CN112177792A

CN112177792A - Integrated exhaust manifold cylinder head and cylinder

Info

Publication number: CN112177792A
Application number: CN202011050418.5A
Authority: CN
Inventors: 朱玉; 徐亚飞; 张镇; 昂亮
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-01-05
Anticipated expiration: 2040-09-29
Also published as: CN112177792B

Abstract

The disclosure relates to an integrated exhaust manifold cylinder cover and a cylinder, and belongs to the field of automobiles. The integrated exhaust manifold cylinder head includes a body. The main body is provided with a plurality of groups of manifold exhaust holes which are arranged along a straight line, the plurality of groups of manifold exhaust holes are used for being communicated with a plurality of cylinder exhaust holes on a cylinder body of a cylinder in a one-to-one correspondence manner, the main body is further provided with a plurality of first cooling liquid channels and at least one second cooling liquid channel, each first cooling liquid channel is provided with a first inlet and a first outlet, each second cooling liquid channel is provided with a second inlet and a second outlet, the plurality of first inlets of the plurality of first cooling liquid channels are used for being communicated with a plurality of third cooling liquid channels in the side wall of the cylinder body in a one-to-one correspondence manner, and at least one second inlet of the at least one second cooling liquid channel is used for being communicated with at least one fourth cooling liquid channel outside the side wall of the cylinder. The cooling liquid flows in the second cooling liquid channel, the cooling effect is increased, an auxiliary water jacket is not required to be arranged, and the weight of the engine is reduced.

Description

Integrated exhaust manifold cylinder head and cylinder

Technical Field

The present disclosure relates to the field of automobiles, and more particularly, to an integrated exhaust manifold cylinder head and cylinder.

Background

The exhaust manifold is used for exhaust of the engine. An Integrated Exhaust Manifold (IEM) cylinder head is a cylinder head of an engine Integrated with an Exhaust Manifold, i.e. an Exhaust Manifold channel is cast on the Exhaust side of the cylinder head, so that the Exhaust Manifold becomes a part of the cylinder head.

A cooling channel surrounding the exhaust manifold is arranged in the integrated exhaust manifold cylinder cover, cooling liquid flows through the cooling channel to cool the cylinder cover, and for a large-displacement engine, the exhaust temperature of the engine is high, so that the temperature of the cylinder cover is high. The cooling channels are of limited volume and are not sufficient to provide effective cooling of the cylinder head. In the related technology, an auxiliary water jacket is manufactured, cooling channels are also arranged in the auxiliary water jacket, the auxiliary water jacket is connected with the integrated exhaust manifold cylinder cover, and cooling liquid simultaneously flows through the cooling channels in the integrated exhaust manifold cylinder cover and the cooling channels in the auxiliary water jacket to cool the engine, so that the cooling effect is improved.

However, the auxiliary water jacket increases the weight of the engine, and is not favorable for the light-weight design of the engine.

Disclosure of Invention

The disclosed embodiments provide an integrated exhaust manifold cylinder head and cylinder that may reduce the weight of an engine. The technical scheme is as follows:

in one aspect, the present disclosure provides an integrated exhaust manifold cylinder head comprising:

a main body, wherein a plurality of groups of manifold exhaust holes are arranged on the main body along a straight line and are used for being communicated with a plurality of cylinder exhaust holes on the cylinder body of the cylinder in a one-to-one correspondence manner,

the main body is further provided with a plurality of first cooling liquid channels and at least one second cooling liquid channel, each first cooling liquid channel is provided with a first inlet and a first outlet, each second cooling liquid channel is provided with a second inlet and a second outlet, the plurality of first inlets of the plurality of first cooling liquid channels are communicated with the plurality of third cooling liquid channels in the side wall of the cylinder body in a one-to-one correspondence mode, and the at least one second inlet of the at least one second cooling liquid channel is communicated with the at least one fourth cooling liquid channel outside the side wall of the cylinder body in a one-to-one correspondence mode.

In one implementation of the disclosed embodiment, the body includes:

the first outlet of the first cooling liquid channel and the second outlet of the second cooling liquid channel are both positioned on the upper sheet body;

the lower sheet body is connected with the upper sheet body, and the first inlet of the first cooling liquid channel and the second inlet of the second cooling liquid channel are both positioned on the lower sheet body.

In one implementation of the disclosed embodiment, the lower sheet includes:

a first portion coupled to the cylinder, the plurality of sets of manifold exhaust orifices each being located on the first portion, a first inlet of the first coolant channel and a second inlet of the second coolant channel each being located on the first portion;

a second portion connected to the first portion, the bodies of the plurality of first coolant channels being located on the second portion;

a third portion connected to the first portion and the second portion, respectively, the at least one second coolant channel being located on the third portion;

wherein the second portion and the third portion are both connected to the upper sheet.

In one implementation of the embodiment of the present disclosure, a of the plurality of first coolant passages corresponds to the third coolant passage located on the exhaust side of the cylinder, the remaining B of the plurality of first coolant passages corresponds to the third coolant passage located on the intake side of the cylinder, a and B are positive integers, and a is greater than B.

In one implementation of the disclosed embodiment, the total area of the cross-sections of a number of the first coolant channels is greater than the total area of the cross-sections of B number of the first coolant channels.

In one implementation of the disclosed embodiment, the main body has one cooling fluid outlet, and the first outlet and the second outlet are both communicated with the one cooling fluid outlet.

In one implementation of the disclosed embodiment, a cylinder head coolant passage is further provided in the face of the upper plate body, the cylinder head coolant passage communicating with the first coolant passage.

In another aspect, the present disclosure provides a cylinder comprising a cylinder block and an integrated exhaust manifold head as described in any of the above aspects.

In one implementation of the disclosed embodiment, the at least one fourth coolant passage is located on an exhaust side of the cylinder.

In one implementation manner of the embodiment of the present disclosure, the cylinder body includes a first cylinder exhaust hole, a second cylinder exhaust hole, a third cylinder exhaust hole and a fourth cylinder exhaust hole, which are sequentially arranged, and the at least one fourth cooling liquid channel is located at an outer side of a junction of the second cylinder exhaust hole and the third cylinder exhaust hole.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

exhaust gas in the cylinder is discharged to a manifold exhaust hole of the main body of the integrated exhaust manifold cylinder head through a cylinder exhaust hole and is discharged through the manifold exhaust hole. Because the temperature of waste gas is higher, waste gas gives integrated exhaust manifold cylinder cap heat transfer, can make whole exhaust manifold cylinder cap temperature rise, need cool down the exhaust manifold cylinder cap, avoids the high temperature of exhaust manifold cylinder cap to cause the exhaust manifold cylinder cap to damage. In the disclosed embodiment, the coolant flows through a plurality of third coolant channels in the side wall of the cylinder block to the first inlet of the first coolant channel, and the coolant flows out through the first outlet of the first coolant channel. Meanwhile, the cooling liquid flows to a second inlet of the second cooling liquid channel through a fourth cooling liquid channel outside the side wall of the cylinder body, and the cooling liquid flows out through a second outlet of the fourth cooling liquid channel. When the cooling liquid flows in the integrated exhaust manifold cylinder cover, the heat of the exhaust manifold cylinder cover is taken away, so that the temperature of the integrated exhaust manifold cylinder cover is reduced, and the integrated exhaust manifold cylinder cover is cooled. The second cooling liquid channels which can be communicated with the at least one fourth cooling liquid channel outside the side wall of the cylinder body in a one-to-one correspondence mode are added, and the second cooling liquid channels are equivalent to the cooling channels in the auxiliary water jacket in the related art, so that the auxiliary water jacket does not need to be separately arranged, the second cooling liquid channels only need to be arranged outside the side wall of the integrated exhaust manifold cylinder cover, and the weight of the engine is reduced compared with the situation that the auxiliary water jacket is separately manufactured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an integrated exhaust manifold cylinder head provided by an embodiment of the present disclosure;

FIG. 2 is a bottom view of a lower plate provided by embodiments of the present disclosure;

FIG. 3 is a schematic illustration of a partial structure of an integrated exhaust manifold cylinder head provided by an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a cylinder provided in the embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of an integrated exhaust manifold cylinder head provided by an embodiment of the disclosure. Referring to fig. 1, the integrated exhaust manifold head 100 includes: a main body 10. The main body 10 is provided with a plurality of groups of manifold exhaust holes 101, the plurality of groups of manifold exhaust holes 101 are arranged along a straight line, the plurality of groups of manifold exhaust holes 101 are used for being in one-to-one correspondence communication with a plurality of cylinder exhaust holes 201 on a cylinder body 200 of a cylinder, the main body 10 is further provided with a plurality of first cooling liquid channels 102 and at least one second cooling liquid channel 103, the first cooling liquid channels 102 are provided with first inlets 121 and first outlets 122, the second cooling liquid channels 103 are provided with second inlets 131 and second outlets 132, the plurality of first inlets 121 of the plurality of first cooling liquid channels 102 are used for being in one-to-one correspondence communication with a plurality of third cooling liquid channels 202 in a side wall of the cylinder body 200, and the at least one second inlet 131 of the at least one second cooling liquid channel 103 is used for being in one-to-one correspondence communication with at least one fourth cooling liquid channel.

In the embodiment of the present disclosure, the integrated exhaust manifold cylinder cover 100 has an irregular three-dimensional structure, and the specific structure of the integrated exhaust manifold cylinder cover 100 can be made according to the specific structure of the cylinder.

In the disclosed embodiment, the high temperature resistance value of the body 10 needs to be greater than the maximum temperature of the exhaust gas in order to prevent the body 10 from being damaged in a continuous high temperature environment.

Illustratively, the material of the body 10 may be a high temperature resistant metal, such as stainless steel or aluminum. Of course, the material of the main body 10 may be other materials, which is not limited in this disclosure.

In the embodiment of the disclosure, the body has a plurality of cooling liquid channels (a first cooling liquid channel and a second cooling liquid channel) therein, and when the cooling liquid flows in the cooling liquid channels, the cooling liquid takes away heat of the body, so that the temperature of the body is reduced. At the same time, the main body can be in contact with other accessories in the cylinder, and although the temperature of the cooling liquid is increased, the temperature of the cooling liquid is lower than that of the other accessories in the cylinder, so that the cooling liquid can cool the other accessories in the cylinder.

For example, the cooling liquid can also cool the flange connected to the integrated exhaust manifold cylinder head 100, so as to prevent the flange from being damaged due to overhigh temperature and affecting the operation of the whole automobile.

In the disclosed embodiment, the coolant may be water, so these coolant passages may also be referred to as water jackets. Of course, in other embodiments, other cooling liquids, such as lubricating oil, may be used.

Referring again to fig. 1, the main body 10 includes: an upper panel 104 and a lower panel 105. The first outlet 122 of the first coolant channel 102 and the second outlet 132 of the second coolant channel 103 are both located on the upper plate 104. The lower plate 105 is connected to the upper plate 104, and the first inlet 121 of the first coolant channel 102 and the second inlet 131 of the second coolant channel 103 are both located on the lower plate 105.

In the embodiment of the present disclosure, the main body 10 is distributed into two parts, namely, the upper sheet 104 and the lower sheet 105, so that the manufacturing is facilitated. The lower blade 105 is connected to the cylinder body 200 of the cylinder, the coolant flows from the third coolant channel 202 of the cylinder body 200 of the cylinder to the first inlet 121 on the lower blade 105, and the coolant flows through the lower blade 105, then flows from the lower blade 105 to the upper blade 104, and flows out from the first outlet 122 on the upper blade 104. The cooling fluid flows from the fourth cooling fluid channel 203 of the cylinder block 200 to the second inlet 131 on the lower blade 105, and after flowing through the lower blade 105, the cooling fluid flows from the lower blade 105 to the upper blade 104 and flows out from the second outlet 132 on the upper blade 104. The upper and

lower sheets

104, 105 are cooled by the coolant in the flowing process, so that the entire integrated exhaust manifold cylinder head 100 is cooled.

Referring again to fig. 1, the body 10 has a coolant outlet 106, and the first outlet 122 and the second outlet 132 are each in communication with one of the coolant outlets 106.

In the embodiment of the disclosure, only one cooling fluid outlet 106 is arranged on the integrated exhaust manifold cylinder cover 100, and the flow rate of the cooling fluid when the cooling fluid flows out is large, so that the flow speed of the cooling fluid can be increased, and more cooling fluid flows into the integrated exhaust manifold cylinder cover 100 at the same time, so that the cooling effect can be further increased.

In the disclosed embodiment, coolant outlet 106 is located on upper plate 104.

In the disclosed embodiment, the first outlet 122, the second outlet 132, and the coolant outlet 106 may be in communication via a bowl plug.

Referring again to fig. 1, the lower panel 105 includes: a first portion 151, a second portion 152, and a third portion 153. The first portion 151 is connected to the cylinder block 200, the plurality of sets of manifold exhaust holes 101 are all located on the first portion 151, and the first inlet 121 of the first cooling liquid passage 102 and the second inlet 131 of the second cooling liquid passage 103 are all located on the first portion 151. The second portion 152 is connected to the first portion 151, and the main body of the plurality of first coolant channels 102 is located on the second portion 152. The third portion 153 is connected to the first portion 151 and the second portion 152, respectively, and the second cooling liquid channel 103 is located on the third portion 153. Wherein the second portion 152 and the third portion 153 are both connected to the upper sheet 104. The manifold exhaust holes 101 are arranged side by side, the first inlets 121 are also arranged side by side, the arrangement directions of the first inlets 121 and the manifold exhaust holes 101 are parallel to each other, and the first inlets 121 and the manifold exhaust holes 101 are staggered from each other in the arrangement direction perpendicular to the manifold exhaust holes 101. In addition, a row of first inlets 121 is located between a row of manifold exhaust holes 101 and a row of second inlets 131, and the second inlets 131 are offset from the first inlets 121 in a direction perpendicular to the arrangement direction of the manifold exhaust holes 101.

In the embodiment of the present disclosure, the structure of the cylinder will be complex, there are many accessories in the cylinder, and the lower plate body 105 is divided into three parts, namely, the first part 151, the second part 152 and the third part 153, so that the shapes of the first part 151, the second part 152 and the third part 153 can be designed and manufactured conveniently according to the accessory positions of the cylinder, and some part of the first part 151, the second part 152 and the third part 153 can also be designed and manufactured again based on different cylinder shapes, and it is not necessary to manufacture the whole lower plate body 105 again, which is more convenient.

In the disclosed embodiment, the plurality of sets of manifold exhaust holes 101 are located on the first portion 151, and the first portion 151 is connected to the cylinder block 200, so that the plurality of sets of manifold exhaust holes 101 are conveniently communicated with the plurality of cylinder exhaust holes 201. The first portion 151 communicates with the second portion 152, the coolant flows from the third coolant passage 202 of the cylinder block 200 to the first inlet 121 on the first portion 151, the coolant flows through the first portion 151, then flows from the first portion 151 to the second portion 152, and flows from the second portion 152 to the upper plate 104, and the coolant flows out from the first outlet 122 on the upper plate 104. The coolant flows from the at least one fourth coolant channel 203 of the cylinder block 200 of the cylinder to the second inlet 131 on the first portion 151, flows through the lower plate 105 to the third portion 153, flows through the third portion 153 from the third portion 153 to the upper plate 104, and flows out from the second outlet 132 on the upper plate 104.

That is, the coolant flowing in from the third coolant passage 202 of the cylinder block 200 cools the first portion 151, the second portion 152, and the upper plate 104, and the coolant flowing in from the fourth coolant passage 203 of the cylinder block 200 cools the first portion 151, the third portion 153, and the upper plate 104.

The cooling channels with different cross-sectional diameters have different cooling effects. The utility model discloses can provide multiple cylinder cap, different cylinder caps have the cooling channel of cross section diameter size, can change different cylinder caps when using to change the cooling channel of different cross section diameter sizes.

For example, when the temperature of the portion to be cooled is higher, the cross section of the cooling passage passing through the portion may be increased, so that more cooling liquid may pass through the cover cooling passage, thereby obtaining a better cooling effect. When the temperature of the portion to be cooled is not high, the cross section of the cooling passage flowing through the portion can be reduced, so that the cover cooling passage can be prevented from flowing less cooling liquid. The cooling passages occupy a volume of the body that is too large, so that the strength of the entire integrated exhaust manifold head 100 is reduced.

In the embodiment of the present disclosure, before the integrated exhaust manifold cylinder head 100 is manufactured, the layout and the volume of the first portion 151, the second portion 152, and the third portion 153, and the cross section of the cooling channels in each portion may be adjusted according to the exhaust temperature of the cylinder, so as to reasonably distribute the flow rate of the cooling liquid, and thus, the cooling effect of the cooling channels on the entire integrated exhaust manifold cylinder head 100 is reasonably distributed.

Meanwhile, when the integrated exhaust manifold cylinder cover 100 is manufactured, the size difference of the cross sections between the communicated channels is not large, and the phenomenon that the flow of cooling liquid is influenced due to the fact that the cross sections change suddenly in the flowing process of the cooling liquid is avoided. The cooling water jacket in the whole integrated exhaust manifold cylinder cover 100 is ensured not to have a large-area flow stagnation area, and the flow of the cooling liquid is influenced. And the flow velocity of the cooling fluid in the first, second and

third sections

151, 152 and 153 is greater than 1 meter per second (m/s) to ensure a good cooling effect.

For example, the cooling effect can be estimated by simulating the flowing condition of the cooling liquid in the integrated exhaust manifold cylinder cover 100 through a simulation technology, and a good cooling effect can be obtained when the cooling liquid flows in the integrated exhaust manifold cylinder cover 100.

In the disclosed embodiment, the temperature of the exhaust side of the cylinder (the side from which exhaust gas is discharged) is greater than the temperature of the intake side of the cylinder (the side into which combustion gas is introduced), and therefore, the temperature of the integrated exhaust manifold head 100 on the exhaust side of the cylinder is greater than the temperature of the integrated exhaust manifold head 100 on the intake side of the cylinder. Therefore, the layout of the cooling passages in the integrated exhaust manifold head 100 in the regions close to the exhaust side and the intake side may be different in order to obtain a better cooling effect.

Fig. 2 is a bottom view of a lower plate provided in an embodiment of the present disclosure. Referring to fig. 2, a first coolant passages 102 among the plurality of first coolant passages 102 correspond to the third coolant passages 202 located on the exhaust side of the cylinders, the remaining B first coolant passages 102 among the plurality of first coolant passages 102 correspond to the third coolant passages 202 located on the intake side of the cylinders, a and B are positive integers, and a is greater than B.

The number of first coolant passages 102 on the exhaust side of the cylinder is greater than the number of first coolant passages 102 on the intake side of the cylinder. Therefore, the number of cooling channels on the exhaust side of the cylinder is large, the cooling effect on the exhaust side integrated exhaust manifold cylinder cover 100 on the cylinder is good, the temperature of the intake side integrated exhaust manifold cylinder cover 100 on the cylinder is not high, a small number of first cooling liquid channels 102 can be arranged, the first cooling liquid channels 102 are prevented from occupying the large size of the integrated exhaust manifold cylinder cover 100, and the strength of the integrated exhaust manifold cylinder cover 100 is reduced.

In one implementation of the disclosed embodiment, a ranges between 8 and 13 and B ranges between 15 and 20.

For example, A is 11 and B is 17.

In one implementation of the disclosed embodiment, the total area of the cross-sections of the a first coolant channels 102 is greater than the total area of the cross-sections in the B first coolant channels.

The area of the cross section of the first coolant passage 102 on the intake side of the cylinder is larger than the area of the cross section of the first coolant passage 102 on the exhaust side of the cylinder, so that the flow rate of the coolant circulating in the first coolant passage 102 on the intake side of the cylinder is larger, and the integrated exhaust manifold cylinder head 100 on the intake side of the cylinder obtains better cooling effect.

In the disclosed embodiment, the total area of the cross-sections of the a first coolant channels 102 is greater than the total area of the cross-sections in the B first coolant channels 102. For example, the area of the cross section of one of the a first cooling liquid channels 102 may be larger than the area of the cross section of one of the B first cooling liquid channels 102, and the area of the cross section of one of the a first cooling liquid channels 102 may also be smaller than or equal to the area of the cross section of one of the B first cooling liquid channels 102, as long as it is ensured that the total area of the cross sections of the a first cooling liquid channels 102 is larger than the total area of the cross sections of the B first cooling liquid channels 102.

Fig. 3 is a partial schematic structural view of an integrated exhaust manifold cylinder head 100 according to an embodiment of the disclosure. Referring to fig. 1 and 3, the upper sheet 104 also has, in its face, a head coolant passage 141 communicating with the first coolant passage 102. Wherein, first coolant channel 102 passes through lower blade body 105 and extends in upper blade body 104, that is, upper blade body 104 has part of first coolant channel 102 therein, and part of first coolant channel 102 and head coolant channel 141 located in upper blade body 104 can be arranged side by side.

A cylinder head cooling liquid channel 141 is arranged in the upper sheet body 104, and the cylinder head cooling liquid channel 141 can also cool the integrated exhaust manifold cylinder head 100, so that the cooling effect is increased.

As shown in fig. 3, both sides of the upper sheet 104 are slope-shaped, and at least two head-coolant passages 141 having different heights are arranged on the slopes. The upper head coolant passage 141 may be referred to as an on-head coolant passage, and the lower head coolant passage 141 may be referred to as an off-head coolant passage.

In the embodiment of the present disclosure, the head coolant passage 141 is also communicated with the coolant outlet 106, and the coolant is discharged through the coolant.

In the embodiment of the present disclosure, the head coolant passage 141 and the coolant outlet 106 may be communicated by a bowl plug.

The disclosed embodiment also provides a cylinder, as shown in fig. 1, comprising a cylinder block 200 and an integrated exhaust manifold cylinder head 100 as shown in any of the above figures. Wherein the cylinder 200 is connected to the first portion 151.

Exhaust gas in the cylinder is discharged to a manifold exhaust hole of the main body of the integrated exhaust manifold cylinder head through a cylinder exhaust hole and is discharged through the manifold exhaust hole. Because the temperature of waste gas is higher, waste gas gives integrated exhaust manifold cylinder cap heat transfer, can make whole exhaust manifold cylinder cap temperature rise, need cool down the exhaust manifold cylinder cap, avoids the high temperature of exhaust manifold cylinder cap to cause the exhaust manifold cylinder cap to damage. In the disclosed embodiment, the coolant flows through a plurality of third coolant channels in the side wall of the cylinder block to the first inlet of the first coolant channel, and the coolant flows out through the first outlet of the first coolant channel. Meanwhile, the cooling liquid flows to a second inlet of the second cooling liquid channel through a fourth cooling liquid channel outside the side wall of the cylinder body, and the cooling liquid flows out through a second outlet of the fourth cooling liquid channel. When the cooling liquid flows in the integrated exhaust manifold cylinder cover, the heat of the exhaust manifold cylinder cover is taken away, so that the temperature of the integrated exhaust manifold cylinder cover is reduced, and the integrated exhaust manifold cylinder cover is cooled. Because the second cooling liquid channel which can be communicated with at least one fourth cooling liquid channel outside the side wall of the cylinder body in a one-to-one correspondence mode is added, the second cooling liquid channel is equivalent to a cooling channel in an auxiliary water jacket in the related art, the auxiliary water jacket does not need to be separately arranged, and the second cooling liquid channel is positioned in the integrated exhaust manifold cylinder cover, so that the weight of the engine is reduced compared with the situation that the auxiliary water jacket is separately manufactured.

In the disclosed embodiment, the cylinder has four cylinder exhaust holes, a first cylinder exhaust hole 211, a second cylinder exhaust hole 212, a third cylinder exhaust hole 213, and a fourth cylinder exhaust hole 214. The engine with the covered cylinder is a four-cylinder engine.

The cylinder shown in the figures is merely an example, and in other implementations, the cylinder may have other numbers of cylinder exhaust ports.

As shown in fig. 1, the main body 10 has four sets of manifold exhaust holes 101, and each set of manifold exhaust holes 101 corresponds to one cylinder exhaust hole 201, so that the manifold exhaust holes 101 and the cylinder exhaust holes 201 are conveniently connected.

Wherein, the upper sheet body 104 is provided with four groups of manifold exhaust holes 101, the lower sheet body 105 is provided with four groups of manifold exhaust holes 101, and the four groups of manifold exhaust holes 101 on the upper sheet body 104 and the four groups of manifold exhaust holes 101 on the lower sheet body 105 are arranged in a one-to-one correspondence way. The area of the manifold exhaust hole 101 of the upper plate 104 is smaller than that of the manifold exhaust hole 101 of the lower plate 105.

As shown in fig. 1, each set of manifold exhaust holes 101 has two manifold exhaust holes 101. I.e., one cylinder exhaust port 201 corresponds to two manifold exhaust ports 101.

As shown in fig. 1, the coolant flows from the cylinder block 200 to the integrated exhaust manifold cylinder head 100, and such a layout of the coolant is called a cross flow structure.

Fig. 4 is a schematic structural diagram of a cylinder provided in the embodiment of the present disclosure. Referring to fig. 4, the cylinder block 200 has a fourth coolant passage 203.

In other implementations, the cylinder block 200 may have two or more fourth coolant channels 203, which the present disclosure does not limit.

As shown in fig. 4, the fourth coolant passage 203 is located on the exhaust side of the cylinder.

The fourth coolant channel 203 is arranged at the exhaust side of the cylinder due to the higher temperature at the exhaust side of the cylinder, while the second coolant channel 103 may also be arranged at the exhaust side of the cylinder, so that the coolant channel at the exhaust side of the cylinder increases the cooling effect on the integrated exhaust manifold head 100 at the exhaust side of the cylinder.

As shown in fig. 4, the fourth coolant passage 203 is located outside the junction of the second cylinder discharge hole 212 and the third cylinder discharge hole 213.

If there are a plurality of fourth coolant passages 203, each may be disposed outside the junction of the second cylinder discharge hole 212 and the third cylinder discharge hole 213.

In addition, when the cylinder has more or less than four cylinder discharge holes, it is sufficient to dispose the fourth coolant passage 203 at the junction of two cylinder discharge holes near the middle position.

In the disclosed embodiment, the temperatures at the second cylinder exhaust hole 212 and the third cylinder exhaust hole 213 are higher, and the fourth cooling liquid channel 203 is disposed outside the junction of the second cylinder exhaust hole 212 and the third cylinder exhaust hole 213, so that the cooling effect on the cylinder body at the second cylinder exhaust hole 212 and the third cylinder exhaust hole 213 can be increased.

As shown in fig. 4, a first boss 204 is provided at an outer side of a boundary of the second cylinder discharge hole 212 and the third cylinder discharge hole 213. The fourth coolant channel 203 is located within the first boss 204.

In the disclosed embodiment, a plurality of fourth coolant channels 203 may be disposed within the first boss 204.

As shown in fig. 2, a portion of the first portion 151 corresponding to an outer side of a boundary of the second cylinder discharge hole 212 and the third cylinder discharge hole 213 of the cylinder block 200 is disposed with the second boss 107, and the second inlet 131 of the second coolant passage 103 is located on the second boss 107. The arrangement of the first boss 204 and the second boss 107 facilitates the arrangement of the fourth coolant passage 203 and the second coolant passage 103. Meanwhile, the first boss 204 and the second boss 107 occupy smaller volume, so that compared with the arrangement of an auxiliary water jacket, the volume of the engine can be reduced, the cost is lower, and the cost is reduced.

As shown in fig. 4, the cylinder block 200 further includes a coolant inlet 205, and the coolant inlet 205 is used for inputting coolant. The third coolant passage 202 and the fourth coolant passage 203 each communicate with a coolant inlet 205.

The following describes the flow of coolant in the cylinder provided by the embodiments of the present disclosure:

the coolant is input from the coolant inlet 205, and flows to the third coolant passage 202 and the fourth coolant passage 203, cooling the cylinder block 200. The coolant flowing into the third coolant passage 202 flows to the first inlet 121 of the first coolant passage, the coolant is divided into two parts, one part of the coolant flows to the first part 151 through the first inlet 121, the coolant flows to the second part 152 after flowing through the first part 151, the coolant flows to the upper plate 104 after flowing through the second part 152, and the coolant flows to the coolant outlet 106 from the first outlet 122 of the upper plate 104 after flowing through the upper plate 104 and flows out; another part of the coolant flows through the first inlet 121 to the head coolant passage 141, and then flows through the head coolant passage 141 to the coolant outlet 106 and flows out. The coolant flowing into the fourth coolant channel 203 flows to the second inlet 131 of the second coolant channel 103, the coolant flows to the first portion 151 through the first inlet 121, the coolant flows through the first portion 151 and then flows to the third portion 153, the coolant flows through the third portion 153 and then flows to the upper plate 104, and the coolant flows through the upper plate 104 and then flows from the first outlet 122 of the upper plate 104 to the coolant outlet 106 and flows out. The coolant re-flows to remove heat to cool the cylinder block 200 and the integrated exhaust manifold head 100.

As shown in fig. 4, the cylinder block 200 further has a supercharger coolant passage 206 on the side wall thereof, the supercharger coolant passage 206 communicates with the third coolant passage 202, and the coolant flows through the third coolant passage 202 to the supercharger coolant passage 206 to cool the supercharger.

As shown in fig. 4, four side-by-side cylinder exhaust holes of the cylinder are communicated with each other, a first connecting rod 207 is disposed at a joint of the two cylinder exhaust holes, an extending direction of the first connecting rod 207 is perpendicular to an arrangement direction of the cylinder exhaust holes, the first connecting rod 207 has a first groove 271 arranged along a length direction of the first connecting rod 207, an opening of the first groove 271 faces the lower sheet body 105, and the first connecting rod 207 is located in the cylinder exhaust hole 201.

As shown in fig. 2, a surface of the first portion 151 facing the cylinder block 200 has second connection rods 1511 corresponding to the first connection rods 207 one by one, the second connection rods 1511 have second recesses 1512 arranged along a length direction of the second connection rods 1511 and corresponding to the first recesses 271 one by one, and the second connection rods 1511 are located in the manifold exhaust holes.

When the first portion 151 is connected to the cylinder block 200, the first groove 271 is opposite to the second groove 1512, the first groove 271 and the second groove 1512 form a cooling channel, and two ends of the cooling channel are respectively communicated with the third cooling liquid channel 202 on the exhaust side of the cylinder block and the third cooling liquid channel 202 on the intake side of the cylinder block.

A cooling channel is formed by the first groove 271 and the second groove 1512 to cool the whole cylinder, so that the contact area of the cooling liquid and the exhaust gas is increased, and the cooling effect is ensured.

In the disclosed embodiment, the first portion 151 may be welded with the cylinder block 200, ensuring the strength of the connection.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. An integrated exhaust manifold cylinder head, characterized in that the integrated exhaust manifold cylinder head (100) comprises:

the cylinder body (200) comprises a main body (10), wherein a plurality of groups of manifold exhaust holes (101) are formed in the main body (10), the plurality of groups of manifold exhaust holes (101) are arranged along a straight line, and the plurality of groups of manifold exhaust holes (101) are used for being communicated with a plurality of cylinder exhaust holes (201) in the cylinder body (200) of the cylinder in a one-to-one correspondence manner;

the main body (10) is further provided with a plurality of first cooling liquid channels (102) and at least one second cooling liquid channel (103), the first cooling liquid channel (102) is provided with a first inlet (121) and a first outlet (122), the second cooling liquid channel (103) is provided with a second inlet (131) and a second outlet (132), the plurality of first inlets (121) of the plurality of first cooling liquid channels (102) are used for being communicated with the plurality of third cooling liquid channels (202) in the side wall of the cylinder body (200) in a one-to-one correspondence mode, and the at least one second inlet (131) of the at least one second cooling liquid channel (103) is used for being communicated with the at least one fourth cooling liquid channel (203) outside the side wall of the cylinder body (200) in a one-to-one correspondence mode.

2. The integrated exhaust manifold cylinder head according to claim 1, characterized in that the body (10) comprises:

an upper blade (104), a first outlet (122) of the first coolant channel (102) and a second outlet (132) of the second coolant channel (103) both being located on the upper blade (104);

a lower plate (105) connected to the upper plate (104), the first inlet (121) of the first coolant channel (102) and the second inlet (131) of the second coolant channel (103) both being located on the lower plate (105).

3. The integrated exhaust manifold cylinder head according to claim 2, characterized in that the lower sheet (105) comprises:

a first portion (151) connected to the cylinder block (200), the plurality of sets of manifold exhaust holes (101) being located on the first portion (151), a first inlet (121) of the first coolant passage (102) and a second inlet (131) of the second coolant passage (103) being located on the first portion (151);

a second portion (152) connected to the first portion (151), the bodies of the plurality of first coolant channels (102) being located on the second portion (152);

a third portion (153) connected to the first portion (151) and the second portion (152), respectively, the at least one second coolant channel (103) being located on the third portion (153);

wherein the second portion (152) and the third portion (153) are both connected with the upper panel (104).

4. The integrated exhaust manifold head according to any of claims 1 to 3, characterized in that A of said first coolant channels (102) of said plurality of first coolant channels (102) correspond to said third coolant channel (202) located at the exhaust side of said cylinder, and the remaining B of said first coolant channels (102) of said plurality of first coolant channels (102) correspond to said third coolant channel (202) located at the intake side of said cylinder;

a and B are positive integers, and A is greater than B.

5. The integrated exhaust manifold head according to claim 4, characterized in that the total area of the cross-sections of A said first coolant channels (102) is larger than the total area of the cross-sections of B said first coolant channels (102).

6. The integrated exhaust manifold head according to any of claims 1 to 3, characterized in that said main body (10) has one coolant outlet (106) and said first outlet (122) and said second outlet (132) are both in communication with said one coolant outlet (106).

7. The integrated exhaust manifold cylinder head according to claim 2 or 3, characterized in that said upper plate (104) has, in its face, also a head coolant channel (141) communicating with said first coolant channel (102).

8. A cylinder, characterized in that it comprises a block (200) and an integrated exhaust manifold head (100) according to any of claims 1 to 7.

9. A cylinder according to claim 8, characterized in that the at least one fourth coolant channel (203) is located at the exhaust side of the cylinder.

10. The cylinder according to claim 9, wherein the cylinder block (200) comprises a first cylinder exhaust hole (211), a second cylinder exhaust hole (212), a third cylinder exhaust hole (213) and a fourth cylinder exhaust hole (214) arranged in sequence, and the at least one fourth cooling liquid channel (203) is located outside a junction of the second cylinder exhaust hole (212) and the third cylinder exhaust hole (213).