JP3956645B2 - Car engine room structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an engine room structure of an automobile.
[0002]
[Prior art]
In the engine room structure of an automobile, for example, as disclosed in Japanese Patent Laid-Open No. 11-321708, a substantially vertical partition wall in which a vehicle width direction end is joined to left and right hood ridge panels on the front side of a dash panel. Is provided to improve sound insulation and heat insulation for the passenger compartment.
[0003]
[Problems to be solved by the invention]
Electric parts such as a battery, fuse box and relay box are mounted in the engine room, and hydraulic parts such as a brake master cylinder, clutch master cylinder and ABS actuator are disposed on the dash panel inside the engine room. However, these electrical components and hydraulic components need to be thermally protected so that they are not affected by heat from a heat source such as an engine or an exhaust manifold.
[0004]
However, the conventional structure has a structure in which a vertical partition is provided on the front side of the dash panel for the purpose of improving sound insulation and heat insulation with respect to the passenger compartment, and is provided below the space between the vertical partition and the dash panel. Since the side is open, even if a component that requires heat protection (hereinafter referred to as a heat-required protection component) is mounted in the space portion, sufficient heat protection cannot be expected.
[0005]
Therefore, the present invention provides a vehicle engine room structure that can reliably protect heat-requiring parts while improving sound insulation and heat insulation against the vehicle interior, and can further increase the rigidity of the vehicle body around the dash panel. It is to provide.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, an engine of an automobile in which side members extending horizontally in the vehicle front-rear direction are provided on both sides in the vehicle width direction of the engine room and a kick-up portion bent in the vertical direction is provided on the rear side. In the room structure,
A substantially horizontal first partition wall is formed on the front side of the dash panel across the left and right hood ridge panels to partition the engine room in the vertical direction, and the rear end of the first partition wall is bonded to the dash panel.
A second bulkhead is provided at the front end of the first bulkhead to divide the engine compartment in the front-rear direction;
The first and second partition walls define a room for mounting a heat protection component on the front side of the dash panel, and the first partition wall is positioned on the horizontal upper wall in front of the kick-up portion of the side member. The vehicle is characterized in that it is arranged so as to be opposed to each other in substantially the same position in the vehicle vertical direction and in the vehicle longitudinal direction .
[0007]
The invention according to claim 2 is the engine room structure according to claim 1, characterized in that the end portion in the vehicle width direction of the second partition wall is joined and fixed from the side surface to the upper surface of the strut tower. Yes.
[0008]
The invention according to claim 3 is the engine room structure according to claim 1 or 2, wherein the cross member is joined and disposed across the front end of the first partition and the lower surface of the dash panel. A closed cross section extending in the vehicle width direction is formed by the partition wall, the dash panel, and the cross member, and the kick-up portion of the side member is joined and fixed to the lower surface of the cross member.
[0009]
【The invention's effect】
According to the first aspect of the present invention, the mounting room provided on the front side of the dash panel in the engine room is partitioned from the engine room in the vertical direction by the first partition, and is defined by the second partition. Since it is partitioned in the front-rear direction and separated from the engine room in the up-down direction and the front-rear direction, heat protection parts such as electrical parts and hydraulic parts arranged in the mounting room are used for the engine unit, the exhaust manifold, etc. Therefore, it is possible to reliably protect against the heat of the heat source, and to avoid the deterioration of the function.
[0010]
In addition, a cowl box and a box-like mounting room are arranged in the front and back of the dash panel, so that sound insulation and heat insulation for the passenger compartment can be improved, and the vehicle body rigidity around the dash panel can be increased. it can.
[0011]
According to the invention described in claim 2, in addition to the effect of the invention of claim 1, the vehicle width direction end of the second partition wall constituting the front wall of the mounting room extends from the side surface to the upper surface of the strut tower. Since the box-like mounting room functions as a strut tower bar that connects the left and right strut towers, it can increase the inclining rigidity of the strut tower, and by combining with these left and right strut towers The vehicle body rigidity around the dash panel can be further increased.
[0012]
According to the third aspect of the present invention, in addition to the effects of the first and second aspects of the present invention, the cross member is arranged on the lower side of the first partition wall constituting the bottom wall of the mounting room in the vehicle width direction. A closed cross-sectional portion extending to the vehicle interior is formed, and the heat insulation effect of the closed cross-sectional portion is obtained, so that the heat protection effect of the heat protection components arranged in the mounting room can be enhanced, and the sound insulation and insulation for the vehicle compartment can be improved. Thermal property can be further enhanced.
[0013]
In addition, since the mounting room and the closed cross-section are continuously connected over the entire upper and lower areas on the front side of the dash panel, the rigidity of the vehicle body around the dash panel can be further increased, and the engine unit moves backward during a frontal collision. In this case, energy absorption can be performed by buckling deformation of the mounting room and the closed cross section, and deformation of the dash panel toward the passenger compartment can be suppressed to a small extent.
[0014]
On the other hand, the side member has a kick-up part that is bent in the vertical direction at the part connected to the extension part that extends to the floor side, but since this kick-up part is joined to the lower surface of the cross member, The stress concentration of the kick-up portion can be suppressed, and the side member can be appropriately crushed and deformed in the front-rear direction by preventing the vertical deformation starting from the kick-up portion of the side member, Energy absorption efficiency can be increased.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0016]
1-4, 1 shows the dash panel which separates engine room E * R and the vehicle interior R, and functions as an outside air introducing | transducing part of an air conditioner, a wiper storage part, and a vehicle width direction frame | skeleton member in the upper part. A cowl box 2 is formed.
[0017]
On the front side of the dash panel 1, there is provided a mounting room 3 separated from the engine room ER in the vertical direction and the front-rear direction, and a heat protection component 4 is provided in the mounting room 3.
[0018]
In the present embodiment, the front-rear width in the vehicle width direction center of the mounting room 3 is narrowed toward the dash panel 1 so that the front-rear mounting space of the engine units E, U in the engine room E, R is increased. Secured.
[0019]
Therefore, in the present embodiment, the required heat of the hydraulic system such as the brake booster / master cylinder unit 4a, the clutch master cylinder 4b, the ABS actuator 4c, etc. provided through the dash panel 1 on one side of the mounting room 3 is provided. The protective components 4 are centrally arranged, and the heat protection components 4 such as heavy battery 4d, fuse box 4e, relay box 4f, etc. that require thermal protection are centrally arranged on the other side of the mounting room 3. It is.
[0020]
The mounting room 3 is joined and disposed across the left and right hood ridge bunnels 5 constituting the left and right side walls of the engine room ER, and a substantially horizontal first partition wall 6 that partitions the engine room ER in the vertical direction, The second partition wall 7 is joined to the flange 6a at the front end of the first partition wall 6 and rises upward to partition the engine room ER in the front-rear direction. The flange 6b at the rear end of the first partition wall 6 is connected to the dash panel 1 The mounting room 3 is separated from the engine room ER in the vertical direction and the front-rear direction.
[0021]
In the present embodiment, a wheel house rear portion 8 is integrally formed at the vehicle width direction end portion of the first partition wall 6, and the wheel house rear portion 8 is provided with a side edge flange 8 a through the side edge flange 8 a. In addition to being joined to the hood ridge panel 5, the front edge flange 8 b of the wheel house rear portion 8 is joined to the rear surface of the strut tower 9.
[0022]
The second partition wall 7 is formed at a height close to the engine hoods E and F, and is provided with sleeve portions 10 disposed on the upper surface of the strut tower 9 at both ends in the vehicle width direction. Both end portions are joined to the side surface of the strut tower 9 and the sleeve portion 10 is joined to a bracket 11 fixed on the upper surface of the strut tower 9.
[0023]
Reference numeral 12 denotes a cross member disposed on the lower side of the mounting room 3. The cross member 12 has a front edge flange 12 a formed as an arcuate shape of the front edge flange 6 a of the first partition wall 6 and the wheel house rear portion 8. Joined along the base, the rear edge flange 12b is joined to the lower surface of the dash panel 1, and the closed section 13 extending in the vehicle width direction by the first partition 6, the dash panel 1 and the cross member 12 is formed. Forming.
[0024]
Reference numeral 14 denotes a side member which is a longitudinal skeleton member disposed on both sides in the vehicle width direction of the engine room ER, and the lower side of the dash panel 1 is formed on the rear side with a kick-up portion 14A bent in the vertical direction as a boundary. An extension 14B that extends to the rear of the floor is extended, and the kick-up portion 14A of the side member 14 is joined and fixed to the lower surface of the cross member 12 via the flange 14a at the upper edge.
[0025]
In FIG. 4, AC · U denotes an air cleaner unit, RD · U denotes a radiator / fan unit, RT denotes a radiator reservoir tank, and PT denotes a power steering reservoir tank.
[0026]
According to the structure of the above embodiment, the mounting room 3 provided on the front side of the dash panel 1 in the engine room ER is partitioned by the first partition wall 6 from the engine room ER in the vertical direction. The engine compartment ER is partitioned in the front-rear direction by the second partition wall 7 and is separated from the engine room ER in the up-down direction and the front-rear direction. -4f and hydraulic parts 4a-4c and other heat protection components 4 can be reliably protected from the heat of heat sources such as engine units E and U and exhaust manifolds not shown in the figure, avoiding deterioration of function. can do.
[0027]
In addition, since the cowl box 2 and the box-shaped mounting room 3 are arranged in front and rear in front of the dash panel 1, sound insulation and heat insulation for the passenger compartment R can be improved, and the area around the dash panel 1 can be improved. The vehicle body rigidity can be increased.
[0028]
In particular, in this embodiment, the end portion in the vehicle width direction of the second partition wall 7 constituting the front wall of the mounting room 3 is bonded and fixed from the side surface of the strut tower 9 to the upper surface, so that the box-shaped mounting room 3 functions as a strut tower bar for connecting the left and right strut towers 9, can increase the inward rigidity of the strut tower 9, and by combining with the left and right strut towers 9, the vehicle body rigidity around the dash panel 1 can be increased. It can be further increased.
[0029]
Further, a closed cross-section portion 13 extending in the vehicle width direction is formed below the first partition wall 6 constituting the bottom wall of the mounting room 3 by the joint arrangement of the cross members 12. Therefore, the heat protection effect of the heat protection component 4 disposed in the mounting room 3 can be enhanced, and the sound insulation and heat insulation for the vehicle compartment R can be further enhanced.
[0030]
In addition, since the mounting room 3 and the closed cross-section 13 are continuously provided over the entire upper and lower regions on the front side of the dash panel 1, the vehicle body rigidity around the dash panel 1 can be further increased, and the engine can be used during a frontal collision. When the units E and U move backward, energy can be absorbed by buckling deformation of the mounting room 3 and the closed cross-section portion 13, and deformation of the dash panel 1 toward the passenger compartment R can be reduced. Can be suppressed.
[0031]
On the other hand, the side member 14 has a kick-up portion 14A bent in the vertical direction at a portion connected to the extension portion 14B extending to the floor side, and the kick-up portion 14A is joined to the lower surface of the cross member 12. Therefore, the stress concentration of the kick-up portion 14A at the time of the collision can be suppressed, and the side member 14 can be appropriately moved back and forth by preventing the vertical deformation of the side member 14 starting from the kick-up portion 14A. It can be crushed and deformed in the direction, and energy absorption efficiency can be increased.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of the present invention.
FIG. 2 is a perspective view of the same embodiment.
FIG. 3 is an exploded perspective view of a main part of the embodiment.
FIG. 4 is a schematic plan explanatory view of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dash panel 3 Installation room 4 Thermal protection component 5 Hood ridge panel 6 1st partition 7 2nd partition 9 Strut tower 12 Cross member 13 Closed cross-section part 14 Side member 14A Kick-up part

Claims (3)

In the engine room structure of an automobile provided with side members extending horizontally in the vehicle longitudinal direction on both sides in the vehicle width direction of the engine room, and provided with kick-up parts bent in the vertical direction on the rear side part thereof,
A substantially horizontal first partition wall is formed on the front side of the dash panel across the left and right hood ridge panels to partition the engine room in the vertical direction, and the rear end of the first partition wall is bonded to the dash panel.
A second bulkhead is provided at the front end of the first bulkhead to divide the engine compartment in the front-rear direction;
The first and second partition walls define a room for mounting a heat protection component on the front side of the dash panel, and the first partition wall is positioned on the horizontal upper wall in front of the kick-up portion of the side member. An engine room structure for an automobile, characterized in that the engine room structure is continuously provided so as to face each other in substantially the same position in the vehicle vertical direction and in the vehicle longitudinal direction .   The vehicle engine room structure according to claim 1, wherein an end portion of the second partition wall in the vehicle width direction is joined and fixed from a side surface to an upper surface of the strut tower.   A cross member is joined and disposed across the front end of the first partition and the lower surface of the dash panel, and a closed cross-sectional portion extending in the vehicle width direction is formed by the first partition, the dash panel, and the cross member. The engine room structure for an automobile according to claim 1 or 2, wherein the kick-up portion of the side member is joined and fixed to the lower surface of the cross member.

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