Cylinder cover assembly, engine and vehicle

Abstract

The invention provides a cylinder cover assembly, an engine and a vehicle. The cylinder cover assembly comprises a cylinder cover and a first bearing seat, the cylinder cover and the first bearing seat form a lubricating oil way, the first bearing seat comprises a first base part, the cylinder cover comprises a first bearing platform arranged opposite to the first base part, and the lubricating oil way comprises a distribution oil channel formed between the first base part and the first bearing platform. The distribution oil duct replaces a transverse oil duct formed in the cylinder cover in the prior art, so that the cylinder cover does not need to be drilled to obtain the transverse oil duct, and the wall thickness of the part, originally used as the drilled part of the transverse oil duct, on the cylinder cover gets rid of the limitation of the minimum wall thickness of the transverse oil duct; therefore, the wall thickness of a part, which is originally used as a transverse oil duct processing part, on the cylinder cover can be reduced along the length direction of the cylinder cover, and the length size of the cylinder cover can be reduced, so that an engine carrying the cylinder cover assembly is miniaturized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a cylinder head assembly, an engine and a vehicle. BACKGROUND

[0002] Engine miniaturization is an important design concept, and by reducing the size of the engine, the engine is more easily arranged in the engine compartment. One of the keys to engine miniaturization is to reduce the size of the cylinder head in the length direction, but due to the need to consider factors such as structural strength, durability, and normal implementation of lubrication function, the existing engine lubricating oil circuit is difficult to achieve the purpose of reducing the size of the cylinder head by thinning the wall thickness of the oil circuit, adjusting the position of the oil circuit, etc. SUMMARY

[0003] In view of this, the present application provides a cylinder head assembly, an engine and a vehicle, which aims to reduce the length of the cylinder head to achieve engine miniaturization.

[0004] The cylinder head assembly of the present application comprises a cylinder head and a first bearing seat, the cylinder head and the first bearing seat are configured to form a lubricating oil circuit, the first bearing seat comprises a first base, the cylinder head comprises a first bearing platform arranged opposite the first base, and the lubricating oil circuit comprises a distribution oil gallery formed between the first base and the first bearing platform.

[0005] The cylinder head assembly of the present application has the following beneficial effects:

[0006] The distribution oil gallery replaces the transverse oil gallery in the cylinder head in the prior art, so it is not necessary to drill the cylinder head to obtain the transverse oil gallery, and the wall thickness of the part of the cylinder head originally drilled for the transverse oil gallery is no longer limited by the minimum wall thickness of the transverse oil gallery, so the wall thickness of the part of the cylinder head originally drilled for the transverse oil gallery can be thinned in the length direction of the cylinder head, and the length of the cylinder head can be reduced, thereby achieving engine miniaturization.

[0007] In some embodiments, the first base comprises a first base surface arranged towards the first bearing platform, the first base surface is recessed with an oil guide groove, and the oil guide groove forms the distribution oil gallery.

[0008] In this way, the distribution oil gallery is transferred from the cylinder head to the first bearing seat, the height of the distribution oil gallery is raised compared to the transverse oil gallery in the prior art, so it is not necessary to perform subtractive machining on the cylinder head, the wall thickness of the cylinder head can be further reduced, and the length of the cylinder head can be further reduced. Machining the oil guide groove on the first bearing seat is simpler than subtractive machining on the cylinder head, the required tooling is simplified, the working hours are shortened, and the difficulty is reduced.

[0009] In some embodiments, the first base surface and the first bearing platform are mutually attached to form a surface seal.

[0010] In this way, the sealing gasket between the cylinder head and the first bearing seat is cancelled, and the opening of the oil guide groove is directly closed by the first bearing pad to form the distribution oil gallery.

[0011] In some embodiments, a plane fit is formed between the first base surface and the first bearing pad.

[0012] In this way, the side of the first base surface and the first bearing pad fit the first base surface is easy to process, the fit between the two is uniform, and a good plane sealing effect is obtained.

[0013] In some embodiments, the oil guide groove is a cast groove recessed in the first base surface, the first base part further recessed with a weight reduction groove, the wall thickness of the side of the oil guide groove opposite to the weight reduction groove is equal to the wall thickness of the side of the weight reduction groove opposite to the oil guide groove, and equal to the wall thickness between the oil guide groove and the weight reduction groove.

[0014] In this way, the weight of the first bearing seat is reduced, which is beneficial to the lightweight of the cylinder head assembly and the engine, the oil guide groove has a uniform wall thickness, avoiding different amplitudes of shrinkage at different parts of the oil guide groove wall due to uneven wall thickness, and ensuring the shape and size precision of the oil guide groove.

[0015] In some embodiments, the lubricating oil passage further comprises an oil supply oil gallery opened in the cylinder head, the first bearing pad is provided with an oil inlet hole to communicate the oil supply oil gallery and the distribution oil gallery, the distribution oil gallery comprises a guide-in section and a distribution section, the guide-in section is inclined relative to the distribution section and extends in a direction away from the outer side of the first base part to communicate the oil inlet hole.

[0016] In this way, the oil inlet hole communicates the oil supply oil gallery and the distribution oil gallery, and the lubricating oil can directly flow into the distribution oil gallery after leaving the first bearing pad from the oil inlet hole. The position of the oil inlet hole is appropriate to ensure that the wall thickness of the oil supply oil gallery is appropriate, and prevent the outer side of the oil supply oil gallery and the cylinder head from being too close to thin the wall thickness of the oil supply oil gallery.

[0017] In some embodiments, the distribution section comprises a first avoiding section, the first bearing pad is further provided with a fastening counterbore, the orthographic projection of the first avoiding section on the first bearing pad is located outside the fastening counterbore, and the guide-in section extends in a direction away from the outer side of the first bearing pad relative to the first avoiding section.

[0018] In this way, the first avoiding section avoids the fastening counterbore to ensure that the lubricating oil does not enter the fastening counterbore, preventing the cylinder head or the cylinder block from leaking oil.

[0019] In some embodiments, the lubricating oil passage further comprises a supercharger oil gallery formed in the cylinder head, and the cylinder head further comprises a supercharger mounting portion located inside the first bearing seat, and one end of the supercharger oil gallery is communicated with the oil supply gallery, and the other end of the supercharger oil gallery penetrates through the supercharger mounting portion.

[0020] In this way, the supercharger oil gallery penetrates through the supercharger mounting portion to form an oil outlet, and the oil outlet is closer to the supercharger, so that the distance between the oil outlet and an oil inlet of the supercharger is shortened, and a shorter oil supply pipeline can be used to connect the oil outlet and the oil inlet of the supercharger, the shortening of the oil supply pipeline can improve the vibration amplitude of the engine, optimize the mode of the supercharger and the oil supply pipeline, and improve the NVH performance of the engine.

[0021] In some embodiments, the cylinder head further comprises a fastening platform formed at the bottom of the fastening counterbore, and the outer periphery of the fastening platform is tangent to the inner side wall of the fastening counterbore.

[0022] In this way, the first bearing seat is transferred inward along the length direction of the cylinder head to a greater extent, so that the size of the first base portion can be reduced along the length direction of the cylinder head to a greater extent, thereby achieving sufficient reduction of the length of the cylinder head, which is beneficial to the miniaturization of the cylinder head assembly and the engine.

[0023] In some embodiments, the first bearing seat is further provided with a fastening through hole, the fastening through hole is used for passing a bearing seat fastener, the cylinder head is connected with the first bearing seat through the bearing seat fastener, and the lubricating oil passage further comprises a pressure relief gallery communicated with the fastening through hole.

[0024] In this way, the pressure relief gallery can serve as a flow channel for the lubricating oil to flow out of the fastening through hole, and the lubricating oil in the fastening through hole can be discharged in time through the pressure relief gallery, so as to prevent the lubricating oil from continuously accumulating in the fastening through hole and finally leaking out of the top opening of the fastening through hole.

[0025] In some embodiments, the pressure relief gallery comprises a first pressure relief groove recessed in the first base portion, the first pressure relief groove penetrates through the side portion of the first bearing seat, and the distribution gallery further comprises a second avoiding section separated from the first pressure relief groove and bypassing the bearing seat fastener.

[0026] In this way, the lubricating oil in the fastening through hole can be discharged in time through the first pressure relief groove and flow into the timing cover or the cylinder block, the second avoiding section and the first pressure relief groove are separated from each other, so as to prevent the lubricating oil from directly entering the fastening through hole from the distribution gallery through the first pressure relief groove, and ensure that the distribution gallery maintains a certain oil pressure to effectively supply and distribute the lubricating oil.

[0027] In some embodiments, the first pressure relief groove penetrates through the inner side of the first bearing seat, and the second relief section passes between the bearing seat fastener and the outer side of the first bearing seat.

[0028] In this way, the lubricating oil in the fastening via can be discharged in time through the first pressure relief groove and flow into the cylinder block, thereby achieving recycling of the waste lubricating oil.

[0029] In some embodiments, the first bearing seat comprises a first upper bearing seat and a first lower bearing seat having the first base, and the pressure relief oil passage further comprises a second pressure relief groove and / or a third pressure relief groove, the second pressure relief groove being located at the bottom of the first upper bearing seat, and the third pressure relief groove being located at the top of the first lower bearing seat.

[0030] In this way, the second pressure relief groove and the third pressure relief groove both form pressure relief oil passages, thereby increasing the number of pressure relief oil passages based on the first pressure relief groove, and the lubricating oil accumulated in the fastening via can be more easily and completely discharged outward, thereby further reducing the risk of oil leakage at the top end opening of the fastening via.

[0031] In some embodiments, the lubricating oil passage further comprises a journal passage opened in the first base, the journal passage being in communication with the distribution oil passage and the bearing hole of the first bearing seat.

[0032] In this way, a part of the lubricating oil in the distribution oil passage is distributed to the journal of the camshaft for lubrication and cooling through the journal passage; the distribution oil passage is closer to the bearing hole of the first bearing seat than the transverse oil passage in the cylinder head in the prior art, and therefore the journal passage in communication with the distribution oil passage is shorter than the journal passage in communication with the transverse oil passage in the prior art. Obviously, the oil taking path of the journal of the camshaft is shorter, and the lubricating oil can enter the bearing hole from the distribution oil passage through the journal passage more quickly.

[0033] In some embodiments, the lubricating oil passage further comprises a tappet oil passage opened in the cylinder head, and a flow-limiting oil passage in communication with the tappet oil passage and the distribution oil passage.

[0034] In this way, a part of the lubricating oil in the distribution oil passage is distributed to the hydraulic tappet for lubrication through the flow-limiting oil passage and the tappet oil passage; the flow-limiting oil passage has a flow-limiting effect, so that the amount of lubricating oil entering the tappet oil passage can be accurately controlled, avoiding excessive lubricating oil; the flow-limiting oil passage can replace devices such as throttle valves, thereby reducing the number of parts and assembly steps of the cylinder head assembly.

[0035] In some embodiments, the first bearing seat further has a valve insertion hole for mounting an oil control valve, and the lubricating oil passage further comprises an insertion hole oil passage opened in the first bearing seat, the insertion hole oil passage being in communication with the distribution oil passage and the valve insertion hole.

[0036] In this way, a part of lubricating oil in the distribution oil gallery is distributed to the oil control valve in the valve hole through the insertion hole oil gallery, the oil control valve being part of the variable valve timing system; the insertion hole oil gallery is shorter than the transverse oil gallery in the cylinder head, so the oil path of the oil control valve is shortened, and the lubricating oil can enter the oil control valve more quickly, improving the response speed of the variable valve timing system.

[0037] In some embodiments, the distribution oil gallery comprises an oil collection cavity, the insertion hole oil gallery penetrates the first base to communicate with the oil collection cavity, and the flow limiting oil gallery penetrates the first bearing pad to communicate with the oil collection cavity.

[0038] In this way, the oil collection cavity has the function of buffering the accumulated lubricating oil, and when the accumulated amount of lubricating oil in the oil collection cavity reaches a certain level and the oil pressure in the oil collection cavity reaches a certain pressure value, the lubricating oil in the oil collection cavity enters the insertion hole oil gallery and the flow limiting oil gallery in two parts, ensuring the flow rate of the lubricating oil in the insertion hole oil gallery and the flow limiting oil gallery, and realizing continuous and uninterrupted supply of lubricating oil to the oil control valve and the hydraulic tappet.

[0039] In some embodiments, the first bearing seat further has a fastening through hole for a bearing seat fastener, the cylinder head is connected to the first bearing seat through the bearing seat fastener, and the lubricating oil passage further comprises a pressure relief oil gallery communicating the valve hole and the fastening through hole.

[0040] In this way, the lubricating oil accumulated in the fastening through hole can flow out through the pressure relief oil gallery and be used by the oil control valve in the valve hole, improving the utilization rate of lubricating oil and facilitating smooth operation of the oil control valve under conditions such as vehicle rapid acceleration.

[0041] The engine of the present application comprises a cylinder block, a camshaft and a cylinder head assembly, the cylinder head is fixedly connected to the cylinder block, and the camshaft is rotatably installed in the bearing seat.

[0042] The engine of the present application has the following advantages:

[0043] The position on the cylinder head originally used for drilling the transverse oil gallery can be thinned, and the length of the cylinder head can be reduced, so the size of the engine with the cylinder head assembly in the length direction of the cylinder head can be reduced, and the miniaturization of the engine is realized.

[0044] The vehicle of the present application comprises an engine. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The structure of the cylinder head assembly of one embodiment of the present application is shown in the figure;

[0046] Figure 2 This is a schematic diagram of the lubrication oil circuit of a cylinder head assembly according to one embodiment of the present invention;

[0047] Figure 3 This is an exploded view of a cylinder head assembly according to one embodiment of the present invention;

[0048] Figure 4 This is a partial top view of a cylinder head assembly according to one embodiment of the present invention;

[0049] Figure 5 for Figure 3 An exploded view of the first bearing housing of the cylinder head assembly shown.

[0050] Figure 6 This is a partial structural cross-sectional view of a cylinder head assembly according to one embodiment of the present invention.

[0051] Explanation of reference numerals in the attached figures:

[0052] 100. Cylinder head assembly; 10. Cylinder head; 11. First bearing plate; 110. Fastening countersunk hole; 121. Fastening platform; 122. First row of cylinder head bolt holes; 123. Second row of cylinder head bolt holes; 124. Third row of cylinder head bolt holes; 125. Fourth row of cylinder head bolt holes; 126. Fifth row of cylinder head bolt holes; 13. Oil inlet; 14. Turbocharger mounting section; 151. First bearing housing fastening hole; 152. Second bearing housing fastening hole; 153. Third bearing housing fastening hole; 16. Second bearing plate; 20. First bearing housing; 201. Bearing hole; 21. First upper bearing housing; 22. First lower bearing housing; 23. First base; 24. Oil guide groove; 25. Weight reduction groove; 261. First pressure relief groove; 271. First fastening through hole; 272. Second fastening through hole; 2 73. Third fastening through hole; 274. Fourth fastening through hole; 275. Fifth fastening through hole; 276. Sixth fastening through hole; 200. Lubricating oil passage; 210. Oil supply passage; 220. Turbocharger oil passage; 230. Distribution passage; 231. Inlet section; 232. First clearance section; 233. Oil collection chamber; 234. Second clearance section; 240. Journal passage; 250. Tappet oil passage; 260. Flow limiting oil passage; 270. Valve insertion hole; 280. Insertion hole oil passage; 290. Pressure control oil passage; 300. Camshaft; 410. Oil control valve; 420. Bearing housing fastener; 421. First bearing housing bolt; 422. Second bearing housing bolt; 423. Third bearing housing bolt; 430. Locating pin; 440. Timing gear train; 450. Sealing component. Detailed Implementation

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0055] The present application provides a cylinder head assembly 100, an engine and a vehicle with the engine, the cylinder head assembly 100 comprising a cylinder head 10 and a bearing seat, the engine comprising the cylinder head assembly 100, a cylinder block and a camshaft 300. The cylinder head 10 is fixedly connected with the cylinder block, the bearing seat has a bearing hole 201 for the camshaft 300 to extend into, and the camshaft 300 is rotatably installed on the bearing seat and can rotate relative to the cylinder head assembly 100 and the cylinder block. Referring to Figure 1 and Figure 3 In some embodiments, the engine further comprises a timing gear train 440 installed on the camshaft 300 and an oil control valve 410 installed on the bearing seat, the timing gear train 440 is used to connect a timing chain, and the timing gear train 440, the timing chain and the oil control valve 410 are key components of a variable valve timing mechanism of the engine. The cylinder head 10 and the bearing seat are preliminarily positioned before being connected through a positioning pin 430, and are fixedly connected through a bearing seat fastener 420.

[0056] The bearing seat comprises a first bearing seat 20 and a second bearing seat (not shown in the figure), the first bearing seat 20 and the second bearing seat are arranged side by side and spaced apart along the length direction of the cylinder head 10, and the length direction of the cylinder head 10 is also the axial direction of the camshaft 300 and the axial direction of the crankshaft of the engine. Figure 1 The cylinder head assembly 100 of one embodiment of the present application is shown, the length direction of the cylinder head 10 is parallel to the X-axis direction of the space rectangular coordinate system in the figure. The cylinder block, the cylinder head 10 and the bearing seat are arranged in sequence along the height direction of the cylinder head 10, the height direction of the cylinder head 10 is parallel to the Z-axis direction of the space rectangular coordinate system in the figure, and the direction of the X-axis in the figure is parallel to the width direction of the cylinder head 10. Figures 1-6 The X-axis direction of the space rectangular coordinate system in the figure always represents the length direction of the cylinder head 10, the Y-axis direction always represents the width direction of the cylinder head 10, and the Z-axis direction always represents the height direction of the cylinder head 10.

[0057] Figure 1 The cylinder head assembly 100 shown is applicable to an engine equipped with two camshafts 300, which are arranged in a width direction of the cylinder head 10, and each of the first bearing seat 20 and the second bearing seat has two bearing holes 201, which are respectively for the two camshafts 300 to pass through.

[0058] The cylinder head 10 and the first bearing seat 20 jointly constitute a lubricating oil passage 200. The first bearing seat 20 includes a first base 23, and the cylinder head 10 includes a first bearing platform 11 arranged opposite to the first base 23, which serves as a bearing surface of the first base 23, and the first bearing platform 11 bears the first bearing seat 20 and the camshafts 300. The lubricating oil passage 200 includes an oil supply gallery 210 and a distribution gallery 230, which are in communication with each other. The oil supply gallery 210 is connected to an oil pump of the engine, and the distribution gallery 230 is formed between the first base 23 and the first bearing platform 11. In some embodiments, a first base surface of the first base 23 arranged towards the first bearing platform 11 is concavely provided with an oil guide groove 24, and the distribution gallery 230 is formed by the oil guide groove 24. The oil guide groove 24 has an oil groove opening towards the first bearing platform 11, and when the first base 23 is borne on the first bearing platform 11, the oil guide groove 24 is closed to the oil groove opening by the first bearing platform 11 to form the distribution gallery 230. The lubricating oil first flows into the oil supply gallery 210 and then flows into the oil guide groove 24.

[0059] Optionally, the first base surface directly contacts the first bearing platform 11, and no sealing material such as a sealing gasket is arranged therebetween, and the first base surface and the first bearing platform 11 are mutually adhered to form a surface seal. Figure 1 and Figure 3 As shown, the first base surface is entirely located in the same plane and forms a plane adhesion with the first bearing platform 11. In this way, the distribution gallery 230 is equivalent to completely transferring the transverse oil gallery in the prior art from the cylinder head 10 to the first bearing seat 20, so that the cylinder head 10 does not need to be subjected to subtractive machining, the wall thickness of the drilling site originally serving as the transverse oil gallery on the cylinder head 10 is reduced, and compared with machining the cylinder head 10, machining the oil guide groove 24 on the first base 23 is simpler in process, the positioning tooling required for machining is simplified, the working hours are shortened and the difficulty is reduced, and the precision of the oil guide groove 24 is easy to guarantee; the adhesion of the first base surface and the first bearing platform 11 in the same plane can improve the uniformity of the adhesion therebetween and the sealing effect.

[0060] Optionally, the oil guide groove 24 is a cast forming groove concavely provided in the first base surface, and on this basis, referring to Figure 4The first base 23 is further recessed with a weight-reducing groove 25 adjacent to the oil guide groove 24. The wall thickness of the oil guide groove 24 opposite to the weight-reducing groove 25 is equal to or approximately equal to the wall thickness of the weight-reducing groove 25 opposite to the oil guide groove 24, and is also equal to the wall thickness between the oil guide groove 24 and the weight-reducing groove 25. In this way, the weight of the first bearing seat 20 is reduced, which is beneficial to the lightweight of the cylinder head assembly 100 and the engine. The oil guide groove 24 has a uniform wall thickness, which avoids the casting defects such as internal shrinkage and blowhole at different positions of the groove wall of the oil guide groove 24 and the groove wall of the weight-reducing groove 25 due to the excessively large difference in wall thickness, and ensures the shape and size precision of the oil guide groove 24. In addition, the first base 23 is recessed with the oil guide groove 24 and the weight-reducing groove 25 to present a grid-shaped rib structure. The grid-shaped rib structure constitutes the groove wall of the oil guide groove 24 and the groove wall of the weight-reducing groove 25 and separates the oil guide groove 24 and the weight-reducing groove 25. Therefore, the oil guide groove 24 and the weight-reducing groove 25 improve the modal of the first bearing seat 20, which is helpful to improve the NVH performance of the cylinder head assembly 100 and the engine.

[0061] The distribution oil gallery 230 has the same function as the transverse oil gallery in the prior art, i.e., to obtain and guide and distribute lubricating oil.

[0062] In some embodiments, referring to Figures 2-4 The lubricating oil passage 200 further comprises a journal passage 240 formed in the first base 23. The journal passage 240 communicates the distribution oil gallery 230 with the bearing hole 201 of the first bearing seat 20. In this way, at least part of the lubricating oil in the distribution oil gallery 230 is distributed to the bearing hole 201 through the journal passage 240 to lubricate and cool the journal of the camshaft 300. The distribution oil gallery 230 is closer to the bearing hole 201 of the first bearing seat 20 than the transverse oil gallery in the prior art formed in the cylinder head 10. Therefore, the journal passage 240 for communicating the distribution oil gallery 230 in the present embodiment is shorter than the journal passage 240 for communicating the transverse oil gallery in the prior art. Obviously, the oil taking path of the journal of the camshaft 300 in the present embodiment is shorter than that in the prior art. The lubricating oil can enter the bearing hole 201 of the first bearing seat 20 from the distribution oil gallery 230 through the journal passage 240 more quickly.

[0063] In other embodiments, as Figures 2-4As shown, the lubricating oil passage 200 further comprises a tappet oil channel 250 and a restrictor oil channel 260 formed in the cylinder head 10, the distribution oil channel 230 and the tappet oil channel 250 are communicated through the restrictor oil channel 260, in this way, at least part of the lubricating oil in the distribution oil channel 230 lubricates the hydraulic tappet through the restrictor oil channel 260 and the tappet oil channel 250, the restrictor oil channel 260 precisely controls the amount of lubricating oil entering the tappet oil channel 250, thus the restrictor oil channel 260 has a flow restricting effect and can replace the throttle valve and other devices, reducing the number of parts and assembly steps of the cylinder head assembly 100.

[0064] In yet some embodiments, as Figures 2-4 As shown, the first bearing seat 20 is further provided with a valve insertion hole 270 for installing an oil control valve 410, the oil control valve 410 is also called OCV module, which is part of the variable valve timing system, the lubricating oil passage 200 further comprises a plug hole oil channel 280 and a pressure control oil channel 290 formed in the first bearing seat 20, one end of the plug hole oil channel 280 is communicated with the valve insertion hole 270, the other end penetrates through the first base 23 to communicate with the distribution oil channel 230, and the pressure control oil channel 290 is communicated with the bearing hole 201. In this way, at least part of the lubricating oil in the distribution oil channel 230 is distributed to the oil control valve 410 through the plug hole oil channel 280, and the oil control valve 410 can send part of the lubricating oil into the bearing hole 201 through the pressure control oil channel 290, thereby improving the lubrication effect of the camshaft 300 journal. Since the distribution oil channel 230 is closer to the valve insertion hole 270 than the transverse oil channel formed in the cylinder head 10 in the prior art, the plug hole oil channel 280 in this embodiment is shorter than the plug hole oil channel 280 connected with the transverse oil channel in the prior art, which shortens the oil taking path of the oil control valve 410, and the lubricating oil can enter the oil control valve 410 faster, thereby improving the response speed of the variable valve timing system and making the vehicle perform better in the working condition of sudden acceleration.

[0065] It can be understood that in other embodiments, the lubricating oil passage 200 comprises the above-mentioned journal passage 240, the restrictor oil channel 260 and the tappet oil channel 250, or the lubricating oil passage 200 comprises the above-mentioned journal passage 240 and the plug hole oil channel 280, or the lubricating oil passage 200 comprises the above-mentioned plug hole oil channel 280, the restrictor oil channel 260 and the tappet oil channel 250, or the lubricating oil passage 200 comprises the above-mentioned journal passage 240, the restrictor oil channel 260, the tappet oil channel 250 and the plug hole oil channel 280. The journal passage 240, the restrictor oil channel 260, the tappet oil channel 250 and the plug hole oil channel 280 respectively provide three different directions for the lubricating oil in the distribution oil channel 230.

[0066] As an example of the transverse oil passage in the prior art, the transverse oil passage is formed in the side wall of the cylinder head 10 by drilling, and thus is a cylindrical straight oil passage. The extension direction of the transverse oil passage is the width direction of the cylinder head 10. In addition, the cylinder head 10 is provided with a plurality of sets of cylinder head bolt holes. Usually, the number of sets of cylinder head bolt holes is five. Referring to Figure 5 , the plurality of sets of cylinder head bolt holes are arranged along the length direction of the cylinder head 10. Each set of cylinder head bolt holes includes one cylinder head bolt hole or a plurality of cylinder head bolt holes arranged along the width direction of the cylinder head 10. The cylinder head bolt holes are used for cylinder head fastening bolts to pass through. The cylinder block and the cylinder head 10 are connected by the cylinder head fastening bolts. The extension direction of the cylinder head bolt holes is the height direction of the cylinder head 10.

[0067] The first row of cylinder head bolt holes 122 closest to the transverse oil passage in the plurality of sets of cylinder head bolt holes is the first row of cylinder head bolt holes 122. The axis of the transverse oil passage and the axis of the first row of cylinder head bolt holes 122 are intersected in different planes. A certain distance needs to be ensured between the axis of the transverse oil passage and the axis of the first row of cylinder head bolt holes 122, otherwise the transverse oil passage and the first row of cylinder head bolt holes 122 will be too close, resulting in that the wall thickness of the transverse oil passage is too small. The small wall thickness of the transverse oil passage causes a weak area in the side wall of the transverse oil passage, which is prone to fatigue, dark cracking or even cracking. Since the processing technology of the transverse oil passage in the prior art is an elongated hole drilling process, the drilling center is prone to deviation during drilling. The distance between the axis of the transverse oil passage and the axis of the first row of cylinder head bolt holes 122 needs to be enlarged on the basis of the theoretical distance to leave a safe machining allowance, which avoids the thinning of the wall thickness of the transverse oil passage due to the deviation of the drilling center line during the drilling of the transverse oil passage. Therefore, in order to ensure the minimum wall thickness of the transverse oil passage, the prior art requires a larger distance between the axis of the transverse oil passage and the axis of the first row of cylinder head bolt holes 122. However, the disadvantage of such design is that the wall thickness of the drilling processing part of the transverse oil passage on the cylinder head 10 is large, the length of the cylinder head 10 is large, the size of the cylinder head assembly 100 and the engine in the length direction of the cylinder head 10 is large, and the engine is difficult to install in the engine compartment. This disadvantage is particularly obvious for a transverse engine.

[0068] The present application replaces the transverse oil passage in the prior art by the oil distribution passage 230, so that the cylinder head 10 does not need to be drilled to form the transverse oil passage, the wall thickness of the drilled part of the cylinder head 10 originally used as the transverse oil passage is not limited by the minimum wall thickness of the transverse oil passage, and thus the wall thickness of the drilled part of the cylinder head 10 originally used as the transverse oil passage can be reduced along the length direction of the cylinder head 10, the length of the cylinder head 10 can be reduced, and finally the size of the cylinder head assembly 100 and the engine carrying the cylinder head assembly 100 in the length direction of the cylinder head 10 is reduced, so that the cylinder head assembly 100 and the engine are miniaturized, the engine is easier to install in a compact engine compartment, and interference with other devices in the engine compartment is avoided.

[0069] The first bearing seat 20 is also provided with fastening through holes, and the first bearing platform 11 is provided with bearing seat fastening holes. The cylinder head 10 is connected with the first bearing seat 20 through bearing seat fastening members 420. The bearing seat fastening members 420 pass through the fastening through holes and then extend out of the first base surface of the first bearing seat 20, and then extend into the bearing seat fastening holes. See Figure 1 、 Figures 3-5 , Figure 5 The first bearing seat 20 includes a first upper bearing seat 21 and a first lower bearing seat 22. The pressure control oil passage 290 is arranged in the first upper bearing seat 21. The first base 23 is formed in the first lower bearing seat 22. The bearing holes 201 are formed by the first upper bearing seat 21 and the first lower bearing seat 22. The fastening through holes include the first fastening through hole 271, the third fastening through hole 273 and the fifth fastening through hole 275 arranged in the first upper bearing seat 21, and the second fastening through hole 272, the fourth fastening through hole 274 and the sixth fastening through hole 276 arranged in the first lower bearing seat 22. The bearing seat fastening members 420 include the first bearing seat bolt 421, the second bearing seat bolt 422 and the third bearing seat bolt 423. The bearing seat fastening holes include the first bearing seat fastening hole 151, the second bearing seat fastening hole 152 and the third bearing seat fastening hole 153. The first bearing seat bolt 421 passes through the first fastening through hole 271 and the second fastening through hole 272 and then extends into the first bearing seat fastening hole 151. The second bearing seat bolt 422 passes through the third fastening through hole 273 and the fourth fastening through hole 274 and then extends into the second bearing seat fastening hole 152. The third bearing seat bolt 423 passes through the fifth fastening through hole 275 and the sixth fastening through hole 276 and then extends into the third bearing seat fastening hole 153. One of the bearing holes 201 of the first bearing seat 20 is located between the first bearing seat bolt 421 and the second bearing seat bolt 422, and the other bearing hole 201 is located between the second bearing seat bolt 422 and the third bearing seat bolt 423.

[0070] The first bearing seat 20 is also provided with fastening through holes, and the first bearing platform 11 is provided with bearing seat fastening holes. The cylinder head 10 is connected with the first bearing seat 20 through bearing seat fastening members 420. The bearing seat fastening members 420 pass through the fastening through holes and then extend out of the first base surface of the first bearing seat 20, and then extend into the bearing seat fastening holes. See Figures 3-4 、 Figure 6When the oil guide groove 24 recessed in the first base surface forms the distribution oil gallery 230, compared with the cross-sectional shape of the transverse oil gallery in the prior art, the cross-sectional shape of the distribution oil gallery 230 can have more forms, including but not limited to arcuate, rectangular, trapezoidal, triangular, and the cross-sectional shape of the distribution oil gallery 230 can be different at different positions on the distribution oil gallery 230, in contrast, for the transverse oil gallery obtained by the drilling machining process, the oil gallery cross-sectional shape can only be circular, and the oil gallery cross-sectional area is always unique; in addition, the oil guide groove 24 can be a curved extension groove, and the distribution oil gallery 230 can be a non-linear oil gallery with a curved section, in contrast, for the transverse oil gallery obtained by the drilling machining process, the oil gallery extension direction can only be straight, and the reasonably designed non-linear distribution oil gallery 230 can flexibly avoid the bearing seat fastener 420 and the bearing seat fastening hole, ensure that there is enough distance between the distribution oil gallery 230 and the bearing seat fastener 420, and between the distribution oil gallery 230 and the bearing seat fastening hole, reduce the amount of lubricating oil entering the fastening via hole and the bearing seat fastening hole, and improve the problem of lubricating oil seepage from the fastening via hole.

[0071] Figure 6 The distribution oil gallery 230 shown has a rectangular cross-sectional shape, and it can be understood that for two distribution oil galleries 230 with equal cross-sectional areas and circular and square cross-sectional shapes respectively, the side length of the square cross-sectional shape is smaller than the diameter of the circular cross-sectional shape, so it is easier to thin the first base 23 by using the square cross-sectional shape of the distribution oil gallery 230, and it is easier to reduce the size of the first base 23 along the X-axis direction and the size of the first base 23 along the Z-axis direction, and accordingly, it is easier to reduce the size of the first bearing platform 11 along the X-axis direction. Of course, the cross-sectional shape of the distribution oil gallery 230 is not limited to a square shape, and in order to further reduce the size of the first base 23 and the first bearing platform 11 along the X-axis direction, the cross-sectional shape of the distribution oil gallery 230 can also be a rectangular shape, and the length of the side a in the X-axis direction of the rectangular cross-sectional shape can be smaller than the length of the side b in the Z-axis direction of the rectangular cross-sectional shape. The smaller the length of the side a, the smaller the size of the first base 23 along the X-axis direction and the size of the first bearing platform 11 along the X-axis direction.

[0072] Referring to Figures 1-3 The oil supply gallery 210 is provided in the cylinder head 10, one end of the oil supply gallery 210 penetrates through the side of the cylinder head 10 relatively close to the cylinder block, and the lubricating oil driven by the oil pump first flows into the cylinder block and then enters the oil supply gallery 210. The other end of the oil supply gallery 210 penetrates through the side of the first bearing platform 11 facing the first base surface to form an oil inlet hole 13, the oil inlet hole 13 communicates with the oil groove opening of the oil guide groove 24, the oil supply gallery 210 and the distribution oil gallery 230 are directly communicated, and the lubricating oil leaving the oil supply gallery 210 enters the distribution oil gallery 230 through the oil inlet hole 13. Alternatively, the oil supply gallery 210 extends along the height direction of the cylinder head 10, Figures 2-3The Z-axis direction indicates the height direction of the cylinder head 10.

[0073] See Figures 1-2 , Figures 4-5 The first bearing platform 11 is also provided with a fastening countersunk hole 110, which can be obtained by countersinking. Therefore, the bottom countersinking plane of the fastening countersunk hole 110 forms a fastening platform 121 facing the first base surface. That is, a height difference is formed between the fastening platform 121 and the side of the first bearing platform 11 used to fit the first base surface. The first row of cylinder head bolt holes 122 are through holes opened in the fastening platform 121. After obtaining the fastening countersunk hole 110, drilling is performed on the bottom countersinking plane of the fastening countersunk hole 110 to obtain the first row of cylinder head bolt holes 122. When the cylinder head 10 and the cylinder block are connected by cylinder head fastening bolts, the head of the cylinder head fastening bolt abuts against the fastening platform 121. The fastening countersunk hole 110 provides operating space for the bolt gun. The bolt gun connected to the cylinder head fastening bolt extends into the fastening countersunk hole 110 and then drives the cylinder head fastening bolt to rotate. The oil guide groove 24 is a curved strip-shaped groove. Figure 5 The dashed line represents the orthographic projection of the oil guide groove 24 onto the first bearing platform 11. The oil supply passage 230 is a curved strip-shaped flow channel with a curved section. The curved section includes an inlet section 231 and a supply section. The supply section includes a first clearance section 232. The orthographic projection of the first clearance section 232 on the first bearing platform 11 is located outside the fastening countersunk hole 110. The outside of the fastening countersunk hole 110 refers to the side of the fastening countersunk hole 110 that is relatively far away from the other cylinder head bolt holes except for the first row of cylinder head bolt holes 122. The second row of cylinder head bolt holes 123, the third row of cylinder head bolt holes 124, the fourth row of cylinder head bolt holes 125, and the fifth row of cylinder head bolt holes 126 gradually move away from the first row of cylinder head bolt holes 122 along the length direction of the cylinder head 10. The inlet section 231 is inclined and bent relative to the first clearance section 232 and extends in a direction away from the outside of the first base 23 to connect to the oil inlet hole 13. The outside of the first base 23 is the side of the first base 23 that is relatively far away from the second bearing seat.

[0074] With this configuration, the position of the oil inlet hole 13 along the length of the cylinder head 10 is the same as the position of the oil supply passage 210 along the length of the cylinder head 10. The appropriate position of the oil supply passage 210 along the length of the cylinder head 10 ensures that its wall thickness is suitable, and the wall thickness S between the inner wall of the oil supply passage 210 and the outer wall of the cylinder head 10 is sufficient. Furthermore, the first clearance section 232 can bypass the fastening countersunk hole 110, ensuring that the lubricating oil flowing through the first clearance section 232 does not enter the fastening countersunk hole 110, thus preventing oil leakage in the cylinder head 10 or cylinder block. It is understandable that if the inlet section 231 and the first clearance section 232 were designed to be straight, extending along the width of the cylinder head 10, the oil supply passage 210 and the outer wall of the cylinder head 10 would be too close, resulting in a thinner wall thickness for the oil supply passage 210.

[0075] Optionally, such as Figure 5 As shown, the outer peripheral edge of the fastening platform 121 is tangent to the inner wall of the fastening countersunk hole 110, and the fastening platform 121 can be a circular platform. With this configuration, the first support 11 can be moved inward to a greater extent along the length direction of the cylinder head 10, which means that the first support 11 as a whole can be closer to the other cylinder head bolt holes except for the first row of cylinder head bolt holes 122. Therefore, the dimensions of the first base 23 and the first support 11 can be further reduced along the length direction of the cylinder head 10, thereby significantly reducing the length dimension of the cylinder head 10.

[0076] See Figures 1-2 In some embodiments, the lubrication circuit 200 further includes a turbocharger oil passage 220 opened in the cylinder head 10. The cylinder head 10 also includes a second support 16 and a turbocharger mounting portion 14 located inside the first support 11. The first support 11 and the second support 16 are arranged side by side and spaced apart along the length direction of the cylinder head 10. The second support 16 is used to support and install the second bearing seat. The inner side of the first support 11 is the side of the first support 11 that is relatively close to the second support 16. The turbocharger mounting portion 14 is used to install the turbocharger. The turbocharger oil passage 220 extends along the length direction of the cylinder head 10 and passes through the turbocharger mounting portion 14 to form an oil outlet. With this configuration, the oil outlet is closer to the turbocharger, shortening the distance between the oil outlet and the turbocharger's oil intake. Therefore, a shorter oil supply line can be used to connect the oil outlet and the turbocharger's oil intake. The shorter oil supply line can reduce the vibration amplitude of the engine, optimize the mode of the turbocharger and the oil supply line, and help improve the NVH performance of the engine and the vehicle.

[0077] Furthermore, the lubrication circuit 200 also includes a pressure relief oil passage connecting to the fastening through-hole. See details... Figures 3-4In some embodiments, the pressure relief oil passage includes a first pressure relief groove 261 recessed in the first base surface of the first base 23. The first pressure relief groove 261 can be a cast groove. The first pressure relief groove 261 extends through the side of the first bearing seat 20. The dispensing section of the dispensing oil passage 230 also includes a second clearance section 234, which bypasses the bearing seat fastener 420. The first pressure relief groove 261 and the second clearance section 234 are spaced apart and not connected to each other. With this configuration, the pressure relief oil passage can serve as a channel for lubricating oil to flow outward from the fastening through hole. Especially when the first base surface and the first bearing platform 11 are in direct contact, a small amount of lubricating oil is likely to enter the fastening through hole. The configuration of the pressure relief oil passage can allow the accumulated lubricating oil in the fastening through hole to be discharged in a timely manner, preventing the continuous accumulation of lubricating oil in the fastening through hole and thus preventing oil leakage. The lubricating oil entering the first pressure relief groove 261 can flow into the timing cover or cylinder body. Since the second clearance section 234 and the first pressure relief groove 261 are mutually blocked, the lubricating oil in the second clearance section 234 will not directly enter the fastening through hole, which helps to maintain the oil pressure and oil quantity inside the distribution oil passage 230, and ensures that the distribution oil passage 230 effectively supplies and distributes lubricating oil.

[0078] like Figure 5 As shown, one end of the first pressure relief groove 261 passes through the fourth fastening through hole 274, and the other end passes through the inner side of the first bearing housing 20. The inner side of the first bearing housing 20 is the side of the first bearing housing 20 that is relatively close to the second bearing housing. The second clearance section 234 passes between the second bearing housing bolt 422 and the outer side of the first bearing housing 20. The outer side of the first bearing housing 20 is the side of the first bearing housing 20 that is relatively far away from the second bearing housing. With this configuration, the lubricating oil accumulated in the fourth fastening through hole 274 can flow into the cylinder body through the first pressure relief groove 261. This lubricating oil can be used to lubricate the components inside the cylinder body, thus achieving recycling. If the first pressure relief groove 261 passes through the outer side of the first bearing housing 20, the lubricating oil accumulated in the fourth fastening through hole 274 will flow into the timing cover.

[0079] The reason why the first pressure relief groove 261 penetrates the fourth fastening through hole 274 is that the rigidity of the two ends of the first bearing housing 20 along the width direction of the cylinder head 10 is relatively high, while the rigidity of the middle part of the first bearing housing 20 along the width direction of the cylinder head 10 is relatively low. This results in a more serious accumulation of lubricating oil in the fourth fastening through hole 274, while the second fastening through hole 272 and the sixth fastening through hole 276 accumulate little or almost no lubricating oil. Of course, the first pressure relief groove 261 that penetrates the second fastening through hole 272 and the sixth fastening through hole 276 can also be recessed on the first base surface.

[0080] In some embodiments, the pressure relief oil passage further comprises at least one of a second pressure relief groove and a third pressure relief groove, the second pressure relief groove is recessed in the bottom of the first upper shaft seat 21, and the third pressure relief groove is recessed in the top of the first lower shaft seat 22, one end of the second pressure relief groove penetrates the third fastening through-hole 273, and the other end penetrates the inner side or the outer side of the first upper shaft seat 21, one end of the third pressure relief groove penetrates the fourth fastening through-hole 274, and the other end penetrates the inner side or the outer side of the first lower shaft seat 22, and when the first upper shaft seat 21 and the first lower shaft seat 22 enclose the bearing hole 201, the bottom of the first upper shaft seat 21 is in abutment with the top of the first lower shaft seat 22. In this way, the lubricating oil accumulated in the third fastening through-hole 273 and the fourth fastening through-hole 274 can be discharged in time through the second pressure relief groove and the third pressure relief groove, and in particular, when there is more lubricating oil accumulated in the third fastening through-hole 273 and the fourth fastening through-hole 274, it is difficult to ensure the oil discharge efficiency only by the first pressure relief groove 261, and at this time, the second pressure relief groove and the third pressure relief groove can improve the oil discharge efficiency.

[0081] Further, in some embodiments not shown in the drawings, the valve insertion hole 270 comprises a first insertion hole formed in the first upper shaft seat 21 and a second insertion hole formed in the first lower shaft seat 22, when the bottom of the first upper shaft seat 21 is in abutment with the top of the first lower shaft seat 22, and the first upper shaft seat 21 and the first lower shaft seat 22 enclose the bearing hole 201, the first insertion hole and the second insertion hole are coaxially communicated to form a cavity for the oil control valve 410 to insert, and the second pressure relief groove can also penetrate the first insertion hole, and the third pressure relief groove can also penetrate the second insertion hole. In this way, the lubricating oil accumulated in the third fastening through-hole 273 and the fourth fastening through-hole 274 can enter the valve insertion hole 270 through the second pressure relief groove and the third pressure relief groove, so as to be utilized by the oil control valve 410, thereby realizing efficient utilization of the lubricating oil.

[0082] In some embodiments, the distribution oil passage 230 further comprises an oil collection cavity 233 formed by the enlarged portion in the oil guide groove 24, if the distribution oil passage 230 is cut by a plane parallel to the height direction and the length direction of the cylinder head 10, the cross section of the oil collection cavity 233 obtained by the cutting of the plane is larger than the cross section formed by the cutting of other sections of the distribution oil passage 230, as shown in Figures 4-5As shown, the plug hole oil passage 280 penetrates the first base surface of the first base 23 to directly communicate with the oil collection cavity 233, and the flow limiting oil passage 260 penetrates the side of the first bearing seat 11 abutting the first base surface to directly communicate with the oil collection cavity 233. In this way, the oil collection cavity 233 has the function of buffering accumulated lubricating oil, and when a certain amount of lubricating oil is accumulated in the oil collection cavity 233, the oil pressure in the oil collection cavity 233 can be maintained relatively stable, and the lubricating oil in the oil collection cavity 233 has two directions, the first direction is to enter the plug valve hole 270 through the plug hole oil passage 280 to be used by the oil control valve 410, and the second direction is to enter the tappet oil passage 250 through the flow limiting oil passage 260 to be used by the hydraulic tappet. The buffering function of the oil collection cavity 233 enables the lubricating oil to be distributed along the above two directions at the same time to meet the simultaneous oil use requirements of the oil control valve 410 and the hydraulic tappet; and the buffering function can ensure sufficient and uninterrupted supply of lubricating oil to the oil control valve 410 and the hydraulic tappet, for example, when the vehicle is rapidly accelerated, the instantaneous oil consumption of the oil control valve 410 increases, and the lubricating oil buffered in the oil collection cavity 233 can be supplemented to the oil control valve 410 in time.

[0083] Referring to Figures 1-2 , Figures 4-5 , the number of flow limiting oil passages 260 and tappet oil passages 250 is two, the number of oil control valves 410 and plug hole oil passages 280 is two, and the distribution oil passage 230 includes two oil collection cavities 233, one of the flow limiting oil passages 260 and one of the plug hole oil passages 280 communicate with one of the oil collection cavities 233, the other flow limiting oil passage 260 and the other plug hole oil passage 280 communicate with the other oil collection cavity 233, and the two oil collection cavities 233 are located at the two ends of the second avoiding section 234 respectively, the shape of each oil collection cavity 233 in orthographic projection on the first bearing seat 11 is approximately triangular, semicircular or semi-elliptical, and the orthographic projection contour of the oil collection cavity 233 on the first bearing seat 11 protrudes relative to the first avoiding section and the second avoiding section except for the first row of cylinder head bolt holes 122. In this way, the plug hole oil passage 280 can be further shifted inward along the length direction of the cylinder head 10, that is, the plug hole oil passage 280 is shifted inward along the length direction of the cylinder head 10 to approach the second bearing seat and the second bearing seat 16 to reduce the size K, and the positions of the plug valve hole 270 and the oil control valve 410 can be shifted inward along the length direction of the cylinder head 10, thereby making the cylinder head assembly 100 and the engine more compact, and also leaving more wiring harness installation space for arranging the wiring harness connected to the oil control valve 410.

[0084] Further, referring to Figure 1 and Figure 2The outer side of the cylinder head 10 is penetrated by the supercharger oil passage 220 and the tappet oil passage 250. To prevent lubricating oil in the supercharger oil passage 220 and the tappet oil passage 250 from flowing out of the outer side of the cylinder head 10, the cylinder head assembly 100 further comprises a blocking member 450, which can be a ball or a plug, and which can be a metal element. The opening of the outer side of the cylinder head 10, which is penetrated by the supercharger oil passage 220 and the tappet oil passage 250, is blocked by the blocking member 450.

[0085] In other embodiments not shown in the drawings, in addition to the oil guide groove 24 recessed in the first base surface, the first bearing block 11 also has an oil guide groove 24 recessed in the side of the first bearing block 11 that bears the first bearing seat 20. The oil guide groove 24 recessed in the first base surface can be a cast molding groove, and the oil guide groove 24 recessed in the first bearing block 11 can be a milled groove. When the first base 23 is borne on the first bearing block 11, the oil guide groove 24 recessed in the first base surface and the oil guide groove 24 recessed in the first bearing block 11 together form the distribution oil passage 230. In this way, the cross-sectional area of the distribution oil passage 230 is shared by the two oil guide grooves 24, so that the cross-sectional area of each of the two oil guide grooves 24 can be further reduced, thereby helping to further reduce the size of the first base 23 and the first bearing block 11 in the length direction of the cylinder head 10, and thereby further reduce the size of the cylinder head assembly 100 in the length direction of the cylinder head 10. It can be understood that when the oil consumption of the camshaft 300 journal, the oil control valve 410, and the hydraulic tappet increases, the distribution oil passage 230 can also be formed by the two oil guide grooves 24 to increase the cross-sectional size of the distribution oil passage 230, thereby increasing the flow of lubricating oil in the distribution oil passage 230.

[0086] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features of the above-described embodiments are described, but it should be understood that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in a contradiction.

[0087] Those skilled in the art should understand that the above-described embodiments are only used to illustrate the present application, but not to limit the present application. Any modification and change made to the above-described embodiments within the spirit and scope of the present application should be considered within the scope of the present application.

Claims

1. A cylinder head assembly comprising a cylinder head (10) and a first bearing seat (20), the cylinder head (10) and the first bearing seat (20) being configured to form a lubricating oil passage (200), characterized in that, The first bearing seat (20) comprises a first base (23), the cylinder cover (10) comprises a first bearing platform (11) oppositely arranged with the first base (23), and the lubricating oil passage (200) comprises a distribution oil channel (230) formed between the first base (23) and the first bearing platform (11).

2. The cylinder head assembly of claim 1, wherein, The first base (23) comprises a first base surface arranged towards the first bearing platform (11), and the first base surface is concavely provided with an oil guide groove (24) forming the distribution oil channel (230).

3. The cylinder head assembly of claim 2, wherein, The first base surface and the first bearing platform (11) are mutually attached to form a surface seal.

4. The cylinder head assembly of claim 3, wherein, The first base surface and the first bearing platform (11) are mutually attached to form a surface seal.

5. The cylinder head assembly of claim 1, wherein, The first base surface and the first bearing platform (11) are mutually attached to form a surface seal.

6. The cylinder head assembly of claim 5, wherein, The lubricating oil passage (200) further comprises a supply oil channel (210) opened in the cylinder cover (10), the first bearing platform (11) is provided with an oil inlet hole (13) to communicate the supply oil channel (210) and the distribution oil channel (230), the distribution oil channel (230) comprises a guide-in section (231) and a distribution section, the guide-in section (231) is inclined relative to the distribution section and extends away from the outer side of the first base (23) to communicate the oil inlet hole (13).

7. The cylinder head assembly of claim 6, wherein, The distribution section comprises a first avoiding section (232), the first bearing platform (11) is further provided with a fastening counterbore (110), the orthographic projection of the first avoiding section (232) on the first bearing platform (11) is located outside the fastening counterbore (110), and the guide-in section (231) is inclined relative to the first avoiding section (232) away from the outer side of the first base (23).

8. The cylinder head assembly of claim 5, wherein, The cylinder cover (10) further comprises a fastening platform (121) formed by the bottom of the fastening counterbore (110), and the outer periphery of the fastening platform (121) is tangent to the inner side wall of the fastening counterbore (110).

9. The cylinder head assembly of claim 1, wherein, The lubricating oil passage (200) further comprises a supercharger oil channel (220) opened in the cylinder cover (10), and the cylinder cover (10) further comprises a supercharger mounting portion (14), one end of the supercharger oil channel (220) communicates with the supply oil channel (210), and the other end penetrates through the supercharger mounting portion (14).

10. The cylinder head assembly of claim 9, wherein, The first bearing seat (20) is further provided with a fastening via hole, the fastening via hole is for a bearing seat fastener (420) to pass through, the cylinder cover (10) and the first bearing seat (20) are connected through the bearing seat fastener (420), and the lubricating oil passage (200) further comprises a pressure relief oil channel communicating with the fastening via hole. The pressure relief oil channel comprises a first pressure relief groove (261) concavely provided in the first base (23), the first pressure relief groove (261) penetrates through the side of the first bearing seat (20), and the distribution oil channel (230) further comprises a second avoiding section (234) bypassing the bearing seat fastener (420) and separated from the first pressure relief groove (261).

11. The cylinder head assembly of claim 10, wherein, The first pressure relief groove (261) penetrates the inner side of the first bearing seat (20), and the second avoiding section (234) passes between the bearing seat fastener (420) and the outer side of the first bearing seat (20).

12. The cylinder head assembly of claim 9, wherein, The first bearing seat (20) comprises a first upper bearing seat (21) and a first lower bearing seat (22) with the first base (23), and the pressure relief oil passage further comprises a second pressure relief groove and / or a third pressure relief groove, the second pressure relief groove being located at the bottom of the first upper bearing seat (21), and the third pressure relief groove being located at the top of the first lower bearing seat (22).

13. The head assembly of any one of claims 1-12, wherein The lubricating oil passage (200) further comprises a journal passage (240) opened in the first base (23), the journal passage (240) communicating the distribution oil passage (230) with a bearing hole (201) of the first bearing seat (20); and / or, The lubricating oil passage (200) further comprises a tappet oil passage (250) opened in the cylinder head (10) and a flow-limiting oil passage (260) communicating the tappet oil passage (250) with the distribution oil passage (230); and / or, The first bearing seat (20) is further provided with a valve insertion hole (270) for mounting an oil control valve (410), and the lubricating oil passage (200) further comprises a plug hole oil passage (280) opened in the first bearing seat (20), the plug hole oil passage (280) communicating the distribution oil passage (230) with the valve insertion hole (270).

14. The cylinder head assembly of claim 13, wherein, The distribution oil passage (230) comprises an oil collecting cavity (233), the plug hole oil passage (280) penetrates the first base (23) to communicate the oil collecting cavity (233), and the flow-limiting oil passage (260) penetrates the first bearing pedestal (11) to communicate the oil collecting cavity (233).

15. The cylinder head assembly of claim 13, wherein, The first bearing seat (20) is further provided with a fastening through hole for a bearing seat fastener (420) to pass through, the cylinder head (10) and the first bearing seat (20) are connected through the bearing seat fastener (420), and the lubricating oil passage (200) further comprises a pressure relief oil passage communicating the valve insertion hole (270) with the fastening through hole.

16. An engine characterized by, An engine assembly comprising a cylinder block, a camshaft (300) and a cylinder head assembly as claimed in any one of claims 1 to 15, the cylinder head (10) being fixedly connected to the cylinder block, and the camshaft (300) being rotatably mounted in the bearing seat.

17. A vehicle characterized by comprising: An engine as claimed in claim 16. An engine as claimed in claim 16.

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