A timing chain cover, engine, range extender and vehicle

Abstract

A timing chain cover, an engine, a range extender and a vehicle relate to the technical field of engines, and are used to effectively reduce the noise influence of the timing chain cover on the front end of the engine. The timing chain cover comprises a timing chain cover body, the timing chain cover body comprises a first surface, the periphery of the first surface is provided with a plurality of first mounting holes, the inside of the first surface is provided with a second mounting hole and at least one supporting column, the plurality of first mounting holes and the second mounting hole are used to cooperate with the cylinder barrel of the engine to form a sealed cavity, the sealed cavity is filled with oil and a moving part is placed in the sealed cavity, and the at least one supporting column passes through an area outside the moving part. By increasing the at least one supporting column in the timing chain cover body, the vibration amplitude of the timing chain cover body can be reduced, so that the NVH of the timing chain cover is reduced, and meanwhile, the hollow rate of the inside of the timing chain cover body is reduced, so that the noise influence of the timing chain cover on the front end of the engine is reduced.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to the field of engine timing systems, and proposes a timing chain cover, an engine, a range extender, and a vehicle. Background Technology

[0002] During vehicle operation, a certain amount of noise is usually present inside the car, affecting passenger comfort and well-being. Besides wind and tire noise, the most significant source of interior noise is engine noise, part of which originates from the friction and impact of moving parts in the timing system. To reduce engine noise, the timing chain cover needs to seal the timing system. Better sealing results in better noise isolation and better meets noise, vibration, and harshness (NVH) requirements.

[0003] Traditional timing chain covers typically have a large empty space, which amplifies noise and fails to meet NVH (Noise, Vibration, and Harshness) requirements. To address this, the industry has offered several solutions, but these all involve adding recesses, bumps, or reinforcing ribs to the empty space of the timing chain cover to reduce its flatness and thus its noise impact. However, these solutions are difficult to manufacture, costly, and have limited NVH optimization effects, failing to effectively reduce the noise impact of the timing chain cover on the engine front.

[0004] In summary, how to effectively reduce the noise impact of the timing chain cover on the front end of the engine is a technical problem that urgently needs to be solved in the engine field. Utility Model Content

[0005] This invention provides a timing chain cover, an engine, a range extender, and a vehicle, which effectively reduces the noise impact of the timing chain cover on the front end of the engine.

[0006] In a first aspect, the present invention provides a timing chain cover, including a timing chain cover body. The timing chain cover body includes a first surface, a plurality of first mounting holes are provided around the periphery of the first surface, a second mounting hole and at least one support column are provided inside the first surface, the plurality of first mounting holes and the second mounting holes are used to cooperate with the cylinder of the engine to form a sealed cavity, the sealed cavity is filled with oil and a moving part is placed inside, and at least one support column passes through the area outside the moving part.

[0007] Based on the timing chain cover described above, by adding at least one support post within the timing chain cover body, the vibration amplitude of the timing chain cover body can be reduced, thereby lowering the NVH (noise, vibration, and harshness) of the timing chain cover. Simultaneously, the internal void ratio of the timing chain cover body can also be reduced, thus minimizing the noise impact of the timing chain cover on the engine front end. Furthermore, at least one support post can also support the fit between the timing chain cover body and the cylinder, improving stability.

[0008] In one possible design, the interior of the first face is provided with multiple support columns, which are distributed in the middle area of ​​the first face.

[0009] Based on the above design, by installing multiple support columns in the middle area of ​​the timing chain cover body, all support columns can be evenly distributed in the middle position of the installation support point, and the force on each support column is relatively uniform, which can achieve stability in support and noise reduction.

[0010] In one possible design, when multiple support columns are set, the multiple support columns are not collinear and are not circular.

[0011] Based on the above design, the multiple support columns are distributed among each other, which can improve the shear resistance and thus reduce the internal stress.

[0012] In one possible design, when multiple support columns are used, the spacing between adjacent support columns needs to be set within a reasonable range, which can be determined based on the actual layout in the scenario. For example, based on the timing chain guard dimensions provided by relevant technologies, a reasonable range can be no less than 10mm and no more than 15mm. Based on this range, the spacing between any two adjacent support columns, such as the spacing between the centerlines of the support columns, needs to be controlled within the range of 10mm to 15mm.

[0013] Based on the above design, the spacing between any two adjacent support columns can be within a reasonable range, each support column can have its own area to support, and the support columns will not be too far apart, which can achieve the effect of joint support and even noise reduction.

[0014] In one possible design, when multiple support columns are provided, multiple first mounting holes are distributed along the two edges of the first surface in a first direction, and multiple support columns are distributed along the two sides of the second mounting holes in a second direction, perpendicular to the first direction. For example, viewed from the direction directly opposite the first surface, if multiple first mounting holes are distributed on the left and right sides of the first surface and the second mounting holes are located in the middle area of ​​the first surface, then multiple support columns are distributed on the upper and lower sides of the second mounting holes. Alternatively, conversely, if multiple first mounting holes are distributed on the upper and lower sides of the first surface and the second mounting holes are located in the middle area of ​​the first surface, then multiple support columns are distributed on the left and right sides of the second mounting holes.

[0015] Based on the above design, multiple first mounting holes and multiple support columns can cover two vertical directions on the first surface. In this way, after the timing chain cover and cylinder are fitted together, the entire mating surface can have a certain supporting and fixing effect, and the mating effect is good.

[0016] It should be noted that this utility model does not impose specific restrictions on the shape of the support column. For example, it can be a cylindrical column, a square column, a rectangular column, an elliptical column, a polygonal column, an irregularly shaped column, etc., as long as it is a columnar body and can achieve the supporting function for the timing chain cover.

[0017] Furthermore, when setting multiple support columns, this utility model does not impose specific restrictions on whether the different support columns have the same shape. Different support columns can have the same shape or different shapes. For example, all support columns can be cylindrical, or some support columns can be cylindrical and the remaining support columns can be rectangular, or some support columns can be cylindrical, some support columns can be elliptical and the remaining support columns can be square, and so on, without further listing.

[0018] In one possible design, the dimensions of the support column are smaller than the set dimensions. For example, when the support column is cylindrical, its diameter can be configured between Φ3 and Φ6. Here, Φ refers to millimeters (mm), and Φ3 to Φ6 is equivalent to 3mm to 6mm.

[0019] Based on the above design, the small-sized support column itself is smaller in size and occupies less space, making it easier to avoid the chain area, and can also achieve the effect of supporting and reducing noise, while also reducing costs and structural complexity.

[0020] In one example of the design above, the cross-sectional dimensions of the support column are related to its height, showing an approximately positive correlation overall. The taller the support column, the larger its cross-sectional dimensions; conversely, the shorter the support column, the smaller its cross-sectional dimensions.

[0021] Based on the above examples, adopting a shape design where height is positively correlated with cross-sectional dimensions not only makes the support column more aesthetically pleasing but also achieves the dual benefits of structural stability and cost reduction. When the support column is shorter, its structural stability is better, and using thinner support columns can reduce material usage, thereby lowering manufacturing costs. Conversely, when the support column is taller, its structural stability is relatively poorer, and using thicker support columns can provide more stable support for the timing chain cover.

[0022] In a further example, taking a cylindrical support column as an example, the cross-sectional dimension of the support column is the diameter of the cylinder. The relationship between the diameter and the height of the cylinder can be presented as follows: if the height of the cylinder is less than 10mm, the diameter of the cylinder is 3mm; if the height of the cylinder is greater than or equal to 10mm and less than 20mm, the diameter of the cylinder is 4mm; if the height of the cylinder is greater than or equal to 20mm and less than 30mm, the diameter of the cylinder is 5mm; and if the height of the cylinder is greater than 30mm, the diameter of the cylinder is 6mm.

[0023] Based on the above example, this is equivalent to dividing the height parameter of the support column into multiple intervals. When the actual height of the support column meets a certain interval, a fixed diameter is configured for the support column. Using this interval correspondence allows for better reference to the diameter design of the support column, and it also has a certain tolerance for manufacturing errors and process errors. The requirements for manufacturing precision are relatively less stringent, which can reduce the manufacturing difficulty and maintain the aesthetics of the overall structure.

[0024] It should be noted that the above content only presents one possible relationship between the height and diameter of the support column. However, the relationship used in actual scenarios can also be obtained through simulation testing, designed by those skilled in the art based on experience, or customized according to user needs, etc. This utility model does not impose specific limitations in this regard.

[0025] In one possible design, the distance between the support column and each of the multiple first mounting holes is greater than a first predetermined distance. Here, the first predetermined distance can be configured as the maximum distance that does not affect the mounting torque corresponding to the first mounting hole. The first predetermined distance can be obtained through simulation testing, configured by those skilled in the art based on experience, or obtained through theoretical analysis based on the dimensions and structural characteristics of each component in the timing chain cover; no specific limitation is made. For example, based on the timing chain cover dimensions provided in related technologies, and combined with the bolt mounting torque corresponding to the first mounting hole, the first predetermined distance can be set to 15mm.

[0026] Based on the above design, by controlling the distance between the support column and the edge of the mounting hole surface to be greater than the first set distance, it is possible to avoid the support column affecting the installation torque of the bolts at the mounting hole surface. This ensures that the timing chain cover and the cylinder are always stably fitted while reducing the noise of the timing chain cover.

[0027] In one possible design, the periphery of the first surface of the timing chain cover body protrudes outward to form an edge, and at least one support post is flush with the edge in height. Optionally, at least one additional boss needs to be added to the cylinder that mates with the timing chain cover body. The at least one boss corresponds one-to-one with the at least one support post, and the at least one boss is flush with the edge of the cylinder in height. In this way, after the timing chain cover body and the cylinder are installed together, at least one boss and at least one support post will come into contact with each other, forming at least one stable support structure.

[0028] Based on the above design, the support column is flush with the edge of the timing chain cover body, neither protruding from the outside of the timing chain cover body nor retracting into the shell of the timing chain cover body. This reduces the probability of wear and makes it easier to manufacture. For example, the support column and the timing chain cover body can be manufactured as a single piece, reducing manufacturing difficulty while maintaining high structural stability.

[0029] It should be noted that in some other possible designs, at least one support column may not be flush with the edge in height; for example, it may be higher or lower than the edge. However, when designing the cylinder to which it is fitted, the height of at least one boss added to the cylinder needs to be shortened or lengthened accordingly so that at least one support column can contact at least one boss in the cylinder to form a stable support structure.

[0030] In one possible design, the timing chain cover body also includes a first positioning hole, which is mounted on the cylinder by a positioning pin, and the diameter of the first positioning hole is smaller than the diameter of either the first mounting hole or the second mounting hole.

[0031] Based on the above design, the timing chain cover body and the cylinder can be accurately positioned by using a small inner diameter positioning hole, so that the timing chain cover body and the cylinder can have the expected relative position after they are put together.

[0032] In one example of the above design, multiple first mounting holes and second mounting holes are bolt holes, and the first positioning hole is a pin hole.

[0033] Based on the above design, bolt holes and pin holes are relatively easy to manufacture, and each can achieve the functions of fixing and positioning, with low cost and low manufacturing difficulty.

[0034] Secondly, this utility model provides an engine, including a cylinder and a timing chain cover as described in the first aspect or any of the designs or examples of the first aspect. The cylinder includes a second surface, with a plurality of third mounting holes around its periphery and a fourth mounting hole inside the second surface. The plurality of third mounting holes cooperate with a plurality of first mounting holes of the timing chain cover, and the fourth mounting hole cooperates with a second mounting hole of the timing chain cover, so that the cylinder and the timing chain cover form a sealed cavity, and the sealed cavity is filled with oil.

[0035] Based on the above engine, the cylinder and timing chain cover can be fastened together to form a sealed cavity. This sealed cavity is installed and fitted together with multiple mounting holes on the periphery and central area of ​​the timing chain cover, which not only achieves superior sealing performance but also provides a certain degree of structural strength.

[0036] In one possible design, the multiple third mounting holes are bolted together with the multiple first mounting holes, and the fourth mounting hole is bolted together with the second mounting hole.

[0037] Based on the above design, the cylinder and timing chain cover can be fixed together by bolts to the periphery and center area. The bolt fitting method is easy to implement, has low cost, is easy to manufacture, and has good stability.

[0038] In one possible design, the cylinder also includes a second positioning hole, which engages with the first positioning hole of the timing chain cover via a positioning pin.

[0039] Based on the above design, the cylinder and timing chain cover can also be precisely positioned using locating pins, making their matching position more accurate.

[0040] In one possible design, the interior of the second side is provided with at least one boss, which is fitted together with at least one support post of the timing chain cover.

[0041] Based on the above design, by setting a boss in the cylinder corresponding to the support column of the timing chain cover, the boss can be aligned with the support column after the cylinder and timing chain cover are fastened together, thus providing support for the sealed cavity formed by the cylinder and timing chain cover, enabling the sealed cavity to have a certain compressive and tensile strength.

[0042] In one possible design, the engine also includes moving parts that are fixed within a sealed cavity and lubricated by oil.

[0043] Based on the above design, the moving parts of the engine can be sealed inside the cavity so that the moving parts can be lubricated by oil during the movement, reducing frictional loss between the moving parts. At the same time, the noise generated during the movement can be sealed inside the cavity, thereby reducing the noise at the front end of the engine.

[0044] In one example of the above design, the moving parts include a timing chain, a crankshaft timing sprocket, and a camshaft gear. The crankshaft timing sprocket and the camshaft gear are both fixed in a sealed cavity. The timing chain engages with the crankshaft timing sprocket and the camshaft gear respectively to achieve the consistency of rotation of the crankshaft timing sprocket and the camshaft gear.

[0045] Based on the above examples, the timing chain can be used to achieve consistent movement of different wheels, thereby ensuring the normal operation of the moving parts of the timing system.

[0046] In one possible design, the engine also includes an oil pump connected to a sealed cavity via a pipe. The oil pump is used to pressurize the oil to deliver the oil to the moving parts within the sealed cavity.

[0047] Based on the above design, an oil pump can be used to move the oil in the sealed cavity and enter the moving parts to lubricate them.

[0048] Thirdly, this utility model provides a range extender, including a timing chain cover as described in the first aspect or any design or example of the first aspect, or including an engine as described in the second aspect or any design or example of the second aspect.

[0049] For example, taking an engine as an example, the input end of the engine is connected to the fuel tank, and the output end of the engine is connected to the power unit. The engine is used to convert the chemical energy of the fuel in the fuel tank into kinetic energy and provide it to the power unit.

[0050] In the above content, the kinetic energy converted by the engine is provided to the power components in the following two ways:

[0051] In the first method, the engine directly provides the converted kinetic energy to the power components.

[0052] In the second option, the range extender also includes a generator. The kinetic energy converted from the engine is used to drive the generator to generate electricity, which is then used by the power components.

[0053] Based on this, the power unit can be fuel-powered and / or electric-driven, thus the range extender can be applied to various scenarios.

[0054] Optionally, the aforementioned power components can be any type of element requiring power. When the vehicle is fuel-powered, such as a gasoline-powered car, the power components can be a gearbox and transmission mechanism. The kinetic energy converted by the engine is provided to the wheels via the gearbox and transmission mechanism to drive the gasoline-powered car. When the vehicle is electrically driven, such as a pure electric vehicle, the power components can be a power battery and a motor. The kinetic energy converted by the engine is first provided to a generator to generate electricity, and the electrical energy generated by the generator is then provided to the motor via the power battery to drive the wheels and propel the pure electric vehicle. Of course, the vehicle may also be a hybrid vehicle, such as a hybrid electric vehicle. In this case, both power supply methods are feasible.

[0055] Fourthly, this utility model provides a vehicle that includes a timing chain cover as described in the first aspect or any of the designs or examples of the first aspect, or includes an engine as described in the second aspect or any of the designs or examples of the second aspect, or includes a range extender as described in the third aspect or any of the designs or examples of the third aspect.

[0056] The technical effects that any of the designs in the second to fourth aspects above can achieve can be found in the effects of the various designs and examples in the first aspect above, and will not be repeated here. Attached Figure Description

[0057] Figure 1 An exemplary schematic diagram of a conventional timing chain cover is shown;

[0058] Figure 2 Exemplary schematic diagrams show two types of timing chain covers provided by related technologies;

[0059] Figure 3 An exemplary schematic diagram of a timing chain cover provided in an embodiment of the present invention is shown;

[0060] Figure 4 This illustration shows a schematic diagram of the fit between a timing chain cover and a cylinder according to an embodiment of the present invention.

[0061] Figure 5 This illustration shows another possible configuration of the timing chain cover and cylinder provided in an embodiment of the present invention.

[0062] Figure 6 An exemplary schematic diagram of the internal structure of a cylinder provided in an embodiment of the present invention is shown;

[0063] Figure 7 An exemplary schematic diagram of an engine provided by an embodiment of the present invention is shown;

[0064] Figure 8An exemplary schematic diagram of the structure of an internal moving part of an engine provided by an embodiment of the present invention is shown;

[0065] Figure 9a This illustration shows a schematic diagram of the structure of a range extender and a vehicle provided in an embodiment of the present invention;

[0066] Figure 9b This illustration shows a schematic diagram of another range extender and vehicle provided in an embodiment of the present invention;

[0067] Figure 10 This is an exemplary schematic diagram showing the presentation format of a noise test result provided by an embodiment of the present invention. Detailed Implementation

[0068] The solutions provided by the embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0069] The following explanations cover some of the terms used in the embodiments of this utility model. It should be noted that these explanations are for the convenience of those skilled in the art and do not constitute a limitation on the scope of protection claimed by the embodiments of this utility model.

[0070] I. Engine front end and engine rear end.

[0071] A car engine has six sides, with the end containing the flywheel called the rear end, which is the power output end. Behind the power output end are components such as shock absorbers, torque converters, and transmissions. Opposite to the rear end is the front end, which typically contains accessories such as an alternator, water pump, air conditioning compressor, and fan, often connected by belts. Simply put, the end of the crankshaft with the pulley is the front end of the engine, and the end with the flywheel is the rear end.

[0072] II. Automotive timing system.

[0073] The valve timing system is the core component of the internal combustion engine's valve train. It can precisely control the timing of valve opening and closing, coordinating the valve and piston movement. Through the coordinated operation of components such as the camshaft and crankshaft, it ensures that the intake and exhaust processes are completed at specific piston stroke stages, directly affecting engine efficiency and power output.

[0074] The preceding text introduced some terms used in the embodiments of this utility model. The following text introduces possible application scenarios of the embodiments of this utility model.

[0075] It should be understood that the application scenarios described below are merely examples, and the timing chain cover provided in this utility model embodiment can also be applied to other possible scenarios, and is not limited to the scenarios exemplified below. Furthermore, the application scenarios described in this utility model embodiment are for the purpose of more clearly illustrating the technical solutions of this utility model embodiment, and do not constitute a limitation on the technical solutions provided by this utility model embodiment.

[0076] In one possible application scenario, the timing chain cover provided in this embodiment of the present invention can be integrated into a vehicle, especially a vehicle with an engine. Such vehicles may include, but are not limited to, vehicles, ships, airplanes, fighter jets, trains, subways, high-speed trains or automated guided vehicles, excavators, cranes, water trucks, etc.

[0077] For example, taking the timing chain cover as an example of a vehicle, the vehicle can be any type of vehicle, including but not limited to: gasoline vehicles, pure electric vehicles (pure electric vehicle / battery electric vehicle, pureEV / battery EV), hybrid electric vehicles (HEV), range-extended electric vehicles (REEV), plug-in hybrid electric vehicles (PHEV), or other new energy vehicles (NEV), etc.

[0078] Nowadays, with the increasing popularity of vehicles, users are placing more and more demands on them, making driving comfort increasingly important. In particular, with the improvement of vehicle power performance, engine noise has also increased, which has a negative impact on the low-noise riding experience and low NVH requirements of passengers in the cabin, necessitating the implementation of measures to reduce engine noise.

[0079] A portion of engine noise originates from the friction and impact of moving parts in the timing system. Therefore, the timing chain cover is crucial for sealing these moving parts. Only when the timing chain cover is strong, vibrates little during engine operation, and does not deform significantly, can it completely seal the moving parts of the timing system, effectively isolating the noise from friction and impact and ensuring the engine's NVH requirements are met.

[0080] For the structure of a traditional timing chain cover, please refer to [link / reference]. Figure 1 , Figure 1 Image (A) shows the three-dimensional structure of a conventional timing chain cover 100. Figure 1 Image (B) shows the planar structure of a conventional timing chain guard 100. Combined with... Figure 1Looking at (A) and (B) together, the conventional timing chain cover 100 has multiple bolt holes 101 in its periphery and middle area. The multiple bolt holes 101 are fixed to the cylinder of the engine by bolts, forming a sealed cavity with the cylinder. The sealed cavity is filled with oil and the timing system moving parts are placed therein to achieve sealing of the timing system moving parts.

[0081] However, as Figure 1 As shown, the conventional timing chain cover 100 has only one bolt hole 101 in the middle area. Therefore, it has a very large empty space, which has a certain amplification effect on noise, resulting in high noise at the front of the engine, which cannot meet the increasingly demanding low NVH requirements.

[0082] In response to this, related technologies have provided some solutions, but these solutions either involve adding recesses and protrusions to the middle area of ​​the timing chain guard, such as... Figure 2 The reinforcing protrusions 201, 202, and 203 shown in Figure (A) are examples of reinforcements, such as the reinforcing protrusions 201, 202, and 203, or the addition of reinforcing ribs and bosses in the middle area of ​​the timing chain cover. Figure 2 The reinforcing ribs 211 and bosses 212 shown in (B) are examples of this, or other similar structures are added to the middle area of ​​the timing chain cover.

[0083] The solutions offered by related technologies all involve reducing the flatness of the timing chain cover by adding structures such as recesses, protrusions, or reinforcing ribs to improve its structural rigidity and thus reduce vibration. However, their effect on NVH optimization is limited, resulting in still relatively high front-end radiated noise in existing engines, failing to effectively reduce the noise impact of the timing chain cover. Furthermore, structures such as recesses, protrusions, or reinforcing ribs are relatively complex, difficult to manufacture, and costly, hindering their practicality in the field of timing chain covers.

[0084] In view of this, this utility model provides a novel timing chain cover structure. This structure adds at least one support column to the timing chain cover body to reduce the vibration amplitude of the timing chain cover shell, thereby reducing the NVH (noise, vibration, and harshness) of the timing chain cover. Simultaneously, the presence of at least one support column also reduces the empty shell ratio of the timing chain cover, further achieving the effect of reducing engine front-end noise. Furthermore, the structure of at least one support column is simple, easy and convenient to manufacture, and can be integrally molded with the timing chain cover body, reducing the overall manufacturing difficulty of the timing chain cover, lowering costs, and thus improving its applicability in the field of timing chain covers.

[0085] The following is in conjunction with the appendix Figure 3 To be continued Figure 10 This paper provides a detailed description of the timing chain cover and related devices proposed in the embodiments of this utility model.

[0086] Please see Figure 3 This diagram illustrates the structure of a timing chain cover according to an embodiment of the present invention. Figure 3 Image (A) shows the three-dimensional structure of the timing chain cover. Figure 3 The diagram in (B) shows the planar structure of the timing chain cover. Figure 3 The structure shown in (B) can be understood as being derived from... Figure 3 The view shown in (A) is taken from the outside of the first surface S1.

[0087] Combination Figure 3 Looking at (A) and (B) together, the timing chain cover 300 includes a timing chain cover body 310, which can be considered as the shell of the timing chain cover 300. The timing chain cover body 310 includes a first surface S1, and a plurality of first mounting holes K1 are provided around the periphery of the first surface S1. The interior of the first surface S1 is provided with a second mounting hole K2 and at least one support post 311 to 315. The plurality of first mounting holes K1 and the second mounting holes K2 are mainly used to cooperate with the cylinder of the engine to form a sealed cavity to accommodate the moving parts of the engine timing system, such as the timing chain.

[0088] For a clearer explanation of the coordination method, please refer to [link / reference]. Figure 4 This diagram illustrates the mating structure of a timing chain cover and a cylinder block according to an embodiment of the present invention. Figure 4 In the diagram showing the mating structure, the engine cylinder 400 mainly consists of two parts: the cylinder head 410 and the cylinder block 420. The cylinder head 410 and the cylinder block 420 are fastened together to form the cylinder 400. The left side of the cylinder 400 is open, and the right side of the timing chain cover body 310 is also open. The left side of the cylinder 400 and the right side of the timing chain cover body 310 are fastened together to form a cavity.

[0089] Optionally, to achieve a secure connection between the cylinder 400 and the timing chain cover body 310, such as Figure 4 As shown, the cylinder 400 includes a second surface (the left side of the diagram), the periphery of which is provided with multiple third mounting holes K3, and the interior of which is provided with a fourth mounting hole (…). Figure 4 (Not shown in the image). After the cylinder 400 is assembled with the timing chain cover body 310, the left side of the cylinder 400 and the right side of the timing chain cover body 310 (i.e., ...) Figure 3 The first surface S1 shown is fastened together, and the third mounting hole K3 on the periphery of the left side of the cylinder 400 is fastened to the multiple first mounting holes K1 on the periphery of the right side of the timing chain cover body 310 (including...). Figure 4 K shown 11 and K 12The cylinder 400 and the timing chain cover body 310 are fitted together, with the fourth mounting hole inside the left side of the cylinder 400 fitting into the second mounting hole K2 inside the right side of the timing chain cover body 310. In this fitting configuration, the cylinder 400 and the timing chain cover body 310 are securely connected together and interlocked into a sealed cavity.

[0090] The first mounting hole K1, the second mounting hole K2, the third mounting hole K3, and the fourth mounting hole can be any type of mounting hole, including but not limited to: bolt holes, round holes, square holes, elliptical holes, oblong holes, countersunk holes, through holes, blind holes, etc.

[0091] For example, taking a case where the first mounting hole K1, the second mounting hole K2, the third mounting hole K3, and the fourth mounting hole are all bolt holes, when assembling the cylinder 400 with the timing chain cover body 310, bolts need to be passed through each of the first mounting holes K1 and the corresponding third mounting holes K3, and bolts need to be passed through the second mounting holes K2 and the fourth mounting holes to fix the cylinder 400 and the timing chain cover body 310 together. Of course, if other types of mounting holes are used, then the bolts need to be replaced with other connection structures, which is not limited.

[0092] It is understandable that the two mounting holes that cooperate with each other need to be of the same type. For example, each first mounting hole K1 and the corresponding third mounting hole K3 are the same type of mounting hole, and the second mounting hole K2 and the fourth mounting hole are the same type of mounting hole. However, this utility model embodiment does not make specific restrictions on whether different first mounting holes K1, or first mounting holes K1 and second mounting holes K2 are of the same type of mounting holes.

[0093] Optionally, considering that the bolt hole diameter is usually relatively large, and that a large-diameter bolt hole can only fasten the timing chain cover body 310 and the cylinder 400 to a relatively inaccurate position, therefore, in some examples, in order to achieve the accuracy of the relative position of the timing chain cover body 310 and the cylinder 400, such as... Figure 5 As shown in (A) and (B), a first positioning hole K may also be provided on the periphery or inside of the timing chain cover body 310. 51 A second positioning hole K may also be provided on the periphery or inside of the cylinder 400. 52 Furthermore, the first positioning hole K 51 With the second positioning hole K 52 The aperture is smaller than that of the first mounting hole K1 and the second mounting hole K2. After the timing chain cover body 310 and the cylinder 400 are fastened together, the first positioning hole K... 51 With the second positioning hole K 52 The overlapping and positioning structural components pass through the first positioning hole K. 51 With the second positioning hole K 52The timing chain cover body 310 is fixed together with the cylinder 400. Since the diameter of the positioning hole is smaller than that of the mounting hole, the positioning hole and the positioning structure can achieve a more accurate positioning effect than the mounting hole, which can help to position the relative position of the timing chain cover body 310 and the cylinder 400.

[0094] In the above description, the positioning structural component can be any type of structural component that can pass through the two positioning holes, including but not limited to: positioning pins, positioning shafts, positioning bolts, positioning support nails, positioning support plates, etc., without specific restrictions.

[0095] For example, when the positioning structure is a positioning pin, the first positioning hole K 51 Second positioning hole K 52 That is, the pin hole.

[0096] It should be noted that this embodiment of the present invention does not limit the number of holes provided in the timing chain cover 300, including the number of first mounting holes K1, the number of second mounting holes K2, and the number of first positioning holes K. 51 The quantity. For example. Figures 3 to 5 The timing chain cover 300 has four first holes K1 on each side, one second hole K2 inside, and one first positioning hole K on the edge. 51 For example, in the actual timing chain cover 300, each side can also have any number of first holes K1, either more or less than four; the interior can also have multiple second holes K2; and the edge can also have multiple first positioning holes K. 51 For example, three first holes K1, two second holes K2, and two first positioning holes K 51 Or 5 first holes K1, 3 second holes and 4 first positioning holes K 51 And so on, without listing them all.

[0097] Furthermore, this embodiment of the invention does not limit the number of support posts provided in the timing chain cover 300. For example, Figures 3 to 5 The example shown here has 6 support columns 311 to 315. However, in the actual timing chain cover 300, there may be only 1 support column, or 2 support columns, or any number of support columns, 3 or more. These will not be listed one by one.

[0098] To facilitate further introduction of the relevant structural features of the support columns, the following text will use the term "support column". Figures 3-5 The six support columns shown are used as an example for explanation, but the same content applies to timing chain guards with only one support column, or with two or more support columns of any number.

[0099] Combination Figures 3 to 5Let's take a look. After the timing chain cover body 310 and the cylinder 400 are put together to form a sealed cavity, the sealed cavity needs to be filled with oil and placed with moving parts, such as timing chains. The support columns 311-315 pass through the area outside the moving parts to avoid affecting the normal operation of the moving parts.

[0100] Optionally, support columns 311-315 can be used to support the fit between the timing chain cover body 310 and the cylinder 400; in other words, they can provide support for the internal space of the sealed cavity. Figures 3 to 5 In the timing chain cover 310 structure shown, the periphery of the first surface S1 protrudes outward to form an edge, and the support columns 311-315 are flush with the edge in height. With this structural configuration, the support columns 311-315 are at the same height as the edge of the timing chain cover body 310, neither protruding outside the timing chain cover body 310 nor retracting into the shell of the timing chain cover body 310. Therefore, the support columns 311-315 and the timing chain cover body 310 are integrally molded, resulting in a lower manufacturing difficulty.

[0101] For example, in a structural configuration where 311-315 are at the same height as the edge of the timing chain cover body 310, the support columns 311-315 alone cannot provide support for the sealed cavity. Therefore, as Figure 6 As shown, additional bosses 431, 432, 433, 434, and 435 are required inside the cylinder 400. Bosses 431 to 435 correspond one-to-one with support columns 311 to 315, and the height of bosses 431 to 435 is flush with the edge of the cylinder 400. Thus, after the timing chain cover body 310 is fastened to the cylinder 400, the edge of the timing chain cover body 310 contacts the edge of the cylinder 400. Consequently, the support columns 311 to 315, which are flush with the edge of the timing chain cover body 310, and the bosses 431 to 435, which are flush with the edge of the cylinder 400, also contact each other, forming multiple stable support structures.

[0102] Based on multiple stable support structures, when the moving parts within the sealed cavity vibrate due to operation, the vibration is first transmitted to the surfaces opposite the timing chain cover body 310 and the cylinder 400. The support columns 311-315 and the bosses 431-435 are precisely located on these opposite surfaces. Therefore, the support columns 311-315 can reduce the vibration amplitude of the timing chain cover body 310, while the bosses 431-435 can reduce the vibration amplitude of the cylinder 400. The combination of the support columns 311-315 and the bosses 431-435 achieves a good noise reduction effect on the engine front end, reducing engine NVH (noise, vibration, and harshness). Furthermore, since the support columns 311-315 are located inside the timing chain cover body 310, their presence also reduces the internal void ratio of the timing chain cover body 310, further reducing engine front-end noise.

[0103] It should be noted that the embodiments of this utility model do not limit the structure of the boss; for example, it can be... Figure 6 The rectangular block structure shown can also be the same shape as the supporting column in contact, such as a cylindrical structure, an elliptical column structure, etc., which will not be listed one by one.

[0104] Additionally, setting the support posts 311-315 to be flush with the edge of the timing chain cover body 310 is just one example. In other examples, the support posts 311-315 may not be flush with the edge of the timing chain cover body 310; for example, they may be higher or lower than the edge height. However, when designing the mating cylinder 400, the height of the bosses 431-435 added to the cylinder 400 needs to be shortened or lengthened accordingly so that after the timing chain cover body 310 and the cylinder 400 are fastened together, the support posts 311-315 and the bosses 431-435 can contact each other to form a stable support structure.

[0105] Optionally, please continue reading Figure 3 When multiple support columns 311 to 315 are included, at least one of the following arrangement principles can be adopted:

[0106] The first arrangement principle is that multiple support columns 311-315 are distributed in a dispersed manner in the middle area of ​​the first surface. For example, the support columns 311-315 can be arranged as close as possible to the middle of the first mounting holes on both sides, such as the first mounting hole K on the left side. 11 With the first mounting hole K on the right 12 The central position. This layout allows all support columns to be evenly distributed in the center of the installation support points, resulting in relatively uniform stress on each support column and achieving stability in terms of support and noise reduction;

[0107] The second arrangement principle is to avoid multiple support columns 311-315 being collinear or circular. In other words, the multiple support columns 311-315 should not be on the same straight line or on the same circle. This arrangement principle applies to situations with at least three support columns. By designing at least three support columns to be neither collinear nor circular, the shear resistance of the multiple support columns can be improved, internal stress can be reduced, and a better support effect can be achieved.

[0108] The third arrangement principle is that the distance between each of the multiple support columns 311-315 and the multiple first mounting holes K1 is greater than a first predetermined distance. Here, the first predetermined distance can be configured as the maximum distance that does not affect the mounting torque corresponding to the first mounting hole K1. The first predetermined distance can be obtained through simulation testing, configured by those skilled in the art based on experience, or obtained through theoretical analysis based on the dimensions and structural characteristics of each component in the timing chain cover 300, etc., without specific limitations. For example, based on the timing chain cover dimensions provided by related technologies, when the first mounting hole K1 is a bolt hole, the first predetermined distance can be set to 15mm. By ensuring that the distance between each support column and the peripheral bolt mounting hole is greater than 15mm, the support column can be prevented from affecting the mounting torque of the bolts at the mounting hole surface, thereby ensuring a stable fit between the timing chain cover body 310 and the cylinder 400.

[0109] The fourth arrangement principle is that the spacing between adjacent support columns 311-315 should be set within a reasonable range. This reasonable range can be determined based on the actual layout in the scenario. Here, the spacing between adjacent support columns can be understood as the spacing between their central axes, the spacing between their closest points, or the spacing between their average positions, etc., without specific limitations. For example, taking the spacing between the central axes of adjacent support columns as an example, based on the timing chain cover dimensions provided by relevant technologies, if the reasonable range is no less than 10mm and no more than 15mm, then the spacing between the central axes of adjacent support columns should be controlled within the range of 10mm to 15mm. Using this arrangement, each support column can have its own area to support, while the spacing between the support columns will not be too far, achieving joint support and even noise reduction effects.

[0110] Optionally, in addition to the four arrangement principles mentioned above, the multiple first mounting holes K1, second mounting holes K2, and multiple support columns 311-315 can also have some fixed positional relationships. For example, continue to refer to the above... Figure 3 When multiple first mounting holes K1 are distributed on both sides of the first surface S1 of the timing chain cover body 310 in the first direction X, as shown on the left and right sides in the figure, multiple support columns 311-315 can be distributed on both sides of the second mounting hole K2 in the second direction Y, as shown on the top and bottom sides in the figure. The second direction Y and the first direction X are perpendicular to each other. Based on this positioning method, multiple first mounting holes K1 and multiple support columns 311-315 can cover the two perpendicular directions X and Y on the first surface S1. In this way, after the timing chain cover body 310 and the cylinder 420 are installed together, the entire mating surface can have a certain supporting and fixing effect, and the installation effect of the timing chain cover body 310 and the cylinder 420 is better.

[0111] The above content introduced the arrangement of the support columns. The shape of the support columns will be explained below.

[0112] In this embodiment of the invention, the support column can be of any shape. For example, Figures 3 to 5 The example given is a cylindrical support column, but the support column can also be a square column, rectangular column, elliptical column, polygonal column, irregular column, etc., as long as it is a columnar body and can support the timing chain cover body 310 and cylinder 400.

[0113] Optionally, when multiple support columns are provided, as described above Figures 3 to 5 When there are multiple support columns 311 to 315, the shapes of the multiple support columns 311 to 315 can be the same or different. For example, the multiple support columns 311 to 315 can all be cylinders, or part of them can be cylinders and the rest can be rectangular columns, or part of them can be cylinders, part of them can be elliptical columns and the rest can be square columns, and so on, without listing them all.

[0114] Optionally, the size of the support column can be smaller than the set size. For example, when the support column is cylindrical, its diameter can be configured between Φ3 and Φ6, that is, 3mm to 6mm. With this size design, the support column will be very small, occupying very little space, making it easier to avoid moving parts of the timing system. Moreover, because of its small structure, the cost and structural complexity will be relatively low, achieving the desired noise reduction effect while reducing cost, structural complexity, and design difficulty.

[0115] Furthermore, optionally, the cross-sectional dimensions of the support column are related to its height, for example, they can be set to an approximately positive correlation. In other words, the higher the support column, the larger its cross-sectional dimensions can be designed, and the shorter the support column, the smaller its cross-sectional dimensions can be designed. Adopting a design where height and cross-sectional dimensions are approximately positively correlated can achieve both structural stability and cost reduction. For example, when the support column is relatively short, its structural stability is good, and using thinner support columns can reduce material usage, thereby reducing manufacturing costs. Conversely, when the support column is relatively tall, its structural stability is relatively poor, and using thicker support columns can provide more stable support for the timing chain cover.

[0116] For example, taking a cylindrical support column as an example, the cross-sectional dimension of the support column is the diameter of the cylinder. In a specific approximate positive correlation, the relationship between the diameter of the cylinder and the height of the cylinder can be presented as the following four levels of relationship:

[0117] For the first grade, the height of the cylinder is less than 10mm, and the diameter of the cylinder is Φ3, which is 3mm.

[0118] The second category is cylinders with a height greater than or equal to 10mm and less than 20mm, and a diameter of Φ4, which is 4mm.

[0119] The third category is cylinders with a height greater than or equal to 20mm and less than 30mm, and a diameter of Φ5, which is 5mm.

[0120] The fourth grade requires a cylinder height greater than 30mm and a cylinder diameter of Φ6, which is 6mm.

[0121] By employing the above correlation, it's equivalent to dividing the height parameter of the support column into multiple intervals. When the actual height of the support column meets a certain interval, a fixed diameter is configured for the support column. This not only allows for better reference of the support column's diameter design but also provides a certain tolerance for manufacturing and process errors, reducing the requirements for manufacturing precision and lowering the manufacturing difficulty.

[0122] It should be noted that the correlation shown above is only an example. In specific implementations, other correlations can also be used, such as a positive correlation with a fixed slope, a curved positive correlation, or a broken line positive correlation. The specific form of the correlation can be obtained through simulation testing, designed by those skilled in the art based on experience, or customized according to user needs. This utility model does not impose specific limitations in this regard.

[0123] Based on the above, a novel timing chain cover structure is provided. This structure adds support columns inside the timing chain cover body, reducing NVH (noise, vibration, and harshness) by decreasing the vibration amplitude of the timing chain cover shell. The number of support columns can be one or more. When multiple support columns are used, they are arranged in the middle of the mounting support points, avoiding collinearity or circularity. This ensures uniform stress distribution, improves shear resistance, and reduces internal stress. The spacing between the support columns depends on the arrangement to suit the specific application. The mounting position of the support columns must be greater than a certain distance from the edge of the mounting hole to avoid affecting the bolt installation torque. The top surface of the support columns is flush with the mating surface of the timing chain cover body to facilitate integral molding and reduce manufacturing difficulty.

[0124] Compared with the timing chain cover structures with added grooves, bosses and reinforcing ribs mentioned in related technologies, the timing chain cover structure provided by this utility model can not only reduce the NVH at the front end of the engine, but is also easier to manufacture and has a simpler structure, making it more widely applicable in the field of timing chain cover manufacturing.

[0125] Based on the structure and functional principle of the timing chain cover described above, this utility model embodiment can also provide an engine, such as... Figure 7 As shown. The engine 700 includes the timing chain cover 300 provided in any of the above embodiments, such as Figures 3 to 5 The timing chain cover 300 is shown in any of the attached figures.

[0126] Optionally, such as Figure 7 As shown, engine 700 may also include cylinder 400 as mentioned above, such as the one described above. Figures 4 to 6 The cylinder 400 is shown in any of the attached figures. The cylinder 400 is fastened together with the timing chain cover 300, and is installed and fitted together with the timing chain cover 310 through multiple mounting holes on the periphery and the central area mounting holes to form a sealed cavity, which is filled with oil. For details on the implementation structure and function of the cylinder 400 and the timing chain cover 300, please refer to the description in the above embodiments, which will not be repeated here.

[0127] Furthermore, optionally, such as Figure 7 As shown, a moving part 440 is also placed inside the sealed cavity. The moving part 440 refers to the moving part in the engine timing system, including but not limited to... Figure 8 The timing chain 441, crankshaft timing sprocket 442, and camshaft gear 443 are shown. The camshaft gear 443 includes an intake camshaft gear 4431 and an exhaust camshaft gear 4432. The intake camshaft gear 4431, exhaust camshaft gear 4432, and crankshaft timing sprocket 442 are all fixed to the inner wall of the cylinder 400. The timing chain 431 meshes with the intake camshaft gear 4431, exhaust camshaft gear 4432, and crankshaft timing sprocket 442 respectively to ensure the consistency of rotation of these three gears, thereby ensuring the normal operation of the timing system.

[0128] Understandably, since the entire sealed cavity is filled with oil, the oil continuously provides lubrication as the timing chain 441 drives the crankshaft timing sprocket 442 and camshaft gear 443 to rotate. This reduces frictional losses between the timing chain 441 and the crankshaft timing sprocket 442, and between the timing chain 441 and the camshaft gear 443. Simultaneously, the presence of oil also seals the noise generated during the movement of these moving parts within the sealed cavity, effectively reducing engine front-end noise.

[0129] Furthermore, optionally, considering that the oil will be lost during the lubrication process and needs to be constantly replenished, therefore, if Figure 7As shown, an oil pump 710 can also be installed in the engine 700. The oil pump 710 is located outside the sealed cavity and is connected to the sealed cavity through a pipe. After the oil pump 710 is started, it pressurizes the oil to deliver the oil to the sealed cavity, so that the oil can lubricate the moving parts 440 inside the sealed cavity.

[0130] It should be noted that, Figure 7 and Figure 8 This description only covers the components included in the engine 700 from the perspective of its front end. However, the engine 700 may contain other components, different components, or fewer components, etc., without any restrictions.

[0131] Based on the structure and functional principles of the timing chain cover or engine described above, embodiments of this utility model can also provide a range extender, such as... Figure 9a or Figure 9b As shown. The range extender 900 includes the timing chain cover provided in any of the above embodiments, such as Figures 3 to 5 The timing chain cover shown in any of the accompanying drawings. Alternatively, an engine including any of the above embodiments, such as... Figure 7 The engine shown is 700. Figure 9a and Figure 9b The latter is taken as an example, that is, the range extender 900 includes the engine 700.

[0132] Based on the structure and functional principles of the timing chain cover, engine, or range extender described above, embodiments of this utility model can also provide a means of transportation, such as... Figure 9a or Figure 9b As shown. The vehicle 1000 includes the timing chain cover provided in any of the above embodiments, such as Figures 3 to 5 The timing chain cover shown in any of the accompanying drawings. Alternatively, an engine including any of the above embodiments, such as... Figure 7 The engine 700 shown. Alternatively, it includes the range extender provided in any of the above embodiments, such as... Figure 9a or Figure 9b The range extender 900 is shown. Figure 9a and Figure 9b The latter is used as an example, that is, the vehicle 1000 includes the range extender 900.

[0133] In one possible implementation, such as Figure 9a As shown, the range extender 900 includes an engine 700 but not a generator. In this case, the input of the engine 700 is connected to the fuel tank 1010, and the output of the engine 700 is connected to the power unit 1020. The engine 700 is used to convert the chemical energy of the fuel in the fuel tank 1010 into kinetic energy and provide it to the power unit 1020.

[0134] In another possible implementation, such as Figure 9b As shown, the range extender 900 includes both an engine 700 and a generator 910. In this case, the input of the engine 700 is connected to the fuel tank 1010, the output of the engine 700 is connected to the input of the generator 910, and the output of the generator 910 is connected to the power unit 1020. The engine 700 converts the chemical energy of the fuel in the fuel tank 1010 into kinetic energy and supplies it to the generator 910 to drive the generator 910 to generate electricity. The electrical energy generated by the generator 910 is then supplied to the power unit 1010.

[0135] Optionally, whether the range extender 900 includes a generator 910 can be determined by the power type of the vehicle 1000 in which the range extender 900 is located.

[0136] When the vehicle 1000 is a fuel-powered vehicle, such as a gasoline-powered car, the range extender 900 includes the engine 700 but does not include the generator 910, and its structure is as described above. Figure 9a As shown. In this case, the power unit 1020 may include components such as a transmission and a drive mechanism. The kinetic energy converted by the engine 700 is first provided to the transmission for gear shifting, and the power after gear shifting is then transmitted to the wheels 1030 through the drive mechanism to drive the wheels 1030 to rotate, thereby propelling the fuel vehicle.

[0137] When the vehicle 1000 is an electrically driven vehicle, such as a pure electric vehicle, the range extender 900 includes both the engine 700 and the generator 910, as described above. Figure 9b As shown. In this case, the power unit 1020 may include components such as a power battery and a motor. The kinetic energy converted by the engine 700 is first supplied to the generator 910 to generate electricity. The electrical energy generated by the generator 910 is supplied to the motor via the power battery, and then the motor drives the wheels 1030 to rotate, thereby driving the pure electric vehicle.

[0138] It should be noted that under normal circumstances, the electrical energy stored in the power battery is charged from the outside by the charging gun. However, in special cases where the power battery is insufficient and there is no charging station within a short distance to charge the battery, the engine 700 and generator 910 can be used to convert the kinetic energy generated by the fuel into electrical energy to charge the power battery, so as to ensure that the vehicle can still run in certain special scenarios.

[0139] Of course, the vehicle could also be a hybrid, such as a hybrid electric vehicle. In this case, the range extender 900 also includes both the engine 700 and the generator 910, with the structure described above. Figure 9bAs shown. When the vehicle is traveling at low speeds, such as below 40 km / h, it uses only the electrical energy from the battery to power the vehicle, thus saving energy. When the vehicle is traveling at high speeds, such as above 40 km / h, the engine engages to provide additional power and improve driving performance.

[0140] For example, taking a vehicle 1000 as a hybrid electric vehicle and a range extender 900 that includes both an engine 700 and a generator 910 as an example, the following uses a specific simulation test scenario to introduce the real noise reduction effect of the novel timing chain cover structure provided by this utility model embodiment in the field of vehicle engines.

[0141] In this simulation test scenario, the vehicle is equipped with a 1.5T range extender, and the operating load is configured at 75%. Here, 1.5T refers to the engine displacement, and T stands for turbocharged, meaning that a turbocharger is installed on top of the range extender in a 1.5-liter naturally aspirated car to achieve a turbocharging effect. The operating load configuration of 75% can be understood as the vehicle's throttle opening being depressed to 75%.

[0142] A noise source was placed 1 meter away from the engine test bench, and the noise sound pressure level was measured. The test results are as follows: Figure 10 As shown. Among them, Figure 10 The diagram shows a comparison of the relationship between engine speed and noise level. The solid line represents the original sound pressure level at engine speed, which can be understood as the sound pressure level 1 meter in front of the engine without a support pillar. The dashed line represents the current sound pressure level at engine speed and noise level, which can be understood as the sound pressure level 1 meter in front of the engine with a support pillar installed. Figure 10 In the test results shown, the rotational speed can be understood as the engine speed or motor speed of the vehicle, and the unit is revolutions per minute (rpm). The noise unit is A-weighted decibel (dBA).

[0143] like Figure 10As shown, at low vehicle speeds, such as below 1500 rpm, the noise at the engine front end with the support column installed can be reduced by 1-2 dB compared to the original sound pressure level. At medium vehicle speeds, such as between 1500 rpm and 2500 rpm, the noise at the engine front end with the support column installed can be reduced by 2-3 dB compared to the original sound pressure level. At high vehicle speeds, such as above 2500 rpm, the noise at the engine front end with the support column installed can be reduced by more than 3 dB compared to the original sound pressure level. Therefore, the timing chain cover structure with support column provided in this embodiment can reduce engine front-end noise by at least 2 dB regardless of vehicle speed, demonstrating good noise reduction performance.

[0144] The above examples illustrate the application of timing chain guards to vehicles, but they can also be applied to other modes of transportation, such as ships (e.g., passenger ships, cargo ships, ferries, cruise ships, dredgers, barges, grain carriers, or coal carriers), aircraft (e.g., passenger planes, cargo planes, helicopters, agricultural machinery, forest fire prevention aircraft, aerial surveying aircraft, medical evacuation aircraft, sightseeing aircraft, or weather aircraft), subways, high-speed trains, regular trains, light rail, submarines, rockets, satellites, and space stations. Alternatively, they can also be applied to non-transportation vehicles, in any scenario where noise reduction is required, without specific limitations.

[0145] It should be noted that, unless otherwise specified or logically conflicting, the terminology and / or descriptions of the various implementation schemes introduced above are consistent and can be referenced from each other. The technical features of different implementation schemes can be combined to form new implementation schemes based on their inherent logical relationships.

[0146] In this utility model, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this utility model, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0147] In this invention, the terms "optionally" or "exemplary" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design described as "optional" or "exemplary" in this invention should not be construed as being more preferred or advantageous than other embodiments or designs. Alternatively, it can be understood that the use of the terms "exemplary" or "optional" is intended to present the concept in a specific manner and does not constitute a limitation on this invention.

[0148] It is understood that the various numerical designations used in this utility model are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this utility model. The order of the process numbers does not imply the order of execution; the execution order of each process should be determined by its function and inherent logic. Terms such as "first," "second," and "third," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, such as including a series of steps or units. A method, system, product, or device is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.

Claims

1. A timing chain cover characterized by, include: Timing chain cover body; The timing chain cover body includes a first surface, the periphery of which is provided with a plurality of first mounting holes, and the interior of the first surface is provided with a second mounting hole and at least one support post; The plurality of first mounting holes and second mounting holes are used to cooperate with the cylinder of the engine to form a sealed cavity, the sealed cavity is filled with oil and a moving part is placed therein, and the at least one support column passes through the area outside the moving part.

2. The timing chain cover of claim 1, wherein, The periphery of the first surface protrudes outward to form an edge, and the at least one support column is flush with the edge in height.

3. The timing chain cover according to claim 1 or 2, characterized in that The first surface has multiple support columns inside, which are distributed in the middle area of ​​the first surface.

4. The timing chain cover of claim 3, wherein, The plurality of first mounting holes are distributed on two edges of the first surface in a first direction, and the plurality of support columns are distributed on two sides of the second mounting holes in a second direction, the second direction being perpendicular to the first direction.

5. The timing chain cover of claim 3, wherein, The multiple support columns are not collinear and are not circular.

6. The timing chain cover of claim 3, wherein, The interval between adjacent support columns shall be no less than 10mm and no more than 15mm.

7. The timing chain cover of claims 1 or 2, wherein, The distance between each of the support columns and the plurality of first mounting holes is greater than a first predetermined distance.

8. The timing chain cover of claims 1 or 2, wherein, The cross-sectional dimensions of each support column are positively correlated with its height.

9. The timing chain cover of claims 1 or 2, wherein, Each of the support columns is a cylinder, and the diameter of the cylinder and the height of the cylinder satisfy one of the following relationships: The height of the cylinder is less than 10mm, and the diameter of the cylinder is 3mm; The height of the cylinder is greater than or equal to 10mm and less than 20mm, and the diameter of the cylinder is 4mm; The height of the cylinder is greater than or equal to 20mm and less than 30mm, and the diameter of the cylinder is 5mm; The cylinder has a height greater than 30mm and a diameter of 6mm.

10. The timing chain cover of claims 1 or 2, wherein, It also includes the first positioning hole; The first positioning hole is mounted on the cylinder via a positioning structure, and the diameter of the first positioning hole is smaller than the diameters of the first mounting hole and the second mounting hole.

11. An engine characterized by, Includes a cylinder and a timing chain cover as claimed in any one of claims 1 to 10; The cylinder includes a second surface, the periphery of which is provided with a plurality of third mounting holes, and the interior of which is provided with a fourth mounting hole. The plurality of third mounting holes cooperate with the plurality of first mounting holes, and the fourth mounting hole cooperates with the second mounting hole, so that the cylinder and the timing chain cover form the sealed cavity, and the sealed cavity is filled with oil.

12. The engine of claim 11, wherein, The plurality of third mounting holes are connected to the first mounting hole, and the fourth mounting hole is connected to the second mounting hole by bolts.

13. An engine as claimed in claim 11 or 12, characterised in that, The cylinder also includes a second positioning hole, which is engaged with the first positioning hole of the timing chain cover by a positioning structure.

14. The engine of claim 11 or 12, wherein, The interior of the second surface is also provided with at least one boss, and the at least one boss is fitted together with the at least one support column in a one-to-one correspondence.

15. The engine of claim 11 or 12, wherein, It also includes a moving part, which is fixed in the sealed cavity and lubricated by the oil.

16. The engine of claim 15, wherein The moving parts include a timing chain, a crankshaft timing sprocket, and a camshaft gear, with the crankshaft timing sprocket and the camshaft gear both fixed in the sealed cavity; The timing chain engages with the crankshaft timing sprocket and the camshaft gear respectively to achieve consistent rotation between the crankshaft timing sprocket and the camshaft gear.

17. The engine of claim 11 or 12, wherein, It also includes an oil pump, which is connected to the sealed cavity via a pipeline; The oil pump is used to pressurize the oil to deliver the oil to the moving part inside the sealed cavity.

18. A range extender, characterized in that, The engine includes any one of claims 11 to 17, wherein the input end of the engine is connected to the fuel tank and the output end of the engine is connected to the power unit; The engine is used to convert the chemical energy of the fuel in the fuel tank into kinetic energy and provide it to the power unit.

19. The range extender of claim 18, wherein, It also includes a generator connected between the output of the engine and the power unit; The kinetic energy converted by the engine is also used to drive the generator to generate electricity, and the electrical energy generated by the generator is provided to the power component.

20. A vehicle, characterized by Includes the range extender as described in claim 18 or 19.

Images