A motorcycle engine oil passage anti-clogging system
By setting anti-clogging protrusions and slag collection areas in the lubrication oil circuit of the motorcycle engine, the problem of oil circuit blockage is solved, and the reliability and economy of lubrication and cooling are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING ZONGSHEN ENGINE MFG
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-03
AI Technical Summary
Existing motorcycle engine oil circuits are prone to clogging, leading to wear or failure of parts. While machining flow-limiting holes is inexpensive, they are also prone to clogging, and assembling flow-limiting oil plugs is expensive and they are prone to falling off.
Anti-clogging protrusions and slag collection areas are set in the lubrication oil circuit. The anti-clogging protrusions are equipped with flow-limiting holes. When impurities flow towards the flow-limiting holes, they are flushed to the slag collection area to avoid clogging. The flow-limiting holes are designed as semi-circular or arc-shaped protrusions.
It effectively prevents oil circuit blockage, improves engine cooling and lubrication reliability, reduces costs, and is not easy to fall off; its structural design is ingenious and reliable.
Smart Images
Figure CN224452877U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motorcycle engine technology, specifically to a motorcycle engine anti-clogging oil passage. Background Technology
[0002] A motorcycle engine comprises a cylinder head, cylinder block, and crankcase. These components are interconnected by oil passages. The design of these oil passages stems from the rigid requirements of reliable lubrication and effective cooling for the engine's internal parts under high-speed, high-temperature, and high-pressure conditions. As engine performance (speed, power density) continues to improve, splash lubrication alone is far from sufficient. A forced pressure lubrication system must be established, and the oil must be precisely delivered to the friction pairs and areas with high heat loads through carefully designed oil passages.
[0003] Chinese patent document CN105240152A discloses a lubricating oil circuit for a motorcycle engine, including a cylinder head cover, a cylinder head, a cylinder block, and a crankcase. The cylinder head, cylinder block, and crankcase are assembled together by a set of double-ended studs and an extended nut, and the cylinder head cover and cylinder head are fixedly connected by screws. The crankcase has a lubricating oil inlet channel, a vertical small hole, and a horizontal hole. The lubricating oil first flows through the lubricating oil inlet channel, the vertical small hole, and the horizontal hole to the double-ended stud hole on the crankcase, then flows along the double-ended stud holes on the cylinder head and cylinder block, then flows through the inclined lubricating oil passage on the cylinder head to the straight lubricating oil passage, and finally passes through the center hole of a hollow locating pin into the cylinder head cover. The hollow locating pin is installed between the cylinder head cover and the cylinder head.
[0004] The existing technology has the following shortcomings: oil passages are provided at all locations in the engine that require cooling and lubrication, and these passages are connected to the engine's main oil passage. Oil distribution in the engine is achieved by controlling the minimum flow area of these oil passages. The main methods for controlling the minimum flow area are machining flow-limiting orifices and assembling flow-limiting plugs. However, assembling flow-limiting plugs is relatively expensive and carries the risk of the plugs falling off. While machining flow-limiting orifices is cheaper, it is relatively prone to clogging, leading to insufficient lubrication of components and the risk of abnormal wear or even failure. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a motorcycle engine anti-clogging oil passage, including a cylinder block, a cylinder head, and a crankcase. The cylinder block, cylinder head, and crankcase are provided with a lubricating oil passage. An anti-clogging protrusion is provided in the lubricating oil passage. A flow-limiting hole is provided on the anti-clogging protrusion. The flow-limiting hole passes through the anti-clogging protrusion and connects to the lubricating oil passage.
[0006] Preferably, the anti-blocking protrusion is a semi-circular protrusion or an arc-shaped protrusion.
[0007] To facilitate the collection of residue and prevent it from moving in the oil circuit, the anti-clogging protrusion and the lubricating oil circuit together form a slag collection area.
[0008] Preferably, the lubrication circuit includes a cylinder block oil passage, a cylinder head oil passage, and a crankcase oil passage. The cylinder block oil passage is located inside the cylinder body, the cylinder head oil passage is located inside the cylinder head, and the crankcase oil passage is located inside the crankcase. The cylinder block oil passage, the cylinder head oil passage, and the crankcase oil passage are connected in sequence.
[0009] Preferably, the anti-clogging protrusion and slag collection area are located on the upper end face of the cylinder block oil passage, and the flow limiting hole connects the cylinder block oil passage and the cylinder head oil passage.
[0010] For ease of lubrication and heat dissipation, the inlet of the cylinder block oil passage is located on the lower end face of the cylinder block, and the outlet of the cylinder block oil passage is located on the upper end face of the cylinder block. The flow cross-section of the cylinder block oil passage is larger than the flow cross-section of the flow limiting orifice.
[0011] Preferably, the crankcase oil passage and the cylinder block oil passage are connected at the inlet on the lower end face of the cylinder block, and the cylinder head oil passage and the flow restrictor are connected at the outlet on the upper end face of the cylinder block.
[0012] This utility model has the following beneficial effects:
[0013] 1. When impurities in the lubricating oil circuit of this utility model flow toward the flow-limiting hole, they will be swept away by the lubricating oil flow and move from the opening of the flow-limiting hole to the area around the anti-blocking protrusion. The arc surface of the anti-blocking protrusion can guide the impurities outward, preventing them from entering the flow-limiting hole, and they can be collected in the slag collection area to prevent the flow-limiting hole from being blocked by impurities. There is no need to worry about the anti-blocking protrusion falling off or the flow-limiting hole being blocked.
[0014] 2. This utility model has the advantages of ingenious structural design, convenient and reliable use, and low cost. It can effectively ensure the cooling and lubrication of the engine cylinder head and improve the reliability of the engine. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of an embodiment of the anti-clogging oil circuit for a motorcycle engine according to this utility model;
[0016] Figure 2 for Figure 1 A schematic diagram of the structure of the middle cylinder block. Detailed Implementation
[0017] The following detailed description illustrates the specific implementation method:
[0018] The reference numerals in the accompanying drawings of the instruction manual include: cylinder block 1, cylinder block oil passage 2, flow limiting hole 3, anti-clogging boss 4, cylinder head 5, cylinder head oil passage 6, crankcase 7, crankcase oil passage 8, lower end face 9, upper end face 10, and slag collection area 11.
[0019] Example 1
[0020] like Figure 1 and 2 As shown, a motorcycle engine anti-clogging oil passage includes a cylinder block 1, a cylinder head 5, and a crankcase 7. The cylinder block 1, cylinder head 5, and crankcase 7 are provided with lubricating oil passages, including a cylinder block oil passage 2, a cylinder head oil passage 6, and a crankcase oil passage 8. The cylinder block oil passage 2 is located within the cylinder block 1, the cylinder head oil passage 6 is located within the cylinder head 5, and the crankcase oil passage 8 is located within the crankcase 7. The cylinder block oil passage 2, cylinder head oil passage 6, and crankcase oil passage 8 are sequentially connected. An anti-clogging boss 4 is provided within the cylinder block oil passage 2. A flow-limiting hole 3 is provided in the center of the anti-clogging boss 4, and the flow-limiting hole 3 penetrates the anti-clogging boss 4 and connects to the lubricating oil passages. The anti-clogging boss 4 is a semi-circular boss.
[0021] The anti-clogging protrusion 4 and the cylinder block oil passage 2 together form a slag collection area 11. When impurities in the oil passage flow towards the flow limiting hole 3, they are washed into the slag collection area 11 by the lubricating oil flow, effectively ensuring the passability of the oil passage. The anti-clogging protrusion 4 and the slag collection area 11 are located on the upper end face 10 of the cylinder block oil passage 2. The anti-clogging protrusion 4 protrudes towards the crankcase oil passage 8. The flow limiting hole 3 connects the cylinder block oil passage 2 and the cylinder head oil passage 6.
[0022] The inlet of the cylinder block oil passage 2 is located on the lower end face 9 of the cylinder block 1, and the outlet of the cylinder block oil passage 2 is located on the upper end face 10 of the cylinder block 1. The flow cross-section of the cylinder block oil passage 2 is larger than the flow cross-section of the flow limiting hole 3. The flow cross-section of the cylinder block oil passage 2 is large and long, and is usually formed by casting. The outlet of the flow limiting hole 3 is located on the upper end face 10 of the cylinder block 1. The flow cross-sectional area of the flow limiting hole 3 is small and short, and is usually formed by machining. The cylinder block oil passage 2 is connected to the flow limiting hole 3 and runs through both the upper and lower ends of the cylinder block 1.
[0023] The crankcase oil passage 8 and the cylinder block oil passage 2 are connected at the inlet of the lower end face 9 of the cylinder block 1, and the cylinder head oil passage 6 and the flow limiting hole 3 are connected at the outlet of the upper end face 10 of the cylinder block 1.
[0024] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A lubrication oil passage for a motorcycle engine, comprising a cylinder block, a cylinder head, and a crankcase, wherein the cylinder block, cylinder head, and crankcase are provided with lubrication oil passages, characterized in that, The lubricating oil passage is provided with an anti-clogging protrusion, and the anti-clogging protrusion is provided with a flow-limiting hole, which passes through the anti-clogging protrusion and connects to the lubricating oil passage.
2. The motorcycle engine anti-blockage oil passage according to claim 1, characterized in that: The anti-blocking protrusion is a semi-circular protrusion or an arc-shaped protrusion.
3. The motorcycle engine anti-blockage oil passage according to claim 2, characterized in that: The anti-clogging protrusion and the lubrication oil passage together form a slag collection area.
4. The motorcycle engine anti-blockage oil passage according to claim 3, characterized in that: The lubrication circuit includes a cylinder block oil passage, a cylinder head oil passage, and a crankcase oil passage. The cylinder block oil passage is located inside the cylinder body, the cylinder head oil passage is located inside the cylinder head, and the crankcase oil passage is located inside the crankcase. The cylinder block oil passage, the cylinder head oil passage, and the crankcase oil passage are connected in sequence.
5. The motorcycle engine anti-blockage oil passage according to claim 4, characterized in that: The anti-clogging protrusion and slag collection area are located on the upper end face of the cylinder block oil passage, and the flow limiting hole connects the cylinder block oil passage and the cylinder head oil passage.
6. The motorcycle engine anti-blockage oil passage according to claim 5, characterized in that: The inlet of the cylinder block oil passage is located on the lower end face of the cylinder block, and the outlet of the cylinder block oil passage is located on the upper end face of the cylinder block. The flow cross-section of the cylinder block oil passage is larger than the flow cross-section of the flow limiting orifice.
7. The motorcycle engine anti-blockage oil passage according to claim 6, characterized in that: The crankcase oil passage and the cylinder block oil passage are connected at the inlet on the lower end face of the cylinder block, and the cylinder head oil passage and the flow restrictor are connected at the outlet on the upper end face of the cylinder block.