Heat insulation structure of plug-in hybrid / hybrid power automobile forecabin engine exhaust pipe

Abstract

The utility model discloses a heat insulation structure of an exhaust pipe of a forecabin engine of a plug-in hybrid / hybrid power automobile, which belongs to the technical field of automobiles and comprises an aerogel layer arranged outside the exhaust pipe, stainless steel is coated outside the aerogel layer, a heat insulation cover is arranged at the position of the exhaust pipe close to an easy-to-damage part, and the heat insulation cover is connected with the aerogel layer. And the interior of the heat insulation cover is vacuum. The heat insulation structure is very light and thin, and the heat insulation cover is only arranged at the position close to the easily damaged part, so that the occupied space is smaller; and moreover, the heat insulation performance is more excellent, and the heat insulation of the exhaust pipe with the peak working temperature of 750 DEG C can be realized to 80 DEG C.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile, especially relates to a heat insulation structure of plug -in hybrid / hybrid car front compartment engine exhaust pipe. BACKGROUND

[0002] Under the current automobile industry environment, plug -in hybrid / hybrid car as a new energy vehicle is concerned, is widely valued by domestic and foreign main machine factory, is being industrially developed. Compared with traditional fuel automobile, plug -in hybrid / hybrid car has good economy, power, and compared with pure electric vehicle, is not bound by the endurance mileage, and the charging time is short, can better satisfy the use demand of customer.

[0003] The power system of plug -in hybrid / hybrid car is generally composed of a generator and traditional fuel engine. Part of high -end vehicle: such as BYD E three parties / E four parties is composed of three electric machines or four electric machines + fuel engine + electric control (more high -end four -wheel drive is required). In appearance, the designer moves the front wheel forward, and the front compartment space design is smaller and smaller, leaves more space to the passenger, so as to improve the comfort. Thus, the space left for the engine is smaller, and compared with the traditional fuel vehicle, the heat insulation effect of the engine exhaust pipe in the narrow space is put forward to new requirements and challenges. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of heat insulation structure of plug -in hybrid / hybrid car front compartment engine exhaust pipe to solve the deficiencies in the prior art.

[0005] To achieve the above-mentioned utility model purposes, the technical scheme adopted by the utility model is as follows:

[0006] A kind of heat insulation structure of plug -in hybrid / hybrid car front compartment engine exhaust pipe, comprising: aerogel layer being arranged at the outside of exhaust pipe, the outside of the aerogel layer is covered with stainless steel, the position of exhaust pipe close to vulnerable part is provided with heat shield, the inside of the heat shield is provided with vacuum.

[0007] Further, the cover body of the heat shield includes: outer stainless steel layer and inner stainless steel layer, the outer stainless steel layer and inner stainless steel layer are filled with non-asbestos.

[0008] Further, the thickness of the outer stainless steel layer and inner stainless steel layer is 1mm, and the thickness of the non-asbestos is 0.5mm.

[0009] Further, the thickness of the aerogel layer is 8mm.

[0010] The heat insulation structure of plug -in hybrid / hybrid car front compartment engine exhaust pipe provided by the utility model has the following advantages compared with the prior art:

[0011] The heat insulation structure is very light and thin, and the heat insulation cover is arranged only at the position close to the vulnerable part, and the occupied space is smaller, and the heat insulation performance is more excellent, and the exhaust pipe with a peak working temperature of 750 DEG C can be insulated to 80 DEG C. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0013] Figure 1 The present application is a structural schematic diagram.

[0014] In the figure: 1-exhaust pipe, 2-aerogel layer, 3-heat insulation cover. DETAILED DESCRIPTION

[0015] The technical scheme of the present application will be further described below in combination with the drawings and embodiments:

[0016] Reference Figure 1 As shown in the figure, the utility model provides a kind of heat insulation structure of plug-in hybrid / hybrid car front cabin engine exhaust pipe, comprising: aerogel layer 2 being arranged in the outside of exhaust pipe 1, the outside of the aerogel layer 2 is covered with stainless steel, the position close to vulnerable part of exhaust pipe 1 is provided with heat insulation cover 3, the inside of heat insulation cover 3 is provided with vacuum.The outer diameter of exhaust pipe 1 is 57mm, and is made of 3 star stainless steel.The vulnerable part includes: water channel, rubber tube, electronic control component and the like.

[0017] As a preferred embodiment, the thickness of the aerogel layer 2 is 8mm. The aerogel layer 2 can insulate the exhaust pipe with a peak working temperature of 750 DEG C to 450 DEG C.

[0018] As a preferred embodiment, the cover body of the heat insulation cover 3 includes: outer stainless steel layer and inner stainless steel layer, the outer stainless steel layer and the inner stainless steel layer are filled with asbestfree. The thickness of the outer stainless steel layer and the inner stainless steel layer is 1mm, and the thickness of the asbestfree is 0.5mm. The heat insulation cover 3 can insulate 450 DEG C to 80 DEG C.

[0019] The heat insulation structure is very light and thin, and the heat insulation cover 3 is arranged only at the position close to the vulnerable part, and the occupied space is smaller, and the heat insulation performance is more excellent, and the exhaust pipe with a peak working temperature of 750 DEG C can be insulated to 80 DEG C.

[0020] In the description of the present application, it should be noted that the terms "upper", "lower", and the like are used for indicating the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] It should be noted that in the present application, relational terms such as "first" and "second", and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent in such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or apparatus including the element.

[0022] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A heat insulation structure for the exhaust pipe of the engine in the front compartment of a plug-in hybrid / hybrid vehicle, characterized in that, include: An aerogel layer (2) is provided outside the exhaust pipe (1), the aerogel layer (2) is covered with stainless steel, and a heat insulation cover (3) is provided near the vulnerable parts of the exhaust pipe (1), and the interior of the heat insulation cover (3) is vacuum-sealed.

2. The heat insulation structure for the exhaust pipe of the engine in the front compartment of a plug-in hybrid / hybrid vehicle according to claim 1, characterized in that, The heat insulation cover (3) includes an outer stainless steel layer and an inner stainless steel layer, with asbestos-free material filling the space between the outer and inner stainless steel layers.

3. The heat insulation structure for the exhaust pipe of the engine in the front compartment of a plug-in hybrid / hybrid vehicle according to claim 2, characterized in that, The outer stainless steel layer and the inner stainless steel layer have a thickness of 1 mm, and the asbestos-free layer has a thickness of 0.5 mm.

4. The heat insulation structure for the exhaust pipe of the engine in the front compartment of a plug-in hybrid / hybrid vehicle according to claim 1, characterized in that, The thickness of the aerogel layer (2) is 8 mm.

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