JP6414619B1 - Engine heat insulation structure - Google Patents

Abstract

A side wall portion as a heat insulation wall covering the side of an engine can be supported by a shroud upper through the sub tank, and a supporting reinforcement member for supporting and reinforcing the side wall portion is not required, thereby reducing the weight. To plan.
[Solution]
The engine is provided with heat retaining members 51 and 58 that cover at least the upper side and the side of the engine, and the shroud 12 is disposed in front of the engine, and is fixedly supported by a shroud upper 14 provided on the upper part of the shroud. The sub-tank 30 is disposed adjacent to the side wall 58 provided on the side of the engine among the heat retaining members 51 and 58, and the side tank 58 is supported by the sub-tank 30.
[Selection] Figure 1

Description

  The present invention relates to an engine heat insulating structure that includes a heat insulating wall that covers at least the upper side and the side of an engine and in which a shroud is disposed in front of the engine.

  Encapsulation of the engine with at least the upper part of the engine covered with a heat insulation member to improve fuel efficiency by shortening the warm-up time when restarting the engine and reduce wear of the transmission by ensuring heat insulation (lubricity) of the engine oil Structures are known.

  As exemplified by the engine encapsulation structure of Patent Document 1, as a heat retaining member (engine room encapsulation member), in addition to covering the upper part of the engine with a top cover, the side and rear sides of the engine are also side surfaces. Covering with a heat insulating wall such as a cover or a rear cover is effective in that the heat insulating effect can be enhanced.

  On the other hand, if the heat insulation wall is formed so as to cover the engine firmly in order to ensure the heat insulation property, in addition to being easy to increase in size and thickness, the heat insulation wall is not resistant to the vibration of the engine or from the engine. Since heat resistance to the generated heat is also required, it tends to increase in weight.

  For this reason, it is necessary to firmly attach and support the heat retaining wall that has been increased in weight to a rigid body member existing in the vicinity thereof.

  However, Patent Document 1 only shows a description of fixing, for example, a side cover as a heat retaining wall to a vehicle body rigid member such as a side member disposed on the side of the engine room (paragraph of Patent Document 1). [0023]).

  That is, for example, when there is a span distance between the side cover and the vehicle body rigid member, or when an auxiliary machine is interposed between the side cover and the vehicle body rigid member, the side cover is directly connected to the vehicle body rigid member. However, in these cases, a separate connecting support member that connects the side cover and the vehicle body rigid member is required, and the weight increases with the provision of heat insulation walls. Is concerned.

JP 2013-119384 A

  The present invention has been made in view of such a problem, and it becomes possible to support the side wall portion as a heat insulating wall covering the side of the engine to the shroud upper through the sub tank, and the side wall portion is supported. An object is to reduce the weight by eliminating the need for a dedicated reinforcing member for reinforcement.

The present invention is an engine heat retaining structure including a heat retaining member that covers at least the upper side and the side of the engine, and a shroud disposed in front of the engine,
A subtank fixedly supported by a shroud upper provided on the upper part of the shroud is disposed adjacent to a side wall provided on the side of the engine among the heat retaining members, and the side tank is supported by the subtank. Is.

  According to the above configuration, the heat insulating effect of the engine can be enhanced by providing the side wall portion as a heat insulating wall covering not only the upper side of the engine but also the side, and even if the side wall portion is provided, the side wall portion can be used as the sub tank. It becomes possible to support to the shroud upper, and the weight can be reduced to the extent that a dedicated supporting and reinforcing member for supporting and reinforcing the side wall portion becomes unnecessary.

  As an aspect of the present invention, the side wall portion is supported by the sub tank at a plurality of locations in the vertical direction, the upper portion of the sub tank is fixedly supported by the shroud upper, and the lower portion of the sub tank is fixedly supported by the front side frame. It is set as the structure made.

  According to the said structure, since a side wall part is supported in several places by the up-down direction, the support rigidity of the side wall part by a subtank can be improved more.

  As an aspect of the present invention, the sub tank is disposed at substantially the same height as the side wall portion.

  According to the said structure, the heat retention performance of an engine improves more rather than covering the side of an engine only with a side wall part by the double wall effect in a side wall part and a sub tank.

  In other words, in addition to the function as the original radiator sub-tank, the sub-tank can also be used as a support / reinforcing member for the side wall or as a heat retaining member for the engine.

  As an aspect of the present invention, the side wall portion is formed by dividing the upper side wall portion and the lower side wall portion into upper and lower sides, and the sub tank is disposed across the upper side wall portion and the lower side wall portion. It is a thing.

  In this way, by forming the side wall portion by dividing the upper side wall portion and the lower side wall portion into upper and lower sides, only a part of the side wall portion can be attached and detached, so that the entire side wall portion is integrally formed. Also can improve service and maintenance.

  Furthermore, as described above, by disposing the sub tank across the upper side wall and the lower side wall, it is possible to prevent heat from escaping from a portion between the upper side wall and the lower side wall. Can do.

  As an aspect of the present invention, the sub-tank is configured to support each of the upper side wall and the lower side wall.

  According to the above configuration, the upper side wall portion and the lower side wall portion are supported by the sub tank, so that both the upper side wall portion and the lower side wall portion are firmly supported even if the side wall portion is divided. be able to.

  As an aspect of the present invention, a part of the side wall portion is formed by the sub tank.

  According to the above configuration, the dedicated heat insulating wall can be reduced by the amount that the side wall portion forming a part of the protective wall is replaced with the sub tank.

  The present invention is a heat insulation structure for an engine having a heat insulation wall covering at least the upper side and the side of the engine and having a shroud disposed in front of the engine, the side wall provided on the side of the engine among the heat insulation walls. A part of the part is composed of an engine mount bracket for mounting and supporting the engine, and a front part of the side wall part from the engine mount bracket is composed of a sub tank fixedly supported by a shroud upper provided on the upper part of the shroud. Is.

  According to the above configuration, the sub-tank can be substituted for the front portion of the side wall portion from the engine mount bracket.

  That is, the side wall portion can be replaced by the engine mount bracket and the sub-tank that are originally installed on the side of the engine, so that a side wall provided separately on the side of the engine can be omitted.

  According to this invention, it becomes possible to support the side wall portion as a heat insulation wall covering the side of the engine to the shroud upper via the sub tank, and a dedicated support reinforcing member for supporting and reinforcing the side wall portion. Can be reduced in weight.

The perspective view which shows the thermal insulation structure of the engine of this embodiment Side view showing the vehicle side wall of the engine heat insulation structure as seen from the outside in the vehicle width direction The side view which shows the state which removed the sub tank in FIG. Side view showing the right side wall of the engine heat insulation structure as seen from the inside in the vehicle width direction The main part on the right side of the heat insulation structure of the engine of the present embodiment is a plan view (a) in which the upper cover part is shown in phantom, and the plan view in which the upper cover part and the right side wall part are omitted in FIG. ) Perspective view showing sub tank and support bracket EE cross-sectional view of FIG. 2 or 4 Cross-sectional view taken along line B-B in FIG. 2 (a), cross-sectional view of another embodiment shown corresponding to FIG. 8 (a) 2 is a cross-sectional view taken along line D-D in FIG. A cross-sectional view of the main part along the line F-F in FIG. CC sectional view taken on line CC in FIG. FIG. 2 is a cross-sectional view taken along line AA in FIG. 2 (a) and a view shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Prior to the description of the engine heat retaining structure, the vehicle body structure will be described first. In the figure, arrow F indicates the front of the vehicle, arrow U indicates the upper side of the vehicle, arrow IN indicates the inner side in the vehicle width direction, and arrow OUT indicates the outer side in the vehicle width direction. In the following description, “right side” indicates the right side of the vehicle, and “left side” indicates the left side of the vehicle.

  As shown in FIGS. 1, 3, 4, and 11, front side frames 1 that extend from the dash lower panel to the front of the vehicle are provided on both the left and right sides of the engine room.

  The front side frame 1 includes a hat-shaped front side frame inner 2 (see FIGS. 3, 3, and 11) and a flat front side frame outer 3 ( A vehicle body strength member having a closed cross section 1A (see FIG. 11) that extends in the front-rear direction of the vehicle by joining and fixing flange portions on the upper and lower sides to each other (see FIGS. 1 and 11). 1 is provided with a set plate 4 for attaching the crash can (see FIGS. 1, 3, and 4).

  In the drawings, only the front side frame 1 on the right side of the vehicle is shown for convenience of illustration.

  A shroud 12 is provided in front of the vehicle in the engine room (see FIG. 1).

  As shown in FIG. 1, the above-described shroud 12 includes a shroud panel 13 that covers a radiator and a condenser as a heat exchanger, and a shroud upper member 14 that is positioned above the shroud panel 13.

  The shroud panel 13 is integrally formed in a substantially rectangular frame shape by an upper member 13U, a lower member 13L, and left and right side members 13S, 13S that connect the upper and lower members 13U, 13L in the vertical direction. It is provided behind the bumper face opening (not shown).

  The shroud panel 13 is provided with a plurality of openings 13a penetrating in the front-rear direction inside the members 13U, 13L, 13S, 13S in a front view. A plurality of grill shutters (not shown) that can open and close the opening 13a are provided.

  For example, the grille shutter is pivotally supported on both edges of the opening 13a in the vehicle width direction so as to be closed so as to close the opening 13a when the IG is off and open at high speeds. Since the shroud panel 13 also functions as a front wall portion as a heat insulating wall that covers the engine from the front side in a state where the opening portion 13a is closed by the grill shutter in this way, the shroud panel 13 is opened by the upper lid portion 51 described later and the grill shutter. The engine can be efficiently encapsulated from the top to the front by the shroud panel 13 with the portion 13a closed.

  The above shroud door member 14 is formed by integrally connecting shroud door member members 14b, 14b to both ends in the vehicle width direction of a shroud door member center 14a located at the center in the vehicle width direction. 14b are connected to an apron (not shown).

  As shown in FIGS. 1, 3 to 5 (a), 5 (b), and 8 (a), an engine mount bracket 20 that mounts and supports the engine on a front side frame 1 that is a vehicle body strength member is mounted on the right side of the engine. It is provided at the rear.

  The above-described engine mount bracket 20 includes, as shown in FIGS. 1, 3, and 4, a vertical wall-shaped mount bracket body 21 (a vehicle body side mount bracket) formed by aluminum die casting, and FIGS. As shown in FIGS. 4 and 5A, a mount rubber 22 as a buffer member and an arm portion 23 (engine) extending inward in the vehicle width direction (engine) as shown in FIGS. Side mounting bracket).

  The mounting bracket main body 21 has legs 21a and 21b extending downward from the front and rear sides of the lower portion thereof, and is attached to the upper surface of the front side frame 1 (see FIGS. 1, 3, and 4). Further, the arm portion 23 is disposed via the mount rubber 22 in an opening space 21c (see FIGS. 1 to 4 and FIG. 8A) provided in the center portion in the front-rear direction of the upper portion of the mount bracket main body 21. It extends inward in the vehicle width direction (engine) and supports the engine.

  The engine mount bracket 20 is configured such that the engine mount bracket 20 is used as a substitute for the heat insulation wall of the engine in that portion without providing a separate side wall portion at the rear of the engine on the right side of the vehicle.

  As a result, a part of the right side wall portion 58 (to be described later) of the heat retaining member 50 is replaced with the engine mount bracket 20, and a part of the side wall portion 58 is omitted to reduce the weight and cost of the heat retaining member 50. It is configured as follows.

  As shown in FIGS. 1, 2, 5 (a) and 5 (b), a sub tank 30 is disposed in front of the engine mount bracket 20 on the right side of the vehicle with respect to the engine.

  The sub-tank 30 is connected to the radiator by piping, and an overflow portion accompanying the rise in the temperature of the cooling water in the radiator flows in and is stored. On the other hand, if the cooling water in the radiator is lost due to evaporation or the like, the stored cooling water is The cooling water in the radiator is kept at a predetermined amount by returning to step S2.

  As shown in FIG. 6, the sub tank 30 includes a tank main body portion 31 for storing cooling water, and a neck portion 33 that protrudes from the upper surface (upper wall portion 31 u) of the tank main body portion 31 and has a cap 32 attached thereto. One end (not shown) of the pipe connected to the radiator is connected to the water supply port 32 a of the cap 32.

  As shown in FIG. 6, the tank body 31 includes a front wall portion 31f and a rear wall portion 31r (see FIGS. 5 (a) and 5 (b), FIGS. 8 (a), 10, and 12 (a) and 12 (b)). ), A vehicle width inner wall portion 31i, a vehicle width outer wall portion 31o, an upper wall portion 31u, and a bottom wall portion 31d, and are integrally formed. On the outer peripheral surface of the upper portion of the tank body 31 (the upper portions of the outer surfaces of the vehicle width inner wall portion 31i, the front wall portion 31f, the rear wall portion, and the vehicle width outer wall portion 31o), a flange portion 34 is formed over the entire circumferential direction. Has been.

  An inner portion in the vehicle width direction at the lower portion of the tank main body 31 is integrally formed with a downward extending portion 35 that extends downward as compared with the outer portion in the vehicle width direction. Accordingly, the vehicle width inner wall portion 31i extends downward from the vehicle width outer wall portion 31o (see FIGS. 6, 9, and 11), and the outer surface of the vehicle width inner wall portion 31i (of the tank main body portion 31). The substantially whole of the upper and lower sides with respect to the flange portion 34 on the left side surface of the vehicle is formed in a flat surface extending in the vertical direction and in the vehicle width direction.

  As shown in FIGS. 2, 5 (a), 5 (b), 6, 9, and 10, the upper portion of the sub tank 30 is fixedly supported by the shroud upper member 14 via a support bracket 40.

  More specifically, as shown in FIG. 5 (a), the support bracket 40 can be supported on the outer side portion in the vehicle width direction of the upper wall portion 31u of the sub tank 30 with respect to the vehicle width direction inner corner portion. A bracket support portion 36 that is concave with respect to the portion is provided (see FIGS. 6 and 10), and the vehicle width outer flange extends outward from the vehicle width direction outer end of the bracket support portion 36 in the vehicle width direction. A portion 37 (see FIGS. 2, 5B, and 6) is provided, and a front flange portion 38 (FIGS. 5B and 6) that protrudes forward from the inner end in the vehicle width direction of the bracket support portion 36 is provided. 10) is provided.

  As shown in FIGS. 5B, 6, and 10, attachment holes 37 a and 38 a for attachment to the support bracket 40 are provided in each of the vehicle width outer flange portion 37 and the front flange portion 38. Yes.

  The support bracket 40 includes a bracket main body 41 that extends linearly in the vehicle width direction while being supported by the bracket support portion 36, and a bracket vehicle that extends forward and outward in the vehicle width direction from the outer end in the vehicle width direction of the bracket main body 41. The width outside front extending portion 42 and the bracket vehicle width inside front extending portion 43 extending forward from the inner end in the vehicle width direction of the bracket main body portion 41 are integrally formed.

  Further, attachment holes 42a and 43a for attachment to the shroud door upper member side 14b on the right side of the vehicle are formed in the front portions (tip portions) of the bracket vehicle width outer front extension portion 42 and the bracket vehicle width inner front extension portion 43, respectively. Is provided.

  On the other hand, attachment holes 41a and 43b for attachment to the sub tank 30 are provided in the vehicle width direction outer side portion of the bracket body portion 41 and the rear portion (base end portion) of the bracket vehicle width inside front extension portion 43, respectively. ing.

  Further, as shown in FIGS. 5 (a), 5 (b) and 10, the rear edge of the shroud upper member side 14b extends rearward on the inner and outer sides in the vehicle width direction facing the support bracket 40. The flange portions 14F and 14F are integrally formed, and attachment holes 14c and 14d for attachment to the support bracket 40 are provided in the flange portions 14F and 14F, respectively.

  As shown in FIGS. 5A, 5B, 6, and 10, the sub tank 30 and the support bracket 40 are fastened by bolts B and nuts N in the mounting holes 41a and 37a and the mounting holes 43b and 38a, respectively. Has been.

  Further, the shroud upper member side 14b and the support bracket 40 are fastened by bolts B and nuts N in the mounting holes 42a and 14c and the mounting holes 43a and 14d, respectively. Thereby, the upper part of the subtank 30 is attached and fixed to the shroud door member side 14b via the support bracket 40 on each of the inner and outer sides in the vehicle width direction.

  As shown in FIG. 11, the lower portion of the sub tank 30 is fixedly supported by the front side frame 1.

  As shown in FIGS. 2 and 6, a clip-like rubber member 39 protrudes downward on the lower surface and rear portion of the downward extending portion 35 of the tank main body portion 31 so as to be engageable with the front side frame 1. As shown in FIG. 11, the engaging pin 10 protrudes upward from the upper surface portion 2 a so as to be engageable with the sub tank 30 on the upper surface portion 2 a of the front side frame inner 2. In FIG. 2, the front side frame 1 is not shown.

  As shown in FIG. 11, the lower portion of the sub-tank 30 is fixedly supported by the front side frame 1 by inserting the engaging pin 10 into the clip-like rubber member 39 from below and engaging.

  By the way, as shown in FIG.1, FIG3, FIG.4, the upper cover part 51 which covers the upper part of an engine, and the heat insulation wall part (55,58,12) which covers the engine side peripheral surface (periphery side by planar view) It has.

  The heat retaining wall portion includes a shroud 12 disposed in front of the engine, in addition to a rear wall portion 55 covering the rear of the engine and a side wall portion 58 (only the right side of the vehicle is shown) covering the left and right sides.

  The shroud 12 includes a grill shutter that opens and closes an opening 13a provided in the shroud 12, so that the shroud 12 serves as a heat retaining member (front wall portion) that covers the front of the engine in addition to the original function of adjusting the amount of air conduction to the radiator. The function is also used. On the other hand, the upper lid portion 51, the rear wall portion 55, and the left and right side wall portions 58 are provided exclusively as heat insulation members for keeping the engine warm.

As shown in FIG. 4, the upper lid 51 includes a synthetic resin upper surface cover 52 as an outer skin, and a heat retaining member 53 made of glass wool material, urethane material, or the like, which is integrally disposed on the inner surface of the upper surface cover 52. It has.
The upper lid portion 51 has a rear end pivotally supported by the upper end of the rear wall portion 55, and is formed so as to be openable and closable above the engine.

  As shown in FIG. 4, the rear wall portion 55 includes a synthetic resin rear cover 56 as an outer skin, and a heat insulating member 57 made of glass wool material, urethane material, or the like integrally disposed on the inner surface of the rear cover 56. And.

Next, the side wall 58 on the right side of the left and right side walls 58 will be described below.
As shown in FIGS. 1 to 4, 7, 9, and 11, the side wall 58 is divided into upper and lower sides by two members, an upper side wall 61 and a lower side wall 71.

  As shown in FIG. 4 and FIG. 5, FIG. 7, FIG. 9, and FIG. 11, the upper side wall 61 includes an upper side cover 62 made of synthetic resin as an outer skin, and the upper side cover 62. And a heat retaining member 63 made of glass wool material, urethane material, or the like, which is integrally disposed on the inner surface of the material.

  As shown in FIGS. 7, 9, and 11, at the upper end of the upper side surface cover 62 that constitutes the upper side wall portion 61, a flange facing the flange portion 52 i of the outer peripheral edge portion of an upper lid portion 51 described later in the closed state is provided. The part 61a is integrally formed.

  As shown in FIGS. 1 to 4, 7, 8 (a), 9, and 11, the lower side wall 71 includes a lower side cover 72 made of synthetic resin as an outer skin, and the lower side cover 45. And a heat retaining member 73 made of glass wool material, urethane material or the like, which is integrally disposed on the inner surface. In addition, the code | symbol F3 in FIG. 4 shows the fastener which fixes the heat retention members 63 and 73 to the upper side surface covers 62 and 72. FIG.

  As shown in FIGS. 3 and 4, the side wall portion 58 has a front side portion of the upper side wall portion 61 and the lower side wall portion 71 that are opposed to each other at a front portion thereof fixed by a fastener F <b> 1 and a rear portion of the opposite side edge portion. By being engaged by the engagement structure 60 (see FIG. 3), it is integrated into a single panel shape.

  Specifically, as shown in FIG. 4, a tongue-like flange portion 64 extending downward is provided at the lower end front portion of the upper side wall portion 61, and the flange portion 64 is attached to the lower side wall portion 71. A mounting hole 64a is provided.

  On the other hand, as shown in FIG. 3, a mounting hole 71a for mounting to the upper side wall portion 61 is provided in a front portion of the upper portion of the lower side wall portion 71 and facing the mounting hole 64a in a side view of the vehicle body. ing.

  And the upper side wall part 61 and the lower side wall part 71 are attached and fixed by the fastener F1 etc. in each attachment hole 64a, 71a.

  As shown in FIG. 3, it is an opposing edge part of the lower end rear part of the upper side wall part 61 and the upper end rear part of the lower side wall part 71, and the rear part is engaged with each other in the vertical direction and the vehicle width direction. A structure 60 is provided.

  Specifically, as shown in FIGS. 3, 12 (a) and 12 (b), the engagement structure 60 is an engagement protrusion that protrudes downward to engage with the lower side wall 71 at the lower rear portion of the upper side wall 61. Part 65 and engaged parts (75a (see FIG. 12 (a)), 76 (see FIG. 12 (b)) provided at the upper rear portion of the lower side wall part 71 so as to be engageable with the engaging protrusion 65. ) And.

  As shown in FIGS. 12 (a) and 12 (b), the engaging protrusion 65 is formed in a hook shape in which the base 65a protrudes downward and the tip claw 65b provided at the tip protrudes rearward. ing. Furthermore, the engaging protrusion 65 is formed such that its base portion 65a protrudes outward in the vehicle width direction from the outer surface of the upper side wall portion 61 (see the figure).

  On the other hand, a concave groove portion 75 is formed in the engagement portion with the engagement protrusion 65 in the upper rear portion of the lower side wall portion 71 from the upper rear portion, and the upper edge of the lower side wall portion 71. In addition, a flange portion 76 is formed on the rear side of the groove portion 75 so as to protrude outwardly in the vehicle width direction.

  As described above, the upper side wall 61 and the lower side wall 71 are attached and fixed by the fasteners F1 and the like in the front part of these opposing edges, and the lower end of the upper side wall 61 is lower in the rear part. It will be in the state supported by the upper surface of the flange part 76 of the side wall part 71 (refer FIG.12 (b)). Furthermore, the engaging protrusion 65 is inserted into the groove 75 from above and protrudes from the inner side in the vehicle width direction of the lower side wall 71 to the outer side in the vehicle width through the groove 75.

At this time, the front end claw portion 65b of the engagement protrusion 65 is disposed on the outer side in the vehicle width direction with respect to the rear edge 75a of the groove portion 75 of the lower side wall portion 71, and the upper side wall portion 61 and the lower side wall portion 71 are engaged with each other. The front end claw portion 65b of the protrusion 65 and the flange portion 76 of the lower side wall portion 71 are engaged in the vertical direction, and the front end claw portion 65b of the engagement protrusion 65 and the rear edge 75a of the groove portion 75 are in the vehicle width direction. Engage with.
That is, the flange portion 76 of the lower side wall portion 71 and the rear edge 75a of the groove portion 75 are formed as the engaged portions 75a and 76 described above.

As shown in FIGS. 1, 2, 7, 8 (a), 9, 11, 12 (a) and 12 (b), the sub tank 30 is disposed at substantially the same height as the side wall 58. ing.
Specifically, the sub tank 30 is disposed in front of the vertical wall-shaped mount bracket body 21 of the engine mount bracket 20 (FIGS. 1, 2, 5B, and 8A). As shown in FIG. 8 (a), the side wall 58 extends forward from the front end of the vertical wall-shaped mount bracket body 21 of the engine mount bracket 20. Further, the side wall 58 is formed with a concave portion 58a that is concave inward in the vehicle width direction so as to avoid the sub tank 30 at a portion corresponding to the sub tank 30 in plan view (FIGS. 3, 8A, and 12). (See (a)).

  That is, the sub tank 30 is disposed so that at least the vehicle width inner wall portion 31 i is fitted into the recess 58 a provided in the side wall portion 58 from the vehicle width direction outer side. As a result, the vehicle width inner wall portion 31i in the sub tank 30 and the portion of the side wall portion 58 that faces the vehicle width inner wall portion 31i are shown in FIGS. 7, 8A, 9, 11, and 12A. As shown in FIG. 2, they are arranged adjacent to each other in the vehicle width direction.

  And the vehicle width inner wall part 31i and the side wall part 58 comprise the double wall in the mutually opposing part. Strictly speaking, in this example, the sub tank 30 is disposed adjacent to (adjacent to) the outer surface of the vehicle width inner wall portion 31i (the outer surface in the vehicle width direction) and the outer surface of the side wall portion 58 (the inner surface in the vehicle width direction) with a slight gap. However, they may be arranged in contact with each other.

Further, as shown in FIGS. 2, 7, 9, 11, and 12 (b), the sub tank 30 is disposed across the upper side wall 61 and the lower side wall 71.
More specifically, the vehicle width inner wall portion 31i of the sub tank 30 extends over the upper side wall portion 61 and the lower side wall portion 71 so as to overlap these 61 and 71 in the vertical direction and the vehicle width direction as much as possible. It is arranged. In this example, the sub tank main body 31 is formed so that the vertical length thereof is substantially the same as the vertical length of the side wall portion 58, and substantially the entire vertical direction thereof exceeds the side wall portion 58 in a side view of the vehicle. It is formed in a size that wraps (see FIG. 2).

As shown in FIGS. 1 to 4, 6, 7, 8 (a) and 9, particularly FIGS. 7, 8 (a), and 9, the side wall 58 is supported by the sub tank 30. .
That is, as described above, the sub tank 30 is supported by the shroud upper member 14 on the vehicle body side via the support bracket 40 (see FIGS. 5A and 5B and FIG. 10). By supporting the portion 58, the side wall portion 58 is supported by the shroud upper member 14 on the vehicle body side via the sub tank 30.

  The sub tank 30 that supports the side wall 58 is configured to support the upper side wall 61 and the lower side wall 71 (see FIGS. 2 to 4, 6, 8 (a), and 11).

  Specifically, as shown in FIG. 6, an upper flange portion 81 is provided above the flange portion 34 of the vehicle width inner wall portion 31 i of the sub tank 30, and similarly, an intermediate in the vertical direction of the front wall portion 31 f of the sub tank 30. An intermediate flange portion 82 that extends forward is provided at the position, and a lower flange portion 83 that extends downward is provided at the front portion of the downward extending protrusion 35.

  The upper flange portion 81, the intermediate flange portion 82, and the lower flange portion 83 are each provided with flange surfaces that are directed inward in the vehicle width direction (that is, opposite to the side wall portions 58). Attachment holes 81a, 82a, 83a for attachment to the portion 58 are provided.

On the other hand, as shown in FIGS. 3, 4, and 7, an attachment hole 66 a for attachment to the sub tank 30 is provided in a portion of the upper side wall portion 61 that faces the attachment hole 81 a of the upper flange portion 81.
As shown in FIGS. 3, 4, 8 (a), and 9, the mounting holes 82 a (see FIG. 8 (a)) of the intermediate flange portion 82 and the mounting holes of the lower flange portion 83 in the lower side wall portion 71. Attachment holes 74a and 74b for attachment to the sub-tank 30 are respectively provided at portions facing 83a (see FIG. 9).

  As shown in FIG. 7, the vehicle width inner wall portion 31i and the upper side wall portion 61 of the sub tank 30 are fixedly attached by fasteners F2 and the like in the mounting holes 81a and 66a. 81a, 66a) is fixedly supported by the sub tank 30.

  As shown in FIG. 2, FIG. 8 (a), and FIG. 9, the vehicle width inner wall portion 31i and the lower side wall portion 71 of the sub tank 30 are provided with mounting holes 82a and 74a (see FIG. 8 (a)) and mounting holes 83a, 74b (see FIG. 9), the lower side wall 71 is fixedly supported by the sub-tank 30 at these two mounting locations (82a, 74a and 83a, 74b).

  As shown in FIGS. 2 to 4, a seal member 84 seals between the front flange portion 52 f of the top cover 52 constituting the upper lid portion 51 and the upper member 13 </ b> U of the shroud panel 13.

  As shown in FIGS. 2, 3, 7, and 11, the flange portion 52 i on the vehicle right side of the upper surface cover 52 of the upper lid portion 51 is supported on the flange portion 61 a of the upper side surface cover 62. A sealing member 85 seals between the flange portion 52 i of the upper side cover 62 and the flange portion 61 a of the upper side cover 62. As shown in FIGS. 1 to 3, the engine mount bracket 20 is supported on the upper piece 21 e of the mount bracket body 21 of the engine mount bracket 20.

  As shown in FIGS. 1 to 3, a semi-cylindrical guide portion 90 extending from the front side portion of the skirt portion 52 e toward the vehicle width direction outward is provided on the right side portion of the upper lid portion 51 in the vehicle width direction. A space portion 91 through which a harness or a pipe member is inserted is formed in the lower portion of 90.

  Since a harness or a pipe member in which a heat insulating material is wound around the outer periphery is inserted into the space portion 91, there is no concern about heat escape from the space portion 91.

  As described above, the engine heat retaining structure of the embodiment includes the upper lid portion 51 and the side wall portion 58 having the heat retaining members 53, 63, 73 covering at least the upper side and the side of the engine, and the shroud 12 is disposed in front of the engine. An engine heat retaining structure is provided, and a radiator sub-tank 30 fixedly supported by a shroud door upper member 14 provided on an upper portion of a shroud panel 13 in the shroud 12 is provided at a front portion on the right side of the engine. The side wall 58 is disposed adjacent to the front side wall (front side wall), and the side wall 58 is supported by the sub tank 30 (see FIGS. 1, 7, 8A, and 9).

  According to the above configuration, the heat insulation effect of the engine can be enhanced by providing the side wall portion 58 as a heat insulation wall covering not only the upper side of the engine but also the front side on the right side, and the side wall portion 58 is interposed via the sub tank 30. Can be supported by the shroud upper member 14 (see FIGS. 1, 2, 5B, 6, and 10), and a dedicated support reinforcing member for supporting and reinforcing the side wall portion 58 is provided. Since it becomes unnecessary, the weight can be reduced (see FIG. 11).

  In one embodiment of the present invention, the side wall 58 is supported by the sub-tank 30 at a plurality of locations in the vertical direction (see FIGS. 2, 5B, 6, 10, and 11). The upper part of the sub tank 30 is fixedly supported by the shroud door upper member 14 at two locations inside and outside in the vehicle width direction (see FIGS. 2, 5B, 6, and 10), and the lower part of the sub tank 30 is the front side. The frame 1 is fixed and supported at one location (see FIG. 11).

  According to the above configuration, since the side wall portion 58 is supported at a plurality of locations in the vertical direction, the support rigidity of the side wall portion 58 by the sub tank 30 can be further improved.

  In one embodiment of the present invention, the sub tank 30 is disposed at substantially the same height as the side wall portion 58 (FIGS. 1, 2, 7, 8A to 12A). )reference).

  According to the above configuration, the heat insulation performance of the engine is further improved by the double wall effect of the side wall portion 58 and the sub tank 30 than when the side of the engine is covered only by the side wall portion 58.

  That is, the sub tank 30 can be used as a support reinforcing member for the side wall portion 58 or a heat retaining member for the engine in addition to the function as the original radiator sub tank 30.

  In one embodiment of the present invention, the side wall 58 is divided into upper and lower sides by an upper side wall 61 and a lower side wall 71, and the sub tank 30 includes the upper side wall 61 and the lower side wall. It is disposed across the section 71 (see FIGS. 1, 2, 7, 9, and 11).

  In this way, by forming the side wall portion 58 by dividing the upper side wall portion 61 and the lower side wall portion 71 into upper and lower sides, only a part of the side wall portion 58 can be attached and detached (that is, the side wall portion 58 is removed). Since the upper side wall 61 and the lower side wall 71 can be attached and detached separately without being attached and detached integrally, service and maintainability can be improved as compared with the case where the entire side wall 58 is integrally formed.

  Further, as described above, the sub tank 30 is disposed across the upper side wall portion 61 and the lower side wall portion 71, so that heat is generated from a portion between the upper side wall portion 61 and the lower side wall portion 71. Escape can be prevented by the sub tank 30.

  In one embodiment of the present invention, the sub tank 30 is configured to support each of the upper side wall portion 61 and the lower side wall portion 71 (FIGS. 2, 4, 7, and 8A). (See FIG. 9).

  According to the above configuration, the upper side wall portion 61 and the lower side wall portion 71 are supported by the sub tank 30, so that the upper side wall portion 61 and the lower side wall portion 71 can be separated even if the side wall portion 58 is divided. Both can be supported firmly.

The present invention is not limited to the configuration of the above-described embodiment, and can be formed in various embodiments.
For example, at least a part of the side wall portion 58 may be formed by the sub tank 30.
Specifically, as in the other embodiment shown in FIG. 8B, the side wall portion 58 </ b> A is formed by omitting a portion facing the vehicle width inner wall surface of the sub tank 30. And in the site | part corresponding to the area | region where the side wall part 58 was abbreviate | omitted in the vehicle width inner wall part 31i of the subtank 30, it is set as the structure which covers an engine directly by this part by providing a heat retention member not shown suitably. .

  In this structure, it is set as the structure which supports the outer peripheral side by the said sub tank 30 by the vehicle side view with respect to the vehicle width inner wall part 31i of the sub tank 30 in the side wall part 58A.

  For example, in the embodiment of FIG. 8B, the intermediate rear portion that extends rearward from the rear wall portion 55 as well as the intermediate front flange portion 82 f that extends the intermediate flange portion 82 described above from the front of the front wall portion 31. A flange portion 82r is provided.

  Then, the front portion 58Af of the side wall portion 58A from the sub tank main body 31 is supported via the intermediate front flange portion 82f, and the rear portion 58Ar of the side wall portion 58A from the sub tank main body 31 via the intermediate rear flange portion 82r. It can be set as the structure supported.

  According to the above configuration, the dedicated heat insulating wall can be reduced by the amount that the side wall 58 forming a part of the protective wall is replaced by the sub tank 30.

As still another embodiment, the entire side wall portion 58 may be formed by the entire vehicle width inner wall portion 31 i of the sub tank 30.
Although not shown in detail, the engine has a heat retaining wall that covers at least the upper side and the side of the engine, and has a shroud 12 disposed in front of the engine. A part of the side wall part 58 provided in the engine is constituted by an engine mount bracket 20 for mounting and supporting the engine, and a front part of the side wall part 58 from the engine mount bracket 20 is a shroud upper member provided at the upper part of the shroud 12. 14 and the sub-tank 30 fixedly supported by 14.

According to the above configuration, the front portion of the side wall portion 58 from the engine mount bracket 20 can be substituted by the vehicle width inner wall portion 31i of the sub tank 30. That is, the side wall portion 58 is originally installed on the side of the engine. Since the engine mount bracket 20 and the sub tank 30 can be substituted, the side wall 58 provided separately on the side of the engine can be omitted.

12 ... shroud 14 ... shroud upper member (shrouded upper)
20 ... Engine mount bracket 30 ... Sub tank 51 ... Upper lid (heat insulation member)
58 .. side wall (heat insulation member)
61 ... Upper side wall 71 ... Lower side wall

Claims (7)

An engine heat retaining structure including a heat retaining member that covers at least the upper side and the side of the engine, and a shroud disposed in front of the engine,
A sub-tank fixedly supported by a shroud upper provided in the upper part of the shroud is disposed adjacent to a side wall provided on the side of the engine among the heat retaining members,
An engine heat retaining structure in which the side wall is supported by the sub tank. The side wall is supported by the sub tank at a plurality of locations in the vertical direction,
2. The engine heat retaining structure according to claim 1, wherein an upper portion of the sub tank is fixedly supported by the shroud upper and a lower portion of the sub tank is fixedly supported by the front side frame. The engine heat retaining structure according to claim 1 or 2, wherein the sub tank is disposed at substantially the same height as the side wall portion. The side wall portion is formed by dividing the upper side wall portion and the lower side wall portion into upper and lower sides,
4. The engine heat insulation structure according to claim 1, wherein the sub tank is disposed across the upper side wall portion and the lower side wall portion. 5. 5. The engine heat retaining structure according to claim 4, wherein the sub tank supports each of an upper side wall and a lower side wall. The engine heat retaining structure according to any one of claims 1 to 5, wherein a part of the side wall is formed by the sub tank. An engine heat insulation structure including a heat insulation wall that covers at least the upper side and the side of the engine, and a shroud disposed in front of the engine,
A part of the side wall provided on the side of the engine among the heat insulation walls is composed of an engine mount bracket for mounting and supporting the engine,
A heat retaining structure for an engine comprising a sub-tank fixedly supported by a shroud upper that is provided on an upper portion of the shroud at a portion of the side wall portion that is forward of the engine mount bracket.

Images