CN219605423U - Engine and vehicle - Google Patents

Abstract

The utility model provides an engine and a vehicle, wherein the engine comprises a cylinder cover and a cylinder head cover, and the cylinder cover comprises an air inlet channel and a connecting channel; one end of the connecting channel is communicated with the air inlet channel, and the other end of the connecting channel extends to the upper end face of the cylinder cover; the cylinder head cover includes: the cylinder cover comprises a cylinder cover body, a pressure regulating valve and a cover plate, wherein the cylinder cover body is covered on the upper end face of the cylinder cover; the cylinder head cover body is provided with an oil-gas separation cavity; the pressure regulating valve is connected to the cylinder head cover body and is positioned above the air inlet channel; the air inlet of the pressure regulating valve is connected with the air outlet of the oil-gas separation cavity, and the air outlet of the pressure regulating valve is provided with a one-way valve; the cover plate is arranged on one side of the cylinder head cover body, which is close to the air inlet channel, and a blowby gas cavity is formed between the cover plate and the cylinder head cover body and is respectively communicated with the one-way valve and the connecting channel. The utility model can solve the problem of low integration level of the cylinder head cover.

Description

Engine and vehicle

Technical Field

The utility model relates to the technical field of engines, in particular to an engine and a vehicle.

Background

In the related art, a positive crankcase ventilation system is arranged on a cylinder head cover of an engine, and can introduce mixed gas such as atomized gasoline, atomized engine oil, water vapor, waste gas and the like which are blown into a crankcase into a combustion chamber of the engine for combustion, so that the emission of harmful gas of an automobile is reduced.

At present, the mixture is discharged from a pressure regulating valve of a positive crankcase ventilation system, and the mixture is usually introduced into a connecting pipeline, then introduced into an intake manifold and introduced into an engine air inlet passage, and finally introduced into a combustion chamber of an engine. In order to achieve positive crankcase ventilation, complex connecting lines are required. Therefore, the integration of the cylinder head cover is not high.

Disclosure of Invention

The utility model provides an engine and a vehicle, which can solve the problem of low integration level of a cylinder head cover.

In a first aspect, the present utility model provides an engine comprising a cylinder head and a cylinder head cover, the cylinder head comprising an intake passage and a connecting passage; one end of the connecting channel is communicated with the air inlet channel, and the other end of the connecting channel extends to the upper end face of the cylinder cover;

the cylinder head cover includes:

the cylinder head cover body is covered on the upper end face of the cylinder head; the cylinder head cover body is provided with an oil-gas separation cavity;

the pressure regulating valve is connected to the cylinder head cover body and is positioned above the air inlet channel; the air inlet of the pressure regulating valve is connected with the air outlet of the oil-gas separation cavity, and the air outlet of the pressure regulating valve is provided with a one-way valve;

the cover plate is arranged on one side, close to the air inlet channel, of the cylinder head cover body, a blow-by gas cavity is formed between the cover plate and the cylinder head cover body, and the blow-by gas cavity is respectively communicated with the one-way valve and the connecting channel.

According to the technical scheme, the cover plate is arranged on one side, close to the air inlet, of the cylinder head cover body, so that the air-escaping cavity is formed between the cover plate and the cylinder head cover body, and the connecting channel communicated with the air inlet is formed in the cylinder cover, so that mixed gas of the crankcase can be directly led into the air inlet of the cylinder head through the oil-gas separation cavity, the pressure regulating valve, the air-escaping cavity and the connecting channel of the cylinder head cover body, and the mixed gas is combusted in the combustion chamber of the engine; according to the scheme, the complex pipeline for guiding the mixed gas from the pressure regulating valve to the air inlet channel in the arrangement of the cylinder head cover can be avoided, namely, a channel formed by the complex pipeline can be integrated on the cylinder head cover, and the complex pipeline is omitted, so that the arrangement of the cylinder head cover is compact, and the integration level is improved; therefore, the problem of low integration level of the cylinder head cover can be solved through the scheme.

With reference to the first aspect, in some possible implementation manners, the engine is a multi-cylinder engine, and the air inlet channel of each cylinder of the multi-cylinder engine is correspondingly communicated with one connecting channel;

the cylinder head cover body is provided with an air inlet and a plurality of air outlets, and the air inlet is communicated with the one-way valve; the exhaust holes are in one-to-one correspondence with the connecting channels, one end of each exhaust hole is communicated with the corresponding connecting channel, and the other end of each exhaust hole is communicated with the corresponding channeling cavity.

In the technical scheme, an air inlet is formed in the cylinder head cover body and is connected with an air outlet of the pressure regulating valve through a one-way valve; the multi-cylinder engine is characterized by further comprising a plurality of exhaust holes, wherein the exhaust holes are correspondingly connected with the connecting channels, and the mixed gas can be respectively led into air inlets of the cylinders, so that the multi-cylinder engine can work stably.

With reference to the first aspect and the foregoing implementation manner, a partition board that divides the blowby gas cavity into an upper cavity and a lower cavity is provided on a side wall of the cover plate and/or a side wall of the cylinder head cover body; the upper chamber is communicated with the air inlet hole; the lower chamber is communicated with the exhaust hole;

the partition plate is provided with a connecting hole for communicating the upper cavity and the lower cavity; the cross-sectional area of the connecting hole is positively correlated with the distance from the axis of the connecting hole to the axis of the air intake hole.

In the technical scheme, the connecting holes for communicating the upper cavity and the lower cavity are formed in the partition plate, the farther the connecting holes are from the air inlet holes, the larger the aperture of the connecting holes is, so that the gas mixture entering each cylinder is more uniform, and the working stability of the engine is further improved.

With reference to the first aspect and the implementation manner, the ratio of the cross-sectional areas of any two connecting holes is equal to the ratio of the distances between the axes of the two connecting holes and the axis of the air inlet hole.

According to the technical scheme, the uniformity of the mixed gas entering each cylinder of the engine through the connecting hole can be improved, and the working stability of the engine is further improved.

With reference to the first aspect and the implementation manner, the engine further includes a cylinder block and an oil pan;

the cylinder head cover further comprises a dipstick mounting seat arranged on the cylinder head cover body and a dipstick arranged on the dipstick mounting seat;

the dipstick mounting seat is provided with a first through hole; the cylinder cover is provided with a second through hole communicated with the first through hole; the cylinder body is provided with a third through hole which is communicated with the second through hole and the oil pan; one end of the oil level gauge penetrates through the first through hole, the second through hole and the third through hole to extend into the oil pan.

In the technical scheme, the first through hole is formed in the oil dipstick mounting seat, and the second through hole and the third through hole are formed in the cylinder cover and the cylinder body, so that the oil dipstick mounting seat and the oil dipstick can be integrated on the cylinder cover, an additional pipeline is omitted, and the integration level of the cylinder cover can be further improved.

With reference to the first aspect and the foregoing implementation manner, the cylinder head cover further includes a plurality of ignition coils that are disposed on the cylinder head cover body at intervals;

the pressure regulating valve is close to the ignition coils and is positioned at one side of a gap between two adjacent ignition coils.

In the technical scheme, the pressure regulating valve and the ignition coils are arranged in a crossed mode, namely, the pressure regulating valve is arranged on one side of a gap between the two ignition coils, so that the arrangement of the cylinder head cover is more compact, and the compactness of the cylinder head cover is improved.

With reference to the first aspect and the implementation manner, the cylinder head cover further includes an oil-gas separator;

the oil-gas separator is arranged in the oil-gas separation cavity.

According to the technical scheme, the oil separator can separate engine oil in the mixed gas discharged from the crankcase, so that the engine oil discharged from the crankcase to the outside of the engine is reduced, the engine oil leakage is reduced, and the environmental pollution is reduced.

With reference to the first aspect and the implementation manner described above, the pressure regulating valve is a diaphragm PCV valve.

In the above technical scheme, the diaphragm type PCV valve generally comprises a valve cover, a valve cover mounting seat, a diaphragm, a tray, a spring and the like, and has the characteristic of simple structure.

With reference to the first aspect and the implementation manner of the first aspect, the multi-cylinder engine is an in-line four-cylinder engine.

In the technical scheme, the in-line four-cylinder engine has the advantages of low manufacturing cost, compact structure, high stability, good low-speed torque characteristic, low fuel consumption and the like.

In a second aspect, the utility model also provides a vehicle comprising an engine as described in any one of the first aspects above.

Drawings

Fig. 1 is a schematic structural view of a cylinder head cover according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the construction of the cover plate in the cylinder head cover of FIG. 1;

FIG. 3 is an enlarged schematic view of a portion I of the cylinder head cover of FIG. 1;

FIG. 4 is a schematic view of the cylinder head cover of FIG. 1 from one view (bottom view);

FIG. 5 is a schematic view of the cylinder head cover of FIG. 1 from another perspective;

fig. 6 is a plan view of the joint of the cover plate and the head cover body in fig. 1.

Reference numerals illustrate:

1-a cylinder head cover;

11-a cylinder head cover body; 111-an oil-gas separation chamber; 112-an air inlet; 113-an exhaust hole;

12-a pressure regulating valve;

13-cover plate; 131-blowby chamber; 132-upper chamber; 133-separator; 1331—a connection hole; 134-lower chamber;

14-an oil rule;

15-ignition coil.

Detailed Description

The technical scheme of the utility model will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present utility model, unless otherwise indicated, "/" means or, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and furthermore, in the description of the embodiments of the present utility model, "plural" means two or more than two.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the related art, in order to achieve forced ventilation of the crankcase, complicated connecting pipes are required to be arranged. Therefore, the pipeline structure of the cylinder head cover is loose, and the integration level is not high.

In order to solve the technical problems, an embodiment of the utility model provides an engine and a vehicle. An engine according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, 3 to 5, first, a first aspect of the present utility model proposes an engine including a cylinder head and a cylinder head cover 1, the cylinder head including an intake passage and a connecting passage; one end of the connecting channel is communicated with the air inlet channel, and the other end of the connecting channel extends to the upper end face of the cylinder cover.

The cylinder head cover 1 includes a head cover body 11, a pressure regulating valve 12, and a cover plate 13.

The cylinder head cover body 11 is covered on the upper end surface of the cylinder head; the head cover body 11 is provided with an oil-gas separation chamber 111.

The pressure regulating valve 12 is connected to the cylinder head cover body 11 and is positioned above the air inlet channel; the air inlet of the pressure regulating valve 12 is connected with the air outlet of the oil-gas separation cavity 111, and the air outlet of the pressure regulating valve 12 is provided with a one-way valve.

The cover plate 13 is arranged on one side of the cylinder head cover body 11, which is close to the air inlet channel, and a blow-by cavity 131 is formed between the cover plate 13 and the cylinder head cover body 11, and the blow-by cavity 131 is communicated with the one-way valve and the connecting channel.

It is understood that the engine also includes a cylinder block or the like. A cylinder head is mounted on the cylinder block to seal the cylinder from above. The lower end face of the cylinder cover and the cylinder wall in the cylinder body form a combustion chamber. The cylinder cover is also provided with an air inlet passage for introducing fresh air and an exhaust passage for exhausting combusted exhaust gas. The cylinder head in the embodiment of the utility model is different from the conventional cylinder head in that a connecting passage which is communicated with the air inlet passage and extends to the upper end surface of the cylinder head is also formed on the cylinder head. The connecting passage is used for guiding the mixture discharged from the pressure regulating valve 12 into an intake passage, so that the mixture is finally guided into an engine combustion chamber for combustion.

The cylinder head cover 1 can cover and seal the cylinder head, keep engine oil inside the engine and isolate it from air, and also isolate contaminants such as dirt and moisture from the outside. In addition to the above functions, the cylinder head cover 1 in the embodiment of the present utility model is provided with an oil-gas separation chamber 111 (see fig. 4) on the cylinder head cover body 11, and the cylinder head cover body 11 is integrated with a pressure regulating valve 12, the pressure regulating valve 12 being mounted on the cylinder head cover body 11 above the intake duct. The air inlet of the pressure regulating valve 12 is connected with the air outlet of the oil-gas separation cavity 111 (see fig. 4, the arrow direction in fig. 4 is the flowing direction of the mixed gas), the air outlet of the pressure regulating valve 12 is provided with a one-way valve, and the one-way valve can ensure that the mixed gas can only flow from the pressure regulating valve 12 to the air inlet of the cylinder cover, and prevent the mixed gas from flowing backwards from the air inlet of the cylinder cover to the pressure regulating valve 12.

It should be noted that, in the embodiment of the present utility model, the cover plate 13 is further connected to the side of the cylinder head cover body 11 near the air intake duct (see fig. 1), for example, when the air intake duct is disposed on the left side of the cylinder head, the cover plate 13 is also disposed on the left side of the cylinder head cover body 11, that is, the air intake duct and the cover plate 13 are both located on the same side of the engine. This makes it possible to form a blow-by gas chamber 131 (see fig. 2 and 5, the arrow direction in fig. 5 being the flow direction of the mixture) that accommodates the mixture between the cover plate 13 and the head cover body 11. The blowby gas cavity 131 is communicated with the one-way valve and the connecting channel, so that the mixed gas can be directly led into the air inlet channel of the cylinder cover through the blowby gas cavity 131 and the connecting channel of the cylinder cover, and finally burnt in the combustion chamber.

In the above technical solution, by arranging the cover plate 13 on the side of the cylinder head cover body 11 close to the air inlet channel, the blowby chamber 131 is formed between the cover plate 13 and the cylinder head cover body 11, and the connecting channel communicated with the air inlet channel is formed on the cylinder head, the mixed gas of the crankcase can be directly led into the air inlet channel of the cylinder head through the oil-gas separation chamber 111, the pressure regulating valve 12, the blowby chamber 131 and the connecting channel of the cylinder head cover body 11, so that the mixed gas burns in the combustion chamber of the engine; the scheme can avoid arranging a complex pipeline for guiding the mixed gas from the pressure regulating valve 12 to the air inlet passage in the cylinder head cover 1, namely, a channel formed by the complex pipeline can be integrated on the cylinder head cover 1 to omit the complex pipeline, so that the cylinder head cover 1 can be compactly arranged and the integration level can be improved; therefore, the problem of low integration level of the cylinder head cover 1 can be solved through the scheme.

Referring to fig. 1, 3 and 5, in some embodiments of the present utility model, the engine is a multi-cylinder engine, and the air inlet of each cylinder of the multi-cylinder engine is correspondingly communicated with one connecting channel.

The cylinder head cover body 11 is provided with an air inlet 112 and a plurality of air outlet 113, and the air inlet 112 is communicated with the one-way valve; the plurality of exhaust holes 113 are in one-to-one correspondence with the plurality of connecting channels, one end of each exhaust hole 113 is communicated with the corresponding connecting channel, and the other end is communicated with the blow-by chamber 131.

In a multi-cylinder engine, it is necessary to introduce a mixture into the intake ports of a plurality of cylinders, that is, into a plurality of connecting passages communicating with the intake ports of the cylinder head, in order to stabilize the engine operation. And the pressure regulating valve 12 has only one air outlet which is connected to the one-way valve.

In the embodiment of the utility model, an air inlet 112 is arranged on a cylinder head cover body 11, and the air inlet 112 is connected with an air outlet of a pressure regulating valve 12 through a one-way valve; the multi-cylinder engine is further provided with a plurality of exhaust holes 113, and the exhaust holes 113 are correspondingly connected with a plurality of connecting channels, so that the mixed gas can be respectively led into air inlets of a plurality of cylinders, and the multi-cylinder engine can work stably.

Referring to fig. 1 to 3, in some embodiments of the present utility model, a sidewall of the cover plate 13 and/or a sidewall of the head cover body 11 is provided with a partition plate 133 dividing the blowby chamber 131 into an upper chamber 132 and a lower chamber 134; the upper chamber 132 communicates with the air intake aperture 112; the lower chamber 134 communicates with the exhaust hole 113.

The partition plate 133 is provided with a connecting hole 1331 for communicating the upper chamber 132 and the lower chamber 134; the cross-sectional area of the connecting hole 1331 is positively correlated with the distance from the axis of the connecting hole 1331 to the axis of the air intake hole 112.

The partition 133 is used to divide the blowby chamber 131 into an upper chamber 132 and a lower chamber 134. After the mixed gas is introduced into the blowby chamber 131, the mixed gas firstly enters the upper chamber 132 and then enters the lower chamber 134 through the connecting hole 1331, so that the mixed gas in the lower chamber 134 has relatively stable pressure. Wherein, the partition plate 133 may be disposed on the side wall of the cover plate 13, or may be disposed on the side wall of the cylinder head cover body 11, or may be disposed on the side wall of the cover plate 13 and the side wall of the cylinder head cover body 11, respectively, as shown in fig. 1 and 2, and then the partial partition plate 133 on the side wall of the cover plate 13 and the partial partition plate 133 on the side wall of the cylinder head cover body 11 are spliced into a complete partition plate 133.

In addition, in the embodiment of the present utility model, the partition 133 is provided with the connecting hole 1331 for connecting the upper chamber 132 and the lower chamber 134, and the farther the connecting hole 1331 is from the air inlet 112, the larger the aperture of the connecting hole 1331 is, so that the air-fuel mixture entering each cylinder is more uniform, and the working stability of the engine is further improved.

Referring to fig. 3 and 6, in some embodiments of the present utility model, the ratio of the cross-sectional areas of any two of the connection holes 1331 is equal to the ratio of the distances of the axes of the two connection holes 1331 from the axis of the air intake hole 112, respectively.

It should be noted that the air intake holes 112 may be located at one side of all the connection holes 1331, or may be located between two of the connection holes 1331.

For example, in fig. 6, the number of the connection holes 1331 is 4, and S1, S2, S3, and S4 are respectively. The intake holes 112 are located at one side of all the connection holes 1331. At this time, the distances from S1, S2, S3, S4 to the rightmost air inlet 112 are L1, L2, L3, L4, respectively. In the embodiment of the present utility model, the cross-sectional areas of the 4 connecting holes 1331 (S1, S2, S3, S4) are not the same, but are non-fixed values, i.e., s2/s1=l2/L1; s3/s1=l3/L1; S4/s1=l4/L1. By this arrangement, the uniformity of the mixture gas entering each cylinder of the engine through the connecting hole 1331 can be improved, and the operation stability of the engine can be further improved.

In some embodiments of the utility model, the engine further comprises a cylinder block and an oil pan.

The cylinder head cover 1 further comprises a dipstick mount arranged on the cylinder head cover body 11 and a dipstick 14 arranged on the dipstick mount.

The dipstick mounting seat is provided with a first through hole; the cylinder cover is provided with a second through hole communicated with the first through hole; the cylinder body is provided with a third through hole which is communicated with the second through hole and the oil pan.

One end of the oil gauge 14 extends into the oil pan through the first through hole, the second through hole, and the third through hole.

The first through hole of the dipstick mounting seat can be formed by machining, and the second through hole and the third through hole can be formed on the cylinder cover and the cylinder body in a casting mode. In addition, the first, second, and third through holes may be coaxially disposed to reduce the resistance of the oil rule 14 to extending into the oil pan. And the first through hole can be inclined relative to the upper end face of the cylinder cover body, so that when the automobile body is prevented from being inclined, the oil level in the oil pan is changed, and the measuring result of the oil level is influenced.

Compared with the prior art that the independent pipelines extending into the oil pan and the oil dipstick mounting seat and the oil dipstick 14 mounted outside the cylinder head cover 1 are arranged, according to the scheme provided by the embodiment of the utility model, the oil dipstick mounting seat is provided with the first through hole, the cylinder head and the cylinder body are provided with the second through hole and the third through hole, and the oil dipstick mounting seat and the oil dipstick 14 can be integrated on the cylinder head cover 1, so that additional pipelines are omitted, and the integration level of the cylinder head cover 1 can be further improved.

In some embodiments of the present utility model, as shown in connection with fig. 1, the cylinder head cover 1 further includes a plurality of ignition coils 15 provided at intervals on the cylinder head cover body 11.

The pressure regulating valve 12 is located close to the ignition coils 15 and on one side of the gap between adjacent two ignition coils 15.

In the embodiment of the utility model, the pressure regulating valve 12 and the ignition coils 15 are arranged in a crossing way, namely, the pressure regulating valve 12 is arranged at one side of a gap between the two ignition coils 15, so that the arrangement of the cylinder head cover 1 is more compact, and the compactness of the cylinder head cover 1 is improved.

In some embodiments of the utility model, the cylinder head cover 1 further comprises an oil-gas separator; the oil-gas separator is provided in the oil-gas separation chamber 111.

The oil-gas separator may be disposed at an air inlet end of the oil-gas separation chamber 111, or may be disposed at an air outlet end of the oil-gas separation chamber 111. The oil-gas separator can separate engine oil in the mixed gas discharged from the crankcase, reduce the emission of the engine oil from the crankcase to the outside of the engine, reduce the leakage of the engine oil and reduce the environmental pollution.

In some embodiments of the present utility model, pressure regulating valve 12 is a diaphragm PCV valve.

The diaphragm PCV valve generally comprises a valve cover, a valve cover mounting seat, a diaphragm, a tray, a spring and the like, and has the characteristic of simple structure.

In some embodiments of the utility model, the multi-cylinder engine is an in-line four-cylinder engine. Of course, the multi-cylinder engine can be selected as a six-cylinder or eight-cylinder engine according to design and manufacturing requirements.

The four cylinders of the in-line four-cylinder engine are all arranged side by side to form a plane according to the same angle, the cylinder body and the crankshaft are quite simple in structure, and the in-line four-cylinder engine has the advantages of being low in manufacturing cost, compact in structure, high in stability, good in low-speed torque characteristic, low in fuel consumption and the like by using one cylinder cover.

Next, a second aspect of the utility model also proposes a vehicle comprising an engine according to any of the embodiments of the first aspect described above.

The vehicle provided by the utility model has all the beneficial effects of the engine because the engine is provided with the embodiment. The engine is described in detail above and will not be described again here.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. An engine, characterized by comprising a cylinder head and a cylinder head cover (1), the cylinder head comprising an intake duct and a connecting channel; one end of the connecting channel is communicated with the air inlet channel, and the other end of the connecting channel extends to the upper end face of the cylinder cover;

the cylinder head cover (1) includes:

a cylinder head cover body (11), wherein the cylinder head cover body (11) is covered on the upper end surface of the cylinder head; the cylinder head cover body (11) is provided with an oil-gas separation cavity (111);

a pressure regulating valve (12), wherein the pressure regulating valve (12) is connected to the cylinder head cover body (11) and is positioned above the air inlet channel; an air inlet of the pressure regulating valve (12) is connected with an air outlet of the oil-gas separation cavity (111), and an air outlet of the pressure regulating valve (12) is provided with a one-way valve;

the cover plate (13), the cover plate (13) set up in the cylinder head cover body (11) be close to one side of intake duct, cover plate (13) with form between cylinder head cover body (11) and blow-by gas chamber (131), blow-by gas chamber (131) intercommunication the check valve with the connecting channel.

2. The engine of claim 1, wherein the engine is a multi-cylinder engine, and the inlet channel of each cylinder of the multi-cylinder engine is correspondingly communicated with one connecting channel;

the cylinder head cover body (11) is provided with an air inlet hole (112) and a plurality of air outlet holes (113), and the air inlet hole (112) is communicated with the one-way valve; the exhaust holes (113) are in one-to-one correspondence with the connecting channels, one end of each exhaust hole (113) is communicated with the corresponding connecting channel, and the other end of each exhaust hole is communicated with the corresponding blowby cavity (131).

3. The engine according to claim 2, characterized in that a partition plate (133) that partitions the blowby gas chamber (131) into an upper chamber (132) and a lower chamber (134) is provided to a side wall of the cover plate (13) and/or a side wall of the head cover body (11); the upper chamber (132) is communicated with the air inlet hole (112); the lower chamber (134) is communicated with the exhaust hole (113);

a connecting hole (1331) for communicating the upper chamber (132) and the lower chamber (134) is formed in the partition plate (133); the cross-sectional area of the connecting hole (1331) is positively correlated with the distance from the axis of the connecting hole (1331) to the axis of the air inlet hole (112).

4. An engine according to claim 3, wherein the ratio of the cross-sectional areas of any two of the connecting holes (1331) is equal to the ratio of the distances of the axes of the two connecting holes (1331) from the axis of the intake hole (112), respectively.

5. The engine of claim 1, further comprising a cylinder block and an oil pan;

the cylinder head cover (1) further comprises a dipstick mounting seat arranged on the cylinder head cover body (11) and a dipstick (14) arranged on the dipstick mounting seat;

the dipstick mounting seat is provided with a first through hole; the cylinder cover is provided with a second through hole communicated with the first through hole; the cylinder body is provided with a third through hole which is communicated with the second through hole and the oil pan; one end of the oil level gauge (14) penetrates through the first through hole, the second through hole and the third through hole to extend into the oil pan.

6. The engine according to claim 2, wherein the cylinder head cover (1) further includes a plurality of ignition coils (15) provided at intervals on the cylinder head cover body (11);

the pressure regulating valve (12) is close to the ignition coils (15) and is positioned at one side of a gap between two adjacent ignition coils (15).

7. The engine according to claim 1, characterized in that the cylinder head cover (1) further comprises an oil-gas separator;

the oil-gas separator is arranged in the oil-gas separation cavity (111).

8. The engine of claim 1, wherein the pressure regulating valve (12) is a diaphragm PCV valve.

9. The engine of claim 2, wherein the multi-cylinder engine is an in-line four-cylinder engine.

10. A vehicle comprising an engine as claimed in any one of claims 1 to 9.