CN219242071U

CN219242071U - Automobile, engine and glow plug arrangement structure

Info

Publication number: CN219242071U
Application number: CN202320077147.5U
Authority: CN
Inventors: 王学滨; 卢元辉; 张鹏涛; 周长奉; 朱国栋; 房祥辉
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-06-23
Anticipated expiration: 2033-01-09

Abstract

The utility model discloses an automobile, an engine and a glow plug arrangement structure, which comprises a plurality of glow plugs, wherein a heating probe of each glow plug is inserted into a corresponding preheating chamber, and the glow plugs are vertically arranged relative to the preheating chamber; the effective heating area of the glow plug is maximized, the arrangement position of the heating probe of the glow plug is determined to be close to the theoretical optimal position through simulation analysis, the air quantity of air in the cylinder flowing through the heating area of the glow plug is maximized, and therefore the heating efficiency of gas in the cylinder can be effectively improved. Meanwhile, wiring arrangement of the wire harness is realized through the bearing groove of the wire harness support, a plurality of wire outlets are formed in the groove wall of the bearing groove, the wire outlets are in one-to-one correspondence with the glow plugs and located at positions close to the corresponding glow plugs, so that the glow plug branch wire harness is connected with the corresponding glow plugs through the wire outlets, the wire harness support is used for fixing and protecting the glow plug wire harness in the cylinder, and reliable technical guarantee is provided for performance stability of the glow plugs.

Description

Automobile, engine and glow plug arrangement structure

Technical Field

The utility model relates to the technical field of automobiles, in particular to an automobile, an engine and a glow plug arrangement structure.

Background

In the prior art, for the heating treatment of engine air intake, a typical treatment mode is realized by adopting an air intake heating grid, and the heating mode has the problems of low heating efficiency, easiness in baking surrounding sensors and other devices; another typical treatment is realized by adopting a heating mode of a glow plug, and the scheme has the defects that the inclination angle of the glow plug is too large, the extension length of the glow plug is insufficient, so that the effective heat dissipation area of a heating probe of the glow plug is greatly reduced, and the heating efficiency of the glow plug is lower.

In addition, the harness plug of the existing glow plug is external, so that the glow plug is disordered in harness appearance and free of reliable fixation, and low in reliability and attractive appearance.

In view of this, there is a need for an optimal design for the arrangement of the glow plug and its wiring harness.

Disclosure of Invention

The purpose of the application is to provide an arrangement structure of an automobile, an engine and a glow plug, which can effectively improve the heating efficiency of the glow plug; another object of the present application is to improve the wiring harness arrangement of a glow plug.

The glow plug arrangement structure comprises a plurality of glow plugs, wherein a heating probe of each glow plug is inserted into a corresponding preheating chamber on an engine cylinder body, and the glow plugs are vertically arranged relative to the preheating chambers.

Optionally, the device further comprises a wire harness bracket arranged on the top surface of the engine cylinder body, wherein the wire harness bracket comprises a bearing groove for containing wire harnesses, a plurality of wire outlets are formed in the groove wall of the bearing groove, the wire outlets are arranged in one-to-one correspondence with the glow plugs and are positioned at positions close to the corresponding glow plugs, so that the glow plug branch wire harnesses are connected with the corresponding glow plugs through the wire outlets.

Optionally, the harness support is disposed along a direction of sequential arrangement of the plurality of glow plugs.

Optionally, the groove wall of the harness bracket is fixedly connected with the outer surface of the glow plug.

Optionally, the supporting groove of the wire harness bracket is provided with an upward notch.

Optionally, the wire harness connecting device further comprises a cylinder penetrating piece, wherein the cylinder penetrating piece is inserted into one side end part of the engine cylinder body, the cylinder penetrating piece is provided with a wire hole which is arranged in a penetrating mode, one side hole end of the wire hole is arranged outside one side end part of the engine cylinder body, and the other side hole end of the wire hole is arranged in the top surface of the engine cylinder body, so that the wire harness is connected with the cylinder outside wire harness.

Optionally, a mounting hole is formed in the engine cylinder body, and the cylinder penetrating piece is inserted and fixed in the mounting hole.

Optionally, the cylinder penetrating piece is in threaded connection with the mounting hole; or the cylinder penetrating piece and the mounting hole are welded and fixed.

The embodiment of the application also provides an engine, which comprises an engine cylinder body and a glow plug inserted in a preheating chamber of the engine cylinder body, wherein the glow plug adopts the glow plug arrangement structure.

The embodiment of the application also provides an automobile, which comprises an engine, wherein the engine adopts the engine.

Compared with the prior art, the technical scheme has the following advantages: by applying the glow plug arrangement structure provided by the embodiment of the application, the heating probe of each glow plug is inserted into a corresponding preheating chamber on the engine cylinder body, and the glow plugs are vertically arranged relative to the preheating chamber. On the whole, the effective heating area of the glow plug is maximized, the arrangement position of the heating probe of the glow plug is determined to be close to the theoretical optimal position through simulation analysis, the air quantity of air in the cylinder flowing through the heating area of the glow plug is maximized, and the heating efficiency of gas in the cylinder can be effectively improved.

In the alternative scheme of the utility model, the engine cylinder further comprises a wire harness bracket arranged on the top surface of the engine cylinder body, wiring arrangement of the wire harness is realized through a bearing groove of the wire harness bracket, a plurality of wire outlets are formed in the groove wall of the bearing groove, the wire outlets are arranged in one-to-one correspondence with the glow plugs and are positioned close to the corresponding glow plugs, so that the glow plug branch wire harness is connected with the corresponding glow plugs through the wire outlets. The arrangement is that the glow plug wire harness adopts an integrated and modularized design, and the glow plug wire harness in the cylinder is fixed and protected through the wire harness bracket, so that reliable technical guarantee is provided for the performance stability of the glow plug.

In another alternative of the present utility model, a cylinder penetrating member provided at one side end of the engine block is inserted, and the cylinder penetrating member has a wiring hole opened therethrough, specifically, one side hole end of the wiring hole is externally provided at one side end of the engine block, and the other side hole end is internally provided at the top surface of the engine block so that the wire harness is connected with the cylinder outside wire harness. The arrangement reliably realizes the reliable connection between the wire harness arranged in the wire harness support bearing groove and the cylinder outer wire harness, and can effectively consider the wiring arrangement of the branch wire harness of the internal preheating plug and the external wire harness.

Drawings

FIG. 1 is a schematic illustration of a typical prior art glow plug arrangement;

FIG. 2 is a schematic view of the arrangement of a glow plug according to an embodiment;

FIG. 3 is a schematic view of the arrangement of a glow plug and a wiring harness according to an embodiment;

FIG. 4 is a cross-sectional view of the cylinder block of the engine block and the cylinder block of FIG. 3.

Fig. 2-4:

glow plug 1, heating probe 11, engine block 2, preheating chamber 21, mounting hole 22, harness bracket 3, holding groove 31, outlet 32, harness 4, glow plug branch harness 41, cylinder penetrating member 5, wiring hole 51.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings and specific embodiments.

In the related art, a typical engine intake air heating treatment is implemented by using a glow plug, and reference is made to fig. 1, which shows a schematic layout of a glow plug in the prior art. In the scheme, the inclination angle of the glow plug 01 is overlarge, and the extension length of the glow plug is insufficient, so that the effective heat dissipation area of a glow plug heating probe is greatly reduced, and the heating efficiency of the glow plug is lower.

Based on this, the present example provides a glow plug arrangement, please refer to fig. 2, which is a schematic diagram of the glow plug arrangement according to the present embodiment.

The glow plug arrangement comprises a plurality of glow plugs 1, one for each cylinder of the engine block (not shown). Wherein the heating tip 11 of each glow plug 1 is inserted in a corresponding preheating chamber 21 on the engine block 2, as shown, the glow plugs 1 are arranged vertically with respect to the preheating chamber 21. The main structure of the engine block 2 and the configuration relationship between the cylinder and the preheating chamber are not the core utility model point of the present application, and can be realized by those skilled in the art based on the prior art, so the description is not repeated herein.

In the scheme, based on the structural characteristics that the glow plug 1 is vertically arranged relative to the preheating chamber 21, the effective heating area of the glow plug 1 is maximized, the arrangement position of the heating probe of the glow plug 1 is determined to be close to the theoretical optimal position through simulation analysis, the air quantity of air in a cylinder flowing through the heating area of the glow plug is maximized, and the heating efficiency of gas in the cylinder can be effectively improved.

Referring to fig. 3, a schematic diagram of the arrangement relationship of the glow plug and the wire harness according to the present embodiment is shown.

The engine block 2 is shown configured with five glow plugs 1, each glow plug 1 being arranged vertically, and heating probes 11 being inserted in the respective preheating chambers. The top surface of the engine block 2 is provided with a wire harness support 3, and the wire harness support 3 includes a support groove 31 for receiving the wire harness 4 to restrain the wire harness 4 of the stationary glow plug and provide a protective function.

In this embodiment, a plurality of outlets 32 are provided on the wall of the holding groove 31, and the outlets 32 are disposed in one-to-one correspondence with the glow plugs 1 and are located at positions close to the corresponding glow plugs 1 so that the glow plug branch harness 41 is connected to the corresponding glow plugs 1 via the outlets 32. In this way, the restraint fixation of the glow plug branch harness 41 can be maximally formed. On the basis, the glow plug wire harness can adopt an integrated and modularized design, is fixed through the wire harness bracket and protects the glow plug wire harness in the cylinder, and provides reliable technical guarantee for the performance stability of the glow plug.

Wherein the wire harness support 3 is provided along a direction in which the plurality of glow plugs 1 are sequentially arranged. It will be appreciated that the plurality of glow plugs 1 are not limited to linear distribution, and the engine block 2 is distributed with associated components or structures adapted thereto, and the body forms of the harness support 3 may be staggered accordingly, so as to fully utilize the assembly space to achieve the functional requirement of restraining and fixing the harness. That is, the body shape of the wire harness support 3 may be determined according to the actual arrangement of the different engine blocks.

In this embodiment, the supporting groove 31 of the wire harness bracket 3 has an upward notch to facilitate rapid assembly of the wire harness. Meanwhile, the groove wall of the supporting groove 31 is fixedly connected with the outer surface of the glow plug 1, in other words, the groove wall of the supporting groove 31 is fixedly connected with the body part of the glow plug 1 exposed out of the engine cylinder body 2.

Further, for reliable connection of the wire harness and the cylinder outside wire harness, a cylinder penetrating member 5 may be provided at one side end portion of the engine block 2, the cylinder penetrating member 5 being inserted into one side end portion of the engine block 2, and the cylinder penetrating member 5 having a wiring hole 51 penetrating therethrough. Referring also to fig. 4, a cross-sectional view of the assembled relationship of the cylinder block 2 and the cylinder block 5 is shown.

As shown in fig. 3 and 4, one hole end of the wiring hole 51 is externally provided at one side end of the engine block 2, and the other hole end is internally provided at the top surface of the engine block 2 so that the wire harness 4 is connected to an out-of-cylinder wire harness (not shown). Therefore, the reliable connection between the wire harness 4 arranged in the wire harness support 3 bearing groove and the cylinder outer wire harness can be reliably realized, and the wiring arrangement of the branch wire harness of the internal preheating plug and the wiring arrangement of the external wire harness can be integrally considered.

Here, the engine block 2 is provided with a mounting hole 22, and the cylinder penetrating member 5 is inserted and fixed in the mounting hole 22. In particular, the assembly and fixing of the cylinder penetrating member 5 may be realized in different configurations.

For example, but not limited to, the outer surface of the cylinder penetrating member 5 may be configured with external threads, and the mounting hole 22 may be correspondingly configured with internal threads, the two being fixedly threaded, suggesting a detachable connection relationship; the assembly operation is convenient, and the overhaul and maintenance operation is convenient to execute.

For another example, the cylinder penetrating member 5 and the mounting hole may be fixed by a welding process.

In addition to the foregoing glow plug arrangement, the present embodiment also provides an engine including an engine block 2 and a glow plug 1 inserted in a preheating chamber 21 of the engine block, the glow plug 1 adopting the glow plug arrangement as described above. It should be appreciated that the implementation of other functions of the engine is not the core utility model point of the present application, and those skilled in the art can implement it based on the prior art, so it is not repeated herein.

In addition to the glow plug arrangement and engine described above, this embodiment also provides an automobile comprising an engine employing an engine as described above. Similarly, the implementation manner of other functional components of the automobile is not the core utility model point of the application, and those skilled in the art can implement the implementation manner based on the prior art, so the description is omitted herein.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims

1. A glow plug arrangement comprising a plurality of glow plugs, each said glow plug having a heating probe inserted in a respective preheating chamber on an engine block, and said glow plugs being arranged vertically with respect to said preheating chambers;

the wire harness support comprises a bearing groove for containing the wire harness, a plurality of wire outlets are formed in the groove wall of the bearing groove, the wire outlets are arranged in one-to-one correspondence with the glow plugs and located at positions close to the corresponding glow plugs, so that the glow plug branch wire harness is connected with the corresponding glow plugs through the wire outlets.

2. The glow plug arrangement according to claim 1, wherein said wire harness support is provided along a direction of sequential arrangement of said plurality of glow plugs.

3. The glow plug arrangement according to claim 1 or 2, wherein the groove wall of the harness bracket is fixedly connected with the outer surface of the glow plug.

4. The glow plug arrangement according to claim 3, wherein said harness support cradle has an upwardly opening notch.

5. The glow plug arrangement according to claim 3, further comprising a cylinder penetrating member, said cylinder penetrating member being interposed at one side end portion of said engine block, and said cylinder penetrating member having a wiring hole therethrough, one side hole end of said wiring hole being externally disposed at one side end portion of said engine block, and the other side hole end being internally disposed at a top surface of said engine block so that said wire harness is connected with an outside-cylinder wire harness.

6. The glow plug arrangement according to claim 5, wherein said engine block is provided with mounting holes, said cylinder penetrating members being inserted and secured in said mounting holes.

7. The glow plug arrangement of claim 6, wherein said cylinder penetrating member is threadably connected to said mounting hole or said cylinder penetrating member is welded to said mounting hole.

8. An engine comprising an engine block and a glow plug inserted in a preheating chamber of the engine block, characterized in that the glow plug adopts the glow plug arrangement according to any one of claims 1 to 7.

9. An automobile comprising an engine, wherein the engine employs the engine of claim 8.