CN212838100U

CN212838100U - Cylinder head cover

Info

Publication number: CN212838100U
Application number: CN202021332343.5U
Authority: CN
Inventors: 郑秉秀; 李相昈
Original assignee: Doosan Infracore Co Ltd
Current assignee: HD Hyundai Infracore Co Ltd
Priority date: 2020-01-14
Filing date: 2020-07-09
Publication date: 2021-03-30
Anticipated expiration: 2030-07-09
Also published as: KR20210091468A

Abstract

The utility model relates to a cylinder head cover, it makes the cover body that contains oil blow by gas gathering including the configuration on the cylinder head upper portion of engine, include: a cover base disposed to face the upper portion of the cylinder head with a space therebetween; a cover side surface portion extending from an edge of the cover base in the cylinder head direction and coupled to the cylinder head; a cover inner space formed between the cover base and the cover side surface portion; and a gas discharge port formed on the cover to guide discharge of the blow-by gas.

Description

Cylinder head cover

Technical Field

The present invention relates to an engine, and more particularly, to a cylinder head cover for an engine.

Background

Generally, an engine produces power by burning injected fuel. Specifically, a combustion chamber is formed between a cylinder block and a cylinder head of the engine. The combustion process of air and injected fuel within the combustion chamber of the engine causes the piston within the combustion chamber to reciprocate. At this time, the power of the engine is generated by the reciprocating motion of the piston.

The combustion of fuel and air inside the combustion chamber of the engine is performed by contacting the fuel and air, which is called an explosion stroke of the engine, and thereafter, an exhaust stroke is performed in which the exhaust gas in the combustion chamber after the combustion is discharged to the outside of the engine through an exhaust valve. At this time, all the gas inside the combustion chamber may not be discharged as exhaust gas to the outside of the engine through the exhaust valve. A part of the gas inside the combustion chamber passes through a space between the piston and the cylinder, and the like, and remains inside the engine. This is commonly referred to as blow-by gas (blow-by gas). The blow-by gas may include not only exhaust gas that has completed combustion but also unburned fuel. Such blow-by gas remaining inside the engine is collected inside the engine and collected in the uppermost portion of the engine, i.e., the cylinder head cover.

The oil inside the engine is circulated and recovered to the oil pan again. The blow-by gas may include engine oil particles. When the blow-by gas is discharged from the cylinder head cover of the engine, there is caused a problem that the engine oil as a contaminant is discharged to the outside of the engine together with the oil inside the engine to be lost.

SUMMERY OF THE UTILITY MODEL

Technical subject

An embodiment of the utility model provides a can reduce the cylinder head cover that the inside oil of engine runs off to the outside through blowing gas leakage.

Means for solving the problems

According to the utility model discloses an embodiment, a cylinder head cover, it is including the cover body that the configuration makes the blow-by gas that contains oil gather on the cylinder head upper portion of engine, include: a cover base disposed to face the upper portion of the cylinder head with a space therebetween; a cover side surface portion extending from an edge of the cover base in the cylinder head direction and coupled to the cylinder head; a cover inner space formed between the cover base and the cover side surface portion; and a gas discharge port formed on the cover to guide discharge of the blow-by gas.

The cylinder head of the engine may further include a movement flow path that divides a region of the cover body internal space to guide movement of the blow-by gas to the gas discharge port, and the movement flow path may include: a flow path member disposed between the cover base and the cover side surface, at least a part of the edge of the flow path member being supported by the cover side surface; and a support portion that supports the remaining edge of the flow path member and divides the cover body internal space.

Further, the flow path member may include: an inflow port formed in the flow path member and through which the blow-by gas flows; and an oil collecting portion that is disposed below the flow path member and that is capable of collecting oil contained in blow-by gas that flows in through the inlet port and passes through the movement flow path.

Further, the oil collecting portion may include: an extension region formed to extend from the flow path member toward the cylinder head; and a curved region that is formed by curving from the extended region to the flow path member.

Further, the movement flow path may be arranged along a longitudinal direction of the cover body formed to be long in one direction.

Further, the movement flow path may include: a travel flow path region that guides movement of the blow-by gas in one direction from the inlet port to the gas outlet port; and a swirling flow path region which is formed to extend in one direction from the gas discharge port to the side surface of the cover body and moves the blow-by gas passing through the travel flow path region.

Further, the support portion may be integrally formed with the cover.

Further, the head cover may further include a reinforcement portion that is formed on the cover body and that protrudes toward the cylinder head inside the upper portion of the cover body.

Further, the reinforcing part may be formed in a honeycomb pattern type.

Further, the cylinder head cover may further include: a plurality of fastening holes formed in the cover body to be spaced apart from each other so as to be fastened to the cylinder head; and an airtight member insertion groove formed in the cover body so that an airtight member disposed between the cylinder head and the cover body is inserted therein, wherein the airtight member insertion groove may be disposed adjacent to an inner side of the cover body in comparison with the plurality of fastening holes in a region in which the plurality of fastening holes are formed, and the airtight member insertion groove may be disposed apart from the inner side of the cover body in comparison with the airtight member insertion groove in a region between the plurality of fastening holes.

Further, a region of the outer circumferential portion of the cover body in which the plurality of fastening holes are formed may be formed to protrude toward a lower portion of the cover body than the remaining region between the plurality of fastening holes.

The utility model has the following effects.

According to the utility model discloses, the cylinder head cover can reduce the inside oil of engine and run off to the cylinder head cover outside.

Drawings

Fig. 1 shows an exploded view of a cylinder head cover-equipped engine according to an exemplary embodiment of the present invention.

Fig. 2 shows a plan view of the interior of a cylinder head cover of an exemplary embodiment of the present invention.

Fig. 3 is a view showing a cross section a-a of fig. 2.

Fig. 4 is a view showing that the section C-C of fig. 2 is rotated.

Fig. 5 is a view showing that the section B-B of fig. 2 is rotated.

Fig. 6 is an enlarged view of the region a' of fig. 2.

Fig. 7 is a view showing a D-D section of fig. 2.

Fig. 8 is an enlarged view of the reinforcing portion of fig. 2.

Fig. 9 is a view showing a section E-E of fig. 2.

Description of the symbols

10: engine, 20: cylinder block, 30: oil pan, 40: cylinder head, 50: airtight member, 100: cover body, 101: cylinder head cover, 105: cover base, 106: cover side surface portion, 110: gas discharge port, 120: support portion, 150: fastening hole, 160: airtight member insertion groove, 161: inner peripheral surface of airtight member insertion groove, 162: outer peripheral surface of airtight member insertion groove, 180: cover body inner space, 200: movement flow path, 201: travel flow path, 202: convoluted flow path, 210: flow path member, 211: inflow port, 220: oil collecting portion, 221: extension region, 222: bending region, 300: a reinforcing portion.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can easily implement the embodiments of the present invention. The present invention can be realized in various forms, and is not limited to the embodiments described herein.

Note that the figures are diagrammatic and not drawn to scale. Relative dimensions and ratios of parts in the figures are shown exaggerated or reduced in size for the sake of drawing accuracy and convenience, and any dimensions are exemplary only and not limiting. And the same reference numerals are used for the same structures, elements or components shown in two or more figures to denote similar features.

The embodiment of the present invention specifically shows the ideal embodiment of the present invention. Accordingly, it is anticipated that various modifications will exist in the illustrations. Therefore, the embodiment is not limited to the specific form of the illustrated field, and may include, for example, a modification of the form through manufacturing.

A cylinder head cover 101 according to an embodiment of the present invention will be described below with reference to fig. 1 to 9.

As shown in fig. 1, a cylinder head cover 101 is disposed above the cylinder head 40. Further, the cylinder head cover 101 includes a cover body 100. Specifically, the engine 10 includes a cylinder block 20, a cylinder head 40 disposed at an upper portion of the cylinder block 20, an oil pan 30 disposed at a lower portion of the cylinder block 20, and a cylinder head cover 101 disposed at an upper portion of the cylinder head 40. Further, a combustion chamber is formed between the cylinder block 20 and the cylinder head 40, and fuel injected by a fuel injector supported on the cylinder head 40 is combusted in the combustion chamber. The combustion process of air and injected fuel within the combustion chamber of the engine causes the piston within the combustion chamber to reciprocate. At this time, the power of the engine 10 is generated by the reciprocating motion of the piston.

The combustion of fuel and air inside the combustion chamber of the engine 10 is performed by contacting the fuel and air, which is referred to as an explosion stroke of the engine 10, and thereafter, an exhaust stroke is performed in which the exhaust gas in the combustion chamber after the combustion is discharged to the outside of the engine through an exhaust valve. At this time, all the gas inside the combustion chamber may not be discharged as exhaust gas to the outside of the engine through the exhaust valve. A part of the gas inside the combustion chamber passes through a space between the piston and the cylinder, and the like, and remains inside the engine. This is commonly referred to as blow-by gas (blow-by gas). The blow-by gas may include not only exhaust gas that has completed combustion but also unburned fuel. Such blow-by gas remaining inside the engine is collected inside the engine and collected in the cylinder head cover 101, which is the uppermost portion of the engine.

The oil inside the engine 10 is circulated and recovered to the oil pan again. The blow-by gas may include engine oil particles. When the blow-by gas is discharged from the cylinder head cover 101 of the engine 10, there is caused a problem that the engine oil as a contaminant is discharged to the outside of the engine together to lose the oil inside the engine. To prevent this problem, there is also a case where a separate device is provided outside the cylinder head cover to add a system for separating engine oil contained in blow-by gas. However, when the amount of blow-by gas discharged from the gas discharge port 110 of the cylinder head cover 101 is large or engine oil contained in the blow-by gas is large, there is a problem that the oil separation efficiency of the external device is reduced.

As shown in fig. 2, a cylinder head cover 101 according to an embodiment of the present invention includes a cover base 105, a cover side surface 106, a cover internal space 108, and a gas discharge port 110.

The cover body 100 includes a cover body base 105 disposed opposite to the upper portion of the cylinder head 40 with a space therebetween. The cover base 105 is disposed apart from the cylinder head 40, and may form an upper surface of the cover 100.

The cover 100 includes a cover side surface portion 106 extending from an edge of the cover base 105 toward the cylinder head 40 and coupled to the cylinder head 40. The cover side surface part 160 forms a spacing distance between the cover base 105 and the cylinder head 40. That is, the cover side surface 160 may be a peripheral surface of the cover 100.

The cover interior space 180 is a space formed between the cover base 105 and the cover side surface 106. The cover interior space 180 may be a space within the cover 100, and may be an area where the blow-by gas can stay.

The cover 100 may be formed with a gas discharge port 110. The gas outlet 110 guides and discharges the blow-by gas collected in the cover 100 to the outside of the cover 100.

For example, a gas discharge port 110 may be formed in the cover side surface portion 106, which is a side surface of the cover 100. That is, the gas discharge port 110 may be formed in the cover side surface portion 106 in a direction parallel to the longitudinal direction of the cover 100.

In addition, the cylinder head cover 101 according to an embodiment of the present invention may further include a moving flow path 200.

The movement flow path 200 is disposed inside the cover 100. The movement flow path 200 is guided so as to move the blow-by gas collected in the cover 100 to the discharge port 110. Specifically, the movement flow path 200 may divide a region of the cover internal space 180 inside the cover body 100 to provide a path for the remaining blow-by gas to move to the gas discharge port 110 formed on the cover body 100.

That is, as shown in fig. 5, the movement flow path 200 communicates with the discharge port 110 and partitions a region of the cover body internal space 180, so that oil in the engine 10 can be effectively prevented from splashing and flowing out through the gas discharge port 110.

The cylinder head cover 101 according to an embodiment of the present invention may be formed longer in one direction. The movement flow path 200 may be arranged along the longitudinal direction of the cover 100.

The movement flow path 200 may be disposed long in the longitudinal direction of the cover body 100, so that the length of the blow-by gas moving to the gas discharge port 110 through the movement flow path 200 may be increased. Specifically, the moving flow path 200 reduces the speed at which the blow-by gas containing oil moves to the gas discharge port 110, so that the blow-by gas containing oil can be prevented from moving to the gas discharge port 110 at a faster flow rate.

The movement flow path 200 may include a flow path member 210 and a support 120.

The flow path member 210 may be disposed between the cover base 105 and the cover side surface 106. The flow path member 210 may be guided in such a manner that the blow-by gas moves to the gas discharge port 110. Specifically, as shown in fig. 3, one surface of the flow path member 210 may be disposed to face the cover base 105 and be spaced apart therefrom.

The flow path member 210 may be formed to be long in the longitudinal direction of the cover 100. As shown in fig. 2, the flow path members 210 may be arranged side by side in the longitudinal direction along the cover side surface portion 106. Alternatively, the flow path member 210 may divide an area including the side wall of the cover 100. The length of the flow path member 210 may be about 40 to 50% of the length of the cover body 100.

Further, at least a part of the edge of the flow path member 210 may be supported by the cover side surface part 106. Specifically, at least a part of the edge of the flow path member 210 may be supported on the cover side surface part 106 in the longitudinal direction of the cover 100 and the cover side surface part 106 in the width direction of the cover 100. That is, a part of the longitudinal edge of the flow path member 210 may be supported by the cover side surface 106 in the longitudinal direction of the cover 100, and a part of the width edge of the flow path member 210 may be supported by the cover side surface 106 in the width direction of the cover 100. Thus, the movement flow path 200 may include an area including the cover side surface portion 106.

The support 120 may support the remaining edge of the flow path member 210 and may divide the housing inner space 180. Specifically, the support 120 may divide the cover body internal space 180 so as to be divided into an area inside the movement flow path 200 communicating with the gas discharge port 110 and where the blow-by gas stays before flowing into the movement flow path 200.

For example, the support 120 may be integrally formed with the cover 100. Specifically, the support portion 12 may be formed to extend from the cover body base 105 in a direction toward the cylinder head 40 to support the remaining area where the flow path member 210 is not supported at the cover body side face portion 106, and may distinguish the cover body internal space 180 into an area communicating with the gas discharge port 110 and the remaining area. That is, the extended length of the support portion 120 may form the movement flow path 200, and may be a spaced distance between the flow path member 210 and the cover base 105. By forming the support portion 120 integrally with the cover body 100, the flow path member 210 can be directly joined to the cover body 100 to form a moving flow path and complete the production of the cylinder head cover 101 without providing a separate member for supporting the flow path member 210 and by assembling or welding the separate member to the cover body 100.

In addition, as shown in fig. 2 to 5, the flow path member 210 of the cylinder head cover 101 according to an embodiment of the present invention may include an inflow port 211 and an oil collecting portion 220.

As shown in fig. 2 and 4, the inlet 211 may be formed in the flow path member 210. The inlet 211 may allow blow-by gas or the like to flow into the flow path member 210. The inflow hole 211 may be formed toward the cylinder head 40. Specifically, blow-by gas that moves from the combustion chamber to the upper portion of the cover 100 and flows into the inlet 210 formed in the flow path member 210 can pass between the flow path member 210 and the upper inner surface of the cover 100. The length of the inlet 211 may be about 4 to 8% of the length of the cover 100.

The oil collecting portion 220 may be disposed at a lower portion of the flow path member 210. The oil collecting portion 220 can collect the oil contained in the blow-by gas through the inflow port 211. The oil collecting portion 220 may collect oil contained in the blow-by gas passing between the flow path member 210 and the upper inner surface of the cover body 100 when the oil falls.

Further, the oil collecting portion 220 is formed on the flow path member 210 formed long in one direction, so that oil contained in the blow-by gas passing through the inside of the flow path member 210 can be collected when it falls. Specifically, the oil collecting portion 220 may be formed on the flow path member 210.

For example, the oil collecting portion 220 may be formed on the flow path member 210 between the inflow port 211 and the gas discharge port 110. Further, an area of the flow path member 210 in which the oil collecting portion 220 is disposed may be formed to be recessed toward a lower portion of the cover body 100.

Thus, the movement flow path 200 of the cylinder head cover 101 includes the oil collecting portion 220, so that the oil contained in the blow-by gas can be collected to prevent the oil from being discharged to the outside of the cylinder head cover 101 to cause a decrease in the oil inside the engine 10.

In addition, as shown in fig. 3, the oil collecting portion of the cylinder head cover 101 according to an embodiment of the present invention may include an extension region 221 and a bending region 222.

The extension region 221 may be formed to extend from the flow member 210 toward the cylinder head 40. One end of the extension region 221 may communicate with the inside of the flow path member 210, and the other end of the extension region 221 may be formed to extend in a direction away from the flow path member 210.

The bending region 222 may be connected with the extension region 221. Further, one end of the bent region 222 may be connected to the other end of the extension region 221, and the other end of the bent region 222 may be formed to be bent in a direction adjacent to the flow path member 210. The other end of the bent region 222 may be open-formed. Also, the other end of the bending region 222 may be disposed at a relatively lower position than the one end of the extension region 221.

Specifically, the oil collected to the oil collecting portion 220 may be stored in the bent region 222 through the extended region 221. Further, the oil stored in the bent area 222 may fall onto the cylinder head 40 after maintaining a prescribed water level. Therefore, the oil contained in the blow-by gas can fall onto the cylinder head 40 after being stored to the bent region 222 of the oil collecting portion 220 to effectively prevent the oil from flowing backward to the inside of the flow path member 210.

Therefore, the cylinder head cover 101 according to an embodiment of the present invention can prevent the blow-by gas discharged through the gas discharge port 110 from containing oil to cause oil loss inside the engine 10.

In addition, the moving flow path 220 of an embodiment of the present invention may include a traveling flow path region 210 and a circling flow path region 202.

The travel channel region 201 may guide the movement of the blow-by gas in one direction from the inlet 211 to the gas outlet 100. Specifically, the travel flow path region 201 may be a region of the movement flow path 200 between the flow inlet 211 and the gas discharge port 110 in the entire movement flow path 200 between the upper portion of the flow path member 210 and the cover base 105.

For example, the oil collecting portion 220 may be disposed on the flow path member 210 forming the traveling flow path region 201.

The swirling flow path region 202 may be formed to extend in one direction from the gas discharge port 100 to the cover side surface portion 106 to move the blow-by gas passing through the travel flow path region 210. Specifically, the convoluted flow path region 202 may be the remaining region of the movement flow path 200 between the gas discharge port 110 and the cover body side surface portion 106 in the widthwise direction of the cover body 100 in the movement flow path 200 of the entirety between the upper portion of the flow path member 210 and the cover body base 105.

That is, the convoluted flow path region 202 may be guided such that, of the blow-by gas passing through the travel flow path region 201, the blow-by gas that is not discharged to the outside of the cylinder head cover 101 through the gas discharge port 110 is discharged through the gas discharge port 110 after colliding with the cover body side surface portion 106 in the width direction of the cover body 100 to change the direction. Therefore, the convoluted flow path region 202 can be disposed so as to be relatively adjacent to the cover side surface portion 106 in the width direction of the cover 100, compared to the inlet 211 of the flow path member 210.

For example, if only the straight traveling flow path region 201 from the inlet 211 to the gas outlet 110 is provided, the oil contained in the blow-by gas may not be sufficiently separated and discharged due to the formation of Laminar flow (luminal flow). However, by including the convoluted Flow path region 202 with the cylinder head cover 101 according to the embodiment of the present invention, the blow-by gas containing oil can be moved to the gas discharge port 110 after the direction is switched by collision of the convoluted Flow path region 202 extending from the gas discharge port 110 to the cover body side surface 106 in the width direction of the cover body 100 with the cover body side surface 106, and thus the oil contained in the blow-by gas is effectively separated as warm Flow (Turbulent Flow) is formed with such movement. Further, the blow-by gas whose direction is switched by colliding with the cover side surface portion 106 of the convoluted flow path region 202 collides with the blow-by gas moving from the inlet 211 to the gas outlet 110, so that the oil contained in the blow-by gas moving from the inlet 211 to the gas outlet 110 can be effectively separated.

That is, the convoluted flow path region 202 can change the flow of the blow-by gas including the oil that moves to the cover side surface portion 106 through the gas discharge port 110 to the warm flow by colliding with the cover side surface portion 106, and collide the blow-by gas that changes the direction by such collision with the cover side surface portion 106 with the blow-by gas that flows in through the inflow port 211 and passes through the travel flow path region 201, thereby efficiently separating the oil included in the blow-by gas and collecting it in the oil collecting portion 220.

In addition, as shown in fig. 2 and 6, the cylinder head cover 101 according to an embodiment of the present invention may include a plurality of fastening holes 150 and an airtight member insertion groove 160.

The cover body 100 may have a plurality of fastening holes 150 formed therein to be spaced apart from each other so as to be fastened to the cylinder head 40. A plurality of fastening holes 150 may be formed in the outer circumferential surface of the cover body 100 facing the cylinder head 40 so as to be spaced apart from each other.

As shown in fig. 1 and 2 and fig. 6, the airtight member insertion groove 160 may be formed on the cover 100. At least a part of the airtight member disposed between the cylinder head 40 and the cover body 100 can be inserted and disposed in the airtight member insertion groove 160. Also, the airtight member insertion groove 160 may be concavely formed along the outer circumferential surface of the cover body 100 facing the cylinder head 40.

The airtight member 50 may be a gasket or an O-ring (O-ring), for example.

Specifically, the airtight member insertion groove 160 may include an inner circumferential surface 161 of the airtight member insertion groove adjacent to the center of the cover body 100, and an outer circumferential surface of the airtight member insertion groove disposed relatively far from the center of the cover body 100 than the inner circumferential surface 161 of the airtight member insertion groove.

In the region where the fastening holes 150 are formed, the airtight member insertion groove 160 may be disposed such that an outer circumferential surface 162 of the airtight member insertion groove is adjacent to the center of the cover body 100 in the longitudinal direction, relative to the inner circumferential surface of the fastening holes 150.

The airtight member insertion groove 160 of the outer circumferential surface region of the cover body 100 having the fastening hole 150 formed therein may be disposed to be relatively adjacent to the inner side of the cover body 100, compared to the fastening hole 150. Specifically, a region of the inner circumferential surface of the fastening hole 150, which is most adjacent to the longitudinal center of the cover body 100, among the inner circumferential surfaces of the fastening hole 150, may be disposed relatively far from the longitudinal center of the cover body 100 than the outer circumferential surface 162 of the airtight member insertion groove 160.

The airtight member insertion groove 160 may be formed such that an outer circumferential surface 162 of the airtight member insertion groove is relatively distant from a longitudinal center of the cover body 100 in comparison with an outer circumferential surface 162 of the airtight member insertion groove in a region where the plurality of fastening holes 150 are formed.

The airtight member insertion groove 160 between the fastening hole 150 and the fastening hole 150 may be formed to the outside of the cover body 100, compared to the airtight member insertion groove 160 of the cover body 100 in which the fastening hole 150 is formed.

That is, the airtight member insertion groove 160 may be formed such that the airtight member insertion groove 160 is disposed adjacent to the inner side of the cover body 100, compared to the fastening holes 150, in the region where the fastening holes 150 are formed in the cylinder head cover 101, and the airtight member 50 is disposed outside the cylinder head cover 101, compared to the region where the fastening holes 150 are formed, in the region of the cylinder head cover 101 between the fastening holes 150 and the fastening holes 150.

In other words, the airtight member insertion groove 160 may be formed in the head cover 101 having the fastening holes 150 formed therein so as to be curved inward of the head cover 101 so as to be relatively adjacent to the fastening holes 150 on the inner side of the head cover 101, and may be formed in the head cover 101 between the fastening holes 150 and the fastening holes 150 so as to be adjacent to the outer side of the head cover 101 so as to be relatively adjacent to the curved sections.

Accordingly, as shown in fig. 1, even when the airtight member 50 is disposed between the cylinder head cover 101 and the cylinder head 40 and coupled, the airtight member 50 inserted into the airtight member insertion groove 160 between the fastening hole 150 and the fastening hole 150 can confirm the disposition and state of the airtight member 50 from the outside of the cover body 100. On the contrary, the airtight member insertion groove 160 on the region where the fastening hole 150 is formed is disposed on the inner side of the cover body 100 to be relatively adjacent, so that it is possible to prevent interference and maintain airtightness more effectively when fastening with a coupling member (not shown) penetrating to the fastening hole 150.

As shown in fig. 2, 6 and 7, the airtight member insertion groove 160 and the plurality of fastening holes 150 of the cylinder head cover 101 according to an embodiment of the present invention may be formed in the outer circumferential portion of the cover body 100. The airtight member insertion groove 160 and the plurality of fastening holes 150 may be formed on the outer circumferential portion of the cover body 100 to be spaced apart from each other. The outer peripheral portion of the cover 100 may be formed toward the cylinder head 40.

An outer circumferential portion of a region of the cover body 100 where the fastening hole 150 is formed to protrude toward a lower portion of the cover body 100 than an outer circumferential portion of the remaining region of the cover body 100 where only the airtight member insertion groove 160 is formed between the fastening hole 150 and the fastening hole 150.

Specifically, the outer circumferential part of a region of the cover body 100 where the fastening hole 150 is formed and the outer circumferential part of the remaining region of the cover body 100 where only the airtight member insertion groove 160 is formed between the fastening hole 150 and the fastening hole 150 may be formed to have a step.

Accordingly, when the fastening hole 150 is fastened to the cylinder head 40 by inserting a coupling member (not shown), the fastening hole can be brought into close contact with the cylinder head 40, and thus the fastening can be performed efficiently.

As shown in fig. 2, 8 and 9, the cylinder head cover 101 according to an embodiment of the present invention may further include a reinforcement portion 300.

The reinforcement 300 may be formed on the cover 100. That is, the reinforcement 300 may be formed to protrude from the inner side of the cover base 105 toward the cylinder head 40. The reinforcing part 300 may be formed in various forms such as a straight type, a lattice type, a radial type, a polygonal type, and a Honeycomb (Honeycomb).

Fig. 8 shows that the reinforcing portion 300 of the cylinder head cover 101 according to the embodiment of the present invention is formed in a Honeycomb (Honeycomb) pattern type. Specifically, the reinforcing part 300 may have a hexagonal honeycomb pattern type formed on the upper inner face of the cylinder head cover 101.

In addition, as shown in fig. 9, the length l of the reinforcement portion 300 of the cylinder head cover 101 according to an embodiment of the present invention may be formed relatively large compared to the width w of the reinforcement portion 300.

The length I of the reinforcement 300 may be a height protruding from the cylinder head cover 101. The width w of the reinforcing part 300 may be a thickness in a direction perpendicular to the height of the protrusion of the reinforcing part 300. The length I of the reinforcing part 300 may be formed relatively large compared to the width w of the reinforcing part 300 according to purposes.

The following describes a process of moving gas containing oil according to an embodiment of the present invention with reference to fig. 1 to 9.

The fuel injected by the injector is burned in the combustion chamber. The injected fuel undergoes an explosion stroke and thereby causes engine 10 to produce power. Further, a part of the combustion gas or unburned gas in the combustion chamber cannot be discharged from the engine 10 when the exhaust valve is opened, and remains. Such blow-by gas is collected in the cylinder head cover 101 disposed at the uppermost portion of the engine 10 because of its light weight. Further, the blow-by gas contains oil inside the engine 10.

The blow-by gas can flow into the movement flow path 200 through the inlet 211 (arrow in fig. 3). The blow-by gas containing the oil may move in the length direction of the flow path member 210 to cause at least a portion of the oil relatively heavier than the gas contained in the gas to fall onto the inner wall of the flow path member 210.

And, such oil is collected in the oil collecting portion 220 formed on the lower portion of the flow path member 210.

The blow-by gas from which oil is removed or which contains a part of the oil may be discharged to the outside of the engine 10 through the gas discharge port 110.

Further, the oil collected in the oil collecting portion 220 of the flow path member 210 may continue to be stored in the curved region 22.

Accordingly, the cylinder head cover 101 according to an embodiment of the present invention can prevent the blow-by gas that cannot be discharged and contains oil from being rapidly discharged from the engine 10 through the cylinder head cover 101.

In addition, the head cover 101 according to an embodiment of the present invention may be formed with the reinforcement 300.

While the embodiments of the present invention have been described with reference to the drawings, those skilled in the art will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof.

Therefore, the above-described embodiments should be understood as being illustrative in all aspects and not restrictive, and the scope of the present invention should be embodied by the claims to be described later, and should be construed as being that all modifications or variations derived from the meaning, scope and equivalent concept of the claims fall within the scope of the present invention.

Claims

1. A cylinder head cover that includes a cover body that is disposed above a cylinder head of an engine and collects blow-by gas containing oil, characterized by comprising:

a cover base disposed to face the upper portion of the cylinder head with a space therebetween;

a cover side surface portion extending from an edge of the cover base in the cylinder head direction and coupled to the cylinder head;

a cover inner space formed between the cover base and the cover side surface portion; and

a gas discharge port formed on the cover to guide discharge of the blow-by gas.

2. The cylinder head cover according to claim 1,

further comprising a movement flow path for dividing a region of the internal space of the cover body and guiding movement of the blow-by gas to the gas discharge port,

the movement flow path includes:

a flow path member disposed between the cover base and the cover side surface, at least a part of the edge of the flow path member being supported by the cover side surface; and

and a support part which supports the remaining edge of the flow path member and divides the inner space of the cover body.

3. The cylinder head cover according to claim 2,

the flow path member includes:

an inflow port formed in the flow path member and through which the blow-by gas flows; and

and an oil collecting portion which is disposed at a lower portion of the flow path member and which is capable of collecting oil contained in the blow-by gas flowing in through the inflow port and passing through the moving flow path.

4. The cylinder head cover according to claim 3,

the oil collecting portion includes:

an extension region formed to extend from the flow path member toward the cylinder head; and

and a curved region that is formed so as to curve from the extended region toward the flow path member.

5. The cylinder head cover according to claim 2,

the movement flow path is arranged along a longitudinal direction of the cover body formed to be long in one direction.

6. The cylinder head cover according to claim 3,

the movement flow path includes:

a travel flow path region that guides movement of the blow-by gas in one direction from the inlet port to the gas outlet port; and

and a swirling flow path region extending in one direction from the gas discharge port to the side surface of the cover body and moving the blow-by gas passing through the travel flow path region.

7. The cylinder head cover according to claim 2,

the support portion is integrally formed with the cover body.

8. The cylinder head cover according to claim 1,

the cylinder head further includes a reinforcement portion that is formed on the cover body and protrudes toward the cylinder head inside an upper portion of the cover body.

9. The cylinder head cover according to claim 8,

the reinforcing part is formed in a honeycomb pattern type.

10. The cylinder head cover according to claim 1,

further comprising:

a plurality of fastening holes formed in the cover body to be spaced apart from each other so as to be fastened to the cylinder head; and

an airtight member insertion groove formed in the cover body so that an airtight member disposed between the cylinder head and the cover body is inserted therein,

the airtight member insertion groove is disposed adjacent to the inside of the cover body in a region where the fastening holes are formed, and is disposed apart from the inside of the cover body in a region between the fastening holes in a region where the fastening holes are formed.

11. The cylinder head cover according to claim 10,

one region of the outer circumferential portion of the cover body, in which the plurality of fastening holes are formed, is formed to protrude toward a lower portion of the cover body than the remaining region between the plurality of fastening holes.