Engine and motorcycle

Abstract

The embodiment of the present application provides an engine and a motorcycle, the engine comprising: a case, the case having a main oil passage penetrating left and right; an oil plug, the oil plug being blocked at an end of the main oil passage; a crankshaft, the crankshaft being rotatably arranged on the case; and an oil pump, the oil pump being arranged on the case, and the oil pump being located at a position below and behind the crankshaft, one end of the main oil passage being arranged in the oil pump, and the oil pump covering the oil plug blocked at the end. The technical problem that the lubrication passage flowing to the crankshaft is arranged at a front position of the oil pump in the related art, the end surface position of the lubrication passage is higher than the sealing surface of the oil pump, the machining depth is deep, and the drilling machining difficulty is increased is effectively solved.

Description

Technical Field

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

[0002] Motorcycles are two- or three-wheeled vehicles powered by electricity, gasoline, or hybrid power. They are lightweight, flexible, and fast, and are widely used for patrol, passenger and freight transportation, and as sports equipment. Generally speaking, motorcycles are categorized as street bikes, road racing bikes, off-road bikes, cruisers, and touring bikes.

[0003] Currently, motorcycle engine oil is drawn into the oil pump through the oil inlet at the bottom of the oil pan. After being pressurized, it is pumped through an inlet passage (oil channel) formed inside the crankcase to the oil filter. After filtration, it flows to various parts requiring lubrication. In related technologies, the lubrication passage to the crankshaft is arranged in front of the oil pump, placing the end surface of the lubrication passage higher than the oil pump sealing surface. This results in a deeper machining depth and increases the difficulty of drilling. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide an engine and a motorcycle, which are used to solve the technical problem in the related art that the lubrication passage flowing to the crankshaft is arranged in front of the oil pump, so that the end face of the lubrication passage is higher than the sealing surface of the oil pump, resulting in a deeper processing depth and increased difficulty in drilling processing.

[0005] To solve the above technical problems, the embodiments of the present invention adopt the following technical solutions:

[0006] An embodiment of the present invention provides an engine, comprising:

[0007] A manifold, the manifold having main oil passages running through the left and right sides;

[0008] An oil blockage, wherein the oil blockage is sealed at an end of the main oil passage;

[0009] A crankshaft rotatably mounted on the housing;

[0010] An oil pump is mounted on the crankcase and is located at a lower rear position of the crankshaft. One end of the main oil channel is located in the oil pump, and the oil pump covers and seals the oil blockage on the end.

[0011] In some embodiments of the present application, the main oil gallery is located directly below the crankshaft.

[0012] In some embodiments of the present application, the oil pump has an oil passage, one end of the main oil passage located in the oil pump is connected to the oil passage, and the oil plug that blocks the end is located on the oil passage.

[0013] In some embodiments of the present application, a cross-sectional area of ​​the oil passage is smaller than a cross-sectional area of ​​the main oil passage.

[0014] In some embodiments of the present application, the oil pump includes:

[0015] The oil pump body is mounted on the box.

[0016] A cover body is provided on the oil pump body, and the oil passage is provided on the cover body.

[0017] In some embodiments of the present application, the box assembly includes:

[0018] box lid;

[0019] The box body, the oil pump, the crankshaft, the main oil channel and the oil plug are all arranged on the box body, and the box cover and the box body are connected by a connecting piece.

[0020] In some embodiments of the present application, the engine further comprises:

[0021] A supporting component, wherein the supporting component is mounted on the box body;

[0022] A bearing component is mounted on the supporting component, the crankshaft is mounted on the bearing component, one of the connecting pieces connecting the case cover and the case body passes through the supporting component, and the oil pump is adjacent to the connecting piece passing through the supporting component.

[0023] In some embodiments of the present application, the engine further comprises:

[0024] The oil pump has an oil suction port and an oil discharge port, and the oil suction port and the oil discharge port are respectively arranged on both sides of the connecting member passing through the supporting component.

[0025] In some embodiments of the present application, the engine further comprises:

[0026] a filter, the filter being connected to the oil pump and the main oil channel;

[0027] The supporting component comprises:

[0028] a right seat, the right seat being mounted on the box body;

[0029] An intermediate seat is mounted on the box body:

[0030] The bearing component comprises:

[0031] a first bearing, the first bearing being mounted on the right seat, and the right end of the crankshaft being mounted on the first bearing;

[0032] a second bearing, the second bearing being mounted on the intermediate seat, and the intermediate portion of the bearing being mounted on the second bearing;

[0033] Wherein, the filter is arranged between the right seat and the middle seat.

[0034] The present invention further provides a motorcycle, which includes the engine as described above.

[0035] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0036] An embodiment of the present invention provides an engine, which includes: a coupling, an oil plug, a crankshaft and an oil pump. The engine converts the forward and backward motion into rotational motion under the action of the connecting rod through the crankshaft to provide power for the secondary shaft output of the engine. The crankshaft provides power to the engine. The oil pump draws oil from the oil suction port at the bottom of the oil pan, pressurizes it, and then transports it to various parts that need lubrication through the main oil channel and the branch oil channel inside the coupling for lubrication. The oil pump is located at the rear and lower position of the crankshaft. The oil pump covers and seals the oil plug on this end. There is no need to add a reserved position to avoid the oil plug. The oil plug can be directly arranged below the oil pump joint surface and share a space with the oil pump, which can effectively improve the engine. The space utilization of the engine is improved, and the structure is simple. Compared with the structure in which the oil channel is set in front of or behind the oil pump, the length of the engine in the front-to-back direction is shortened, which is beneficial to the lightweight of the engine. At the same time, since the oil pump is installed in the box, it is a depression with a certain depth, and the main oil channel is arranged on the oil pump. When the main oil channel is processed, it is processed on the basis of the depression of the oil pump, which can reduce the depth of the drilling. On the one hand, it can reduce the difficulty of drilling, and on the other hand, it can effectively improve the drilling efficiency and reduce the wear of the drill bit. In addition, when the oil is blocked and leaked, the oil is returned to the oil pump, which will not cause the oil pressure in the oil channel to drop. The leaked engine oil does not need to enter the oil pump from the oil suction port again, which reduces the mechanical loss and improves the oil pumping efficiency.

[0037] An embodiment of the present invention also provides a motorcycle, which uses the engine as described above and can effectively solve the technical problem in the related art that the lubrication passage flowing to the crankshaft is arranged in front of the oil pump, so that the end face of the lubrication passage is higher than the sealing surface of the oil pump, resulting in a deeper processing depth and increased difficulty in drilling processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0039] Figure 1 This is a first structural schematic diagram of an engine provided by an embodiment of the present invention;

[0040] Figure 2 is a second structural schematic diagram of an engine provided by an embodiment of the present invention;

[0041] Figure 3 is a third structural schematic diagram of an engine provided by an embodiment of the present invention;

[0042] Figure 4 is a fourth structural schematic diagram of an engine provided by an embodiment of the present invention;

[0043] Figure 5 is a fifth structural schematic diagram of an engine provided by an embodiment of the present invention;

[0044] Figure 6 is a sixth structural schematic diagram of an engine provided by an embodiment of the present invention;

[0045] Figure 7 is a seventh structural schematic diagram of an engine provided by an embodiment of the present invention;

[0046] Figure 8 is an eighth structural schematic diagram of an engine provided by an embodiment of the present invention;

[0047] Figure 9 is a ninth structural schematic diagram of an engine provided by an embodiment of the present invention;

[0048] Figure 10 is a tenth structural schematic diagram of an engine provided by an embodiment of the present invention;

[0049] Figure 11 This is an eleventh structural schematic diagram of an engine provided by an embodiment of the present invention;

[0050] Figure 12 is a twelfth structural schematic diagram of an engine provided by an embodiment of the present invention;

[0051] Figure 13 This is the thirteenth structural schematic diagram of an engine provided by an embodiment of the present invention.

[0052] in:

[0053] 100, output shaft; 200, crankshaft; 300, countershaft; 400, shift shaft; 500, balance shaft; 600, water pump; 700, oil pump; 701, oil passage; 702, oil blockage; 101, first gear; 102, first sprocket; 103, sixth gear; 201, second gear; 202, fourth gear; 301, third gear; 401, fifth gear; 501, seventh gear; 601, case surface; 701, case body; 800, case cover; 801, case; 802, main oil gallery; 803, first oil gallery; 804, second oil gallery; 805, filter; 900, connector. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0055] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0056] In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, replaceable connections, or integrated connections. They can refer to mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediate medium. They can also refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present application based on the specific circumstances.

[0057] 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.

[0058] like Figure 1-13 As shown, Figure 1 A schematic structural diagram of an engine provided by an embodiment of the present invention;

[0059] This embodiment provides an engine, which includes:

[0060] A manifold 801 having a main oil passage 802 extending therethrough;

[0061] An oil plug 702 , the oil plug 702 being sealed at the end of the main oil passage 802 ;

[0062] A crankshaft 200 rotatably mounted on the closing case 801 ; and

[0063] The oil pump 700 is installed on the combination box 801, and the oil pump 700 is located at the rear and lower position of the crankshaft 200. One end of the main oil channel 802 is provided in the oil pump 700, and the oil pump 700 covers the oil plug 702 sealed on the end.

[0064] The engine converts the forward and backward motion into rotational motion under the action of the connecting rod through the crankshaft 200 to provide power for the secondary shaft output of the engine. The crankshaft 200 provides power for the engine, and the oil pump 700 draws the oil from the oil suction port at the bottom of the oil pan, pressurizes it, and then delivers it to various parts that need lubrication through the main oil channel 802 and the branch oil channel inside the combination box 801 for lubrication. The oil pump 700 is located at the rear and lower position of the crankshaft 200. The oil pump 700 covers the oil plug 702 sealed on this end, and there is no need to increase the reserved position to avoid the oil plug 702. The oil plug 702 can be directly arranged in the oil pump 700 and share a space with the oil pump 700, which can effectively improve the space utilization of the engine, and has a simple structure, shortens the length of the engine in the front and rear direction, and is conducive to the lightweight of the engine. At the same time, since the oil pump 700 is installed When the box 801 is assembled, it is a depression with a certain depth. The main oil channel 802 is arranged on the oil pump 700. When the main oil channel 802 is processed, it is processed on the basis of the depression of the oil pump 700, which can reduce the depth of drilling. On the one hand, it can reduce the difficulty of drilling, and on the other hand, it can effectively improve the drilling efficiency and reduce drill bit loss. In addition, when the oil blockage 702 leaks, the oil is also returned to the oil pump 700, and will not be lost and avoid pollution to the outside, and will not cause a drop in the oil pressure in the oil channel; the leaked oil does not need to enter the oil pump again from the oil suction port, which reduces mechanical losses and improves oil pumping efficiency; and thus effectively solves the technical problem that the lubrication passage flowing to the crankshaft 200 is arranged in front of the oil pump 700, so that the end face of the lubrication passage is higher than the sealing surface of the oil pump 700, resulting in a deeper processing depth and increased difficulty in drilling.

[0065] In the field of existing motorcycles, there is a certain bottleneck for functional improvement of motorcycles, and motorcycles are light and flexible, and have certain requirements for weight and volume space, thereby deriving the need for lightweight and compact motorcycles;

[0066] The engine provided by the embodiment is based on this demand. By setting one of the oil plugs 702 in the oil pump 700, the setting does not need to consider avoiding the oil plug 702, which can be directly set in the oil pump 700, shielded by the oil pump 700, and reduce the setting of the avoiding space of the oil plug 702, so that the compactness of the engine is better, the lightweight degree is higher, and the motorcycle is lightweight and compact.

[0067] The engine of the embodiment does not arrange the main oil passage in front of the oil pump, does not lengthen the length of the engine in the front-rear direction, and does not cause the overall large size and weight increase of the engine, which is beneficial to lightweight. The end surface position of the main oil passage is not higher than the sealing surface of the oil pump, thereby avoiding the problem of deep machining depth and increasing the difficulty of drilling processing; the oil passage on the cover body of the oil pump is smaller than the main oil passage of the integrated case, which ensures that the function of the oil pump is not affected by avoiding the oil plug.

[0068] In some embodiments of the present application, the engine further comprises:

[0069] The main oil passage 802 is located directly below the crankshaft 200.

[0070] The main oil passage 802 is located directly below the crankshaft 200, so that the main oil passage 802 can quickly deliver oil to the parts that need to be lubricated through each oil distribution passage, shorten the path of the oil distribution passage, and quickly lubricate the crankshaft 200.

[0071] In some embodiments of the present application, the oil pump 700 has an oil passage 701, one end of the main oil passage 802 in the oil pump 700 is in communication with the oil passage 701, and the oil plug 702 blocking the end is located on the oil passage 701.

[0072] The oil passage 701 is a groove formed inside the oil pump 700, which can facilitate the flow of oil in the oil pump 700 for pressurization, and then be delivered to each component requiring lubrication through the oil passage for lubrication. One end of the main oil passage 802 is connected to the oil passage 701, and the oil plug 702 is plugged on the end of the main oil passage 802 on the oil passage 701. In this way, even if the main oil passage 802 leaks from the oil plug 702, the oil will enter the oil passage 701 and will not flow out of the engine, thus avoiding pollution.

[0073] In some embodiments of the present application, the cross-sectional area of the oil passage 701 is smaller than that of the main oil passage.

[0074] The oil passage 701 on the oil pump 700 is smaller than the main oil passage 802 on the manifold 801, which ensures that the function of the oil pump 700 is not affected by the oil plug 702, so that the oil pump 700 can maintain good use.

[0075] In some embodiments of the present application, the oil pump 700 comprises:

[0076] The oil pump 700 body is arranged on the manifold 801,

[0077] The cover is arranged on the oil pump 700 body, and the oil passage 701 is arranged on the cover.

[0078] The oil pump 700 body has a rotating shaft and a rotor, the cover is arranged on the oil pump 700 body, the oil passage 701 is an internal groove arranged on the cover, and the rotating shaft drives the rotor to rotate, so that the oil flows in the oil passage 701 under pressure.

[0079] In some embodiments of the present application, the manifold 801 comprises:

[0080] The manifold cover 800;

[0081] The manifold body 701, the oil pump 700, the crankshaft 200, the main oil passage 802, and the oil plug 702 are arranged on the manifold body 701, and the manifold cover 800 and the manifold body 701 are connected by a connecting member. The connecting surface of the manifold cover 800 and the manifold body 701 is the manifold surface 601, the center line of the oil pump and the center line of the crankshaft 200 form a first line segment, and the included angle A formed by the first line segment and the perpendicular line of the manifold surface 601 is less than 30°. (The included angle A of the present embodiment is as shown in the figure) Figure 8

[0082] ​In the engine provided by this embodiment, the crankshaft 200 converts the forward and backward motion into rotational motion under the action of the connecting rod to provide power for the secondary shaft output of the engine. The engine is powered by the crankshaft 200, and the oil pump 700 draws the engine oil from the oil suction port at the bottom of the oil pan, pressurizes it, and then sends it to various parts that need lubrication through the inlet passage formed inside the crankshaft 200 box for lubrication. Since the center of the oil pump 700 in this embodiment is located at the rear and lower part of the center of the crankshaft 200, and the angle A formed by the first line segment and the perpendicular to the box surface 601 is less than 30°, the engine oil can be efficiently supplied to the structure of each friction pair without additionally increasing the profile of the engine. At the same time, it is ensured that the water pump can be installed in an ideal position, realizing the miniaturization and lightweight of the engine, thereby effectively solving the technical problem that in the arrangement of the oil pump 700 in the related art, the oil pump 700 is arranged at the front and lower part of the crankshaft 200, which increases the engine profile and makes the engine non-compact.

[0083] The box body 701 and the box cover 800 are connected to form a combined box of the crankshaft 200, which can protect the crankshaft 200 and other components in the combined box. At the same time, the connecting and fitting surface between the box cover 800 and the box body 701 is the combined box surface 601.

[0084] The box cover 800 and the box body 701 can be connected by multiple connecting parts to form a closed box 801. The connecting parts are preferably bolts. By providing threaded holes on the box cover 800, the bolts pass through the box body 701 and are locked on the threaded holes, so that the box cover 800 and the box body 701 are locked together.

[0085] The oil pump is arranged at the front and lower part of the crankshaft 200, which will increase the engine profile and occupy the space for the water pump arrangement, occupying the position of the water pump. The engine provided in this embodiment is based on this demand. The center of the oil pump 700 in this embodiment is located at the rear and lower part of the center of the crankshaft 200, and the angle A formed by the first line segment and the perpendicular line of the case surface 601 is less than 30°. This arrangement does not lengthen the length of the inlet passage, and there is no need to replace it with a large-sized oil pump 700. It can meet the requirement of transporting engine oil to various lubrication parts for lubrication when the engine is started, thereby reducing friction pair wear, and at the same time making the engine more compact and lighter, thereby promoting the lightweight and compactness of the motorcycle. The position below the front of the crankshaft 200 is reserved for the installation of the water pump, and the front of the crankshaft 200 is the ideal layout position for the engine water pump. It is close to the cylinder cooling water jacket and the radiator, and the cooling water inlet and outlet channels are short, which is conducive to the miniaturization and lightweight of the engine.

[0086] In some embodiments of the present application, the engine further comprises:

[0087] A supporting component, the supporting component is mounted on the box body 701;

[0088] A bearing component is mounted on the supporting component, the crankshaft is mounted on the bearing component, one of the connecting parts connecting the box cover 800 and the box body 701 passes through the supporting component, and the oil pump 700 is adjacent to the connecting part passing through the supporting component.

[0089] The supporting component is installed on the housing 701, and its installation method can be to install it on the housing 701 by welding or bolt connection. The supporting component has a mounting hole, and the outer ring of the bearing component is inserted and installed on the mounting hole. The crankshaft 200 is inserted and installed on the inner ring of the bearing component, so that the crankshaft 200 can rotate relative to the supporting component, and then the housing 701 is covered with the housing cover 800 to realize the closing of the housing; the bearing component can be a roller bearing or a ball bearing; the oil pump 700 is set at a position close to the connecting part passing through the supporting component, which can reasonably utilize the limited space of the engine and effectively improve the compactness and lightweight of the engine.

[0090] In some embodiments of the present application, the oil pump 700 has an oil suction port and an oil discharge port, and the oil suction port and the oil discharge port are respectively located on both sides of the connecting member passing through the supporting component.

[0091] The suction port is communicated with the bottom of the oil pan, and is used to draw the lubricating oil in the oil pan into the oil pump 700 when the oil pump 700 is started, and discharge the lubricating oil from the discharge port to various parts that need lubrication after being pressurized in the oil pump 700; wherein, the suction port and the discharge port are located on both sides of the connecting piece passing through the bearing seat, which can reasonably utilize the space of the engine and avoid the connecting piece, and at the same time can make the suction port close to the oil pan and the discharge port close to the parts that need lubrication.

[0092] In some embodiments of the present application, the engine further comprises:

[0093] The supporting component comprises:

[0094] Right seat, the right seat is mounted on the box body 701;

[0095] The middle seat is installed on the box body 701:

[0096] The bearing component comprises:

[0097] a first bearing, the first bearing being mounted on the right seat, and the right end of the crankshaft 200 being mounted on the first bearing;

[0098] a second bearing, the second bearing being mounted on the intermediate seat, and the intermediate portion of the bearing being mounted on the second bearing;

[0099] The engine further comprises:

[0100] Output shaft, the crankshaft 200 is located in front of the output shaft;

[0101] a countershaft, the countershaft being located above a line connecting the center of the crankshaft 200 and the center of the output shaft; wherein the lines connecting the center of the crankshaft 200, the center of the countershaft, and the center of the output shaft form a triangle, and the line connecting the center of the crankshaft 200 and the center of the output shaft is arranged at a preset angle to a horizontal plane;

[0102] A shift shaft, the shift shaft being located below a line connecting the center of the crankshaft 200 and the center of the output shaft;

[0103] A balance shaft, the balance shaft being arranged in front of the crankshaft 200;

[0104] a water pump, the water pump being disposed in front of the balance shaft, with a line connecting the center of the water pump and the center of the countershaft being located above the crankshaft 200; and

[0105] A filter 805 is connected to the oil pump and the main oil channel for filtering the engine oil;

[0106] The center line of the filter 805 is located between the right seat and the middle seat, and is arranged below the water pump.

[0107] The supporting component may include at least a right seat and a middle seat, and may also include a left seat, so that the crankshaft 200 can be stably rotatably installed in the box 801, so that when the connecting rod moves back and forth, it drives the crankshaft 200, and the crankshaft 200 can stably convert the power of the back and forth movement into rotational power.

[0108] The right seat and the middle seat are both mounted on the housing 701 by bolts, the outer ring of the first bearing is mounted on the right seat, and the right end of the crankshaft 200 is inserted and mounted on the inner ring of the first bearing; the outer ring of the second bearing is mounted on the middle seat, and the middle end of the crankshaft 200 is inserted and mounted on the inner ring of the second bearing; the engine oil extracted by the oil pump 700 is filtered in the filter 805 and then discharged into each position requiring lubrication through the discharge port, thereby achieving a lubrication effect. The filter 805 is arranged between the right seat and the middle seat, which can reasonably utilize the empty space between the right seat and the middle seat, and can effectively improve the compactness of the engine and reasonably occupy the space of the engine.

[0109] In some embodiments of the present application, the engine further comprises:

[0110] A balance shaft 500 is arranged in front of the crankshaft 200.

[0111] Since no other mechanism can be arranged in front of the crankshaft 200, the arrangement of the balance shaft 500 in front of the crankshaft 200 has no effect on the overall size of the engine, and the compactness of the engine can be further improved.

[0112] The crankshaft 200 is connected to the balance shaft 500 by a gear and drives the balance shaft 500, which is used to reduce the vibration of the power machine.

[0113] In some embodiments of the present application, the engine further comprises:

[0114] A water pump 600 is arranged in front of the balance shaft 500, and the line connecting the center of the water pump 600 and the center of the countershaft 300 is above the crankshaft 200.

[0115] The water pump 600 is used to drive the coolant to cool the engine; the water pump 600 is arranged in front of the balance shaft 500, which advantageously shortens the total length of the cooling liquid pipeline design, can directly cool the engine, saves the material of the pipeline, reduces the pipeline while realizing compactness, and improves the water cooling performance and emission of the engine.

[0116] In some embodiments of the present application, the engine further comprises:

[0117] A filter 805 is connected with the oil pump 700 and used to filter the oil.

[0118] The filter 805 is located between the right seat and the middle seat and arranged below the water pump.

[0119] The oil extracted by the oil pump 700 is filtered by the filter 805 and then discharged through the discharge port to each position that needs to be lubricated, thereby realizing the lubrication effect. The filter 805 is arranged between the right seat and the middle seat and below the water pump, which can reasonably utilize the space between the right seat and the middle seat, effectively improve the compactness of the engine, and reasonably utilize the space of the engine.

[0120] The center of the oil pump 700 is located below and behind the crankshaft 200.

[0121] The oil pump 700 is closest to the filter 805 and the oil supply point (crankshaft 200 and balance shaft 500), and the required delivery pipeline is short, which can make the engine more compact and improve the lubrication effect of the crankshaft 200 and the balance shaft 500 in the engine.

[0122] The oil pump 700 is arranged at the rear and lower part of the crankshaft 200. Since the countershaft 300 is located above the line connecting the center of the crankshaft 200 and the center of the output shaft 100, the oil pump 700 will not hinder the arrangement of the primary gear on the countershaft 300, and thus will not increase the width of the engine, thereby achieving a compact engine.

[0123] The crankshaft 200 drives the blades of the oil pump 700 , so that the crankshaft 200 can drive the oil pump 700 to work.

[0124] In some embodiments of the present application, the engine comprises:

[0125] A first gear 101, wherein the first gear 101 is mounted on the crankshaft 200;

[0126] a second gear 201 , the second gear 201 meshing with the first gear 101 , and the second gear 201 is mounted on the balance shaft 500 ;

[0127] a third gear 301 , the third gear 301 being meshed with the first gear 101 and being mounted on the countershaft 300 ;

[0128] The crankshaft 200 drives the balance shaft 500 through the first gear 101 and the second gear 201 , and the crankshaft 200 drives the countershaft 300 through the first gear 101 and the third gear 301 .

[0129] The power of the crankshaft 200 drives the countershaft 300 via the first gear 101 and the third gear 301, and the countershaft 300 transmits the power to the engine output shaft 100 to drive the vehicle. In the transmission system of this embodiment, the gear specifically used for transmission with the balance shaft 500 is eliminated from the crankshaft 200. Instead, power is transmitted to the balance shaft 500 via the first gear 101 through the second gear 201 and to the countershaft 300 via the third gear 301. This makes the engine more compact in width and can be retracted inward from the left side of the engine, reducing the space occupied by the engine in width and improving the compactness and lightweight of the engine. On the one hand, it can provide a better driving experience, and on the other hand, it achieves lightweighting, which is beneficial to the vehicle's operability, power, economy, and emission performance. This effectively solves the technical problem of the transmission system in the related art, in which the gear set connecting the crankshaft 200 and the balance shaft 500 is located on one side of the engine, while the other gear set connecting the crankshaft 200 and the countershaft 300 is located on the other side of the engine, thereby increasing the overall width of the engine and reducing its compactness.

[0130] The first gear 101 is mounted on the crankshaft 200 by welding or spline connection, the second gear 201 is mounted on the balance shaft 500 by welding or spline connection, and the third gear 301 is mounted on the countershaft 300 by welding or spline connection.

[0131] The crank-connecting rod mechanism converts the reciprocating motion of the piston into rotational motion, and outputs rotational power through the crankshaft 200, wherein the first gear 101, the second gear 201 and the third gear 301 are coplanar to form a first-layer transmission pair, which are all located on the right side of the engine, that is, on the right side of the crankshaft 200, the countershaft 300 and the balance shaft 500, wherein a clutch is arranged in the middle and left side of the countershaft 300. By arranging the transmission of the first gear 101, the second gear 201 and the third gear 301 on the right side of the clutch, there is no need to configure additional space for the clutch due to the need to assemble the gear pair, thereby effectively minimizing the height of the clutch side, further improving the compactness and lightweight of the engine.

[0132] The first sprocket 102 is mounted on the crankshaft 200 by welding or spline connection; the first sprocket 102 is driven to rotate by the crankshaft 200, and the second sprocket is mounted on the camshaft by welding or spline connection, and the first sprocket 102 and the second sprocket are driven by a chain, wherein the first sprocket 102 is arranged at the position of the first gear 101, and the chain cavity is slightly outside, but does not affect the human-machine interface, and can be set at the upper right side of the secondary shaft 300, which can effectively improve the compactness of the engine.

[0133] The fourth gear 202 is mounted on the balancing shaft 500 by welding or spline connection, and rotates with the balancing shaft 500; the fifth gear 401 is mounted on the rotating shaft of the water pump 600 by welding or spline connection, and is used to drive the impeller of the water pump 600 to rotate. The fourth gear 202 is located on the right side of the second gear 201, and the balancing shaft 500 is placed at the front of the engine. The water pump 600 is driven to work by driving the fifth gear 401 through the fourth gear 202 arranged at the upper right end of the balancing shaft 500.

[0134] The first sprocket 102, the fourth gear 202 and the fifth gear 401 are all located within a preset range, that is, the first sprocket 102, the fourth gear 202 and the fifth gear 401 do not interfere with each other in height, and can be arranged within the preset range so that the first sprocket 102, the fourth gear 202 and the fifth gear 401 form a second layer, wherein the second layer is adjacent to the above-mentioned first layer.

[0135] The sixth gear 103 is mounted on the crankshaft 200 by welding or spline connection, and rotates with the crankshaft 200. The seventh gear 501 is mounted on the rotating shaft of the oil pump by welding or spline connection, and is used to drive the rotating shaft of the oil pump to drive the rotation of the oil pump, thereby driving the oil pump to work. The seventh gear 501 is mounted on the outermost side of the crankshaft 200 and is located inside the skirt of the oil pump, so as not to increase the height of the engine and to more reasonably configure the positions of the oil pump and the sixth gear 103 and the seventh gear 501 that drive the oil pump. Since there is no need to arrange the oil pump 700 and the water pump 600 behind the crankshaft 200, the distance from the crankshaft 200 to the secondary shaft 300 is shortened, and the front-to-back direction of the engine is made more compact. The sixth gear 103 and the seventh gear 501 form the third layer.

[0136] Among them, the first gear 101, the first sprocket 102 and the sixth gear 103 are arranged from left to right and are all located near one end on the right side of the crankshaft 200. Under the premise of the layered arrangement of the first, second and third layers, the internal layout of the engine is reasonable, and each gear is within the clutch height profile, without the need to adjust the engine height.

[0137] The third gear 301 and the fifth gear 401 are both located above the line connecting the center of the crankshaft 200 and the center of the balance shaft 500, and the line connecting the center of the third gear 301, the center of the fifth gear 401 and the center of the seventh gear 501 is arranged in an inverted triangle.

[0138] The above arrangement can further ensure that there is reorganization space in the lower right side of the engine, which is conducive to the arrangement of brake and pedal space, making it easier for operators to operate.

[0139] The transmission system of this embodiment can achieve compactness in the left and right directions and the front and rear directions of the engine; has good adaptability to various types of vehicle layouts; the left and right symmetry of the engine is also convenient for the layout of the vehicle; the engine is lightweight, which is beneficial to the vehicle's operability, power, economy and emission performance; and the engine adopts ordinary technology or structure, which is low in cost.

[0140] In some embodiments of the present application, the engine further comprises:

[0141] The pressure regulating valve, the main oil channel includes a first oil channel 803 and a second oil channel 804 that are connected to each other. The first oil channel 803 runs through the left and right sides of the combining box. One end of the second oil channel 804 is connected to the filter 805, and the other end is connected to the first oil channel 803. The pressure regulating valve is arranged at the intersection of the first oil channel 803 and the second oil channel 804, and a groove is provided on the inner wall of the intersection of the first oil channel 803 and the second oil channel 804.

[0142] At the intersection of the first oil passage 803 and the second oil passage 804, the taper angle left by drilling is supplemented to form the groove, so that the first oil passage 803 and the second oil passage 804 are connected more smoothly, the turbulence of the engine oil is reduced, the oil pressure and flow rate temperature in the main oil passage are guaranteed, and the mechanical loss is reduced;

[0143] On the one hand, the pressure regulating valve is arranged at the intersection of the first oil channel 803 and the second oil channel 804, which plays the role of stabilizing pressure and preventing oil blockage, and makes the design structure of the engine simpler and lowers the cost. On the other hand, the pressure regulating valve is far away from the filter 805, which makes the oil path of the pressure stabilization section longer, making the oil pressure before the oil enters the oil filter more stable, which helps to reduce the damage of the oil filter paper filter screen caused by oil pressure fluctuations.

[0144] The present invention also provides a motorcycle, comprising the engine as described above;

[0145] The motorcycle adopts the engine as described above, which can effectively solve the technical problem in the related art that the lubrication passage flowing to the crankshaft is arranged in front of the oil pump 700, so that the end face of the lubrication passage is higher than the sealing surface of the oil pump 700, resulting in a deeper processing depth and increased difficulty in drilling.

[0146] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An engine, characterized in that: The engine comprises: A manifold, the manifold having main oil passages running through the left and right sides; An oil blockage, wherein the oil blockage is sealed at an end of the main oil passage; a crankshaft rotatably mounted on the housing; and An oil pump is mounted on the crankcase and is located at a lower rear position of the crankshaft, one end of the main oil passage is disposed in the oil pump, and the oil pump covers and seals the oil plug on the end; The main oil passage is located at the rear lower portion of the crankshaft; The oil pump has an oil passage, one end of the main oil passage located in the oil pump is connected to the oil passage, and an oil plug for blocking the end is located on the oil passage; The cross-sectional area of ​​the oil passage is smaller than the cross-sectional area of ​​the main oil passage; The oil pump comprises: The oil pump body is mounted on the box. A cover body is provided on the oil pump body, and the oil passage is provided on the cover body.

2. The engine according to claim 1, characterized in that The box assembly includes: box lid; A box body, the oil pump, the crankshaft, the main oil channel and the oil plug are all arranged on the box body, and the box cover and the box body are connected by a connecting piece; The connecting surface between the case cover and the case body is a case joining surface, a line connecting the center of the oil pump and the center of the crankshaft forms a first line segment, and an angle A formed by the first line segment and a perpendicular line to the case joining surface is less than 30°.

3. The engine according to claim 2, characterized in that The engine further comprises: A supporting component, wherein the supporting component is mounted on the box body; A bearing component is mounted on the supporting component, the crankshaft is mounted on the bearing component, one of the connecting pieces connecting the case cover and the case body passes through the supporting component, and the oil pump is adjacent to the connecting piece passing through the supporting component.

4. The engine according to claim 3, characterized in that The oil pump has an oil suction port and an oil discharge port, and the oil suction port and the oil discharge port are respectively arranged on both sides of the connecting member passing through the supporting component.

5. The engine according to claim 3, characterized in that The supporting component comprises: a right seat, the right seat being mounted on the box body; An intermediate seat is mounted on the box body: The bearing component comprises: a first bearing, the first bearing being mounted on the right seat, and the right end of the crankshaft being mounted on the first bearing; a second bearing, the second bearing being mounted on the intermediate seat, and the intermediate portion of the bearing being mounted on the second bearing; The engine further comprises: an output shaft, the crankshaft being located in front of the output shaft; a countershaft, the countershaft being located above a line connecting the center of the crankshaft and the center of the output shaft; wherein lines connecting the center of the crankshaft, the center of the countershaft, and the center of the output shaft form a triangle, and the line connecting the center of the crankshaft and the center of the output shaft is arranged at a preset angle to a horizontal plane; a shift shaft, the shift shaft being located below a line connecting the center of the crankshaft and the center of the output shaft; a balance shaft, the balance shaft being arranged in front of the crankshaft; a water pump, the water pump being disposed in front of the balance shaft, with a line connecting a center of the water pump and a center of the countershaft being located above the crankshaft; and a filter, the filter being connected to the oil pump and the main oil channel and being used for filtering the engine oil; Wherein, the center line of the filter is located between the right seat and the middle seat, and is arranged below the water pump.

6. The engine according to claim 5, characterized in that The engine further comprises: a first gear, the first gear being mounted on the crankshaft; a second gear, the second gear meshing with the first gear and mounted on the balance shaft; a third gear, the third gear meshing with the first gear and mounted on the countershaft; The crankshaft drives the balance shaft via the first gear and the second gear, and the crankshaft drives the countershaft via the first gear and the third gear; a first sprocket mounted on the crankshaft; a second sprocket connected to the first sprocket via a chain and configured to be mounted on the camshaft; a fourth gear, mounted on the balance shaft and located to the right of the second gear; a fifth gear, meshing with the fourth gear, mounted on the water pump, and configured for the balance shaft to drive the water pump via the fourth gear; the balance shaft being positioned at the front of the engine; a sixth gear, mounted on the crankshaft; a seventh gear meshing with the sixth gear and mounted on the oil pump; and The crankshaft drives the oil pump through the sixth gear and the seventh gear; the first sprocket is located between the first gear and the sixth gear, and all three are located on the right side of the crankshaft; The third gear and the fifth gear are both located above the line connecting the center of the crankshaft and the center of the balance shaft, and the line connecting the center of the third gear, the center of the fifth gear and the center of the seventh gear is arranged in an inverted triangle.

7. The engine according to claim 5, characterized in that The engine further comprises: The pressure regulating valve, the main oil channel includes a first oil channel and a second oil channel that are connected to each other, the first oil channel runs through the left and right sides of the combining box, one end of the second oil channel is connected to the filter, and the other end is connected to the first oil channel, the pressure regulating valve is arranged at the intersection of the first oil channel and the second oil channel, and a groove is provided on the inner wall of the intersection of the first oil channel and the second oil channel.

8. A motorcycle, characterized in that: The motorcycle comprises: An engine as claimed in any one of claims 1 to 7.

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