Engine and motorcycle

Abstract

The present application relates to the technical field of motorcycle accessories, and discloses an engine with an oil delivery pipeline for delivering engine oil, the oil delivery pipeline comprising a first oil passage arranged on a crankcase and a second oil passage arranged on a cylinder, an oil inlet of the first oil passage being in communication with a central hole of a crank bearing seat, an oil outlet of the first oil passage being in communication with an oil inlet of the second oil passage, the second oil passage extending from the cylinder to the crankcase, and an oil outlet of the second oil passage being located on a joint surface of the cylinder. The engine can deliver engine oil from the crankcase to the cylinder through a shorter path without increasing machining processes and special components, the arrangement of the first oil passage and the second oil passage is not affected by relevant dimensions such as cylinder diameter and water jacket width, and the structure is simple and reliable and has excellent use effect. The present application also provides a motorcycle, which also has the advantage that the arrangement of the oil passage is not affected by cylinder diameter, crank span, water jacket width and the like, and the motorcycle has compact structure and good lightweight effect.

Description

Technical Field

[0001] The present invention relates to the field of motorcycle accessories, in particular to an engine and a motorcycle comprising the same. Background Art

[0002] As a crucial component of a motorcycle engine, the lubrication system plays a crucial role in ensuring the proper operation of the motorcycle. The cylinder head, a structure densely packed with high-speed moving mechanisms, is lubricated and cooled by engine oil, a crucial element in engine performance. Therefore, the design of the oil passages in the cylinder head is a crucial element of motorcycle engine design. However, due to dimensional limitations such as cylinder diameter and water jacket width, connecting the oil passages in the cylinder head often requires manufacturing with multiple angled bevels or adding oil passages to the joint surface. This widens the joint surface, increases design complexity, and increases engine size, hindering miniaturization and lightweighting. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide an engine with a unique oil channel design, which has the advantages of ingenious structural design, simplicity and reliability, and excellent oil delivery effect.

[0004] Based on this, the present invention provides an engine, including an oil pan, an oil pump, an oil filter and an oil pipeline for transferring oil, the oil pipeline including a first oil channel provided on the crankcase and a second oil channel provided on the cylinder, the oil inlet of the first oil channel being connected to the center hole of the crankshaft bearing seat, the oil outlet of the first oil channel being connected to the oil inlet of the second oil channel, the second oil channel extending from the cylinder to the crankcase, the cylinder including a cylinder block and a cylinder head, the oil outlet of the second oil channel being located on the joint surface between the cylinder block and the cylinder head.

[0005] In some embodiments of the present application, the first oil channel is located on the inner side of the crankcase, the second oil channel is located on the outer side of the cylinder, the first oil channel and the second oil channel are respectively located in different planes, and the oil outlet of the first oil channel is connected to the oil inlet of the second oil channel through a transition oil channel.

[0006] In some embodiments of the present application, one end of the transition oil passage close to the second oil passage extends outward to the outside of the crankcase, and the crankcase is provided with a fastening bolt that matches the diameter of the transition oil passage. The fastening bolt is passed through the transition oil passage to seal the transition oil passage.

[0007] In some embodiments of the present application, a timing chain tensioner is included, and the fastening bolt is also used to fix the timing chain tensioner.

[0008] In some embodiments of the present application, the center of the oil pump is located below and behind the center of the crankshaft.

[0009] In some embodiments of the present application, the angle between the line connecting the center of the oil pump and the center of the crankshaft and the perpendicular line of the crankcase surface is less than 30°.

[0010] In some embodiments of the present application, the suction port and the discharge port of the oil pump are located on both sides of the crankshaft bearing seat bolts.

[0011] In some embodiments of the present application, a water pump is provided in the engine, and the oil filter is provided below the water pump.

[0012] In some embodiments of the present application, the oil filter is located between the right bearing seat and the middle bearing seat of the crankshaft.

[0013] Another object of the present application is to provide a motorcycle, characterized in that it includes the above-mentioned engine.

[0014] The embodiment of the present invention provides an engine, which has the following advantages compared with the prior art:

[0015] The present invention provides an engine having an oil pipeline for transferring engine oil. Specifically, the oil pipeline includes a first oil channel arranged along the edge of a crankcase and a second oil channel arranged along the edge of a cylinder. The oil inlet of the first oil channel is connected to the center hole of a crankshaft bearing seat, and the oil outlet of the first oil channel is connected to the oil inlet of the second oil channel. The second oil channel extends from the cylinder to the crankcase, and the oil outlet of the second oil channel is located on the joint surface of the cylinder. Based on the above structure, the first oil channel and the second oil channel are directly processed along the edges of the crankcase and the cylinder, which can effectively avoid the influence of relevant dimensions such as cylinder diameter and water jacket width on the oil channel setting in the previous design. For this reason, the first oil channel and the second oil channel can be set as straight pipelines inclined upward relative to the horizontal plane. The straight pipeline design of the first oil channel and the second oil channel also avoids oblique processing with multi-angle deflection. The first oil channel and the second oil channel form a certain angle. The oil inlet of the first oil channel is connected to the center hole of the crankshaft bearing seat, and the oil outlet of the second oil channel is located on the joint surface of the cylinder. The first oil channel and the second oil channel can transfer the engine oil from the crankcase to the cylinder through a shorter path. The above structural design does not increase the processing steps and does not add special components in use. While completing the oil transmission, it ensures the compactness of the engine structure, which is conducive to the miniaturization and lightweight of the engine.

[0016] In addition, the present invention also provides a motorcycle. Since it adopts the above-mentioned engine, it also has the advantage that the layout of the oil channel is not affected by the cylinder diameter, crankshaft span, water jacket width, etc., and does not require additional processing technology and special components. The motorcycle has a compact structure and good lightweight effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first structural schematic diagram of an oil pipeline according to an embodiment of the present invention;

[0018] Figure 2 This is a second structural schematic diagram of an oil pipeline according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 Detailed drawing of point A in the figure;

[0020] Figure 4 This is a third structural schematic diagram of the oil pipeline according to an embodiment of the present invention.

[0021] In the figure, 1. crankcase; 2. cylinder; 3. first oil channel; 4. second oil channel; 5. transition oil channel; 6. fastening bolt; 7. timing chain tensioner. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0023] It should be understood that the present invention uses terms such as "front" and "back" to describe various types of information, but such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, "front" information could also be referred to as "back" information, and "back" information could also be referred to as "front" information without departing from the scope of the present invention.

[0024] like Figures 1 to 4 As shown, an embodiment of the present invention provides a cylinder-box integrated engine, which includes an oil pan, an oil pump, an oil filter, and an oil pipeline for transferring oil. Specifically, the oil is sucked from the bottom of the oil pan by the oil pump and pressurized. It is then pumped to the oil filter through an inlet passage (oil pipeline) formed inside the crankcase. After being filtered by the oil filter, it flows to various parts that require lubrication to achieve lubrication of various components and ensure the normal operation of the engine. The oil pipeline includes a first oil channel 3 provided on the crankcase 1 and a second oil channel 4 provided on the cylinder 2. The oil inlet of the first oil channel 3 is connected to the center hole of the crankshaft bearing seat, and the oil outlet of the first oil channel 3 is connected to the oil inlet of the second oil channel 4. The second oil channel 4 extends from the cylinder 2 to the crankcase 1. The cylinder 2 includes a cylinder block and a cylinder head. The oil outlet of the second oil channel 4 is located at the joint surface between the cylinder block and the cylinder head.

[0025] Based on the above structure, the first and second oil passages 3 and 4 are machined directly along the edges of the crankcase 1 and cylinder 2, effectively avoiding the influence of related dimensions such as cylinder diameter and water jacket width on the oil passage layout in conventional designs. Consequently, the first and second oil passages 3 and 4 can be designed as straight pipelines that are inclined upward relative to the horizontal plane. This straight pipeline design also avoids the need for multi-angle deflection. The first and second oil passages 3 and 4 form a certain angle. The oil inlet of the first oil passage 3 is connected to the center hole of the crankshaft bearing seat, and the oil outlet of the second oil passage 4 is located on the joint surface of the cylinder 2. The first and second oil passages 3 and 4 can transfer oil from the crankcase 1 to the cylinder 2 via a shorter path. This structural design does not increase machining steps or special components, while ensuring a compact engine structure while achieving oil transfer, contributing to engine miniaturization and lightweighting. When the lubrication passage is not arranged in front of the oil pump, the engine length in the front-to-back direction is not increased, which does not increase the overall size and weight of the engine, thus contributing to lightweighting.

[0026] Furthermore, the end face of the lubrication passage is not higher than the sealing surface of the oil pump, and the processing depth is deep, which increases the difficulty of drilling. The passage on the oil pump cover is smaller than the passage on the box body, ensuring that the oil pump function is not affected by avoiding the plug.

[0027] Furthermore, the present invention addresses the taper angle left by drilling at the intersection of the first and second oil passages, ensuring smoother oil passage connectivity and reducing oil turbulence, ensuring consistent oil pressure and flow rate, and minimizing mechanical losses. Placing the pressure-regulating valve at the intersection simultaneously stabilizes pressure and prevents oil blockage, simplifying the design and reducing costs.

[0028] In addition, the pressure regulating valve is far away from the oil filter, which makes the oil circuit of the pressure stabilizing section longer and the oil pressure is more stable before the oil enters the oil filter, which helps to reduce the damage of oil pressure fluctuations to the paper filter of the oil filter.

[0029] Furthermore, in order to improve the continuity of the second oil channel 4, the cylinder 2 and the crankcase 1 are integrated. This design further improves the structural compactness of the engine and is conducive to the miniaturization and lightweighting of the engine.

[0030] Furthermore, in some embodiments of the present application, the first oil passage 3 is located on the inner side of the crankcase 1, and the second oil passage 4 is located on the outer side of the cylinder 2, that is, the first oil passage 3 and the second oil passage 4 are located in different planes. In this case, to ensure smooth communication between the first oil passage 3 and the second oil passage 4, a transition oil passage 5 is provided on the crankcase 1, and the oil outlet of the first oil passage 3 and the oil inlet of the second oil passage 4 are respectively connected to the transition oil passage 5. The provision of the transition oil passage 5 further reduces the design requirements of the first oil passage 3 and the second oil passage 4, and increases the corresponding setting range of the first oil passage 3 and the second oil passage 4. Specifically, in an embodiment of the present invention, the transition oil passage 5 is arranged horizontally and perpendicular to the first oil passage 3 and the second oil passage 4, respectively. The horizontally arranged transition oil passage 5 can freely adjust the setting length and setting direction according to the setting position of the first oil passage 3 and the second oil passage 4 to ensure the connection between the first oil passage 3 and the second oil passage 4. The structure is simple and reliable, and the connection effect is excellent.

[0031] Furthermore, the transition oil passage 5 of the present application has one end adjacent to the second oil passage 4 extending outward to form an opening outside the crankcase 1. Based on this structure, an operator can quickly drain the oil from the passage through the opening of the transition oil passage 5 or install maintenance equipment through the opening into the first oil passage 3 and the second oil passage 4, facilitating subsequent inspection and maintenance.

[0032] It should also be noted that to ensure the normal operation of the transition oil passage 5, a plug must be installed to seal the opening of the transition oil passage 5. Specifically, in this embodiment of the present invention, the crankcase 1 is provided with a fastening bolt 6 that matches the transition oil passage 5. The fastening bolt 6 is inserted into the transition oil passage 5 to seal the transition oil passage 5. Furthermore, while the fastening bolt 6 effectively seals the transition oil passage 5, the diameter and length of the stud can be adjusted according to actual conditions. Adjusting the stud diameter and length will also change the space in the transition oil passage 5, thereby affecting the oil flow rate within the pipeline and thus enabling adjustment of the oil flow rate.

[0033] Furthermore, in some embodiments of the present application, the engine also includes a timing chain tensioner 7, and the fastening bolt 6 used to seal the transition oil channel 5 can also be used as a fastener of the timing chain tensioner 7, and the timing chain tensioner 7 is fixed to the side of the crankcase 1, and the fastening bolt 6 fixes the timing chain tensioner 7.

[0034] Optionally, in some embodiments of the present application, the engine includes a crankshaft (not shown) and an oil pump (not shown), with the center of the oil pump located below and behind the center of the crankshaft. Furthermore, in some embodiments of the present application, the angle between the line connecting the center of the oil pump and the center of the crankshaft and the perpendicular to the crankcase 1 assembly surface is less than 30°, and the suction port and discharge port of the oil pump are located on either side of the crankshaft bearing seat assembly bolt. Based on the above structure, the adjustment of the position of the oil pump and the crankshaft changes the arrangement of the prior art, further improving the structural compactness of the engine, and can also save space for the arrangement of other structures, which is conducive to the lightweighting and miniaturization of the engine and the motorcycle as a whole.

[0035] Optionally, in some embodiments of the present application, the engine further includes an oil filter (not shown). Considering the compact structure, lightweight, and miniaturized design of the engine, the oil filter is positioned below the water pump. Furthermore, in some embodiments of the present application, the oil filter is positioned between the right bearing seat and the middle bearing seat of the crankshaft. Furthermore, the oil filter of the present application is connected to the oil pump via a connecting pipe, receiving oil transmitted from the oil pump, filtering the oil, and transmitting it to various components within the engine.

[0036] In summary, the present invention provides an engine having an oil pipeline for transferring engine oil. The oil pipeline includes a first oil channel arranged along the edge of the crankcase and a second oil channel arranged along the edge of the cylinder. The oil inlet of the first oil channel is connected to the center hole of the crankshaft bearing seat, and the oil outlet of the first oil channel is connected to the oil inlet of the second oil channel. The second oil channel extends from the cylinder to the crankcase, and the oil outlet of the second oil channel is located on the joint surface of the cylinder. Compared with the prior art, this engine can transfer engine oil from the crankcase to the cylinder through a shorter path without adding additional processing steps or special components. The arrangement of the first and second oil channels is not affected by relevant dimensions such as cylinder diameter and water jacket width, resulting in a simple and reliable structure and excellent performance.

[0037] In addition, the present invention also provides a motorcycle that adopts the above-mentioned engine, and therefore has the same advantage that the arrangement of the oil channel is not affected by the cylinder diameter, crankshaft span, water jacket width, etc., does not require additional processing technology, and does not require additional special components in use. The motorcycle has a compact structure and good lightweight effect.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An engine, characterized in that: The invention also includes an oil pipeline for transferring engine oil, and an oil pan, an oil pump, and an oil filter connected in sequence via the oil pipeline. The oil pipeline includes a first oil passage provided on the crankcase and a second oil passage provided on the cylinder. The oil inlet of the first oil passage is connected to the center hole of the crankshaft bearing seat. The oil outlet of the first oil passage is connected to the oil inlet of the second oil passage. The second oil passage extends from the cylinder to the crankcase. The cylinder includes a cylinder block and a cylinder head. The oil outlet of the second oil passage is located at the joint surface between the cylinder block and the cylinder head. The first oil passage is located on the inner side of the crankcase, and the second oil passage is located on the outer side of the cylinder. The first oil passage and the second oil passage are located in different planes, and the oil outlet of the first oil passage is connected to the oil inlet of the second oil passage through a transition oil passage. One end of the transition oil passage adjacent to the second oil passage extends outwardly to the outside of the crankcase, and a fastening bolt matching the diameter of the transition oil passage is provided on the crankcase. The fastening bolt passes through the transition oil passage to seal the transition oil passage. comprising a timing chain tensioner, wherein the fastening bolt is further used to fix the timing chain tensioner; The center of the oil pump is located at the rear and lower part of the center of the crankshaft.

2. The engine according to claim 1, characterized in that The angle between the connecting line of the center of the oil pump and the center of the crankshaft and the vertical line of the crankcase surface is less than 30°.

3. The engine according to claim 2, characterized in that The suction port and the discharge port of the oil pump are located on both sides of the crankshaft bearing seat bolt.

4. The engine according to claim 1, characterized in that A water pump is provided in the engine, and the oil filter is provided below the water pump. The oil filter is located between the right bearing seat and the middle seat of the crankshaft.

5. The engine according to claim 1, characterized in that The power transmission pair is centrally arranged on the right side of the engine, and the third layer of the engine is provided with an oil pump driving gear pair, wherein the gear is located on the outside and the oil pump is located on the inside.

6. A motorcycle, characterized in that: Comprising the engine according to any one of claims 1-5.

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