CN219654788U - Cylinder head cover heat shield, power assembly and vehicle - Google Patents

Abstract

The utility model relates to a cylinder head cover heat shield, a power assembly and a vehicle, wherein the cylinder head cover heat shield comprises a heat insulation plate, a first mounting plate and a second mounting plate, and the heat insulation plate is arranged between the cylinder head cover and a supercharger so as to insulate the cylinder head cover; the first end of the first mounting plate is connected with one end of the heat insulation plate, the second end of the first mounting plate extends along the direction close to the cylinder head cover, and the first mounting plate is used for being connected with the bottom wall of the cylinder head cover; the first end of the second mounting plate is connected with the other end opposite to the heat insulation plate, the second end of the second mounting plate extends along the direction deviating from the cylinder head cover, and the second mounting plate is used for being connected with the side wall of the cylinder head cover. According to the utility model, the first mounting plate and the second mounting plate can be used for mounting the cylinder head cover heat shield between the cylinder head cover and the supercharger, so that the cylinder head cover heat shield can separate heat emitted by the supercharger, and the heat radiation is prevented from causing the cylinder head cover to be heated and aged, so that the service life of the cylinder head cover is prolonged.

Description

Cylinder head cover heat shield, power assembly and vehicle

Technical Field

The utility model relates to the technical field of automobile heat shields, in particular to a cylinder head cover heat shield, a power assembly and a vehicle.

Background

With the development of the automobile industry, the requirements of people on the safety performance and the durability of the automobile are continuously improved, and in order to improve the power performance of the automobile and save fuel, a plurality of automobile engines are provided with superchargers at the air inlet end of a three-way catalyst. In addition, along with the increasing application of electrification on automobiles, the arrangement mode that the engine adopts front side air inlet and rear side exhaust is also gradually and widely applied, and in the arrangement mode, the supercharger is closer to the cylinder head cover, heat emitted by the supercharger can radiate to the cylinder head cover, and therefore the cylinder head cover is damaged due to heat aging, and the service life of the cylinder head cover can be influenced.

Disclosure of Invention

The utility model provides a heat shield of a cylinder head cover, a power assembly and a vehicle, which at least solve the technical problem that the service life of the cylinder head cover in the related art is influenced by heat aging. The technical scheme of the utility model is as follows:

according to a first aspect of the present utility model, there is provided a cylinder head cover heat shield comprising a heat shield, a first mounting plate and a second mounting plate, the heat shield being arranged between the cylinder head cover and a supercharger to insulate the cylinder head cover; the first end of the first mounting plate is connected with one end of the heat insulation plate, the second end of the first mounting plate extends along the direction close to the cylinder head cover, and the first mounting plate is used for being connected with the bottom wall of the cylinder head cover; the first end of the second mounting plate is connected with the other end opposite to the heat insulation plate, the second end of the second mounting plate extends along the direction deviating from the cylinder head cover, and the second mounting plate is used for being connected with the side wall of the cylinder head cover.

According to the technical means, the first mounting plate is arranged at the first end of the heat insulation plate, the second mounting plate is arranged at the second end of the heat insulation plate, the first end of the first mounting plate is connected with one end of the heat insulation plate, which is close to the bottom wall of the cylinder head cover, and the second end of the first mounting plate extends along the direction, which is close to the cylinder head cover, so that the first mounting plate can be connected to the bottom wall of the cylinder head cover; the first end of the second mounting plate is connected with one end of the heat insulation plate, which is close to the opening of the cylinder head cover, and the second end of the second mounting plate extends along the direction away from the cylinder head cover, so that the second mounting plate can be connected to the side wall of the cylinder head cover.

The first mounting plate is connected to the bottom wall of the cylinder head cover, the second mounting plate is connected to the side wall of the cylinder head cover, and the cylinder head cover heat shield can be mounted between the cylinder head cover and the supercharger, so that heat emitted by the supercharger can be blocked through the cylinder head cover heat shield, and heat aging of the cylinder head cover caused by a large amount of heat radiating to the cylinder head cover is avoided, so that the service life of the cylinder head cover is prolonged.

In one possible embodiment, a second end of the second mounting plate is provided with a bending portion, which is bent in a direction away from the bottom wall of the cylinder head cover.

According to the technical means, the bending part can separate the joint of the cylinder head cover and the cylinder head, so that the quantity of heat emitted by the supercharger, which is radiated onto the cylinder head cover from the edge of one end of the cylinder head cover heat shield, which is close to the opening of the cylinder head cover, is reduced, and the heat insulation effect of the cylinder head cover heat shield is enhanced.

In one possible embodiment, the side of the cylinder head cover heat shield facing away from the cylinder head cover is provided with a reinforcing rib, the first end of the reinforcing rib is located at one end of the heat insulating plate close to the second mounting plate, the second end of the reinforcing rib is located on the second mounting plate, and the reinforcing rib extends to the edge of one end of the bending part far away from the heat insulating plate.

According to the technical means, the structural strength of the cylinder head cover heat shield can be increased.

In one possible implementation manner, an avoidance space is formed in the reinforcing rib, the avoidance space penetrates through the reinforcing rib towards the direction close to the cylinder head cover, the avoidance space penetrates through the end face of the second end of the reinforcing rib, and the avoidance space is used for avoiding the first end of the air overflow pipe; one end of the heat insulating plate is provided with an avoidance notch which is used for avoiding the second end of the air overflow pipe.

According to the technical means, the interference between the heat shield of the cylinder cover and the air overflow pipe can be avoided, so that the heat shield of the cylinder cover and the air overflow pipe can be reasonably arranged.

In one possible implementation manner, a plurality of positioning holes are formed in the second mounting plate at intervals, and the positioning holes are used for connecting the cylinder head cover; the side surface of the heat insulation plate, which is away from the cylinder head cover, is provided with a plurality of avoidance grooves, the plurality of avoidance grooves are in one-to-one correspondence with the plurality of positioning holes, and the avoidance grooves are used for avoiding the mounting sleeve.

According to the technical means, the cylinder head cover heat shield can be positioned when being installed, and the condition that the installation sleeve and the cylinder head cover heat shield interfere when the installation sleeve is used can be avoided, so that the cylinder head cover heat shield can be installed quickly.

In one possible embodiment, a plurality of mounting holes are formed in the first mounting plate at intervals, and the mounting holes are used for connecting with the cylinder head cover.

According to the technical means, the heat shield of the cylinder cover is conveniently connected with the cylinder cover through the fasteners such as bolts, so that the heat shield of the cylinder cover is more firmly connected with the cylinder cover.

In one possible embodiment, the cylinder head cover heat shield comprises a first metal layer, a heat insulating layer and a second metal layer, wherein the heat insulating layer is positioned between the first metal layer and the second metal layer and is attached to the first metal layer and the second metal layer, and the first metal layer is positioned on one side of the cylinder head cover heat shield, which is close to the supercharger; the second metal layer comprises a supporting portion, a transition portion and a pressing portion, wherein the supporting portion is located on one side, far away from the supercharger, of the heat insulation layer, the transition portion is arc-shaped, the concave side of the transition portion faces the heat insulation layer, the first end of the transition portion is connected with the supporting portion, the second end of the transition portion is connected with the pressing portion, and the pressing portion is pressed on the side, close to the supercharger, of the first metal layer.

According to the technical means, the heat insulation effect of the heat shield of the cylinder head cover can be enhanced, and the structural strength of the heat shield of the cylinder head cover can be improved.

According to a second aspect of the present utility model, there is provided a power assembly including the above-mentioned cylinder head cover heat shield, cylinder head cover, supercharger and gas overflow pipe, the cylinder head cover being located at a first side of the cylinder head cover heat shield, a first connecting plate being provided on a bottom wall of the cylinder head cover, the first connecting plate being parallel to and connected to a first mounting plate; the second connecting plate is arranged on the side wall of the cylinder head cover, is close to the opening position of the cylinder head cover, is parallel to the second mounting plate and is connected with the second mounting plate; the supercharger is positioned on the second side of the cylinder head cover heat shield; the portion of the air bleed is located on a first side of the cylinder head cover heat shield.

According to the technical means, when the cylinder head cover heat shield is connected with the cylinder head cover, the first mounting plate can be connected with the first connecting plate, and the second mounting plate is connected with the second connecting plate, so that the direct connection of the cylinder head cover heat shield with the side wall of the cylinder head cover is avoided. Therefore, side core pulling is not needed to be carried out on the side face of the cylinder head cover, so that the structure of a die of the cylinder head cover can be simplified, and the processing difficulty of the cylinder head cover is further reduced.

In one possible implementation manner, a plurality of positioning holes are formed in the second mounting plate at intervals; the power assembly further comprises a screw and a nut, the screw comprises a first thread section, a positioning flange and a second thread section which are sequentially connected together, the positioning flange is positioned on one side of the second mounting plate, which is close to the opening of the cylinder head cover, and is in butt joint with the second mounting plate, the first thread section passes through the positioning hole, and the second thread section is connected with the cylinder head cover; the nut is positioned on one side of the second mounting plate, which is close to the bottom wall of the cylinder head cover, and is screwed on the first thread section.

According to the technical means, the positioning and the installation of the cylinder head cover heat shield and the cylinder head cover can be facilitated.

According to a third aspect of the present utility model there is provided a vehicle comprising a powertrain as described above.

Therefore, the technical characteristics of the utility model have the following beneficial effects:

(1) According to the utility model, the first mounting plate is connected to the bottom wall of the cylinder head cover, and the second mounting plate is connected to the side wall of the cylinder head cover, so that the cylinder head cover heat shield can be mounted between the cylinder head cover and the supercharger, and therefore, heat emitted by the supercharger can be blocked through the cylinder head cover heat shield, and heat aging of the cylinder head cover caused by a large amount of heat radiating to the cylinder head cover is avoided, so that the service life of the cylinder head cover is prolonged.

(2) According to the utility model, the connecting part of the cylinder head cover and the cylinder head can be blocked through the bending part, so that the heat insulation effect of the heat insulation cover of the cylinder head cover is enhanced.

(3) The utility model can increase the structural strength of the heat shield of the cylinder head cover through the arrangement of the reinforcing ribs.

(4) According to the utility model, the interference between the heat shield of the cylinder cover and the air overflow pipe can be avoided through the arrangement of the avoiding space, so that the heat shield of the cylinder cover and the air overflow pipe can be reasonably arranged.

(5) According to the utility model, the plurality of positioning holes are formed in the second mounting plate, so that the cylinder head cover heat shield can be positioned when the cylinder head cover heat shield is mounted, and the situation that the mounting sleeve and the cylinder head cover heat shield interfere when the mounting sleeve is used can be avoided through avoiding the groove, so that the cylinder head cover heat shield can be mounted quickly.

(6) According to the utility model, the plurality of mounting holes are formed in the first mounting plate, so that the heat shield of the cylinder cover is conveniently connected with the cylinder cover through the fasteners such as bolts, and the heat shield of the cylinder cover is more firmly connected with the cylinder cover.

(7) The heat insulation effect of the heat insulation cover of the cylinder cover can be enhanced and the structural strength of the heat insulation cover of the cylinder cover can be improved through the heat insulation cover of the cylinder cover.

(8) According to the utility model, the first mounting plate is connected with the first connecting plate, and the second mounting plate is connected with the second connecting plate, so that the heat shield of the cylinder head cover is not required to be directly connected to the side surface of the cylinder head cover, side core pulling is not required to be carried out on the side surface of the cylinder head cover, the structure of the die of the cylinder head cover is simplified, and the processing difficulty of the cylinder head cover is further reduced.

It should be noted that, the technical effects caused by any implementation manner of the second aspect to the third aspect may refer to the technical effects caused by the corresponding implementation manner in the first aspect, which are not described herein.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model and do not constitute a undue limitation on the utility model.

FIG. 1 is a schematic diagram of a powertrain shown in accordance with an exemplary embodiment;

FIG. 2 is a schematic diagram of a cylinder head cover heat shield shown according to an exemplary embodiment;

FIG. 3 is a schematic left-hand view of a cylinder head cover heat shield shown according to an example embodiment;

FIG. 4 is a schematic top view of a cylinder head cover heat shield shown according to an exemplary embodiment;

FIG. 5 is a schematic cross-sectional view illustrating a connection of a second mounting plate with a cylinder head cover according to an example embodiment;

FIG. 6 is a schematic front view of a cylinder head cover heat shield shown according to an example embodiment;

fig. 7 is a schematic cross-sectional view of an edge portion of a cylinder head cover heat shield according to an example embodiment.

Wherein, 1-the cylinder head cover heat shield; 11-heat insulation board; 111-avoiding grooves; 12-a first mounting plate; 121-mounting holes; 13-a second mounting plate; 131-positioning holes; 1311-main locating holes; 1312-a secondary locating hole; 132—a bend; 14-a first metal layer; 15-a heat insulation layer; 16-a second metal layer; 161-a support; 162-transition; 163-press-fitting;

2-a cylinder head cover;

3-a supercharger; 31-a supercharger intermediate; 32-booster volute;

4-an air overflow pipe;

a 5-three way catalyst;

6-a supercharger oil inlet pipe;

7-a screw; 71-a first thread segment; 72-positioning a flange; 73-a second thread segment;

8-a nut;

9-reinforcing ribs; 91-first part; 92-a second portion; 93 third section.

Detailed Description

In order to enable a person skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.

With the increasing application of electrification in the automobile industry, the arrangement mode that an engine adopts front-side air inlet and rear-side air exhaust is also gradually and widely applied, and the heat emitted by a supercharger and a three-way catalyst positioned on the air exhaust side can radiate to the cylinder head cover, so that the cylinder head cover is damaged due to thermal aging.

Based on this, the present utility model proposes a vehicle including a power assembly, fig. 1 is a schematic structural view of the power assembly shown according to an exemplary embodiment, and as shown in fig. 1, the power assembly includes a cylinder head cover heat shield 1, a cylinder head cover 2, a supercharger 3 and a gas overflow pipe 4, the cylinder head cover 2 is located at a first side of the cylinder head cover heat shield 1, the supercharger 3 is located at a second side of the cylinder head cover heat shield 1, the first side and the second side are opposite sides of the cylinder head cover heat shield 1, and heat emitted from the supercharger 3 can be blocked by the cylinder head cover heat shield 1 to avoid heat radiating to the cylinder head cover heat shield 1, thereby causing thermal aging of the cylinder head cover heat shield 1.

As shown in fig. 1, the power assembly further comprises a three-way catalyst 5 and a supercharger oil inlet pipe 6, the supercharger 3 comprises a supercharger intermediate 31 and a supercharger volute 32, the supercharger intermediate 31, the supercharger volute 32 and the three-way catalyst 5 are sequentially connected, radiant heat received by the cylinder head cover heat shield 1 mainly comes from heat emitted by the supercharger 3, in order to enable the cylinder head cover heat shield 1 to better insulate the cylinder head cover 2, a first end of the cylinder head cover heat shield 1 is located between one end, far away from the supercharger volute 32, of the supercharger intermediate 31 and the cylinder head cover 2, a second end of the cylinder head cover heat shield 1 is located between a joint of the supercharger volute 32 and the three-way catalyst 5 and the cylinder head cover 2, a third end of the cylinder head cover heat shield 1 is located on one side, close to the supercharger 3, of a fourth end of the cylinder head cover heat shield 1 is located on one side, close to the supercharger 3, of an opening of the cylinder head cover 2.

Through the arrangement, the heat shield 1 of the cylinder head cover can occupy reasonable space, and the heat radiated to the cylinder head cover 2 by the supercharger 3 is isolated to the greatest extent, so that a good heat insulation effect is achieved.

In addition, in order to prevent the overflow pipe 4 and the supercharger oil inlet pipe 6 from being subjected to heat radiation to cause thermal aging, as shown in fig. 1, the overflow pipe 4 and the supercharger oil inlet pipe 6 are passed through a gap between the cylinder head cover heat shield 1 and the cylinder head cover 2, so that parts of the overflow pipe 4 and the supercharger oil inlet pipe 6 are positioned on one side of the cylinder head cover heat shield 1 close to the cylinder head cover 2, thereby reducing the heat radiation to which the overflow pipe 4 and the supercharger oil inlet pipe 6 are subjected.

The heat shield 1 is usually fixed on the side of the cylinder head cover 2, and the two connection modes are usually connected through bolts, and the conventional connection mode needs to be provided with bolt holes on the side of the cylinder head cover 2, so that when the cylinder head cover 2 is processed, side core pulling is needed to be performed on the cylinder head cover 2, the die structure of the cylinder head cover 2 is complex, and further the processing difficulty of the cylinder head cover 2 is high.

Based on this, fig. 2 is a schematic structural view of the cylinder head cover heat shield 1 shown according to an exemplary embodiment, and as shown in fig. 1 and 2, the cylinder head cover heat shield 1 includes a heat insulating plate 11, a first mounting plate 12, and a second mounting plate 13, the heat insulating plate 11 being disposed between the cylinder head cover 2 and the supercharger 3, mainly for heat insulating the cylinder head cover 2.

Fig. 3 is a schematic left-hand view of the cylinder head cover heat shield 1 according to an exemplary embodiment, as shown in fig. 2 and 3, a first end of the first mounting plate 12 is connected to one end of the heat shield 11, a second end of the first mounting plate 12 extends in a direction approaching the cylinder head cover 2, and the first mounting plate 12 is used for connection to a bottom wall of the cylinder head cover 2; that is, the extending direction of the second end of the first mounting plate 12 is not overlapped with and parallel to the side surface of the heat shield 11 close to the cylinder head cover heat shield 1, and here, the extending direction of the second end of the first mounting plate 12 is perpendicular to the side surface of the heat shield 11 close to the cylinder head cover heat shield 1.

Correspondingly, a first connecting plate (not shown in the figure) is arranged on the bottom wall of the cylinder head cover 2, and the first mounting plate 12 and the first connecting plate are attached together and connected, so that the first mounting plate 12 and the first connecting plate are connected, and the cylinder head cover heat shield 1 and the cylinder head cover 2 are connected.

Specifically, fig. 4 is a schematic top view of the cylinder head cover heat shield 1 according to an exemplary embodiment, as shown in fig. 2 and 4, a plurality of mounting holes 121 are formed on the first mounting plate 12 at intervals, and a plurality of mounting holes are formed on the first connecting plate, the plurality of mounting holes are in one-to-one correspondence with the plurality of mounting holes 121, then a fastening member such as a bolt or a stud is passed through one mounting hole 121 and one mounting hole, and then a nut is screwed on the fastening member to achieve connection and fixation of the first mounting plate 12 and the first connecting plate, and here, the fastening member is exemplified as a bolt. The first mounting plate 12 and the first connection plate may be connected by other connection methods such as a clamping connection.

It should be noted that, the mounting hole 121 may be a waist-shaped hole or a slotted hole, so that the first mounting plate 12 is convenient to fine-tune when being connected with the cylinder head cover 2, so that the first mounting plate 12 is more tightly connected with the cylinder head cover 2.

The first end of the second mounting plate 13 is connected with the other end opposite to the heat insulating plate 11, the second end of the second mounting plate 13 extends along the direction away from the cylinder head cover 2, and the second mounting plate 13 is used for being connected with the side wall of the cylinder head cover 2; that is, the extending direction of the second end of the second mounting plate 13 is not overlapped with and parallel to the side surface of the heat shield 11 close to the cylinder head cover heat shield 1, and here, the extending direction of the second end of the second mounting plate 13 is perpendicular to the side surface of the heat shield 11 close to the cylinder head cover heat shield 1.

Correspondingly, a second connecting plate (not shown in the figure) is arranged on the side wall of the cylinder head cover 2 near the opening of the cylinder head cover 2, and the second connecting plate is attached to the second connecting plate through a second mounting plate 13 and connected, so that the connection between the second mounting plate 13 and the second connecting plate is realized, and the connection between the cylinder head cover heat shield 1 and the cylinder head cover 2 is realized.

Specifically, as shown in fig. 2 and fig. 4, a plurality of positioning holes 131 are formed in the second mounting plate 13 at intervals, and a plurality of connecting holes are formed in the second connecting plate, wherein the plurality of connecting holes correspond to the plurality of positioning holes 131 one by one, then a fastening member such as a bolt or a stud is inserted through the one positioning hole 131 and the one connecting hole, and then a nut is screwed on the fastening member, so as to realize connection and fixation of the second mounting plate 13 and the second connecting plate. The second mounting plate 13 and the second connection plate may be connected by other connection methods such as clamping.

One of the plurality of positioning holes 131 is a main positioning hole 1311, the other is a sub-positioning hole 1312, and the positioning hole 131 is a circular hole for positioning the second mounting plate 13 when the second mounting plate 13 is mounted, thereby ensuring the accuracy of the mounting position of the cylinder head cover heat shield 1.

The first mounting plate 12 is connected with the first connecting plate, and the second mounting plate 13 is connected with the second connecting plate, so that the cylinder head cover heat shield 1 can be mounted between the cylinder head cover 2 and the supercharger 3, and therefore heat emitted by the supercharger 3 can be blocked through the cylinder head cover heat shield 1, and a great amount of heat is prevented from radiating onto the cylinder head cover 2 to cause the thermal aging of the cylinder head cover 2, so that the service life of the cylinder head cover 2 is prolonged.

In addition, the first mounting plate 12 and the second mounting plate 13 are not directly connected with the side wall of the cylinder head cover 2, namely, the cylinder head cover heat shield 1 is not directly connected with the side wall of the cylinder head cover 2, and side core pulling is not required to be performed on the side surface of the cylinder head cover 2 during processing of the cylinder head cover 2, so that the structure of a die of the cylinder head cover 2 can be simplified, and the processing difficulty of the cylinder head cover 2 is further reduced.

On this basis, when tightening the bolt that wears to locate locating hole 131 and connecting hole, can use the installation sleeve to screw up the bolt generally, because the restriction in space, heat insulating board 11 can appear interfering with the installation sleeve, as shown in fig. 2, be provided with a plurality of recess 111 of dodging on the side that heat insulating board 11 deviates from cylinder head cover 2, a plurality of recess 111 of dodging and a plurality of locating hole 131 one-to-one, when screwing up the bolt in a locating hole 131, can be with the installation sleeve through the corresponding recess 111 cover of dodging on locating the bolt in this locating hole 131, so as to screw up the bolt, dodge the recess 111 through dodging the installation sleeve, can avoid installation sleeve and cylinder head cover heat exchanger 1 to take place to interfere, thereby the quick installation of cylinder head cover heat exchanger 1 of being convenient for.

In some embodiments, the second mounting plate 13 and the cylinder head cover 2 may also be connected by a screw rod 7, specifically, fig. 5 is a schematic sectional view illustrating a connection point of the second mounting plate 13 and the cylinder head cover 2 according to an exemplary embodiment, as shown in fig. 1 and 5, the power assembly further includes the screw rod 7 and the nut 8, the screw rod 7 includes a first threaded section 71, a positioning flange 72, and a second threaded section 73 that are sequentially connected together, the positioning flange 72 is located on a side of the second mounting plate 13 near the opening of the cylinder head cover 2, the first threaded section 71 is connected to a side of the positioning flange 72 near the second mounting plate 13, and the second threaded section 73 is connected to a side of the positioning flange 72 facing away from the second mounting plate 13.

In the mounting, the first thread section 71 of the screw 7 is inserted into the positioning hole 131 on the second mounting plate 13 from the side close to the opening of the cylinder head cover 2, and the positioning flange 72 is brought into abutment with the side of the second mounting plate 13 close to the opening of the cylinder head cover 2, then the nut 8 is screwed onto the first thread section 71 from the side of the second mounting plate 13 close to the bottom wall of the cylinder head cover 2, then the second thread section 73 is inserted into the connecting hole corresponding to the positioning hole 131 on the second connecting plate, and into the fastening hole corresponding to the connecting hole on the intake cylinder cover (not shown in the figure), then a nut is screwed onto the second thread section 73 from the side of the fastening hole away from the connecting hole, and then the nut and the nut 8 are both screwed to complete simultaneous fastening of the second mounting plate 13, the cylinder head cover 2 and the cylinder head cover.

The fastening hole may be configured as a threaded hole, the second threaded section 73 may be screwed with the fastening hole, and the nut 8 may be screwed onto the first threaded section 71, so as to complete simultaneous fastening of the second mounting plate 13, the cylinder head cover 2, and the cylinder head cover.

In some embodiments, in order to reduce heat flow from the end of the second mounting plate 13 near the opening of the cylinder head cover 2 (i.e., the junction of the second mounting plate 13 and the cylinder head cover 2) to the cylinder head cover 2, which causes the cylinder head cover 2 to age, as shown in fig. 2, a bent portion 132 is provided at the second end of the second mounting plate 13, the bent portion 132 being bent in a direction away from the bottom wall of the cylinder head cover 2. That is, the bent portion 132 can shield the junction of the second mounting plate 13 and the cylinder head cover 2, thereby reducing the amount of heat flowing from the junction of the second mounting plate 13 and the cylinder head cover 2 to the cylinder head cover, reducing the possibility of thermal aging of the cylinder head cover 2, and from the moment, improving the heat insulating effect of the cylinder head cover heat shield 1.

In some embodiments, fig. 6 is a schematic front view of the cylinder head cover heat shield according to an exemplary embodiment, in order to enhance the structural strength of the cylinder head cover heat shield 1, as shown in fig. 2 and 6, the side of the cylinder head cover heat shield 1 facing away from the cylinder head cover 2 is provided with a reinforcing rib 9, a first end of the reinforcing rib 9 is located at an end of the heat insulation plate 11 near the second mounting plate 13, a second end of the reinforcing rib 9 is located on the second mounting plate 13, and extends to an end edge of the bending portion 132 facing away from the heat insulation plate 11.

That is, the reinforcing bead 9 includes a first portion 91, a second portion 92, and a third portion 93 that are connected in this order, wherein the first portion 91 is located at an end of the heat insulating plate 11 near the second mounting plate 13, the second portion 92 is located on the second mounting plate 13 and extends in a direction in which the heat insulating plate 11 points toward the bent portion 132, and the third portion 93 is located on the bent portion 132 and extends in a direction in which the bottom wall of the cylinder head cover 2 points toward the opening of the cylinder head cover 2 to an end edge of the bent portion 132 away from the bottom wall of the cylinder head cover 2.

By the arrangement of the reinforcing ribs 9, the structures of the heat insulating plate 11 and the second mounting plate 13 can be reinforced, so that the deformation of the cylinder head cover heat insulating cover 1 is avoided, and the heat insulating effect on the cylinder head cover 2 is prevented from being influenced.

On this basis, since the gas-overflow pipe 4 is a three-way pipe, the first end of the gas-overflow pipe 4 needs to be connected with the cylinder head, the second end of the gas-overflow pipe 4 needs to pass through the gap between the cylinder head cover heat shield 1 and the cylinder head cover 2 and extend from the end where the three-way catalyst 5 is located, and the third end of the gas-overflow pipe 4 needs to pass through the gap between the cylinder head cover heat shield 1 and the cylinder head cover 2 and extend from the end where the supercharger 3 is located.

Under the above arrangement mode, the first end of the air overflow pipe 4 can interfere with one end of the cylinder head cover heat shield 1, which is close to the opening of the cylinder head cover 2, in order to avoid interference between the first end of the air overflow pipe 4 and the cylinder head cover 2, an avoidance space is arranged in the reinforcing rib 9, the avoidance space penetrates through the reinforcing rib 9 towards the direction close to the cylinder head cover 2, and the avoidance space penetrates through the end face of the second end of the reinforcing rib 9, so that the first end of the air overflow pipe 4 extends out of the avoidance space and is connected with the cylinder head, and the avoidance of the first end of the air overflow pipe 4 is realized through the avoidance space, so that interference between the first end of the air overflow pipe 4 and the cylinder head cover heat shield 1 is avoided.

In addition, one end of the supercharger oil inlet pipe 6 also penetrates through the gap between the cylinder head cover heat shield 1 and the cylinder head cover 2 and extends out of the end where the three-way catalyst 5 is located, so that one end of the supercharger oil inlet pipe 6 and the second end of the air overflow pipe 4 interfere with one end of the heat insulating plate 11, which is close to the second end of the air overflow pipe 4, and therefore a avoidance gap is formed at one end of the heat insulating plate 11, which is close to the second end of the air overflow pipe 4, so that one end of the supercharger oil inlet pipe 6 and the second end of the air overflow pipe 4 extend out of the avoidance gap, and therefore the arrangement of positions among the cylinder head cover heat shield 1, the air overflow pipe 4 and the supercharger oil inlet pipe 6 is facilitated.

In some embodiments, fig. 7 is a schematic sectional view of an edge portion of the cylinder head cover heat shield 1 according to an exemplary embodiment, as shown in fig. 7, in order to improve the heat insulation effect of the cylinder head cover heat shield 1, the cylinder head cover heat shield 1 includes a first metal layer 14, a heat insulation layer 15, and a second metal layer 16, the heat insulation layer 15 is located between the first metal layer 14 and the second metal layer 16 and is bonded to both the first metal layer 14 and the second metal layer 16, and the first metal layer 14 is located on a side of the cylinder head cover heat shield 1 near the supercharger 3; the first metal layer 14 and the second metal layer 16 are used for fixedly supporting the heat insulating layer 15, and the heat insulating layer 15 insulates the cylinder head cover 2.

Wherein, the first metal layer 14 and the second metal layer 16 are both made of hot dip aluminized steel plates, and the heat insulation layer 15 is made of ceramic fibers. The aluminized layer of the first metal layer 14 can play a role in reflecting radiant heat, so that the first metal layer 14 can be prevented from being heated too fast, the ceramic fiber has the characteristic of low heat conductivity, and the heat of the first metal layer 14 can be better prevented from being transferred to the second metal layer 16, so that a better heat insulation effect is achieved.

In order to improve the structural strength of the cylinder head cover heat shield 1, the second metal layer 16 includes a supporting portion 161, a transition portion 162 and a pressing portion 163, the supporting portion 161 is located at one side of the heat shield layer 15 away from the supercharger 3, the transition portion 162 is arc-shaped, the concave side of the transition portion 162 faces the heat shield layer 15, a first end of the transition portion 162 is connected with the supporting portion 161, a second end of the transition portion 162 is connected with the pressing portion 163, and the pressing portion 163 is pressed on the side of the first metal layer 14 close to the supercharger 3.

The support part 161, the transition part 162 and the pressing part 163 are sequentially connected together to form a 180-degree flanging structure at the edge of the heat insulation layer 15, so that the heat insulation layer 15 and the first metal layer 14 are wrapped, the structural strength of the edge part of the heat insulation cover 1 of the cylinder cover is increased, and the transition part 162 can also prevent the ceramic fibers from falling off due to powder generated after the ceramic fibers are baked at a high temperature.

In addition, the heat shield 1 of the cylinder head cover adopts a three-layer structure and can be manufactured by adopting an integral blanking process, and the specific process is as follows: firstly, 3 blank plates with the same shape and the same size are placed on a punch in the sequence of an outer layer, an intermediate layer and an inner layer, wherein the outer layer blank plates correspond to the second metal layer 16, the intermediate layer blank plates correspond to the heat insulation layer 15, and the inner layer blank materials correspond to the first metal layer 14.

And (3) carrying out integral stamping and drawing on the placed 3 layers of blank materials to form an integral die, then carrying out trimming on the integral die according to the shape and the size of the installation space of the cylinder outer cover heat shield, then carrying out trimming on the inner layer and the middle layer of the integral die to enable the outer layer to leak out a part to be turned, then carrying out turn-up 90 DEG and 45 DEG on the part to be turned of the outer layer towards the middle layer and the inner layer in sequence, then flattening the turn-up, enabling the turn-up to be completely wrapped on the middle layer and the inner layer, shaping the cylinder outer cover heat shield after the turn-up is completed, and finally punching at the corresponding position of the cylinder outer cover heat shield after the shaping is completed to complete the manufacture of the cylinder outer cover heat shield.

The present utility model is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present utility model should be covered by 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. A cylinder head cover heat shield, comprising:

the heat insulation plate is arranged between the cylinder head cover and the supercharger so as to insulate the cylinder head cover;

the first end of the first mounting plate is connected with one end of the heat insulation plate, the second end of the first mounting plate extends along the direction close to the cylinder head cover, and the first mounting plate is used for being connected with the bottom wall of the cylinder head cover;

the first end of the second mounting plate is connected with the other end opposite to the heat insulation plate, the second end of the second mounting plate extends along the direction deviating from the cylinder head cover, and the second mounting plate is used for being connected with the side wall of the cylinder head cover.

2. The cylinder head cover heat shield according to claim 1, wherein a bent portion is provided at the second end of the second mounting plate, the bent portion being bent in a direction away from the bottom wall of the cylinder head cover.

3. The cylinder head cover heat shield according to claim 2, wherein a reinforcing rib is arranged on the side surface of the cylinder head cover heat shield, which faces away from the cylinder head cover, a first end of the reinforcing rib is located at one end of the heat insulation plate, which is close to the second mounting plate, and a second end of the reinforcing rib is located on the second mounting plate and extends to the edge of one end of the bending part, which is far away from the heat insulation plate.

4. The heat shield for the cylinder head cover according to claim 3, wherein an avoidance space is formed in the reinforcing rib, the avoidance space penetrates through the reinforcing rib in a direction approaching the cylinder head cover, the avoidance space penetrates through the end face of the second end of the reinforcing rib, and the avoidance space is used for avoiding the first end of the air overflow pipe;

an avoidance gap is formed in one end of the heat insulation plate, and the avoidance gap is used for avoiding the second end of the air overflow pipe.

5. The cylinder head cover heat shield according to any one of claims 1 to 4, wherein a plurality of positioning holes are formed in the second mounting plate at intervals, and the positioning holes are used for connecting the cylinder head cover;

the side of the heat insulation plate, which is away from the cylinder head cover, is provided with a plurality of avoidance grooves, the avoidance grooves correspond to the positioning holes one by one, and the avoidance grooves are used for avoiding the mounting sleeve.

6. The cylinder head cover heat shield of claim 5, wherein the first mounting plate is provided with a plurality of mounting holes arranged at intervals, and the mounting holes are used for connecting the cylinder head cover.

7. The cylinder head cover heat shield according to any one of claims 1-4, comprising a first metal layer, a heat insulating layer, and a second metal layer, the heat insulating layer being located between and in close proximity to the first and second metal layers, the first metal layer being located on a side of the cylinder head cover heat shield adjacent to a supercharger;

the second metal layer comprises a supporting portion, a transition portion and a pressing portion, wherein the supporting portion is located on one side, far away from the supercharger, of the heat insulation layer, the transition portion is arc-shaped, the concave side of the transition portion faces the heat insulation layer, the first end of the transition portion is connected with the supporting portion, the second end of the transition portion is connected with the pressing portion, and the pressing portion is pressed on the side, close to the supercharger, of the first metal layer.

8. A powertrain, comprising:

the cylinder head cover heat shield according to any one of claims 1 to 7;

a cylinder head cover located on a first side of the cylinder head cover heat shield;

the first connecting plate is arranged on the bottom wall of the cylinder head cover, is parallel to the first mounting plate and is connected with the first mounting plate;

the second connecting plate is arranged on the side wall of the cylinder head cover and is close to the opening position of the cylinder head cover, and the second connecting plate is parallel to the second mounting plate and is connected with the second mounting plate;

a supercharger located on a second side of the cylinder head cover heat shield;

and the part of the overflow pipe is positioned on the first side of the cylinder head cover heat shield.

9. The powertrain of claim 8, wherein the second mounting plate is provided with a plurality of positioning holes arranged at intervals;

the powertrain further includes:

the screw comprises a first thread section, a positioning flange and a second thread section which are sequentially connected together, the positioning flange is positioned on one side, close to the opening of the cylinder head cover, of the second mounting plate and is in butt joint with the second mounting plate, the first thread section penetrates through the positioning hole, and the second thread section is connected with the cylinder head cover;

and the nut is positioned on one side of the second mounting plate, which is close to the bottom wall of the cylinder head cover, and is screwed on the first thread section.

10. A vehicle comprising a powertrain as claimed in claim 8 or 9.