engine

Abstract

The application discloses an engine, comprising: a first working mode and a second working mode; a crankcase comprising a first tank and a second tank; a transmission mechanism at least partially arranged in the second tank and comprising a gearbox gear; the first tank and the second tank comprising a first state capable of being disconnected by a lubricating system and a second state capable of being communicated by the lubricating system; when the engine is in the second working mode, the gearbox gear is in a second speed mode, a first gearbox oil passage is used for conveying lubricating oil in the first tank to the second tank and conveying the lubricating oil to the gearbox gear. The application has the beneficial effects that: a special lubricating oil passage can be arranged for the gearbox gear, the gearbox gear is under the joint action of the lubricating oil passage and splash lubrication, better lubricating effect is achieved, the wear speed of the gearbox gear is slowed down, and the service life of the crankcase is prolonged.

Description

Technical Field

[0001] This invention relates to the field of power systems, and in particular to an engine. Background Technology

[0002] Motorcycles, as a means of transportation, have become an indispensable part of life for sports enthusiasts. A problem with current racing (or sportbike) motorcycle engines, which have high power output and RPM, is that the lubrication system lacks dedicated lubrication channels for the gearbox gears, relying solely on splash lubrication. This results in poor lubrication, leading to excessive gear wear and, in severe cases, directly shortening the gearbox's lifespan. Summary of the Invention

[0003] To address the issue of the lack of dedicated lubrication lines for gearbox gears in the lubrication system of engines with high power output and speed, this invention provides an engine that can provide dedicated lubrication lines for gearbox gears. This allows the gearbox gears to achieve better lubrication through the combined action of the lubrication lines and splash lubrication, thereby slowing down the wear rate of the gearbox gears and increasing the service life of the crankcase.

[0004] To achieve the above objectives, the present invention discloses an engine, comprising at least: a first operating mode and a second operating mode; the engine further comprising: a crankcase, the crankcase comprising a first housing and a second housing; a crankshaft connecting rod mechanism, the crankshaft connecting rod mechanism being at least partially disposed in the first housing; a transmission mechanism, the transmission mechanism being at least partially disposed in the second housing and including a gearbox gear; when the engine is in the first operating mode, the gearbox gear is in a first speed mode; when the engine is in the second operating mode, the gearbox gear is in a second speed mode; the speed in the second speed mode is greater than the speed in the first speed mode; the engine further comprising: a lubrication system, the first housing and the second housing comprising a first state that can be disconnected by the lubrication system and a second state that can be connected by the lubrication system; the lubrication system comprising: a first main oil passage for conveying lubricating oil; a first gearbox oil passage connected to the first main oil passage; when the engine is in the second operating mode, the gearbox gear is in the second speed mode, the first gearbox oil passage being used to convey lubricating oil from the first housing to the second housing and to the gearbox gear.

[0005] Furthermore, when the engine is in the first operating mode, the first housing and the second housing are in the first state; when the engine is in the second operating mode, the first housing and the second housing are in the second state.

[0006] Furthermore, the lubrication system also includes a second main oil passage, which is disposed between the first main oil passage and the first gearbox oil passage, and the second main oil passage connects the first main oil passage and the first gearbox oil passage.

[0007] Furthermore, the second main oil passage includes a first auxiliary oil passage and a second auxiliary oil passage; the first auxiliary oil passage connects the first main oil passage and the second auxiliary oil passage; the second auxiliary oil passage connects the first auxiliary oil passage and the first gearbox oil passage.

[0008] Furthermore, the second main oil passage is used to transport lubricating oil from the first main oil passage to the first housing, so that the lubricating oil is transported from the first housing to the first gearbox oil passage.

[0009] Furthermore, the engine also includes: an oil reservoir, which is disposed on the first housing and is used to store lubricating oil in the first housing; and an oil delivery mechanism, which is disposed between the oil reservoir and the first gearbox oil passage; when the engine is in the second operating mode, the oil delivery mechanism connects the oil reservoir and the first gearbox oil passage and is used to deliver lubricating oil from the oil reservoir to the first gearbox oil passage.

[0010] Furthermore, the crankcase is provided with an oil inlet and an oil outlet; the oil inlet is located on the first housing and is connected to the oil storage mechanism for conveying lubricating oil from the oil storage mechanism to the oil delivery mechanism; the oil outlet is located at least partially on the first housing and at least partially on the second housing, and is located between the oil delivery mechanism and the first gearbox oil passage; when the engine is in the second operating mode, the oil delivery mechanism conveys lubricating oil to the first gearbox oil passage through the oil outlet.

[0011] Furthermore, the transmission mechanism also includes a gearbox journal; the lubrication system also includes a second gearbox oil passage; the second gearbox oil passage is connected to the first main oil passage and is used to transport lubricating oil from the first main oil passage to the second gearbox oil passage so that the lubricating oil is delivered to the gearbox journal.

[0012] Furthermore, the lubrication system also includes: a first oil chamber, which is disposed between the first main oil passage and the second main oil passage, for storing and transporting the lubricating oil in the first main oil passage to the second main oil passage; and a second oil chamber, which is disposed between the first main oil passage and the second gearbox oil passage, for storing and transporting the lubricating oil in the first main oil passage to the second gearbox oil passage.

[0013] Furthermore, the engine also includes an electric motor oil chamber; the lubrication system also includes an electric motor oil passage, which is located between the electric motor oil chamber and the first main oil passage, and is used to transport the lubricating oil in the first main oil passage to the electric motor oil chamber.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] When the engine is in the second operating mode, the first and second crankcases are connected through the lubrication system, so that the lubricating oil in the first crankcase is delivered to the second crankcase and then to the gearbox gears. In this way, a dedicated lubrication circuit can be arranged for the gearbox gears, so that the gearbox gears can achieve a better lubrication effect under the combined action of the lubrication circuit and splash lubrication, thereby slowing down the wear rate of the gearbox gears and improving the service life of the crankcase. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the engine of the present invention.

[0017] Figure 2 This is a cross-sectional schematic diagram of the engine of the present invention.

[0018] Figure 3 This is a partial cross-sectional schematic diagram of the engine of the present invention.

[0019] Figure 4 This is a schematic diagram of the crankshaft structure of the present invention.

[0020] Figure 5 This is a cross-sectional schematic diagram of the crankshaft of the present invention.

[0021] Figure 6 This is a schematic diagram of the first module of the lubrication system of the present invention.

[0022] Figure 7 This is a schematic diagram of the second module of the lubrication system of the present invention.

[0023] Figure 8 This is a schematic diagram of the third module of the lubrication system of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in specific embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, an engine 100 includes a housing assembly 200, which includes a cylinder head cover 1, a cylinder head 2, a cylinder block 3, a crankcase 4, and an oil pan 5. The cylinder head 2 is at least partially located between the cylinder head cover 1 and the cylinder block 3, and serves to connect the cylinder head cover 1 and the cylinder block 3. The crankcase 4 is at least partially located between the cylinder block 3 and the oil pan 5, and serves to connect the cylinder block 3 and the oil pan 5. The crankcase 4 and the oil pan 5, when connected, form an oil reservoir for collecting and storing lubricating oil. Side covers 6 are provided on both sides of the crankcase 4, and the side covers 6 are used to seal the crankcase 4.

[0026] like Figure 2As shown, the outer casing assembly 200 forms a receiving space 201. Specifically, the receiving space 201 includes a first receiving space 2011, a second receiving space 2012, and a third receiving space 2013. The first receiving space 2011 is the internal space of the cylinder head 2, the second receiving space 2012 is the internal space of the cylinder block 3, and the third receiving space 2013 is the internal space of the crankcase 4.

[0027] The engine 100 also includes a camshaft mechanism 7, an intake and exhaust mechanism 8, an ignition mechanism 9, a piston mechanism 11, a transmission mechanism 12, a crankshaft connecting rod mechanism 13, and a balancing mechanism 14. The camshaft mechanism 7 is at least partially disposed in a first receiving space 2011. The intake and exhaust mechanism 8 is at least partially disposed in the first receiving space 2011. The ignition mechanism 9 is at least partially disposed in the first receiving space 2011. The piston mechanism 11 is at least partially disposed in a second receiving space 2012. The transmission mechanism 12 is at least partially disposed in a third receiving space 2013. The crankshaft connecting rod mechanism 13 is at least partially disposed in the third receiving space 2013. The balancing mechanism 14 is at least partially disposed in the third receiving space 2013.

[0028] The intake and exhaust mechanism 8 controls the intake of air and the exhaust of exhaust gases. The piston mechanism 11 connects to the crankshaft connecting rod mechanism 13, and transmits power to the crankshaft connecting rod mechanism 13. The crankshaft connecting rod mechanism 13 connects to the transmission mechanism 12, and transmits the power transmitted by the piston mechanism 11 to the transmission mechanism 12. The transmission mechanism 12 transmits power to the vehicle.

[0029] like Figure 2 As shown, the crankshaft connecting rod mechanism 13 includes a crankshaft 131 and a connecting rod 132. The crankshaft 131 connects to the connecting rod 132, the balance mechanism 14, and the cam mechanism 7. The connecting rod 132 connects to the piston mechanism 11.

[0030] like Figure 2 and Figure 3 As shown, the side cover 6 has a motor oil chamber 601, which is at least partially connected to the crankcase 4. At least a portion of the generator 15 is housed within the motor oil chamber 601. The motor oil chamber 601 supplies lubricating oil to the generator 15. The generator 15 may be a magneto, used to supply high-voltage electricity to the ignition mechanism 9, thereby enabling the ignition mechanism 9 to operate.

[0031] like Figure 4 and Figure 5As shown, in one implementation, the crankshaft 131 includes a shaft body 1311, a main journal 1312, a connecting rod journal 1313, several oil passages 1314, and several crankshaft oil passages 1315. The main journal 1312 is at least partially disposed on the shaft body 1311 and is used to fix the crankshaft 131 in the crankcase 4. During engine operation, the main journal 1312 can restrict the movement position of the crankshaft 131, facilitating stable movement of the crankshaft 131. The connecting rod journal 1313 is at least partially disposed on the shaft body 1311 and is used to connect the connecting rod 132, allowing the power of the connecting rod 132 to be transmitted to the crankshaft 131 through the connecting rod journal 1313. Several oil passage holes 1314 are at least partially provided on the shaft body 1311, several oil passage holes 1314 are at least partially provided on the main journal 1312, and several oil passage holes 1314 are at least partially provided on the connecting rod journal 1313. The oil passage holes 1314 are used to deliver lubricating oil to the main journal 1312 and the connecting rod journal 1313, reduce the friction between the crankshaft 131 and the connecting rod 132, reduce the friction between the crankshaft 131 and the crankcase 4, thereby improving the lubrication effect between the crankshaft 131 and the connecting rod 132, improving the lubrication effect between the crankshaft 131 and the crankcase 4, and thus improving the service life of the engine. Several crankshaft oil passages 1315 are at least partially arranged along the axial direction of the crankshaft 131, and are at least partially disposed within the crankshaft body 1311. These oil passages 1315 connect to several oil passages 1314, forming channels for lubricating oil within the crankshaft 131, facilitating the delivery of lubricating oil to the main journal 1312 and connecting rod journal 1313. The crankshaft body 1311, main journal 1312, and connecting rod journal 1313 are integrally formed parts.

[0032] like Figure 4 and Figure 5 As shown, in one implementation, the main journal 1312 includes a first main journal 1312a and a second main journal 1312b. The first main journal 1312a is at least partially disposed on the shaft body 1311, and the second main journal 1312b is at least partially disposed on the shaft body 1311. The first main journal 1312a is disposed on one section of the crankshaft 131, and the second main journal 1312b is disposed on the other section of the crankshaft 131, which facilitates fixing the crankshaft 131 in the crankcase 4 and restricts the movement position of the crankshaft 131 during engine operation. The connecting rod journal 1313 is at least partially disposed between the first main journal 1312a and the second main journal 1312b.

[0033] like Figure 4 and Figure 5As shown, in one implementation, the plurality of oil passages 1314 include a third oil passage 1314a, a first oil passage 1314b, and a second oil passage 1314c. The third oil passage 1314a is at least partially disposed on the connecting rod journal 1313, used to deliver lubricating oil to the connecting rod journal 1313, thereby reducing friction between the connecting rod 132 and the crankshaft 131 and improving the service life of the crankshaft connecting rod mechanism 13. The first oil passage 1314b is at least partially disposed on the first main journal 1312a, used to deliver lubricating oil to the first main journal 1312a, thereby reducing friction between the first main journal 1312a and the crankcase 4, and delivering lubricating oil to at least a portion of the crankshaft oil passage 1315. Specifically, the first oil passage 1314b penetrates the first main journal 1312a, allowing lubricating oil to enter the first oil passage 1314b from both sides of the first main journal 1312a. This allows more lubricating oil to enter the first oil passage 1314b, thereby delivering more lubricating oil to at least a portion of the crankshaft oil passage 1315. The second oil passage 1314c is at least partially located at the end of the crankshaft 131 where the second main journal 1312b is located. The second oil passage 1314c is at least partially connected to the outside of the crankshaft 131 and is used to deliver lubricating oil to the second main journal 1312b, facilitating the delivery of lubricating oil to at least a portion of the crankshaft oil passage 1315.

[0034] like Figure 4 and Figure 5As shown, in one implementation, a plurality of crankshaft oil passages 1315 include a first oil passage 1315a, a second oil passage 1315b, and a third oil passage 1315c. The first oil passage 1315a is at least partially disposed in the first section of the crankshaft 131 and at least partially disposed in the first main journal 1312a. Specifically, the first oil passage 1315a is at least partially disposed in the first section of the shaft body 1311. The first oil passage 1315a is generally disposed along the axial direction of the crankshaft 131, and at least partially communicates with the first oil passage 1314b, for conveying the lubricating oil conveyed by the first oil passage 1314b to the third oil passage 1315c. Specifically, the first oil passage 1314b is at least partially disposed on the first main journal 1312a and on the first oil passage 1315a, for conveying lubricating oil to the first oil passage 1315a. The second oil passage 1315b is at least partially disposed in the second section of the crankshaft 131 and at least partially disposed in the second main journal 1312b. Specifically, the second oil passage 1315b is at least partially disposed in the second section of the shaft body 1311. At least a portion of the second oil passage 1315b is disposed substantially along the axial direction of the crankshaft 131, that is, at least a portion of the second oil passage 1315b is substantially parallel to the first oil passage 1315a. The second oil passage 1315b is at least partially connected to the second oil passage 1314c, and is used to deliver the lubricating oil conveyed by the second oil passage 1314c to the connecting rod journal 1313. Specifically, the second oil passage 1314c is at least partially disposed at the end of the crankshaft 131 where the second main journal 1312b is located, and the second oil passage 1314c is disposed on the second oil passage 1315b, and is used to deliver lubricating oil to the second oil passage 1315b. Furthermore, the second oil passage 1315b is at least partially disposed in the connecting rod journal 1313, and at least partially connected to the third oil passage 1314a, for conveying lubricating oil in the second oil passage 1315b to the third oil passage 1314a, thereby conveying lubricating oil to the connecting rod journal 1313. Specifically, the third oil passage 1314a is at least partially disposed on the connecting rod journal 1313 and at least partially disposed on the second oil passage 1315b, for conveying lubricating oil in the second oil passage 1315b to the connecting rod journal 1313. The third oil passage 1315c is at least partially disposed in the shaft body 1311, and at least partially connected to the first oil passage 1315a. The third oil passage 1315c is at least partially connected to the outside of the crankshaft 131, for conveying the lubricating oil conveyed by the first oil passage 1315a to the outside of the crankshaft 131, thereby conveying lubricating oil to the motor oil chamber 601. Figure 3As shown, specifically, the crankcase 4 is provided with a motor oil passage 303, which is located between the third oil passage 1315c and the motor oil chamber 601. It is used to connect the third oil passage 1315c and the motor oil chamber 601, so that the lubricating oil in the third oil passage 1315c is transported to the motor oil chamber 601 through the motor oil passage 303, thereby realizing the lubrication and cooling of the generator 15.

[0035] In this embodiment, the third oil passage 1315c is essentially a cylindrical hole, and its diameter is smaller than that of the first oil passage 1314b, facilitating the delivery of lubricating oil from the first oil passage 1314b to the third oil passage 1315c. Specifically, the diameter of the third oil passage 1315c is greater than or equal to 1 mm and less than or equal to 3 mm. The diameter of the first oil passage 1314b is greater than or equal to 4 mm and less than or equal to 6 mm. The ratio of the diameter of the first oil passage 1314b to the diameter of the third oil passage 1315c is greater than or equal to 0.7 and less than or equal to 6.

[0036] In this embodiment, the second oil passage 1315b includes a first channel and a second channel. The first channel and the second channel are interconnected. The first channel is at least partially disposed in the second section of the shaft body 1311 and at least partially disposed in the second main journal 1312b. The first channel is arranged substantially along the axial direction of the crankshaft 131, that is, the first channel is substantially parallel to the first oil passage 1315a. The first channel is connected to the second oil passage 1314c, and is used to transport the lubricating oil conveyed by the second oil passage 1314c to the second channel. Specifically, the second oil passage 1314c is at least partially disposed at the end of the crankshaft 131 where the second main journal 1312b is located, and the second oil passage 1314c is disposed on the first channel, and is used to transport the lubricating oil to the second channel. The second channel is at least partially disposed in the connecting rod journal 1313 and at least partially disposed in the shaft body 1311. The second channel communicates with the third oil passage 1314a and is used to transport lubricating oil in the second oil passage 1315b to the third oil passage 1314a, thereby delivering lubricating oil to the connecting rod journal 1313. Specifically, the third oil passage 1314a is at least partially disposed on the connecting rod journal 1313 and at least partially disposed on the second channel, and is used to transport lubricating oil in the second oil passage 1315b to the connecting rod journal 1313, which helps to reduce friction between the connecting rod journal 1313 and the connecting rod 132, thereby improving the service life of the crankshaft connecting rod mechanism 13.

[0037] like Figure 4 and Figure 5As shown, in one implementation, the shaft body 1311 includes a first straight shaft 1311a, a second straight shaft 1311b, and a first crankshaft 1311c. The first straight shaft 1311a is connected to a first main journal 1312a, which is disposed between the first straight shaft 1311a and the first crankshaft 1311c. The second straight shaft 1311b is connected to a second main journal 1312b, which is disposed between the second straight shaft 1311b and the first crankshaft 1311c. A connecting rod journal 1313 is disposed on the first crankshaft 1311c, which is disposed between the first main journal 1312a and the second main journal 1312b. The first straight shaft 1311a, the first main journal 1312a, the first crankshaft 1311c, the connecting rod journal 1313, the second main journal 1312b, and the second straight shaft 1311b are integrally formed parts. Specifically, the first oil passage 1315a is at least partially disposed in the first straight shaft 1311a, and the first oil passage 1315a is at least partially disposed in the first main journal 1312a, so that the first oil passage 1314b can deliver lubricating oil to the first oil passage 1315a through the first main journal 1312a, that is, deliver lubricating oil to the first straight shaft 1311a. The third oil passage 1315c is at least partially disposed in the first straight shaft 1311a, so that lubricating oil can be delivered to the third oil passage 1315c through the first oil passage 1315a, thereby delivering lubricating oil to the outside of the crankshaft 131, and then delivering lubricating oil to the motor oil chamber 601 to cool the generator 15. The second oil passage 1315b is at least partially disposed in the second straight shaft 1311b, the second main journal 1312b, and the first crankshaft 1311c. Specifically, the first channel is at least partially disposed in the second straight shaft 1311b, the second main journal 1312b, and the first crankshaft 1311c, so that the second oil passage 1314c can deliver lubricating oil to the second oil passage 1315b, and through the second oil passage 1315b, deliver lubricating oil to the second straight shaft 1311b, the second main journal 1312b, and the first crankshaft 1311c.The second oil passage 1315b is at least partially disposed in the second main journal 1312b, the first crankshaft 1311c, and the connecting rod journal 1313. Specifically, the second channel is at least partially disposed in the second main journal 1312b, the first crankshaft 1311c, and the connecting rod journal 1313, facilitating the delivery of lubricating oil through the second oil passage 1315b to the third oil passage 1314a, thereby delivering lubricating oil to the connecting rod journal 1313 through the third oil passage 1314a, reducing friction between the connecting rod 132 and the connecting rod journal 1313, and thus improving the service life of the crankshaft connecting rod mechanism 13.

[0038] like Figure 4 and Figure 5 As shown, in one implementation, one end of the first oil passage 1315a is at least partially disposed in the first main journal 1312a and connected to the first oil passage 1314b, facilitating the delivery of lubricating oil from the first oil passage 1314b to the first oil passage 1315a. The other end of the first oil passage 1315a is at least partially disposed in the first straight shaft 1311a and is not connected to the outside of the crankshaft 131, preventing lubricating oil from overflowing from the first oil passage 1315a, thereby allowing the lubricating oil to be primarily delivered to the third oil passage 1315c, and subsequently delivered to the motor oil chamber 601. The other end of the first oil passage 1315a is not connected to the outside of the crankshaft 131, which can be achieved by sealing with bolts, etc. Specifically, the other end of the first oil passage 1315a is provided with internal threads, and the other end of the first oil passage 1315a is connected to the bolt through threads, thereby achieving the sealing of the other end of the first oil passage 1315a and preventing lubricating oil from overflowing from the first oil passage 1315a, so that the lubricating oil is basically transported to the third oil passage 1315c.

[0039] The first section of the second oil passage 1315b is at least partially disposed in the second straight shaft 1311b and connects to the second oil passage 1314c, facilitating the delivery of lubricating oil from the second oil passage 1314c to the second oil passage 1315b. The first section of the second oil passage 1315b is also known as the first channel. The second section of the second oil passage 1315b is at least partially disposed in the connecting rod journal 1313 and connects to the third oil passage 1314a, allowing lubricating oil to be delivered to the third oil passage 1314a, thereby delivering lubricating oil to the connecting rod journal 1313. This reduces friction between the connecting rod 132 and the connecting rod journal 1313, thus improving the service life of the crankshaft connecting rod mechanism 13. The second section of the second oil passage 1315b is also known as the second channel. One end of the third oil passage 1315c connects to the first oil passage 1315a, facilitating the delivery of lubricating oil from the first oil passage 1315a to the third oil passage 1315c. Specifically, one end of the third oil passage 1315c connects to the middle of the first oil passage 1315a, which shortens the path of the lubricating oil and thus delivers it to the motor oil chamber 601 more quickly. The third oil passage 1315c is angled relative to the first oil passage 1315a, allowing the lubricating oil to be delivered to the motor oil chamber 601 along the inclined surface, thereby improving the lubrication effect of the generator 15. The other end of the third oil passage 1315c connects to the outside of the crankshaft 131, facilitating the delivery of lubricating oil from the third oil passage 1315c to the outside of the crankshaft 131, and then through the motor oil passage 303 to the motor oil chamber 601.

[0040] like Figure 3As shown, in one implementation, a first bearing 133 is provided on the first main journal 1312a, a second bearing 134 is provided on the second main journal 1312b, and a third bearing 135 is provided on the connecting rod journal 1313. The first bearing 133 serves as a bearing and lubricant when the crankshaft 131 rotates. The first bearing 133 prevents lubricating oil from flowing out of the first oil passage 1314b during engine operation, facilitating the transport of lubricating oil primarily from the first oil passage 1314b to the first oil passage 1315a, and thus to the third oil passage 1315c. The second bearing 134 serves as a bearing and lubricant when the crankshaft 131 rotates. The third bearing 135 serves as a bearing and lubricant for the connecting rod 132 and the crankshaft 131 when they move together. The first bearing shell 133 is provided with a first hole corresponding to the first oil passage 1314b, facilitating the delivery of lubricating oil from the first bearing shell 133 to the first oil passage 1314b. The first bearing shell 133 reduces the clearance between the crankshaft 131 and the crankcase 4, and when the engine 100 is running, it essentially blocks the first oil passage 1314b. Only when the first hole coincides with the first oil passage 1314b, the lubricating oil is delivered to the first bearing shell 133 through high-pressure oil passages or other means, thereby delivering the lubricating oil through the first oil passage 1314b to the first oil passage 1315a. Through the above method, the lubricating oil can be effectively prevented from being delivered from the first oil passage 1314b to the crankcase 4, thus ensuring that the lubricating oil is primarily delivered to the first oil passage 1315a, and then delivered to the motor oil chamber 601 through the third oil passage 1315c. In this context, "engine 100 running" refers to the rotation of the crankshaft 131, specifically when the first oil passage 1314b rotates with the crankshaft 131. In this embodiment, lubricating oil is delivered to the first bearing 133 via a high-pressure oil circuit, and then through a first hole on the first bearing 133 into the first oil passage 1314b. Subsequently, it is delivered to the motor oil chamber 601 via the first oil passage 1315a and the third oil passage 1315c. Since the pressure in the first oil passage 1315a is lower than the pressure of the lubricating oil entering the first oil passage 1314b, the lubricating oil is primarily delivered to the first oil passage 1314b, thereby achieving lubrication of the generator 15 through the motor oil chamber 601.

[0041] like Figure 4 and Figure 5 As shown, in one implementation, the crankshaft 131 also includes a counterweight 1316. The counterweight 1316 is at least partially disposed on the first crankshaft 1311c, and is located on the side of the first crankshaft 1311c away from the connecting rod journal 1313, to overcome the centrifugal force generated during the rotation of the crankshaft 131. Specifically, there can be two counterweights 1316, and the connecting rod journal 1313 is at least partially disposed between the two counterweights 1316.

[0042] like Figure 2 As shown, in one implementation, the engine 100 also includes an oil delivery mechanism 17, which is at least partially disposed in the third receiving space 2013. The oil delivery mechanism 17 is used to deliver lubricating oil from the crankcase 4. A mechanism cover 16 is provided on one side of the crankcase 4; specifically, a mechanism cover 16 is provided on one of the side covers 6. The mechanism cover 16 is used to cover and seal the oil delivery mechanism 17, thereby retaining the lubricating oil inside the engine 100. The crankcase 4 includes a first housing 401 and a second housing 402, which are separated by a housing wall 403 and deliver lubricating oil via the oil delivery mechanism 17. Specifically, the crankcase 4 is provided with an oil inlet 4011 and an oil outlet 4013. The oil inlet 4011 is located on the first housing 401. The oil outlet 4012 is at least partially located on the first housing 401 and at least partially located on the second housing 402. The oil inlet 4011 and oil outlet 4012 are connected by the oil delivery mechanism 17. The oil inlet 4011 connects to the first housing 401, and the oil outlet 4012 connects the first housing 401 and the second housing 402, thereby allowing lubricating oil to be delivered from the first housing 401 to the second housing 402. This facilitates the delivery of lubricating oil to the transmission mechanism 12 via the oil delivery mechanism 17, thereby improving the lubrication effect of the transmission mechanism 12 and extending its service life. The oil delivery mechanism 17 can be an air scavenging pump.

[0043] In addition, the first housing 401 is equipped with an oil storage mechanism 4013, which is located near and connected to the oil inlet 4011. This mechanism stores lubricating oil and then delivers it to the second housing 402 via the oil delivery mechanism 17. Specifically, the lubricating oil in the first housing 401 accumulates in the oil storage mechanism 4013 due to gravity, thus achieving oil storage. When the oil delivery mechanism 17 is working, lubricating oil is delivered from the oil storage mechanism 4013 to the oil inlet 4011. The lubricating oil in the oil inlet 4011 is then delivered to the oil outlet 4012 via the oil delivery mechanism 17, and finally delivered to the second housing 402 via the oil outlet 4012. When the oil delivery mechanism 17 is not working, the lubricating oil in the oil inlet 4011 cannot be delivered to the oil outlet 4012, and the lubricating oil can be stored in the oil storage mechanism 4013.

[0044] like Figure 6As shown, in one implementation, the engine 100 includes a lubrication system 300, which includes a first main oil passage 301, a transmission oil passage 302, an electric motor oil passage 303, a second main oil passage 304, and an oil pan 5. The second main oil passage 304 includes a first auxiliary oil passage 3041 and a second auxiliary oil passage 3042. The first auxiliary oil passage 3041 refers to the flow passage for lubricating oil in the cylinder block 3, and the second auxiliary oil passage 3042 refers to the flow passage for lubricating oil in the cylinder head. The second main oil passage 304 connects to the first main oil passage 301, thereby transporting the lubricating oil in the first main oil passage 301 to the second main oil passage 304. The oil pan 5 is at least partially connected to the first main oil passage 301, the transmission oil passage 302, and the motor oil passage 303. This allows lubricating oil to be transported through the oil pan 5 from the transmission oil passage 302 and the motor oil passage 303 to the first main oil passage 301, facilitating the formation of a circuit within the engine 100 and achieving lubrication of the internal components. The first main oil passage 301 is at least partially connected to the transmission oil passage 302, the motor oil passage 303, and the first auxiliary oil passage 3041, facilitating the transport of lubricating oil among these passages and achieving lubrication of the components within them. Specifically, the lubricating oil in the first main oil passage 301 is delivered to the transmission oil passage 302, the electric motor oil passage 303, and the first auxiliary oil passage 3041, thereby improving the lubrication effect of the lubricating oil on the engine 100. The first auxiliary oil passage 3041 connects to the second auxiliary oil passage 3042, allowing lubricating oil to be transported between the first auxiliary oil passage 3041 and the second auxiliary oil passage 3042. Specifically, lubricating oil is delivered from the first main oil passage 301 to the second auxiliary oil passage 3042 via the first auxiliary oil passage 3041. The second auxiliary oil passage 3042 connects to the transmission oil passage 302, allowing lubricating oil to be transported between the second auxiliary oil passage 3042 and the transmission oil passage 302. Specifically, lubricating oil is delivered from the first auxiliary oil passage 3041 to the transmission oil passage 302 via the second auxiliary oil passage 3042.

[0045] like Figure 6As shown, in one implementation, the transmission oil passage 302 includes a second transmission oil passage 3021 and a first transmission oil passage 3022. The second transmission oil passage 3021 connects to the second housing 402 and is used to deliver lubricating oil to the transmission mechanism 12. The first transmission oil passage 3022 connects to the second housing 402 and is used to deliver lubricating oil to the transmission mechanism 12. Specifically, the transmission mechanism 12 includes a transmission gear 121 and a transmission journal. The second transmission oil passage 3021 delivers lubricating oil to the transmission journal for lubrication; the first transmission oil passage 3022 delivers lubricating oil to the transmission gear 121 for lubrication, thereby achieving lubrication of the transmission journal and the transmission gear 121. Furthermore, when the engine 100 has high power output and speed, the transmission gear 121 is specifically lubricated to prevent excessive wear and thus improve its service life. The second transmission oil passage 3021 is located between the first main oil passage 301 and the oil pan 5. The second transmission oil passage 3021 connects the first main oil passage 301 and the oil pan 5, facilitating the formation of a circuit for lubricating oil within these three passages, thus achieving lubrication of the components within them. The first transmission oil passage 3022 connects to the second main oil passage 304, allowing lubricating oil to be transported from the second main oil passage 304 to the first transmission oil passage 3022. Specifically, the first transmission oil passage 3022 is disposed between the second auxiliary oil passage 3042 and the oil pan 5. The first transmission oil passage 3022 connects the second auxiliary oil passage 3042 and the oil pan 5, facilitating the formation of a circuit of lubricating oil in the first transmission oil passage 3022, the second auxiliary oil passage 3042, the first auxiliary oil passage 3041, the first main oil passage 301, and the oil pan 5, thereby achieving lubrication of the parts in the first transmission oil passage 3022, the second auxiliary oil passage 3042, and the oil pan 5. In this embodiment, the second main oil passage 304 is disposed between the first main oil passage 301 and the first transmission oil passage 3022. The second main oil passage 304 connects the first main oil passage 301 and the first transmission oil passage 3022, thereby allowing lubricating oil to be transported from the first main oil passage 301 to the first transmission oil passage 3022 through the second main oil passage 304. The second main oil passage 304 delivers lubricating oil from the first main oil passage 301 to the first housing 401, and then delivers lubricating oil from the first housing 401 to the first gearbox oil passage 3022.

[0046] like Figure 7As shown, the lubrication system 300 also includes a first oil chamber 305 and a second oil chamber 306. Specifically, the first oil chamber 305 is located between the first auxiliary oil passage 3041 and the first main oil passage 301. The first oil chamber 305 connects the first auxiliary oil passage 3041 and the first main oil passage 301, and is used to store the lubricating oil delivered by the first main oil passage 301, and deliver it to the first gearbox oil passage 3022 through the first auxiliary oil passage 3041 and the second auxiliary oil passage 3042. In addition, the first oil chamber 305 is located between the motor oil passage 303 and the first main oil passage 301, and the first oil chamber 305 connects the motor oil passage 303 and the first main oil passage 301, which facilitates the storage of the lubricating oil delivered by the first main oil passage 301 and its delivery to the motor oil passage 303. In this embodiment, the first oil chamber 305 delivers lubricating oil to the crankcase 4 to facilitate lubrication of the crankshaft 131. Specifically, the first oil chamber 305 delivers lubricating oil to the second bearing 134 and the third bearing 135 to facilitate lubrication of the crankshaft 131 and the connecting rod 132, thereby reducing friction between the crankshaft 131 and the crankcase 4, and between the crankshaft 131 and the connecting rod 132, thus improving the service life of the crankshaft connecting rod mechanism 13. Furthermore, the first oil chamber 305 delivers lubricating oil to the first bearing 133, which delivers the lubricating oil through the second oil passage 1314b to the third oil passage 1315c, thereby delivering the lubricating oil to the motor oil passage 303, and then through the motor oil passage 303 to the motor oil chamber 601 to lubricate the generator 15. Specifically, the second oil chamber 306 is located between the second gearbox oil passage 3021 and the first main oil passage 301. The second oil chamber 306 is at least partially disposed in the receiving space 201. The second oil chamber 306 connects the second gearbox oil passage 3021 and the first main oil passage 301, and is used to store the lubricating oil conveyed by the first main oil passage 301 and convey it to the second gearbox oil passage 3021.

[0047] like Figure 8As shown, the lubrication system 300 also includes a third main oil passage 308. The third main oil passage 308 includes a timing chain tensioner oil passage 3081, several camshaft oil passages 3082, several rocker arm nozzles 3083, and several oil nozzles 3084. The timing chain tensioner oil passage 3081 is disposed in the first receiving space 2011, the several camshaft oil passages 3082 are disposed in the first receiving space 2011, and the several rocker arm nozzles 3083 are disposed in the first receiving space 2011. A second auxiliary oil passage 3042 connects to the timing chain tensioner oil passage 3081, the several camshaft oil passages 3082, and the several rocker arm nozzles 3083, and is used to deliver lubricating oil to the timing chain tensioner oil passage 3081, the several camshaft oil passages 3082, and the several rocker arm nozzles 3083. A plurality of oil nozzles 3084 are disposed in the second receiving space 2012 for supplying lubricating oil to the piston mechanism 11, thereby lubricating the piston mechanism 11. A first auxiliary oil passage 3041 connects to the plurality of oil nozzles 3084 for conveying lubricating oil to the plurality of oil nozzles 3084, thereby lubricating the piston mechanism 11. The first auxiliary oil passage 3041 connects to a second auxiliary oil passage 3042, which conveys the lubricating oil conveyed by the first auxiliary oil passage 3041 to the cylinder head 2.

[0048] like Figure 8As shown, in one implementation, the lubricating oil in the second gearbox oil passage 3021 and the motor oil passage 303 lubricates the corresponding parts and then delivers the lubricating oil to the oil pan 5. The lubricating oil in the second bearing 134, the third bearing 135, the timing chain tensioner oil passage 3081, several camshaft oil passages 3082, several rocker arm nozzles 3083, and several oil nozzles 3084 lubricates the corresponding parts and then delivers the lubricating oil to the oil reservoir 4013. At this time, the lubrication system 300 also includes an oil delivery assembly 307. The oil delivery assembly 307 is the oil delivery mechanism 17. The oil delivery assembly 307 is used to connect or disconnect the first housing 401 and the second housing 402. The oil reservoir 4013 delivers lubricating oil to the first gearbox oil passage 3022 through the oil delivery assembly 307, lubricates the gearbox gear 121, and then delivers the lubricating oil to the oil pan 5. Specifically, the oil storage mechanism 4013 delivers lubricating oil to the oil delivery assembly 307 through the oil inlet 4011, and the oil delivery assembly 307 delivers lubricating oil to the first gearbox oil passage 3022 through the oil outlet 4012. The oil pan 5 is at least partially connected to the first main oil passage 301, thereby realizing the circulation of lubricating oil inside the engine 100. Specifically, the engine 100 includes at least a first operating mode and a second operating mode. The first housing 401 and the second housing 402 include a first state that can be disconnected by the lubrication system 300 and a second state that can be connected by the lubrication system 300, that is, the first housing 401 and the second housing 402 include a first state that can be disconnected by the oil delivery assembly 307 and a second state that can be connected by the oil delivery assembly 307.

[0049] As one implementation, the first operating mode refers to the engine 100 being stopped. When the engine 100 is in the first operating mode, the gearbox gear 121 is in a first speed mode, that is, the gearbox gear 121 is in a stopped state. The second operating mode refers to the engine 100 starting to run. When the engine 100 is in the second operating mode, the gearbox gear 121 is in a second speed mode, that is, the gearbox gear 121 is in a rotating state. The speed in the second speed mode is greater than the speed in the first speed mode. In this embodiment, when the engine 100 is in the first operating mode, the first housing 401 and the second housing 402 are in the first state. At this time, the oil delivery assembly 307 is not working, and lubricating oil cannot be delivered from the first housing 401 to the first gearbox oil passage 3022 through the oil delivery assembly 307. When the engine is in the second operating mode, the first housing 401 and the second housing 402 are in the second state. At this time, the oil delivery assembly 307 starts working, and lubricating oil is delivered from the first housing 401 to the first gearbox oil passage 3022 through the oil delivery assembly 307. Specifically, the lubricating oil in the first housing 401 is delivered to the second housing 402 through the oil delivery assembly 307, thereby delivering the lubricating oil to the gearbox gear 121. When the power output and speed of the engine 100 are both high, the gearbox gear 121 is specially lubricated to prevent the gearbox gear 121 from wearing out too quickly, thereby improving the service life of the gearbox gear 121.

[0050] As one implementation, the first operating mode refers to the engine 100 operating at low speed. When the engine 100 is in the first operating mode, the gearbox gear 121 is in a first speed mode, that is, the gearbox gear 121 is operating at low speed. The second operating mode refers to the engine 100 operating at high speed. When the engine 100 is in the second operating mode, the gearbox gear 121 is in a second speed mode, that is, the gearbox gear 121 is operating at high speed. Here, high-speed operation means that the operating speed of the engine 100 and / or the gearbox gear 121 is greater than or equal to a set threshold, and low-speed operation means that the operating speed of the engine 100 and / or the gearbox gear 121 is less than a set threshold. The set threshold can be changed according to requirements. In this embodiment, when the engine 100 is in the first operating mode, the first housing 401 and the second housing 402 are in a first state. At this time, the oil supply assembly 307 is not working, and lubricating oil cannot be delivered from the first housing 401 to the first gearbox oil passage 3022 through the oil supply assembly 307. When the engine is in the second operating mode, the first gearbox 401 and the second gearbox 402 are in the second state. At this time, the oil supply assembly 307 starts to work, and lubricating oil is transported from the first gearbox 401 to the first gearbox oil passage 3022 through the oil supply assembly 307. Specifically, the lubricating oil in the first gearbox 401 is transported to the second gearbox 402 through the oil supply assembly 307, thereby delivering the lubricating oil to the gearbox gear 121. When the engine 100 has a high power output and speed, the gearbox gear 121 is specially lubricated to prevent the gearbox gear 121 from wearing out too quickly, thereby improving the service life of the gearbox gear 121.

[0051] Specifically, the lubrication system 300 also includes a collection assembly 309. The collection assembly 309 includes an oil collector 3091, an oil pump 3092, and an oil filter 3093. The oil collector 3091 is at least partially disposed in the oil pan 5, the oil pump 3092 is at least partially disposed in the third receiving space 2013, and the oil filter 3093 is at least partially disposed in the third receiving space 2013. The oil pan 5 is connected to the oil collector 3091, and the oil filter 3093 is connected to the first main oil passage 301. The oil collector 3091 and the oil filter 3093 deliver lubricating oil via the oil pump 3092. In this embodiment, the lubricating oil in the oil pan 5 is collected by the oil collector 3091 and then delivered to the oil filter 3093 by the oil pump 3092. The oil filter 3093 delivers the lubricating oil from the oil pump 3092 to the first main oil passage 301, thus forming a loop of lubricating oil within the engine 100. This improves the lubrication effect on the internal parts of the engine 100, thereby extending the service life of the engine 100. Specifically, the oil filter 3093 removes impurities such as dust, metal particles, carbon deposits, and soot particles from the lubricating oil, maintaining its cleanliness, extending its service life, and thus improving the service life of the engine 100.

[0052] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An engine, The engine includes at least: First working mode and second working mode; The engine also includes: A crankcase, the crankcase comprising a first housing and a second housing; A crankshaft connecting rod mechanism, wherein the crankshaft connecting rod mechanism is at least partially disposed in the first housing; A transmission mechanism, which is at least partially disposed in the second housing and includes a gearbox gear and a gearbox journal; When the engine is in the first operating mode, the gearbox gears are in a low-speed operating state; When the engine is in the second operating mode, the gearbox gears are in a high-speed operating state; The rotational speed in the high-speed operating state is greater than the rotational speed in the low-speed operating state; Its features are, The engine also includes: The lubrication system includes a first state in which the first housing and the second housing can be disconnected by the lubrication system and a second state in which they can be connected by the lubrication system. An oil storage mechanism is provided on the first housing and is used to store the lubricating oil in the first housing; The lubrication system includes: The first main oil passage is used to transport lubricating oil; The first transmission oil passage is connected to the first main oil passage and is used to lubricate the transmission gears; An oil delivery mechanism is provided between the oil storage mechanism and the first gearbox oil passage, and the oil delivery mechanism is a scavenging pump. The second transmission oil passage is connected to the first main oil passage and is used to transport lubricating oil from the first main oil passage to the second transmission oil passage so that the lubricating oil is delivered to the transmission journal; When the engine is in the first operating mode, the oil delivery mechanism is not working, and lubricating oil cannot be delivered from the first housing to the first transmission oil passage through the oil delivery mechanism; when the engine is in the second operating mode, the transmission gears are in the high-speed running state, the oil delivery mechanism connects the oil storage mechanism and the first transmission oil passage, and is used to deliver lubricating oil from the oil storage mechanism to the first transmission oil passage, and the first transmission oil passage is used to deliver lubricating oil from the first housing to the second housing, and to deliver lubricating oil to the transmission gears.

2. An engine according to claim 1, characterized in that, When the engine is in the first operating mode, the first housing and the second housing are in the first state; when the engine is in the second operating mode, the first housing and the second housing are in the second state.

3. An engine according to claim 1, characterized in that, The lubrication system also includes: The second main oil passage is located between the first main oil passage and the first transmission oil passage, and the second main oil passage connects the first main oil passage and the first transmission oil passage.

4. An engine according to claim 3, characterized in that, The second main oil passage includes a first secondary oil passage and a second secondary oil passage; the first secondary oil passage connects the first main oil passage and the second secondary oil passage; the second secondary oil passage connects the first secondary oil passage and the first gearbox oil passage.

5. An engine according to claim 3, characterized in that, The second main oil passage is used to transport lubricating oil from the first main oil passage to the first housing, so that the lubricating oil is transported from the first housing to the first gearbox oil passage.

6. An engine according to claim 1, characterized in that, The crankcase is provided with an oil inlet and an oil outlet. The oil inlet is provided on the first housing and is connected to the oil storage mechanism, used to transport lubricating oil from the oil storage mechanism to the oil delivery mechanism; The oil outlet is at least partially disposed on the first housing and at least partially disposed on the second housing, and the oil outlet is disposed between the oil delivery mechanism and the first gearbox oil passage; When the engine is in the second operating mode, the oil delivery mechanism delivers lubricating oil to the first gearbox oil passage through the oil outlet.

7. An engine according to claim 3, characterized in that, The lubrication system also includes: The first oil chamber is disposed between the first main oil passage and the second main oil passage, and is used to store the lubricating oil in the first main oil passage and transport it to the second main oil passage. The second oil chamber is disposed between the first main oil passage and the second transmission oil passage, and is used to store the lubricating oil in the first main oil passage and transport it to the second transmission oil passage.

8. An engine according to claim 1, characterized in that, The engine also includes an electric motor oil chamber; The lubrication system also includes: The motor oil passage is disposed between the motor oil chamber and the first main oil passage, and is used to transport the lubricating oil in the first main oil passage to the motor oil chamber.

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