Engine and motorcycle

Abstract

The embodiment of the utility model provides an engine and a motorcycle, the engine comprises a cylinder body, the cylinder body is provided with a cooling channel, and the cylinder body is provided with a cooling water inlet; the cylinder cover sealing gasket is used for connecting a cooling channel of the cylinder body and a cooling channel of the cylinder cover, and the cylinder cover sealing gasket is provided with a cooling through hole; the cylinder cover is provided with a cooling channel and a cooling water outlet pipe, the cooling water outlet pipe is the highest point of the cooling channel, and the cooling water outlet pipe is communicated with the radiator; the left side cover is provided with a cooling channel, and a water pump rotor, a water seal, a bearing and a water pump driving gear are arranged in the left side cover; the water pump cover communicates with the cooling channel, and the water pump cover is located on the left side of the left side cover; the radiator is located on the front portion of the axis of the cylinder body, and the radiator is communicated with the water pump cover; the thermostat is located on the rear portion of the axis of the cylinder body, and the thermostat is communicated with the radiator and the cooling channel. The water pump is located on the left front side of the cylinder body, and the thermostat is located on the rear side of the cylinder body. And a water pipe for cooling water to the water inlet of the cylinder body is reduced, so that the risk of water leakage is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle engines, in particular to an engine and a motorcycle. Background Art

[0002] Motorcycle engines are usually divided into two categories: straddle bike engines and scooter engines. Motorcycles are widely used in people's daily travel because they are light and flexible, fast and have low energy consumption.

[0003] At present, as the demand for entertainment functions of motorcycle products becomes a trend, the demand for lightweight and compact engines is becoming more and more obvious; the coolant of the motorcycle engine is sucked in by a water pump, then pressurized by the water pump, and introduced into each channel. Under the action of the water pump, it is sent to the cylinder block and the cylinder head to cool the cylinder block and the cylinder head. In the related technology, the water pump is arranged at the right rear lower side of the engine, and the oil pump is driven by the secondary shaft. The water pump and the oil pump are coaxially arranged, resulting in a lower position of the water pump. The cooling pipeline connected to the water pump needs to be connected along the entire periphery of the engine, resulting in an increase in the length of the cooling passage and an increase in the time and fluid resistance for the coolant to reach the required part, thereby increasing mechanical losses. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a motorcycle, which is used to solve the technical problems existing in the related art that the water pump is arranged at the left and right rear lower part of the engine, the oil pump is driven by the main shaft, and the water pump is coaxially arranged with the oil pump, resulting in a lower position of the water pump, and the cooling pipeline connected to the water pump needs to be connected along the entire periphery of the engine, resulting in an increase in the length of the cooling passage and an increase in the time and fluid resistance for the coolant to reach the required part, thereby increasing mechanical losses.

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

[0006] An embodiment of the utility model provides an engine, the engine comprising:

[0007] A cylinder body, wherein the cylinder body has a cooling channel and a cooling water inlet;

[0008] A cylinder head gasket, the cylinder head gasket is used to connect the cooling passages of the cylinder block and the cylinder head, and the cylinder head gasket is provided with cooling through holes;

[0009] A cylinder head, wherein the cylinder head has a cooling channel, the cylinder head is provided with a cooling water outlet pipe, the outlet pipe is the highest point of the cooling channel, and the cooling water outlet pipe is communicated with a radiator;

[0010] A left cover, wherein the left cover is provided with a cooling channel, and a water pump rotor, a water seal, a bearing and a water pump driving gear are arranged inside the left cover;

[0011] A water pump cover, the water pump cover is communicated with the cooling channel, the water pump cover is located on the left side of the left cover, and the water pump cover is provided with a cooling water inlet;

[0012] a water pump, the water pump being in communication with the cooling channel and being located in front of the axis of the cylinder body;

[0013] a radiator, the radiator being located in front of the axis of the cylinder body and being in communication with the water pump;

[0014] and a thermostat, the thermostat being located in front of the axis of the cylinder body, the thermostat being connected to the radiator and the cooling channel;

[0015] The water pump is located on the left side of the cylinder body, and the thermostat is located on the rear side of the cylinder body. In some embodiments of the present application, the engine further includes:

[0016] The left side cover is designed on the left side of the cylinder body, and the water pump is designed inside the left side cover.

[0017] In some embodiments of the present application, the engine further comprises:

[0018] A circulation pipeline, one end of which is connected to a radiator, and the other end of which is connected to an inlet of the cooling channel, and the circulation pipeline is located on the left side of the axis of the cylinder head.

[0019] The circulation pipeline connects the radiator-water pump-left cover channel-cylinder body-cylinder head-thermostat-radiator through a cooling water pipe to form a closed water circuit.

[0020] In some embodiments of the present application, on the vertical projection plane, the circulation pipeline crosses the left and right side surfaces of the cylinder body to form a mouth-shaped closed-loop water circuit.

[0021] In some embodiments of the present application, the engine further comprises:

[0022] A water inlet pipe, a first end of which is connected to the thermostat, and a second end of which is connected to the radiator, wherein the water inlet pipe is located at the front of the cylinder body.

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

[0024] a water outlet pipe, the water outlet pipe connecting the radiator and the water pump cover, wherein the water outlet pipe is located at the left front part of the cylinder body;

[0025] In some embodiments of the present application, it also includes:

[0026] A connecting pipe, wherein a first end of the connecting pipe is connected to a first end of the cylinder head water outlet pipe, a second end of the connecting pipe is connected to a second interface of the thermostat, and the connecting pipe is located at an upper portion of the cylinder body.

[0027] In some embodiments of the present application, the engine further comprises:

[0028] A box body, the box body is connected to the cylinder body, and the water pump is located at the left part of the box body;

[0029] A clutch, wherein the clutch is mounted in the housing;

[0030] A crankshaft, wherein the crankshaft is disposed in the housing;

[0031] A water pump, the water pump is arranged on the left side of the engine, and the water pump is located on the left side of the box;

[0032] and a clutch, the clutch being arranged on the right side of the engine;

[0033] Wherein, a line connecting the center of the water pump and the center of the clutch is located above the central axis of the crankshaft.

[0034] In some embodiments of the present application, the distance between the center of the water pump and the center of the crankshaft is

[0035] The difference between the center of the device and the center of the crankshaft is within a preset range;

[0036] In some embodiments of the present application, the engine further comprises:

[0037] A cylinder body, the cylinder body is connected to the box body, the left cover connects the box body and the cylinder body, the water pump is arranged on the left side of the left cover, and the water pump is designed on the front side of the cylinder body axis;

[0038] A balancing shaft, the balancing shaft being rotatably mounted in the box;

[0039] A main shaft, the main shaft is rotatable and is disposed in the box;

[0040] The crankshaft is connected to the balance shaft and the main shaft through a gear assembly.

[0041] and said main shaft drive;

[0042] Wherein, the balance shaft is connected to the water pump shaft through a gear assembly to drive the water pump;

[0043] Wherein, the water pump shaft and the crankshaft are arranged front and back, and the auxiliary shaft is arranged above the center line connecting the crankshaft and the water pump shaft;

[0044] The balance shaft is arranged in front of the crankshaft.

[0045] In some embodiments of the present application, the engine further comprises:

[0046] A water pump body, wherein the water pump body is arranged on the left side of the engine, and the water pump is located on the front side of the cylinder body;

[0047] a water pump shaft, the water pump shaft being mounted on the water pump body and used for driving the impeller on the water pump body to rotate; a first gear being mounted on the water pump shaft;

[0048] A second gear is mounted on the balance shaft, and the second gear is meshed with the first gear;

[0049] A driven gear is also provided on the balance shaft, a driving gear is provided on the crankshaft, the driving gear and the driven gear are meshed with each other, and the second gear and the first gear are located on the left side of the driven gear.

[0050] An embodiment of the present application further provides a motorcycle, the motorcycle comprising:

[0051] Engine as described above.

[0052] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0053] The embodiment of the utility model provides an engine and a motorcycle, the engine comprising: a cylinder body, the cylinder body having a cooling channel, the cylinder body being provided with a cooling water inlet; a cylinder head gasket, the cylinder head gasket being used to connect the cooling channels of the cylinder body and the cylinder head, the cylinder head gasket being provided with a cooling through hole; a cylinder head, the cylinder head having a cooling channel, the cylinder head being provided with a cooling water outlet pipe, the outlet pipe being the highest point of the cooling channel, the cooling water outlet pipe being communicated with a radiator; a left cover, the left cover being provided with a cooling channel, the left cover being provided with a water pump rotor, a water seal, a bearing and a water pump driving gear; a water pump cover, the water The pump cover is connected with the cooling channel, and the water pump cover is located on the left side of the left cover; the radiator is located in front of the axis of the cylinder body, and the radiator is connected with the water pump cover; and the thermostat is located at the rear of the axis of the cylinder body, and the thermostat connects the radiator and the cooling channel; the water pump is located on the left front side of the cylinder body, and the thermostat is located on the rear side of the cylinder body; a water pipe from the cooling water to the water inlet of the cylinder body is reduced, thereby reducing the time and fluid resistance for the coolant to flow from the water pump to the required part of the cylinder body, improving the cooling efficiency of the cylinder body and reducing mechanical losses. The technical problem that the water pump is arranged on the rear side of the cylinder body axis, which increases the total length of the water channel, increases the time and fluid resistance for the coolant to flow from the water pump to the required part of the cylinder body, affects the reduction of cooling efficiency and increases mechanical losses is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the utility model application and the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments and the prior art description. Obviously, the drawings in the following description are only for the present embodiment. For ordinary technicians in this field, other drawings can also be obtained based on the drawings provided in this application without creative work.

[0055] Figure 1 It is a right side view of an engine provided by an embodiment of the utility model;

[0056] Figure 2 It is a left side view of an engine provided by an embodiment of the utility model;

[0057] Figure 3 It is an exploded diagram of an engine provided by an embodiment of the utility model;

[0058] Figure 4 It is a top view of an engine provided by an embodiment of the utility model;

[0059] Figure 5 It is a first structural schematic diagram of an engine provided by an embodiment of the utility model;

[0060] Figure 6 It is a second structural schematic diagram of an engine provided by an embodiment of the utility model;

[0061] Figure 7 This is a schematic diagram of the structure of a driven gear of a balance shaft of an engine provided by an embodiment of the utility model;

[0062] Figure 8 It is a schematic diagram of an integrated cylinder box provided by an embodiment of the utility model.

[0063] Among them: 110, water pump; 111, water pump driven gear; 112, water pump driving gear; 130 left cover; 131 water pump cover; 180, radiator; 181, water inlet pipe; 182, water outlet pipe; 183, connecting pipe; 190, thermostat; 210, cylinder head; 310, cylinder block; 320, box body; 330, clutch; 420, balance shaft; 610, main shaft. DETAILED DESCRIPTION

[0064] The following content will be combined with the drawings in the embodiments of the present application to provide a detailed and comprehensive description of the technical solutions in the embodiments of the present application. It should be noted that the described embodiment is only one embodiment of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present application.

[0065] In the description of the embodiments of the utility model application, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", "center", "horizontal", "vertical", etc. is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of simplifying the description of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, the meaning of multiple is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In the description of the embodiments of the present utility model application, unless otherwise clearly specified or limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. The first feature may be directly connected to the second feature, or they may be indirectly connected through an intermediate medium. In the present application, unless otherwise clearly specified or limited, the first feature being "above" or "below" the second feature may mean that the first feature and the second feature are in direct contact, or they may be in indirect contact through an intermediate medium. Furthermore, the first feature being "on the upper side" of the second feature may mean that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is at a higher level than the second feature. The first feature being "on the lower side" of the second feature may mean that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is at a lower level than the second feature.

[0067] Unless otherwise defined in this embodiment, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the description of this application are only for describing specific implementations and are not intended to limit this application.

[0068] The following is a further detailed description of the specific implementation of the present invention in conjunction with 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.

[0069] like Figure 1-8 As shown, Figure 1 A left side view of an engine provided by an embodiment of the present invention;

[0070] This embodiment provides an engine, which includes:

[0071] A cylinder body 310, wherein the cylinder body 310 has a cooling channel;

[0072] A cylinder head 110, wherein the cylinder head 110 has a cooling channel;

[0073] Box 320;

[0074] A clutch 330, wherein the clutch 330 is installed in the housing 320;

[0075] A crankshaft 410, wherein the crankshaft 410 is installed in the housing 320;

[0076] A balancing shaft 420, wherein the balancing shaft 420 is installed in the box body 320;

[0077] A water pump driving gear 112, wherein the water pump driving gear 112 is installed in the box body 420;

[0078] A main shaft 610, wherein the main shaft 610 is installed in the box body 320;

[0079] left cover 130;

[0080] A water pump cover 131, wherein the water pump cover 131 is mounted on the left cover 130;

[0081] A water pump 110, wherein a water pump driven gear 111 is provided in the water pump 110, the water pump 110 is communicated with the cooling channel, the water pump 110 is located in front of the axis of the cylinder body 310, and the water pump 110 is located on the right side of the axis of the cylinder body 310; the water pump 110 is installed in the left cover 130;

[0082] Water inlet pipe 181;

[0083] Water outlet pipe 182;

[0084] Connecting pipe 183;

[0085] A radiator 180, the radiator 180 is located in front of the axis of the cylinder body 100, and the radiator 180 is connected to the water pump 110 through the water inlet pipe 181;

[0086] and a thermostat 190 , wherein the thermostat 190 is located at the rear side of the axis of the cylinder block 310 , the thermostat 190 is connected to the radiator 180 through the water outlet pipe 182 , and the thermostat 190 is connected to the cylinder head 110 through the connecting pipe 183 .

[0087] In the engine of this embodiment, the water pump 110 and the radiator 180 are both located in front of the axis of the cylinder block 310, so that the distance between the two major performance components, the water pump 110 and the thermostat 190, and the radiator 180 is reduced, which is extremely beneficial to shorten the total length of the external pipeline and the total length of the cooling channel, thereby reducing the time and fluid resistance for the coolant to flow from the water pump 110 to the required part of the cylinder block 310, improving the cooling efficiency of the cylinder block 310 and the cylinder head 110, and reducing mechanical losses. This effectively solves the technical problem in the related art that the total length of the water channel will increase due to the need for each channel to be connected around the periphery of the engine to cool the engine with the coolant passing through the channel, resulting in an increase in the time and fluid resistance for the coolant to flow from the water pump 110 to the required part of the cylinder block 310, affecting the reduction of cooling efficiency and the increase of mechanical losses.

[0088] In this embodiment, the motorcycle is forward in the forward direction; in the top view of the entire engine, due to the same-side distribution design of the water pump and the thermostat, the "external" waterless pipeline crosses the two sides of the engine and forms a "mouth"-shaped closed-loop water path through the connection with the water channel inside the engine.

[0089] The water pump 110 is connected to the coolant storage tank, and the power transmitted by the crankshaft drives the water pump 110 to work, so that the coolant flows out through the water pump 110 under pressure;

[0090] The cooling channel of the cylinder body 310 is built-in, which is mainly formed by the grooves opened inside the cylinder body 310. The coolant pressurized by the water pump 110 flows into the cooling channel of the cylinder body 310 directly through the built-in channel of the left cover, which makes the water pump 110 and the cylinder body 310 closer, thereby reducing the connecting pipe of the water pump 110, improving the transmission efficiency of the coolant, and avoiding the problem that the time and fluid resistance of the coolant to the required part will increase due to the connecting pipe between the water pump 200 and the cooling channel when the engine is started, and the coolant has not been delivered to the part of the engine that needs to be cooled, the cooling effect is not good, and the mechanical loss is increased. In addition, the dedicated connecting pipes directly between the water pump 200 and the cylinder body 310 are reduced, which is conducive to improving the compactness of the engine and the motorcycle. At the same time, due to the reduction in the length of the cooling channel, the total amount of coolant required by the engine is reduced, which is conducive to the lightweight of the whole machine.

[0091] The thermostat 190 is in communication with the cooling channel, and the liquid in the cooling channel is measured at a corresponding temperature by the thermostat 190 before entering the radiator 180;

[0092] The radiator 180 is used to dissipate heat from the coolant and is connected to the thermostat 190 . The coolant enters the radiator 180 to dissipate heat and cool down, and then returns to the water pump 110 for recycling.

[0093] The water pump 110 is located on the left side of the cylinder block 310, and the thermostat 190 is located on the rear side of the cylinder block 310. By arranging the water pump 110 and the thermostat 190 on the same side of the cylinder block 100, the compactness of the engine is improved on the one hand, and the heat dissipation performance of the engine is improved on the other hand.

[0094] In some embodiments of the present application, the engine further comprises:

[0095] The piston is disposed in the cylinder body 310 , and the water pump 110 is located at the left front part of the axis of the piston.

[0096] The piston is movably mounted in the cylinder body 310, and the water pump 110 is located in front of the axis of the piston, which can further reduce the distance between the two major performance components, the water pump 110 and the thermostat 190, and the radiator 180, which greatly shortens the total length of the external pipeline and greatly shortens the total length of the cooling channel.

[0097] In some embodiments of the present application, the engine further comprises:

[0098] A circulation pipeline 184 , one end of which is connected to the radiator 300 , and the other end of which is connected to the thermostat 190 . The circulation pipeline 184 is located on the left side of the axis of the cylinder block 100 .

[0099] The circulation line 184 is located on the left side of the axis of the cylinder body 310, which makes the engine more compact, improves the convenience of assembly and maintenance, and can effectively improve the compactness and lightness of the engine.

[0100] In some embodiments of the present application, on a vertical projection plane, the circulation pipeline 184 crosses the left side of the cylinder body 310 to form a closed-loop water circuit.

[0101] Among them, the closed-loop water circuit is in a shape similar to a "mouth"; the circulation pipeline 184 crosses the front and rear sides of the engine, which reduces the hidden dangers of pipeline interference and wear of the engine while further highlighting the mechanical beauty of the side of the engine.

[0102] In some embodiments of the present application, the engine further comprises:

[0103] A water inlet pipe 181 , wherein a first end of the water inlet pipe 181 is connected to the radiator 180 , and a second end of the water inlet pipe 181 is connected to the water pump cover 131 , wherein the water inlet pipe 181 is located at the front of the cylinder body 310 .

[0104] The water inlet pipe 181 is used to connect the water pump cover 131 and the radiator 180, and transport the coolant cooled in the radiator 180 to the water pump. The water inlet pipe 181 is arranged at the front part of the cylinder body 310, which can facilitate the disassembly and assembly of the water inlet pipe 181, thereby improving the convenience of assembly and maintenance, and at the same time can reasonably utilize the space of the engine, thereby improving the compactness of the engine.

[0105] In some embodiments of the present application, the engine further comprises:

[0106] A water outlet pipe 182 is connected to the radiator 180 and the thermostat 190 , wherein the water outlet pipe 182 is located at the right part of the cylinder body 310 .

[0107] The water outlet pipe 182 connects the radiator 180 and the thermostat 190, and can return the hot cooling water from the thermostat 190 to the radiator 180 for recycling. At the same time, the water outlet pipe 182 is located at the rear right part of the cylinder body 310, which is convenient for replacing or repairing the water outlet pipe 182, and also convenient for repairing the radiator 180 or the water pump 110. It is convenient and quick, and at the same time, it can make reasonable use of the space of the engine, thereby improving the compactness of the engine.

[0108] In some embodiments of the present application, the engine further comprises:

[0109] A box body 320, wherein the box body 320 is connected to the cylinder body 310, and the water pump 110 is located on the left side of the box body 900;

[0110] A clutch, the clutch is installed in the box 320;

[0111] A crankshaft, the crankshaft is installed in the box 320;

[0112] and a water pump 110, wherein the water pump 110 and the clutch 330 are disposed on both sides of the engine, and the water pump 110 is located on the left side of the box 320;

[0113] The line connecting the center of the water pump 110 and the center of the clutch 330 is located above the central axis of the crankshaft.

[0114] In the engine of this embodiment, the water pump 110 is located at the left front part of the box body 320, so that the water pump 110 is high from the ground, reducing the probability of sand and stone impact, and can effectively avoid the problem that the water pump 110 is located on the windward side of riding and is at a low height from the ground, and is easily hit by sand and stones during riding, thereby damaging the water pump 110; at the same time, the water pump 110 is directly connected to the cooling water jacket of the cylinder body 310 through the internal water channel of the left cover, which greatly reduces the length of the water channel, is conducive to the compactness and lightweight of the engine, thereby avoiding the low position of the water pump 110 and the air The distance between the cylinder cooling water jacket is far, the cooling water inlet and outlet channels are short, the cooling efficiency is low and it is not conducive to the compact optimization of the whole machine; the position of the water pump 110 can be directly connected to the cylinder through the internal channel, and its position is high, so that the cooling passage connected to the water pump 110 is short, and the coolant can directly enter the periphery of the engine for cooling under the pressure of the water pump 110, effectively reducing the time required for the coolant to circulate in the cooling passage to each cooling area, and reducing the fluid resistance of the coolant and the mechanical loss of the engine. Wherein, the box body is a crankcase.

[0115] In the engine of this embodiment, the water pump 110 is located on the left side of the engine, the clutch 330 and the water pump 110 are located on the other side of the engine, and the line connecting the center of the water pump 110 and the center of the clutch 330 is located above the central axis of the crankshaft 410, so that the water pump 110 is high from the ground, reducing the probability of sand and stone impact, and can effectively avoid the problem that the water pump 200 is on the windward side of riding and is at a low height from the ground, and is easily hit by sand and stones during riding, thereby damaging the water pump 110; at the same time, the position of the water pump 110 can be directly connected to the cylinder body through an internal channel, reducing the length of the water channel, which is conducive to the compactness and lightweight of the engine, thereby avoiding the problem that the water pump 110 is located at a low position, far away from the cylinder cooling water jacket, short cooling water inlet and outlet channels, low cooling efficiency and is not conducive to compact optimization of the whole machine; The water pump 110 is located so that it can be directly connected to the cylinder block 310. Its position is relatively high, so that the cooling passage connected to the water pump 110 is relatively short. The coolant can directly enter the periphery of the engine for cooling under the pressure of the water pump 110, effectively reducing the time required for the coolant to circulate in the cooling passage to each cooling area, and reducing the fluid resistance of the coolant and the mechanical loss of the engine, thereby effectively solving the technical problem that the water pump 110 is arranged at the left rear lower part of the engine, the oil pump is driven by the main shaft 610, and the water pump 110 is coaxially arranged with the oil pump 110, resulting in a lower position of the water pump 110. The cooling pipeline connected to the water pump 110 needs to be connected along the entire periphery of the engine, resulting in an increase in the length of the cooling passage, an increase in the time and fluid resistance for the coolant to reach the required position, and an increase in mechanical loss.

[0116] In addition, the height of the water pump 110 is relatively high, so that the length of the cooling passage is relatively short, which is beneficial to improving the compactness of the engine and the motorcycle. At the same time, due to the reduction in the length of the cooling passage, the total amount of coolant required by the engine is reduced, which is beneficial to the lightweight of the entire machine.

[0117] In some embodiments of the present application, the difference between the distance between the center of the water pump 110 and the center of the crankshaft 410 and the distance between the center of the clutch 330 and the center of the crankshaft 410 is within a preset range, and the preset range is: Figure 5 As shown in , the distance between the center of the clutch 330 and the center of the crankshaft 410 is L, and the distance between the center of the water pump 200 and the center of the crankshaft 201 is M.

[0118] The distance between the center of the water pump 110 and the center of the crankshaft 410 is equivalent to the distance between the center of the clutch 330 and the center of the crankshaft 410, that is, the two distances are very close. The preset range is usually, and the threshold range represents the allowable error and the phase difference range that can be controlled to a certain extent, which is beneficial to the balance of the center of gravity of the whole machine and reduces the vibration of the engine.

[0119] In some embodiments of the present application, the engine further comprises:

[0120] The cylinder body 310 is connected to the box body 320, the water pump 110 is connected to the box body 320 and the cylinder body 310, the water pump 110 is located on the left side of the axis of the cylinder body, and the water pump 110 is close to the outer surface of the cylinder body. The cylinder body 310 is provided with a piston rod, which is connected to the crankshaft 410 through a connecting rod, and the connecting rod is driven by the piston rod, and the connecting rod drives the crankshaft 410 to rotate, so as to convert the power in the cylinder body into the rotational kinetic energy on the crankshaft 410; wherein, during the operation of the cylinder body 310, a large amount of heat energy will be generated in the process of the operation of the cylinder body 310, and at this time, the coolant needs to be circulated in the cooling channel to take away the heat, thereby reducing the temperature of the cylinder body 310 and avoiding accidents caused by overheating of the cylinder body 310, wherein the water pump 110 is located on the left side of the axis of the cylinder body, and the water pump 110 is close to the outer surface of the cylinder body, which can effectively shorten the total length of the coolant passage, thereby improving the heat exchange efficiency and the cost of production.

[0121] In some embodiments of the present application, the engine further comprises:

[0122] A balancing shaft 420, wherein the balancing shaft 420 is rotatably mounted in the box body 320;

[0123] A main shaft 610, wherein the secondary shaft 610 is rotatably mounted in the box body 320;

[0124] The crankshaft 410 is connected to the balance shaft 420 and the secondary shaft 610 respectively through a gear assembly to transmit power to the balance shaft 420 and the secondary shaft 610 .

[0125] The balance shaft 420 is rotatably mounted in the housing 320 via a bearing, a first gear is mounted on the crankshaft 410, a second gear is mounted on the balance shaft 420, and the first gear and the second gear are meshed with each other;

[0126] The countershaft 610 is rotatably mounted in the housing 320 via a bearing, and a third gear is mounted on the countershaft 610, and the third gear meshes with the first gear. The rotation of the crankshaft 410 can be transmitted to the second gear and the third gear respectively through the first gear, thereby driving the balance shaft 420 and the countershaft 610 to rotate. Through this transmission method, the space in the width direction of the engine can be effectively saved. By meshing the third gear and the second gear respectively through the first gear, there is no need to add additional gears connected to the second gear or the third gear on the crankshaft 410, which can effectively improve the compactness of the engine.

[0127] In some embodiments of the present application, the engine further comprises:

[0128] An output shaft, wherein the output shaft is installed in the housing 320, and the crankshaft 420, the countershaft 610 and the output shaft are arranged in a triangle;

[0129] The crankshaft 420 and the output shaft are arranged front and back, and the secondary shaft 610 is arranged above the center line connecting the crankshaft 420 and the output shaft.

[0130] The crankshaft 420 and the output shaft are arranged front and back, and the countershaft 610 is arranged above the center line connecting the crankshaft 420 and the output shaft, which effectively shortens the distance between the crankshaft 420 and the output shaft, so that the width space used for the engine on the same straight line can be reduced, making the engine more compact and lighter, thereby promoting the motorcycle to achieve lightweight and compactness;

[0131] In some embodiments of the present application, the balance shaft 420 is disposed in front of the crankshaft 410 .

[0132] Since other mechanisms cannot be arranged in front of the crankshaft 410, arranging the balance shaft 420 in front of the crankshaft 410 has no effect on the overall size of the engine and can further improve the compactness of the engine.

[0133] The water pump driving gear 112 is mounted on the left end of the balance shaft 420;

[0134] A balance shaft driven gear set 430 (431, 432), mounted on the right end of the balance shaft 420;

[0135] The water pump driven gear 111 is mounted on the shaft of the water pump 110;

[0136] The water pump driving gear 112 and the water pump driven gear 111 are meshed with each other;

[0137] The balance shaft 420 rotates under the drive of the crankshaft 410, driving the balance shaft driven gear set 430, causing the balance shaft 420 to rotate, driving the water pump driving gear 112 installed on the balance shaft 420, and the water pump driving gear 112 transmits power to the water pump 110 shaft by meshing with the water pump driven gear 111. The meshing ratio between the first gear and the second gear can be adjusted. The speed ratio of the water pump 110 and the balance shaft 420 can be adjusted according to different meshing ratios between the first gear and the second gear, and is not limited to the speed ratio being fixed to 1. The meshing ratio of the first gear and the second gear can be set according to needs, thereby setting the speed ratio between the water pump 110 and the balance shaft 420. At the same time, the water pump 110 is not coaxial with the balance shaft 420, which can be flexibly arranged, can effectively improve the compactness of the engine, and reasonably layout the water pump 110.

[0138] The balance shaft driven gear set 430, such as Figure 7, including a balancing shaft driven sub-gear 431, a balancing shaft driven main gear 432, a balancing shaft gear frame 433, a balancing shaft main gear buffer spring 434 and a balancing shaft sub-gear offset spring 435; the balancing shaft driven gear set 430 is characterized in that: one side end face of the balancing shaft driven main gear 432 is in contact with one side end face of the balancing shaft driven sub-gear 431, a balancing shaft sub-gear offset spring 435 is provided between the two gears, and a balancing shaft driven main gear 432 and a balancing shaft gear frame 433 are provided. A balance shaft main gear buffer spring 434 is fixed between them; the balance shaft driven main gear 432 is provided with an outward-extending claw that extends into the balance shaft driven sub-gear 431 and fits with the balance shaft sub-gear misalignment spring 435 and the balance shaft main gear buffer spring 434; the balance shaft driven sub-gear 431 is provided with an anti-backlash spring groove that simultaneously accommodates the anti-backlash balance shaft sub-gear misalignment spring 435, the balance shaft main gear buffer spring 434, and the outward-extending claw on the balance shaft driven main gear 432; the balance shaft driven main gear The buffer spring groove on 432 is fitted with the two end surfaces of the balance shaft main gear buffer spring 434. Half of the cross section of the balance shaft main gear buffer spring 434 is fixed on the balance shaft main gear buffer spring 434 and is symmetrically distributed in groups in the circumferential direction of the gear. The balance shaft gear skeleton 433 has a buffer spring clamping groove to fix the other half of the cross section of the balance shaft main gear buffer spring 434 in the clamping groove. In the free state (non-working state), the tooth shape of the balance shaft driven sub-gear 431 is relative to the tooth shape of the balance shaft driven sub-gear 431. The tooth profile is staggered by α degree (the α value is designed to be ≈20-30 times the tooth side clearance), and the direction of the staggered angle is to make the tooth surface of the balance shaft driven sub-gear 431 close to the non-meshing tooth surface of the crankshaft driving tooth 411; the balance shaft driven sub-gear 431 is provided with a buffer spring avoidance groove, and when the gear mechanism switches from a free state (non-working state) to an installed state (the tooth profile of the balance shaft driven main gear 432 coincides with that of the balance shaft driven sub-gear 431), the buffer spring avoidance groove will not touch or the balance shaft main gear buffer spring 434.

[0139] The cylinder body 310 and the box body 320 are an integrated cylinder body box body 300, characterized in that: the cylinder body 310 and the box body 320 are an integrated structure and belong to an integral part, such as Figure 8 .

[0140] In some embodiments of the present application, a driven gear is further provided on the balance shaft 420, and a driving gear is provided on the crankshaft 410. The driving gear and the driven gear are meshed with each other, and the second gear is located on the outside of the driven gear.

[0141] On the one hand, it is convenient to assemble the first gear without affecting the assembly of the driven gear; on the other hand, the position of the first gear enables the position of the water pump 110 to be adjusted to the outer side of the balance shaft 420 of the first gear, which can reserve enough space for the water pump 110 and make the engine more compact and the space utilization more reasonable.

[0142] The cooling channel comprises:

[0143] The cylinder head 210 cooling channel is connected to the connecting pipe 183. To ensure that the cooling effect of the cylinder head cooling water reaches the best effect, the cooling water outlet of the cylinder head 210 is the highest point of the cooling channel; the connecting pipe 183 is connected to the thermostat 190.

[0144] An embodiment of the present application also provides a motorcycle, comprising an engine as described above, which effectively solves the technical problems existing in the related art that since each channel needs to be connected around the periphery of the engine to cool the engine with the coolant passing through the channel, the total length of the water channel will increase, resulting in an increase in the time and fluid resistance required for the coolant to flow from the water pump 110 to the cylinder body 310, a decrease in cooling efficiency, and an increase in mechanical loss.

[0145] 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 aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may 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 cylinder body, wherein the cylinder body has a cooling channel and a cooling water inlet; A cylinder head gasket, the cylinder head gasket is used to connect the cooling passages of the cylinder block and the cylinder head, and the cylinder head gasket is provided with cooling through holes; A cylinder head, wherein the cylinder head has a cooling channel, the cylinder head is provided with a cooling water outlet pipe, the outlet pipe is the highest point of the cooling channel, and the cooling water outlet pipe is communicated with a radiator; A left cover, wherein the left cover is provided with a cooling channel, and a water pump rotor, a water seal, a bearing and a water pump driving gear are arranged inside the left cover; A water pump cover, the water pump cover is communicated with the cooling channel, the water pump cover is located on the left side of the left cover, and the water pump cover is provided with a cooling water inlet; a radiator, the radiator being located in front of the axis of the cylinder body and being in communication with the water pump cover; A thermostat, the thermostat being located in front of the axis of the cylinder body, the thermostat being connected to the radiator and the cooling channel; A water pump is located on the left side of the cylinder body, and the thermostat is located on the rear side of the cylinder body.

2. The engine according to claim 1, characterized in that The engine also includes: The piston is arranged on the cylinder body, and the water pump is located at the left front part of the axis of the piston.

3. The engine according to claim 1, characterized in that The engine also includes: A circulation pipeline, one end of which is connected to a radiator, and the other end of which is connected to the inlet of the cooling channel of the water pump cover. The circulation pipeline is located on the left side of the axis of the cylinder head.

4. The engine according to claim 3, characterized in that The circulation pipeline connects the radiator-water pump-left cover channel-cylinder body-cylinder head-thermostat-radiator through a cooling water pipe to form a closed water circuit.

5. The engine according to claim 1, characterized in that The engine also includes: A water inlet pipe, wherein a first end of the water inlet pipe is connected to the thermostat, and a second end of the water inlet pipe is connected to the radiator; a water outlet pipe, the water outlet pipe connecting the radiator and the water pump cover, wherein the water outlet pipe is located at the left front part of the cylinder body; A connecting pipe, wherein a first end of the connecting pipe is connected to a first end of a water outlet pipe of a cylinder head, a second end of the connecting pipe is connected to a second interface of the thermostat, and the connecting pipe is located at an upper portion of the cylinder body.

6. The engine according to claim 1, characterized in that The engine also includes: A box body, the box body is connected to the cylinder body, and the water pump is located at the left part of the box body; A clutch, wherein the clutch is mounted in the housing; A crankshaft, wherein the crankshaft is mounted in the housing; A water pump, the water pump is arranged on the left side of the engine, and the water pump is located on the left side of the box; and a clutch, the clutch being arranged on the right side of the engine; Wherein, a line connecting the center of the water pump and the center of the clutch is located above the central axis of the crankshaft.

7. The engine according to claim 6, characterized in that A difference between a distance between a center of the water pump and a center of the crankshaft and a distance between a center of the clutch and a center of the crankshaft is within a preset range.

8. The engine according to claim 6, characterized in that The engine also includes: A cylinder body, the cylinder body is connected to the box body, the left cover connects the box body and the cylinder body, and the water pump is arranged on the left side of the left cover; A balancing shaft, the balancing shaft being rotatably mounted in the box; Wherein, the crankshaft is connected to the balance shaft through a gear assembly, so that the balance shaft is driven; Wherein, the balance shaft is connected to the water pump shaft through a gear assembly to drive the water pump; A water pump shaft, wherein the water pump shaft is installed in the left cover, and the crankshaft, the water pump shaft and the balance shaft are arranged in a triangle; Wherein, the water pump shaft and the crankshaft are arranged front and back, and the auxiliary shaft is arranged above the center line connecting the crankshaft and the water pump shaft; The balance shaft is arranged in front of the crankshaft.

9. The engine according to claim 8, characterized in that The engine also includes: A water pump body, wherein the water pump body is arranged on the left side of the engine, and the water pump is located on the front side of the cylinder body; a water pump shaft, the water pump shaft being mounted on the water pump body and used for driving the impeller on the water pump body to rotate; a first gear being mounted on the water pump shaft; A second gear is mounted on the balance shaft, and the second gear is meshed with the first gear; A driven gear is also provided on the balance shaft, a driving gear is provided on the crankshaft, the driving gear and the driven gear are meshed with each other, and the second gear and the first gear are located on the left side of the driven gear.

10. A motorcycle, characterized in that: The motorcycle comprises: An engine as claimed in any one of claims 1 to 9.

Images