthermore, by providing a first rib 51 at one end of the first partition body 50 near the second partition body 60, with the end of the first rib 51 formed on the crankcase 10, and by providing a second rib 61 at one end of the second partition body 60 near the first partition body 50, with the end of the second rib 61 formed on the crankcase 10, the structural stability of the first partition body 50 and the second partition body 60 can be improved, thereby reducing damage to the first partition body 50 and the second partition body 60 caused by the impact force of the engine oil during long-term use and extending their service life.
[0027] The first partition body 50 includes a first left partition 52 and a first right partition 53; the first right partition 53 is located to the right of the first left partition 52. The second partition body 60 includes a second left partition 62 and a second right partition 63; the second right partition 63 is located to the right of the second left partition 62. The crankcase 10 includes a mating left housing 14 and a right housing 15. The first left partition 52 and the second left partition 62 are integrally formed on the left housing 14, and the first right partition 53 and the second right partition 63 are integrally formed on the right housing 15. By adopting the above structure, the manufacturing of the first partition body 50 and the second partition body 60 can be facilitated.
[0028] The extension trajectories of the first left partition 52, the first right partition 53, the second left partition 62, and the second right partition 63 are all straight lines, which further facilitates the fabrication and formation of the first partition body 50 and the second partition body 60.
[0029] The crankcase 10 is provided with an oil pump suction chamber 11; a flow guide partition 20 is provided inside the crankcase 10; the flow guide partition 20 divides the area between the first partition body 50 and the crankcase 10 into an inner oil cavity 12 and an outer oil cavity 13; the crankcase 10 includes a rear wall portion 16, the flow guide partition 20 is used to block impurities, and includes a retaining wall 21 and a partition 22; the upper end of the retaining wall 21 is provided on the crankcase 10, and the partition 22 is provided between the lower end of the retaining wall 21 and the rear wall portion 16; the partition 22 is located above the bottom wall of the outer oil cavity 13, and an oil inlet 23 is provided on the partition 22, connecting the inner oil cavity 12 and the outer oil cavity 13; the oil pump suction chamber 11 passes through the retaining wall 21 and communicates with the inner oil cavity 12. During use, engine oil enters the outer oil chamber 13 through inlet / outlet 70, and then flows from the outer oil chamber 13 into the inner oil chamber 12 through oil inlet 23. During this process, most impurities in the engine oil are trapped in the outer oil chamber 13 by the flow guide wall 20, settling at the bottom. The oil, now free of impurities, enters the inner oil chamber 12 through oil inlet 23 and flows into the oil pump suction chamber 11, allowing the oil pump to draw in cleaner oil. Therefore, based on the crankcase 10 and the guide partition 20, and by combining the guide partition 20 with the enclosure 21 and the partition 22, the guide partition 20 can separate impurities in the oil as it enters the oil inner cavity 12 from the outer oil cavity 13 through the oil inlet 23. This reduces the probability of impurities entering the oil pump suction cavity 11, thereby reducing the amount of impurities carried into the lubrication system by the oil pump, reducing engine wear, and extending the engine's service life. Moreover, its structure is simple, easy to manufacture, and suitable for mass production.
[0030] The partition 22 includes a left partition 221 and a right partition 222; the right partition 222 is located to the right of the left partition 221. The enclosure 21 includes a left barrier 30 and a right barrier 40; the right barrier 40 is located to the right of the left barrier 30. Specifically, the left partition 221 and the left barrier 30 are integrally formed on the left shell 14, and the right partition 222 and the right barrier 40 are integrally formed on the right shell 15. By adopting the above structure, processing and manufacturing can be facilitated, and manufacturing costs can be reduced.
[0031] The left baffle 30 includes a left-positioned first connecting wall 31, a left-positioned second connecting wall 32, and a left-positioned third connecting wall 33. The left-positioned second connecting wall 32 is disposed between the left-positioned first connecting wall 31 and the left-positioned third connecting wall 33. The left partition 221 is disposed between the left-positioned third connecting wall 33 and the rear wall portion 16. From the end of the left-positioned second connecting wall 32 near the left-positioned first connecting wall 31 to the end near the left-positioned third connecting wall 33, the left-positioned second connecting wall 32 gradually bends and extends towards the rear wall portion 16. By adopting the above structure, the oil entering the oil cavity 12 can flow along the left-positioned third connecting wall 33, the left-positioned second connecting wall 32, and the left-positioned first connecting wall 31. The left baffle 30 can guide the flow of oil and reduce the flow resistance of oil.
[0032] In this embodiment, the extension trajectories of the left-positioned first connecting wall 31 and the left-positioned third connecting wall 33 can be set as straight lines. The left-positioned first connecting wall 31 and the left-positioned second connecting wall 32 are smoothly transitioned by an arc, and the left-positioned second connecting wall 32 and the left-positioned third connecting wall 33 are also smoothly transitioned by an arc, in order to further reduce oil flow resistance and eddy current generation. Specifically, the left-positioned first connecting wall 31 is located above the left-positioned third connecting wall 33.
[0033] The right baffle 40 includes a right-positioned first connecting wall 41, a right-positioned second connecting wall 42, and a right-positioned third connecting wall 43. The right-positioned second connecting wall 42 is disposed between the right-positioned first connecting wall 41 and the right-positioned third connecting wall 43. The right partition 222 is disposed between the right-positioned third connecting wall 43 and the rear wall portion 16. From the end of the right-positioned second connecting wall 42 near the right-positioned first connecting wall 41 to the end near the right-positioned third connecting wall 43, the right-positioned second connecting wall 42 gradually bends and extends towards the rear wall portion 16. By adopting the above structure, the oil entering the oil cavity 12 can flow along the right-positioned third connecting wall 43, the right-positioned second connecting wall 42, and the right-positioned first connecting wall 41. The right baffle 40 can guide the flow of oil and reduce the flow resistance of oil.
[0034] In this embodiment, the extension trajectories of the right-positioned first connecting wall 41 and the right-positioned third connecting wall 43 can be set as straight lines. The right-positioned first connecting wall 41 and the right-positioned second connecting wall 42 are smoothly transitioned by an arc, and the right-positioned second connecting wall 42 and the right-positioned third connecting wall 43 are smoothly transitioned by an arc, so as to further reduce the oil flow resistance and eddy current generation.
[0035] The extension trajectory of the right baffle 40 is consistent with the extension trajectory of the left baffle 30, and the extension trajectory of the right partition 222 is consistent with the extension trajectory of the left partition 221.
[0036] Specifically, the oil pump suction chamber 11 penetrates the right-side first connecting wall 41. The right-side first connecting wall 41 is located above the right-side third connecting wall 43. By placing the right-side first connecting wall 41 above the right-side third connecting wall 43, and ensuring that the oil pump suction chamber 11 penetrates the right-side first connecting wall 41, the penetration opening of the oil pump suction chamber 11 through the right-side first connecting wall 41 is positioned at a high horizontal level. During use, when the engine oil flows from the outer oil chamber 13 into the inner oil chamber 12 through the oil inlet 23, most of the impurities in the engine oil are trapped in the outer oil chamber 13 due to the action of the guide partition 20. The engine oil with a small amount of impurities enters the inner oil chamber 12 and flows along the inner oil chamber 12 toward the oil pump suction chamber 11. During this process, some impurities in the engine oil accumulate and sink under gravity, further reducing the probability of impurities entering the oil pump suction chamber 11 and improving the cleanliness of the engine oil entering the oil pump suction chamber 11.
[0037] The right partition 222 and the left partition 221 form the oil inlet 23 to facilitate its formation. In this embodiment, both the right partition 222 and the left partition 221 are provided with semi-circular grooves, and the semi-circular groove wall of the right partition 222 and the semi-circular groove wall of the left partition 221 form the oil inlet 23 to facilitate processing.
[0038] The oil inlet 23 is located in the middle of the partition 22; an impurity sedimentation zone 25 is formed between the partition 22 and the bottom wall of the oil outer cavity 13, so that the impurities blocked by the enclosure 21 are sedimented in the impurity sedimentation zone 25.
[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. An engine crankcase oil stabilizing baffle structure, characterized in that: The crankcase (10) includes a first partition body (50) and a second partition body (60). The crankcase (10) is provided with a cavity (17). The first partition body (50) and the second partition body (60) are both formed in the cavity (17). An inlet and outlet (70) for oil to enter and exit are formed between the first partition body (50) and the second partition body (60). A first rib (51) is provided at one end of the first partition body (50) near the second partition body (60). The end of the first rib (51) is formed on the crankcase (10). A second rib (61) is provided at one end of the second partition body (60) near the first partition body (50). The end of the second rib (61) is formed on the crankcase (10).
2. The engine crankcase oil stabilizing baffle structure as described in claim 1, characterized in that: The first partition body (50) includes a first left partition (52) and a first right partition (53); the first right partition (53) is located to the right of the first left partition (52); the second partition body (60) includes a second left partition (62) and a second right partition (63); the second right partition (63) is located to the right of the second left partition (62).
3. The engine crankcase oil stabilizing baffle structure as described in claim 2, characterized in that: The crankcase (10) includes a mating left housing (14) and a right housing (15), with the first left partition (52) and the second left partition (62) integrally formed on the left housing (14), and the first right partition (53) and the second right partition (63) integrally formed on the right housing (15).
4. The engine crankcase oil stabilizing baffle structure as described in claim 1, characterized in that: The crankcase (10) is provided with an oil pump suction chamber (11); the crankcase (10) is provided with a flow guide partition (20); the flow guide partition (20) divides the area between the first partition body (50) and the crankcase (10) into an inner oil chamber (12) and an outer oil chamber (13); the crankcase (10) includes a rear wall portion (16), the flow guide partition (20) is used to block impurities, and includes a retaining wall (21) and a partition (22); the retaining wall... The upper end of the baffle (21) is set on the crankcase (10), and the baffle (22) is set between the lower end of the baffle (21) and the rear wall (16); the baffle (22) is located above the bottom wall of the outer oil cavity (13), and the baffle (22) is provided with an oil inlet (23) connecting the inner oil cavity (12) and the outer oil cavity (13). The oil pump suction chamber (11) penetrates the baffle (21) and communicates with the inner oil cavity (12).
5. The engine crankcase oil stabilizing baffle structure as described in claim 4, characterized in that: The partition (22) includes a left partition (221) and a right partition (222); the right partition (222) is located to the right of the left partition (221); the enclosure (21) includes a left barrier (30) and a right barrier (40); the right barrier (40) is located to the right of the left barrier (30).
6. The engine crankcase oil stabilizing baffle structure as described in claim 5, characterized in that: The left baffle (30) includes a left first connecting wall (31), a left second connecting wall (32) and a left third connecting wall (33); the left second connecting wall (32) is disposed between the left first connecting wall (31) and the left third connecting wall (33); the left partition (221) is disposed between the left third connecting wall (33) and the rear wall (16).
7. The engine crankcase oil stabilizing baffle structure as described in claim 6, characterized in that: From the end of the left second connecting wall (32) near the left first connecting wall (31) to the end near the left third connecting wall (33), the left second connecting wall (32) gradually bends and extends toward the rear wall (16).
8. The engine crankcase oil stabilizing baffle structure as described in claim 7, characterized in that: The right stop (40) includes a right-positioned first connecting wall (41), a right-positioned second connecting wall (42), and a right-positioned third connecting wall (43); the right-positioned second connecting wall (42) is disposed between the right-positioned first connecting wall (41) and the right-positioned third connecting wall (43); the right partition (222) is disposed between the right-positioned third connecting wall (43) and the rear wall (16).
9. The engine crankcase oil stabilizing baffle structure as described in claim 8, characterized in that: From one end of the right-side second connecting wall (42) near the right-side first connecting wall (41) to one end near the right-side third connecting wall (43), the right-side second connecting wall (42) gradually bends and extends toward the rear wall portion (16).
10. The engine crankcase oil stabilizing baffle structure as described in claim 2, characterized in that: An impurity sedimentation zone (25) is formed between the partition (22) and the bottom wall of the oil outer cavity (13).