Cylinder cover assembly and engine
By integrating a low-load passage and an intake passage into the cylinder head assembly, and using high-temperature oil and gas to heat the intake passage of the cylinder head cover, the problem of gas icing and blockage is solved, thereby improving engine performance and vehicle stability.
Patent Information
- Application Number
- CN202520575759.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-28
AI Technical Summary
When the outside temperature is too low, the liquid carried in the gas flowing to the oil-gas separator may freeze, forming ice blocks that block the pipes. This prevents fuel vapor from being discharged in time, affecting normal ventilation and oil-gas recovery, which in turn causes a decline in engine performance or mechanical failure.
Design a cylinder head assembly that integrates a low-load passage, a cylinder head cover intake passage, and a cylinder head intake passage within the cylinder head assembly. By ensuring that the sum of the lengths of multiple cylinder head cover intake passages is greater than or equal to the width of the valve chamber cavity in the arrangement direction of the intake camshaft bore and exhaust camshaft bore, the high-temperature oil and gas in the valve chamber cavity can heat the cylinder head cover intake passage, preventing gas from freezing and blocking it.
It improves the operational reliability of the cylinder head assembly, ensures engine performance and vehicle operational stability, simplifies the structure, and reduces manufacturing costs.
Smart Images
Figure CN223676387U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle manufacturing technical field especially, relate to a cylinder cover subassembly and have the engine of this cylinder cover subassembly. BACKGROUND
[0002] With the development of national economy and the continuous improvement of people's living standards, vehicles are more and more important in life travel, and the stability of vehicle performance when running is a problem that needs to be considered when producing and manufacturing vehicles. The existing vehicles are all provided with engines to provide running power for the vehicles. The engine will produce oil gas when running, in order to ensure the economy of engine operation and improve the emission, the oil droplets in the oil gas need to be separated by the oil gas separator.
[0003] But when the outside temperature is too low, the liquid carried in the gas flowing to the oil gas separator may freeze to form ice blocks, thereby blocking the pipeline, causing the fuel vapor to be unable to be discharged in time, affecting normal ventilation and oil gas recovery, and thus causing the pressure in the pipeline to be too high, thereby causing the engine front and rear oil seals to leak oil, and in severe cases, the engine performance may be reduced or other mechanical failures may occur, and there is room for improvement. SUMMARY
[0004] The utility model aims at solving one of the technical problems existing in the prior art. To this end, the utility model provides a cylinder cover subassembly, which is simple in structure, high in integration, convenient for arrangement of the cylinder cover subassembly, can reduce the manufacturing cost, and can ensure the operation reliability of the cylinder cover subassembly, so as to improve the engine performance and ensure the running stability of the vehicle.
[0005] The cylinder cover subassembly according to the utility model embodiment comprises: a cylinder cover, an intake passage of the cylinder cover is formed in the cylinder cover; a cylinder cover cover and an oil gas separator, the cylinder cover cover is installed on the cylinder cover, the oil gas separator is installed on the cylinder cover cover, an intake passage of the cylinder cover cover is formed in the cylinder cover cover, a small load passage is formed in the oil gas separator, and the intake passage of the cylinder cover cover is communicated between the small load passage and the intake passage of the cylinder cover; wherein the cylinder cover cover further forms a valve chamber, the cylinder cover cover is provided with an intake camshaft hole and an exhaust camshaft hole, the intake passage of the cylinder cover cover is a plurality of, and the sum of the lengths of the plurality of intake passages of the cylinder cover cover is greater than or equal to the width of the valve chamber in the arrangement direction of the intake camshaft hole and the exhaust camshaft hole.
[0006] According to the cylinder cover assembly provided by the embodiment of the utility model, the small load channel, the cylinder cover cover inlet channel and the cylinder cover inlet channel are integrated in the cylinder cover assembly, so that the structure of the cylinder cover assembly is simplified, the integration degree is improved, the arrangement of the cylinder cover assembly is facilitated, the manufacturing cost of the cylinder cover assembly is reduced, the sum of the lengths of the plurality of cylinder cover cover inlet channels is greater than or equal to the width of the valve chamber cavity in the arrangement direction of the inlet camshaft hole and the exhaust camshaft hole, and then the high-temperature oil gas in the valve chamber cavity can heat the plurality of cylinder cover cover inlet channels, so that the liquid carried by the gas in the cylinder cover cover inlet channel is prevented from being frozen and blocking the channel, the operation reliability of the cylinder cover assembly is ensured, the engine performance is improved, the operation stability of the vehicle is ensured, the use effect is better, and the application range is wider.
[0007] According to the cylinder cover assembly provided by some embodiments of the utility model, the cylinder cover cover inlet channel is four and is the cylinder cover cover first channel, the cylinder cover cover second channel, the cylinder cover cover third channel and the cylinder cover cover fourth channel which are sequentially communicated, and the length direction of any adjacent two of the cylinder cover cover first channel, the cylinder cover cover second channel, the cylinder cover cover third channel and the cylinder cover cover fourth channel forms an included angle.
[0008] The outlet end of the small load channel is communicated with the cylinder cover cover first channel, and the inlet end of the cylinder cover inlet channel is communicated with the cylinder cover cover fourth channel.
[0009] According to the cylinder cover assembly provided by some embodiments of the utility model, the distance between the inlet camshaft hole and the outer wall surface of the cylinder cover cover third channel is d7, and d7 is greater than or equal to 1mm.
[0010] And / or, the distance between the exhaust camshaft hole and the outer wall surface of the cylinder cover cover second channel is d8, and d8 is greater than or equal to 1mm.
[0011] According to the cylinder cover assembly provided by some embodiments of the utility model, the cylinder cover has a cylinder cover top surface for being connected with the cylinder cover cover;
[0012] The distance between the exhaust camshaft hole and the outer wall surface of the cylinder cover cover second channel is less than or equal to the distance between the small load channel and the cylinder cover top surface, and / or the distance between the inlet camshaft hole and the outer wall surface of the cylinder cover cover third channel is less than or equal to the distance between the small load channel and the cylinder cover top surface.
[0013] According to the cylinder cover assembly provided by some embodiments of the utility model, the inner diameter of the cylinder cover cover first channel, the inner diameter of the cylinder cover cover second channel, the inner diameter of the cylinder cover cover third channel and the inner diameter of the cylinder cover cover fourth channel are all greater than or equal to the inner diameter of the small load channel.
[0014] According to the cylinder cover assembly of some embodiments of the present application, the lower end of the small load channel is communicated with the upper end of the cylinder cover first channel, the lower end of the cylinder cover first channel is communicated with the upper part of the cylinder cover second channel, the lower end of the cylinder cover second channel is communicated with the upper end of the cylinder cover third channel, the lower part of the cylinder cover third channel is communicated with the upper end of the cylinder cover fourth channel, and the lower end of the cylinder cover fourth channel is communicated with the cylinder cover intake channel.
[0015] According to the cylinder cover assembly of some embodiments of the present application, the cylinder cover intake channel comprises a cylinder cover first channel, a cylinder cover second channel and a cylinder cover third channel communicated in sequence, the cylinder cover first channel is communicated with the cylinder cover cover intake channel, and the cylinder cover further comprises an engine intake passage communicated with the combustion chamber, and the cylinder cover third channel is communicated with the engine intake passage.
[0016] According to the cylinder cover assembly of some embodiments of the present application, the upper end of the cylinder cover first channel is communicated with the lower end of the cylinder cover cover intake channel, the lower end of the cylinder cover first channel is connected to one end of the cylinder cover second channel through bending, the other end of the cylinder cover second channel is communicated with the upper end of the cylinder cover third channel, and the lower end of the cylinder cover third channel is communicated with the engine intake passage.
[0017] According to the cylinder cover assembly of some embodiments of the present application, the cylinder cover cover is made of a metal material, and the metal material comprises an aluminum alloy or a magnesium alloy.
[0018] The utility model also proposes an engine.
[0019] The engine according to the embodiments of the present application comprises the cylinder cover assembly according to any one of the preceding embodiments.
[0020] The engine and the cylinder cover assembly have the same advantages as the prior art, which will not be repeated here.
[0021] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0022] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
[0023] Figure 1 is a sectional view of the cylinder cover assembly according to the embodiments of the present application Figure 1 ;
[0024] Figure 2 is a sectional view of the cylinder cover assembly according to the embodiments of the present application Figure 2 ;
[0025] Figure 3 is a sectional view of a cylinder head assembly according to an embodiment of the present application Figure 3 ;
[0026] Figure 4 is a structural schematic view of a cylinder head assembly according to an embodiment of the present application.
[0027] Reference signs:
[0028] cylinder head assembly 100,
[0029] cylinder head 1, cylinder head top surface 11, cylinder head first passage 121, cylinder head second passage 122, cylinder head third passage 123, engine intake passage 13,
[0030] cylinder head cover 2, cylinder head cover intake passage 21, cylinder head cover first passage 211, cylinder head cover second passage 212, cylinder head cover third passage 213, cylinder head cover fourth passage 214, plug 215, valve chamber cavity 22, intake camshaft hole 221, exhaust camshaft hole 222,
[0031] oil-gas separator 3, small load passage 31. DETAILED DESCRIPTION
[0032] Embodiments of the present application will be described in detail below with reference to drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.
[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.
[0034] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;It can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0035] Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction is the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.
[0036] Reference will now be made to Figures 1-4 The cylinder head assembly 100 according to an embodiment of the utility model is described below, which has a simple structure, high integration, facilitates the arrangement of the cylinder head assembly 100, can reduce manufacturing costs, and can ensure the operational reliability of the cylinder head assembly 100 to improve engine performance and ensure vehicle operational stability.
[0037] As Figures 1-4 shown, the cylinder head assembly 100 according to an embodiment of the utility model includes a cylinder head 1, a cylinder head cover 2, and an oil-gas separator 3.
[0038] The cylinder head 1 has a cylinder head intake passage formed therein, the cylinder head cover 2 is installed on the cylinder head 1, the oil-gas separator 3 is installed on the cylinder head cover 2, the cylinder head cover 2 has a cylinder head cover intake passage 21 formed therein, the oil-gas separator 3 has a small load passage 31 formed therein, and the cylinder head cover intake passage 21 is connected between the small load passage 31 and the cylinder head intake passage. Among them, the cylinder head cover 2 also has a valve chamber cavity 22, the cylinder head cover 2 is provided with an intake camshaft hole 221 and an exhaust camshaft hole 222, the cylinder head cover intake passage 21 is a plurality of, and the sum of the lengths of the plurality of cylinder head cover intake passages 21 is greater than or equal to the width of the valve chamber cavity 22 in the arrangement direction of the intake camshaft hole 221 and the exhaust camshaft hole 222.
[0039] Among them, the cylinder head assembly 100 is installed above the cylinder block, and then the cylinder can be sealed from the upper part of the cylinder block to form a combustion chamber. When combustion occurs in the combustion chamber, high-temperature and high-pressure gas is generated, so that the cylinder head assembly 100 needs to withstand a large thermal load and mechanical load, and the blow-by gas generated during engine operation can be mixed with fresh air after oil-gas separation and then flow back into the cylinder through the passage in the cylinder head assembly 100 to ensure the operational reliability of the engine.
[0040] Specifically, the cylinder head assembly 100 is provided with a cylinder head 1, which can be connected with a cylinder body to define a combustion chamber, fuel and gas can be introduced into the combustion chamber to burn in the combustion chamber, thereby generating high-temperature and high-pressure gas to provide power for the engine, and the cylinder head assembly 100 is also provided with a cylinder head cover 2 and an oil-gas separator 3, the cylinder head cover 2 is installed above the cylinder head 1, and the oil-gas separator 3 is installed above the cylinder head cover 2 to improve the integration of the cylinder head assembly 100, and the oil-gas separator 3 is formed with a small load channel 31, the blow-by gas generated during engine operation will mix with the oil in the crankcase to form oil-gas after flowing through the crankcase, and the oil-gas can enter the oil-gas separator 3 through one end of the small load channel 31, so as to separate the oil-gas through the oil-gas separator 3 to ensure the purity of the gas flowing back to the combustion chamber, thereby ensuring the reliability of the engine operation and improving the performance of the engine.
[0041] Further, the cylinder head cover intake channel 21 is communicated between the small load channel 31 and the cylinder head intake channel, that is, one end of the small load channel 31 is communicated with the inside of the oil-gas separator 3, and the other end is communicated with one end of the cylinder head cover intake channel 21, and the other end of the cylinder head cover intake channel 21 is communicated with the cylinder head intake channel, so that the gas separated by the oil-gas separator 3 can flow through the small load channel 31 into the cylinder head cover intake channel 21, and then flow through the cylinder head cover intake channel 21 to the cylinder head intake channel, so that the gas can flow through the cylinder head intake channel to mix with fresh air and then flow back to the cylinder for reaction, thereby the small load channel 31, the cylinder head cover intake channel 21 and the cylinder head intake channel are all arranged in the cylinder head assembly 100, which improves the integration of the cylinder head assembly 100, simplifies the structure of the cylinder head assembly 100, facilitates the arrangement of the cylinder head assembly 100, and reduces the manufacturing cost of the cylinder head assembly 100.
[0042] In addition, the cylinder head cover 2 is also formed with a valve chamber cavity 22 for accommodating valves and related components, the cylinder head cover 2 is provided with an intake camshaft hole 221 and an exhaust camshaft hole 222, the intake camshaft hole 221 is used to install an intake camshaft to ensure its accurate rotation to control the opening and closing of the intake valve, thereby enabling air or mixed gas to enter the cylinder, and the exhaust camshaft hole 222 is used to install an exhaust camshaft to ensure its accurate rotation to control the opening and closing of the exhaust valve, thereby enabling the exhaust gas after combustion to be discharged to ensure the reliability of the engine operation, and during engine operation, heat is generated by the friction between the valve and the valve guide and the valve seat, and the exhaust gas discharged through the exhaust valve is also high-temperature gas, thereby making the valve chamber cavity 22 have high-temperature oil-gas.
[0043] Further, the cylinder head cover intake passages 21 can be provided in multiple numbers, that is, the cylinder head cover intake passages 21 can be provided in two, three or four, etc., and the multiple cylinder head cover intake passages 21 can be connected in sequence to transport the gas in the small load channel 31, and the sum of the lengths of the multiple cylinder head cover intake passages 21 is greater than or equal to the width of the valve chamber cavity 22 in the arrangement direction of the intake camshaft hole 221 and the exhaust camshaft hole 222, that is, the sum of the lengths of the multiple cylinder head cover intake passages 21 can be greater than the width of the valve chamber cavity 22 in the arrangement direction of the intake camshaft hole 221 and the exhaust camshaft hole 222, and the sum of the lengths of the multiple cylinder head cover intake passages 21 can also be equal to the width of the valve chamber cavity 22 in the arrangement direction of the intake camshaft hole 221 and the exhaust camshaft hole 222.
[0044] Wherein, the width of the valve chamber cavity 22 in the arrangement direction of the intake camshaft hole 221 and the exhaust camshaft hole 222 is shown as d6 in the figure, and the sum of the lengths of the multiple cylinder head cover intake passages 21 is the sum of d1, d2, d3 and d4 in the figure. Figure 2 Figure 2
[0045] In this way, the total length of the cylinder head cover intake passage 21 is long enough, so that the cylinder head cover intake passage 21 is as much as possible to be enveloped by the high-temperature oil gas in the valve chamber cavity 22, and the contact area between the valve chamber cavity 22 and the outer peripheral wall of the cylinder head cover intake passage 21 is larger, so that the cylinder head cover 2 gas passage is at a higher temperature, thereby avoiding the gas in the cylinder head cover intake passage 21 carrying liquid to block the passage after freezing in a low-temperature environment, to ensure the operation reliability of the cylinder head assembly 100, improve the engine performance, and ensure the vehicle operation stability.
[0046] According to the cylinder head assembly 100 of the embodiment of the utility model, by integrating the small load channel 31, the cylinder head cover intake passage 21 and the cylinder intake passage in the cylinder head assembly 100, the structure of the cylinder head assembly 100 can be simplified, the integration degree is improved, the arrangement of the cylinder head assembly 100 is facilitated, the manufacturing cost of the cylinder head assembly 100 can be reduced, the sum of the lengths of the multiple cylinder head cover intake passages 21 is greater than or equal to the width of the valve chamber cavity 22 in the arrangement direction of the intake camshaft hole 221 and the exhaust camshaft hole 222, so that the high-temperature oil gas in the valve chamber cavity 22 can heat the multiple cylinder head cover intake passages 21, to avoid the liquid carried by the gas in the cylinder head cover intake passage 21 from blocking the passage after freezing, to ensure the operation reliability of the cylinder head assembly 100, improve the engine performance, ensure the vehicle operation stability, the use effect is better, and the application range is wider.
[0047] In some embodiments, the cylinder head cover intake passage 21 is four and is sequentially connected with the cylinder head cover first passage 211, the cylinder head cover second passage 212, the cylinder head cover third passage 213 and the cylinder head cover fourth passage 214. Any two adjacent ones of the cylinder head cover first passage 211, the cylinder head cover second passage 212, the cylinder head cover third passage 213 and the cylinder head cover fourth passage 214 form an included angle in the length direction.
[0048] Specifically, the cylinder head cover intake passage 21 is provided in multiple, and the multiple cylinder head cover intake passages 21 are sequentially connected to transport the gas in the small load passage 31. In this embodiment, as shown in the figure, the cylinder head cover intake passage 21 is provided in four, and is provided as the cylinder head cover first passage 211, the cylinder head cover second passage 212, the cylinder head cover third passage 213 and the cylinder head cover fourth passage 214. The cylinder head cover first passage 211, the cylinder head cover second passage 212, the cylinder head cover third passage 213 and the cylinder head cover fourth passage 214 are sequentially connected to form a complete cylinder head cover intake passage 21. Figure 1
[0049] Further, the cylinder head cover first passage 211 is connected with the small load passage 31, and the cylinder head cover fourth passage 214 is connected with the cylinder head intake passage, so that the gas in the small load passage 31 can flow into the cylinder head cover first passage 211, and sequentially flow into the cylinder head cover second passage 212, the cylinder head cover third passage 213 and the cylinder head cover fourth passage 214, and then flow into the cylinder head intake passage. Any two adjacent ones of the cylinder head cover first passage 211, the cylinder head cover second passage 212, the cylinder head cover third passage 213 and the cylinder head cover fourth passage 214 form an included angle in the length direction, so that the cylinder head cover first passage 211, the cylinder head cover second passage 212, the cylinder head cover third passage 213 and the cylinder head cover fourth passage 214 are connected to form a bent cylinder head cover intake passage 21, to adapt to different cylinder head covers 2, and thus improve the adaptability of the cylinder head cover intake passage 21, and meet different use requirements.
[0050] In actual setting, the cylinder head cover intake passage 21 can also be provided in one, two or three, etc. according to the length requirement and the shape of the cylinder head cover 2, and the total length of the cylinder head cover intake passage 21 should be greater than or equal to the width of the valve chamber cavity 22 in the arrangement direction of the intake camshaft hole 221 and the exhaust camshaft hole 222, to ensure the reliability of heating the gas in the cylinder head cover intake passage 21.
[0051] In some embodiments, the distance between the intake camshaft hole 221 and the outer wall surface of the cylinder head cover third passage 213 is d7, and satisfies: d7≥1mm.
[0052] Specifically, the intake valve chamber 22 is provided with an intake camshaft hole 221, and as shown in Figure 2 The distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover is d7, and d7≥1mm, that is, the distance d7 between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 2mm, etc.
[0053] In this way, the distance d7 between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover is set to satisfy d7≥1mm, which can avoid that the distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover is too small, causing the third passage 213 of the cylinder head cover to be deformed when the intake camshaft is in operation, etc., so as to ensure the operation reliability of the intake camshaft and the intake passage 21 of the cylinder head cover.
[0054] In some embodiments, the distance between the exhaust camshaft hole 222 and the outer wall surface of the second passage 212 of the cylinder head cover is d8, and d8≥1mm.
[0055] Specifically, the intake valve chamber 22 is provided with an intake camshaft hole 221, and as shown in Figure 2 The distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover is d7, and d7≥1mm, that is, the distance d7 between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm or 2mm, etc.
[0056] In this way, the distance d7 between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover is set to satisfy d7≥1mm, which can avoid that the distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover is too small, causing the third passage 213 of the cylinder head cover to be deformed when the intake camshaft is in operation, etc., so as to ensure the operation reliability of the intake camshaft and the intake passage 21 of the cylinder head cover.
[0057] In some embodiments, the cylinder head 1 has a cylinder head top surface 11 for connecting with the cylinder head cover 2, the cylinder head cover 2 is connected above the cylinder head 1, and the upper part of the cylinder head 1 is formed with the cylinder head top surface 11, so that the cylinder head cover 2 can be connected with the top surface of the cylinder head 1, ensuring reliable connection.
[0058] The distance between the exhaust camshaft hole 222 and the outer wall surface of the second passage 212 of the cylinder head cover is less than or equal to the distance between the small load passage 31 and the cylinder head top surface 11, and / or the distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover is less than or equal to the distance between the small load passage 31 and the cylinder head top surface 11.
[0059] That is, only the distance between the exhaust camshaft hole 222 and the outer wall surface of the second passage 212 of the cylinder head cover can be set to be less than or equal to the distance between the small load passage 31 and the cylinder head top surface 11, only the distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover can be set to be less than or equal to the distance between the small load passage 31 and the cylinder head top surface 11, or the distance between the exhaust camshaft hole 222 and the outer wall surface of the second passage 212 of the cylinder head cover and the distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover can be set to be less than or equal to the distance between the small load passage 31 and the cylinder head top surface 11.
[0060] In the present embodiment, the distance between the exhaust camshaft hole 222 and the outer wall surface of the second passage 212 of the cylinder head cover is set to be less than or equal to the distance between the small load passage 31 and the cylinder head top surface 11, and the distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover is set to be less than or equal to the distance between the small load passage 31 and the cylinder head top surface 11.
[0061] In this way, the distance between the exhaust camshaft hole 222 and the outer wall surface of the second passage 212 of the cylinder head cover can be prevented from being too large, so that the high-pressure and high-temperature oil and gas splashed by the exhaust camshaft cannot effectively heat the outer wall surface of the second passage 212 of the cylinder head cover, thereby ensuring the reliability of heating the gas in the second passage 212 of the cylinder head cover. In addition, the distance between the intake camshaft hole 221 and the outer wall surface of the third passage 213 of the cylinder head cover can be prevented from being too large, so that the high-pressure and high-temperature oil and gas splashed by the intake camshaft cannot effectively heat the outer wall surface of the third passage 213 of the cylinder head cover, thereby ensuring the reliability of heating the gas in the third passage 213 of the cylinder head cover, and further ensuring the reliability of the cylinder head cover intake passage 21 conveying the gas.
[0062] In some embodiments, the inner diameter of the first passage 211 of the cylinder head cover, the inner diameter of the second passage 212 of the cylinder head cover, the inner diameter of the third passage 213 of the cylinder head cover, and the inner diameter of the fourth passage 214 of the cylinder head cover are all configured to be greater than or equal to the inner diameter of the small load passage 31.
[0063] Specifically, as shown in FIG. 1, the first passage 211 of the cylinder head cover is connected to the small load passage 31 of the cylinder head top surface 11, and the second passage 212 of the cylinder head cover is connected to the large load passage 32 of the cylinder head top surface 11. The third passage 213 of the cylinder head cover is connected to the exhaust camshaft hole 222, and the fourth passage 214 of the cylinder head cover is connected to the intake camshaft hole 221. Figure 2As shown, the inner diameter of the first channel 211 of the cylinder head cover is set to b2, the inner diameter of the second channel 212 of the cylinder head cover is set to b3, the inner diameter of the third channel 213 of the cylinder head cover is set to b4, the inner diameter of the fourth channel 214 of the cylinder head cover is set to b5, and the inner diameter of the small load channel 31 is set to b1. The inner diameters of the first channel 211, the second channel 212, the third channel 213, and the fourth channel 214 of the cylinder head cover are all constructed to be greater than or equal to the inner diameter of the small load channel 31, that is, b2≥b1, b3≥b1, b4≥b1, and b5≥b1.
[0064] In this way, the inner diameters of the first channel 211, the second channel 212, the third channel 213, and the fourth channel 214 of the cylinder head cover are all set to be no less than the inner diameter of the low-load channel 31. This allows for a further increase in the surface area of the cylinder head cover intake channel 21 without affecting the flow of gas after separation. This increases the surface area of the cylinder head cover intake channel 21 in contact with the high-temperature oil and gas in the valve chamber 22, ensuring the reliability of heating the gas in the cylinder head cover intake channel 21 and thus guaranteeing the reliability of the cylinder head cover intake channel 21 in use.
[0065] In some embodiments, the lower end of the low-load passage 31 is connected to the upper end of the first passage 211 of the cylinder head cover, the lower end of the first passage 211 of the cylinder head cover is connected to the upper part of the second passage 212 of the cylinder head cover, the lower end of the second passage 212 of the cylinder head cover is connected to the upper end of the third passage 213 of the cylinder head cover, the lower part of the third passage 213 of the cylinder head cover is connected to the upper end of the fourth passage 214 of the cylinder head cover, and the lower end of the fourth passage 214 of the cylinder head cover is connected to the cylinder head intake passage.
[0066] Specifically, such as Figures 1-2 As shown, the cylinder head cover intake passage 21 is provided with a cylinder head cover first passage 211, a cylinder head cover second passage 212, a cylinder head cover third passage 213, and a cylinder head cover fourth passage 214 connected in sequence. The lower end of the low load passage 31 is connected to the upper end of the cylinder head cover first passage 211, so that the gas in the low load passage 31 can flow through the cylinder head cover first passage 211 to the cylinder head cover intake passage 21. The lower end of the cylinder head cover first passage 211 is connected to the upper part of the cylinder head cover second passage 212, so that the gas in the cylinder head cover first passage 211 can flow into the cylinder head cover second passage 212. A plug 215 is provided at the upper end of the cylinder head cover second passage 212 to seal the cylinder head cover second passage 212.
[0067] Further, the lower end of the second passage 212 of the cylinder head cover is communicated with the upper end of the third passage 213 of the cylinder head cover, and the lower part of the third passage 213 of the cylinder head cover is communicated with the upper end of the fourth passage 214 of the cylinder head cover, and the lower end of the third passage 213 of the cylinder head cover is provided with a plug 215 to seal the third passage 213 of the cylinder head cover, so that the gas flow in the second passage 212 of the cylinder head cover can flow to the third passage 213 of the cylinder head cover, and then flow to the fourth passage 214 of the cylinder head cover.
[0068] Further, the lower end of the second passage 212 of the cylinder head cover is communicated with the upper end of the third passage 213 of the cylinder head cover, and the lower part of the third passage 213 of the cylinder head cover is communicated with the upper end of the fourth passage 214 of the cylinder head cover, and the lower end of the third passage 213 of the cylinder head cover is provided with a plug 215 to seal the third passage 213 of the cylinder head cover, so that the gas flow in the second passage 212 of the cylinder head cover can flow to the third passage 213 of the cylinder head cover, and then flow to the fourth passage 214 of the cylinder head cover.
[0069] In some embodiments, the cylinder head intake passage includes a first cylinder head passage 121, a second cylinder head passage 122 and a third cylinder head passage 123 communicated in sequence, the first cylinder head passage 121 is communicated with the cylinder head cover intake passage 21, and the cylinder head 1 is further provided with an engine intake passage 13 for communicating with the combustion chamber, and the third cylinder head passage 123 is communicated with the engine intake passage 13.
[0070] Specifically, the cylinder head intake passage is communicated with the lower end of the fourth passage 214 of the cylinder head cover, so that the cylinder head cover intake passage 21 can transport gas to the cylinder head intake passage through the fourth passage 214 of the cylinder head cover, and as shown in Figures 1-3 The cylinder head intake passage is provided with a first cylinder head passage 121, a second cylinder head passage 122 and a third cylinder head passage 123, which are communicated in sequence, so that the first cylinder head passage 121 can be connected with the fourth passage 214 of the cylinder head cover, the second cylinder head passage 122 is communicated between the first cylinder head passage 121 and the third cylinder head passage 123, and the third cylinder head passage 123 can be communicated with the engine intake passage 13.
[0071] In this way, the gas separated by the oil-gas separator 3 can flow to the first cylinder head passage 121 through the small load passage 31 and the cylinder head cover intake passage 21 in sequence, and then flow to the second cylinder head passage 122 through the first cylinder head passage 121, and then flow to the third cylinder head passage 123 through the second cylinder head passage 122, and the gas in the third cylinder head passage 123 can flow to the engine intake passage 13, and then the fresh air mixed at the engine intake passage 13 can enter the combustion chamber of the engine to react and re-burn the gas, avoiding the deterioration of the combustion and emission of the engine.
[0072] In addition, the engine intake passage 13 is provided in plurality, and each engine intake passage 13 is provided with at least one cylinder head third passage 123 correspondingly, so that the gas in the cylinder head second passage 122 can flow into the plurality of cylinder head third passages 123 respectively, and then flow into the corresponding engine intake passage 13 through the plurality of cylinder head third passages 123, which ensures the uniformity of gas distribution and avoids abnormal combustion caused by excessive gas in a certain engine intake passage 13, and ensures the reliability of engine operation.
[0073] In some embodiments, the upper end of the cylinder head first passage 121 is in communication with the lower end of the cylinder cover intake passage 21, the lower end of the cylinder head first passage 121 is connected with one end of the cylinder head second passage 122 by bending, the other end of the cylinder head second passage 122 is in communication with the upper end of the cylinder head third passage 123, and the lower end of the cylinder head third passage 123 is in communication with the engine intake passage 13.
[0074] Specifically, as shown in Figures 1-3 The cylinder head intake passage is provided with a cylinder head first passage 121, a cylinder head second passage 122 and a cylinder head third passage 123, and the upper end of the cylinder head first passage 121 is in communication with the lower end of the cylinder cover intake passage 21, so that the gas flow can flow from the cylinder cover intake passage 21 to the upper end of the cylinder head first passage 121 to flow to the lower end of the cylinder head first passage 121, and the lower end of the cylinder head first passage 121 is connected with one end of the cylinder head second passage 122 by bending, that is, the gas flow in the cylinder head first passage 121 can flow into the cylinder head second passage 122 through the lower end of the cylinder head first passage 121, and then the flow direction of the gas flow can be changed to adapt to different shapes of the cylinder head 1, and the reliability of gas flow is ensured.
[0075] Further, the other end of the cylinder head second passage 122 is in communication with the upper end of the cylinder head third passage 123, and the lower end of the cylinder head third passage 123 is in communication with the engine intake passage 13, and the cylinder head third passage 123 is provided in plurality, the upper end of each of the plurality of cylinder head third passages 123 is in communication with the cylinder head second passage 122, and the lower end of each of the plurality of cylinder head third passages 123 is in communication with the corresponding engine intake passage 13 respectively, so that the gas flow in the cylinder head second passage 122 can be evenly distributed to each engine intake passage 13 through the plurality of cylinder head third passages 123, and the reliability of engine operation is ensured.
[0076] In some embodiments, the cylinder cover 2 is made of metal material, and the metal material includes aluminum alloy or magnesium alloy.
[0077] Specifically, the cylinder cover 2 is internally formed with a valve chamber cavity 22, the valve chamber cavity 22 has high-temperature oil gas, and the cylinder cover 2 is further internally formed with a cylinder cover intake passage 21, the valve chamber cavity 22 envelopes the cylinder cover intake passage 21, so that the high-temperature oil gas in the valve chamber cavity 22 can heat the cylinder cover intake passage 21, thereby avoiding the gas in the cylinder cover intake passage 21 from freezing and blocking the cylinder cover intake passage 21, to ensure the use reliability of the cylinder cover intake passage 21.
[0078] The cylinder cover 2 can be made of a metal material, which can be made of an aluminum alloy or a magnesium alloy or other low-density metal alloy material, so that the temperature of the oil gas in the valve chamber cavity 22 can be transmitted to the cylinder cover 2 made of the metal material, to increase the temperature of the cylinder cover intake passage 21 and further heat the separated gas in the cylinder cover intake passage 21, to reduce the risk of freezing and ensure the use reliability of the cylinder cover intake passage 21, thereby ensuring the stability of the engine operation.
[0079] The utility model also provides an engine.
[0080] The engine according to the utility model embodiment comprises the cylinder cover assembly 100 of any one of the above.
[0081] According to the engine of the utility model embodiment, the small load channel 31, the cylinder cover intake passage 21 and the cylinder intake passage are integrated in the cylinder cover assembly 100, so that the structure of the cylinder cover assembly 100 can be simplified, the integration degree is improved, the arrangement of the cylinder cover assembly 100 is facilitated, the manufacturing cost of the cylinder cover assembly 100 can be reduced, the sum of the lengths of the plurality of cylinder cover intake passages 21 is greater than or equal to the width of the valve chamber cavity 22 in the arrangement direction of the intake camshaft hole 221 and the exhaust camshaft hole 222, and the high-temperature oil gas in the valve chamber cavity 22 can heat the plurality of cylinder cover intake passages 21, so that the liquid carried by the gas in the cylinder cover intake passage 21 is prevented from freezing and blocking the passage, the operation reliability of the cylinder cover assembly 100 is ensured, the engine performance is improved, the vehicle operation stability is ensured, the use effect is better, and the application range is wider.
[0082] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0083] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.
Claims
1. A cylinder head assembly, characterized in that, include: Cylinder head, wherein a cylinder head intake passage is formed within the cylinder head; The cylinder head cover and the oil-gas separator are provided. The cylinder head cover is installed on the cylinder head, and the oil-gas separator is installed on the cylinder head cover. An intake passage is formed inside the cylinder head cover, and a low-load passage is formed inside the oil-gas separator. The intake passage of the cylinder head cover is connected between the low-load passage and the intake passage of the cylinder head. The cylinder head cover also forms a valve chamber cavity. The cylinder head cover is provided with an intake camshaft hole and an exhaust camshaft hole. The cylinder head cover has multiple intake channels, and the sum of the lengths of the multiple intake channels is greater than or equal to the width of the valve chamber cavity in the arrangement direction of the intake camshaft hole and the exhaust camshaft hole.
2. The cylinder head assembly according to claim 1, characterized in that, The cylinder head cover has four intake channels, which are connected in sequence: cylinder head cover first channel, cylinder head cover second channel, cylinder head cover third channel and cylinder head cover fourth channel. The length directions of any two adjacent cylinder head cover first channel, cylinder head cover second channel, cylinder head cover third channel and cylinder head cover fourth channel form an angle. The cylinder head cover first channel is connected to the outlet end of the low load channel, and the cylinder head cover fourth channel is connected to the inlet end of the cylinder head intake channel.
3. The cylinder head assembly according to claim 2, characterized in that, The distance between the intake camshaft hole and the outer wall of the third channel of the cylinder head cover is d7, and satisfies: d7≥1mm; And / or, the distance between the exhaust camshaft hole and the outer wall of the second passage of the cylinder head cover is d8, and satisfies: d8≥1mm.
4. The cylinder head assembly according to claim 2, characterized in that, The cylinder head has a top surface for connection with the cylinder head cover; Wherein, the distance between the exhaust camshaft hole and the outer wall of the second passage of the cylinder head cover is less than or equal to the distance between the low load passage and the top surface of the cylinder head, and / or the distance between the intake camshaft hole and the outer wall of the third passage of the cylinder head cover is less than or equal to the distance between the low load passage and the top surface of the cylinder head.
5. The cylinder head assembly according to claim 2, characterized in that, The inner diameters of the first, second, third, and fourth channels of the cylinder head cover are all configured to be greater than or equal to the inner diameter of the low-load channel.
6. The cylinder head assembly according to claim 2, characterized in that, The lower end of the low-load channel is connected to the upper end of the first channel of the cylinder head cover, the lower end of the first channel of the cylinder head cover is connected to the upper part of the second channel of the cylinder head cover, the lower end of the second channel of the cylinder head cover is connected to the upper end of the third channel of the cylinder head cover, the lower part of the third channel of the cylinder head cover is connected to the upper end of the fourth channel of the cylinder head cover, and the lower end of the fourth channel of the cylinder head cover is connected to the cylinder head intake channel.
7. The cylinder head assembly according to claim 1, characterized in that, The cylinder head intake passage includes a first cylinder head passage, a second cylinder head passage, and a third cylinder head passage connected in sequence. The first cylinder head passage is connected to the cylinder head cover intake passage. The cylinder head is also provided with an engine intake passage for communicating with the combustion chamber. The third cylinder head passage is connected to the engine intake passage.
8. The cylinder head assembly according to claim 7, characterized in that, The upper end of the first cylinder head channel is connected to the lower end of the cylinder head cover air intake channel, the lower end of the first cylinder head channel is bent and connected to one end of the second cylinder head channel, the other end of the second cylinder head channel is connected to the upper end of the third cylinder head channel, and the lower end of the third cylinder head channel is connected to the engine air intake.
9. The cylinder head assembly according to claim 1, characterized in that, The cylinder head cover is made of metal material, including aluminum alloy or magnesium alloy.
10. An engine, characterized in that, Includes the cylinder head assembly according to any one of claims 1-9.