JPH0627268U - Engine mount structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the space efficiency on the front end side of the engine and to reduce the engine weight and cost. In an engine in which an engine 3 is mounted horizontally, and a central portion of a front end of the engine 3 is elastically supported on a front side frame 2 side facing the engine 3 via an engine mount 4, the front end of the engine 3 is provided. The idler 12 is attached to the substantially central portion of the portion via the idler attachment bracket 8, the idler attachment bracket 8 is extended to the front side frame 2 side, and the engine mount 4 is connected to the extension portion 83. With this configuration, the number of fixing points on the engine side can be reduced by also using the idler mounting bracket as the engine mount mounting bracket, and the space efficiency can be reduced by effectively using the limited space on the front end side of the engine. Can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a horizontal engine mounting structure having an idler on the front end surface of the engine.

[0002]

[Prior art]

 Generally, in a horizontal engine in which the engine is mounted on the vehicle body in the vehicle width direction, a substantially central portion of a front end portion of the engine is elastically supported by a front side frame facing the front end portion. A so-called three-point support mount structure is employed in which the left and right sides of the rear end of the engine are elastically supported by mount members arranged in the vehicle width direction. In this case, on the engine front end side, it is customary to fix the engine mount bracket directly to the engine front end surface (for example, see Japanese Utility Model Laid-Open No. 61-146426).

On the other hand, as disclosed in the above-mentioned publicly known example, a timing belt stretched around a camshaft pulley is arranged on the front end face side of the engine. In this case, the timing belt is wound around each pulley. An idler is arranged on the front end face of the engine from the viewpoint of ensuring an appropriate angle and preventing tooth jumping of the timing belt. When mounting the idler, it is common to provide a dedicated bracket on the engine side.

[0004]

[Problems to be solved by the device]

 However, in the case where the idler and the engine mount are arranged at the front end of the engine in this way, the engine mount has a characteristic of engine support, and particularly in the case of a V-type engine, the engine mount is located only between the banks because of the engine configuration. Due to lack of space, etc., it is usually placed in the center of the engine width direction. Further, the idler is usually arranged in the center portion of the engine width direction in order to set the same winding angle of the timing belt in the left and right banks, especially in the V-type engine.

Therefore, when the engine mount and the idler are arranged at the same position on the engine as described above, it is necessary to vertically shift the mounting positions of both of them, but the arrangement space on the front end side of the engine is limited. In consideration of the fact that the layout is not easy, and because the idler and the engine mount are separately provided, an increase in the number of parts hinders the weight reduction or cost reduction of the engine. Problems will also occur.

Therefore, the present invention has been made as a proposal of an engine mount structure capable of improving the space efficiency on the front end side of the engine and reducing the weight and cost of the engine.

[0007]

[Means for Solving the Problems]

 As a concrete means for solving such a problem in the invention of the present application, in the invention of claim 1, the engine is mounted between a pair of left and right front side frames arranged with both sides of the front part of the vehicle body oriented in the vehicle length direction. In an engine which is mounted in the width direction and elastically supports the center part of the front end of the engine on the front side frame side facing the front part through an engine mount, the center part of the front end part of the engine is substantially centered. The idler for adjusting the timing belt with the idler mounting bracket extended to the front side frame side from the front end of the engine, and the idler mounting bracket extended to the front side frame side. The engine mount is connected to the extended portion.

According to a second aspect of the invention, in the engine mount structure according to the first aspect, the extending portion of the above-mentioned idler mounting bracket is located above the idler.

[0009]

[Action]

 With each of the inventions of the present application, the following actions can be obtained with such a configuration.

According to the first aspect of the present invention, since a part of the idler mounting bracket is extended to the front side frame side and the engine mount is attached to this extended portion, a part of the idler mounting bracket is attached. It can also be used as an engine mount mounting bracket, and the number of mounting points can be reduced compared to when these are individually fixed to the engine side.

According to the second aspect of the invention, in addition to the above-described action, the extended portion of the idler mounting bracket is located above the idler, so that the idler can be provided on the front end surface of the engine. Member, for example, the water pump pulley, can be placed as close as possible, and the height position of the idler can be set lower to increase the space above it. It

[0012]

[Effect of device]

 Therefore, according to the engine mount structure of each invention of the present application, the following effects can be obtained.

(A) According to the engine mount structure of the first aspect, the number of fixing points on the engine side can be reduced by also using the idler mounting bracket as the engine mount mounting bracket. Compared to the case where a dedicated engine mount mounting bracket is provided separately from the mounting bracket, the limited space on the front end side of the engine can be used effectively and the space efficiency is improved, and the number of parts is reduced. This has the effect of facilitating weight reduction and cost reduction of the engine.

(B) According to the engine mount structure of the second aspect, in addition to the effect described in (a) above, the extension portion of the idler mounting bracket is arranged above the idler, thereby increasing the height of the idler. Since the position is set low so that the space above it can be expanded, the effect is that space efficiency at the front end of the engine can be further increased.

[0015]

【Example】

 Hereinafter, the engine mount structure of the present invention will be specifically described based on an embodiment. FIG. 1 shows a front portion of a vehicle body 1 of an automobile having an engine mount structure according to the embodiment of the present invention. In the figure, reference numeral 2 is a front side frame which is arranged on both sides of the vehicle body 1 in the vehicle length direction. The V-shaped engine 3 is disposed between the pair of left and right front side frames 2 and 2 and its crank. It is installed horizontally with the axial direction facing the vehicle width direction. In this engine 3, the front end portion 3a and the interbank portion 3C located between the pair of left and right banks 3A and 3B are supported by the first engine mount 4 arranged on the front side frame 2 side. On the other hand, it has a three-point engine mount structure in which the left and right sides of the rear end portion 3b are supported on the vehicle body 1 side by the second engine mount 5 and the third engine mount 6, respectively.

On the other hand, as shown in FIGS. 3 and 4, on the front end surface 3d side of the engine 3, the camshaft pulleys 11 and the like arranged on the cylinder heads 32 and 32 of the banks 3A and 3B are wound around. The timing belt 10 is disposed, and an idler 12 is disposed in the inter-bank portion 3C of the cylinder block 31 via an idler mounting bracket 8 described later. A water pump pulley 13 is arranged below the idler 12.

When the idler 12 and the first engine mount 4 are respectively arranged on the front end face 3d side of the engine 3 as described above, in particular, in the V-type engine according to the present embodiment, the idler 12 has a different form. Since the space for arranging 12 and the like is limited to the inter-bank portion 3C, the space efficiency becomes a problem. Therefore, in this embodiment, by applying the invention of the present application, the idler mounting bracket 8 for mounting the idler 12 is also used as a part of the first engine mount 4, thereby improving the space efficiency in the interbank portion 3C, and It is designed to reduce the weight of the engine. Hereinafter, this will be described in detail with reference to FIGS.

The idler mounting bracket 8 has a base portion 81 which is fastened and fixed by bolts 61 to an upper surface 31a corresponding to the interbank portion 3C of the engine 3, and an upper portion which is continuous with a front end portion of the base portion 81. And an idler mounting portion 82 on which the idler 12 is rotatably mounted, and an extending portion 83 which continuously extends from the upper end of the idler mounting portion 82 to the front side. .

On the other hand, the first engine mount 4 includes a mount body 41 having a mount rubber 41b having a proper elasticity inside a case 41a, and a frame side bracket 42 connected to the case 41a. The engine side bracket 43 is connected to the mount rubber 41b and extends outward in the radial direction. In the first engine mount 4, the frame side bracket 42 is fastened and fixed to the front side frame 2 with bolts 63, and the tip end of the engine side bracket 43 is extended to the extension part of the idler mounting bracket 8. It is connected to the engine 3 side via the idler mounting bracket 8 by abutting against 83 and fastening and fixing it with bolts 62.

In this way, the idler mounting bracket 8 that supports the idler 12 is provided with the extension portion 83, and the engine side bracket 43 of the first engine mount 4 is fixed to the extension portion 83. In this case, since it suffices to attach the engine 3 to one place, for example, as compared with the conventional case where the idler 12 and the first engine mount 4 are separately connected to the engine 3 side, As a result, the space for the above-mentioned inter-bank portion 3C can be increased by reducing the number of mounting points, and the space efficiency can be improved.

Further, by utilizing the extended portion 83 of the idler mounting bracket 8 as a part of the mounting bracket of the first engine mount 4, the parts on the side of the first engine mount 4 can be reduced in size and weight and the number of points can be reduced. This will help reduce the weight of the engine and reduce its cost.

Further, when the extending portion 83 of the idler mounting bracket 8 is arranged not above the idler 12 but above the idler 12, as in this embodiment, the extending portion 83 and Since it is not necessary to consider mutual interference with the water pump pulley 13 arranged below the idler 12, for example, as compared with the case where the extension 83 is arranged below the idler 12, By setting the interval between the idler 12 and the water pump pulley 13 arranged below the idler 12 as small as possible, the height dimension of the idler 12 portion can be further reduced. This means that the space for arranging various devices above the idler mounting bracket 8 can be further expanded, and as a result, as described above, the extending portion 83 of the idler mounting bracket 8 can be provided in the first portion. The use effect as a part of the mounting bracket of the engine mount 4 further promotes the space efficiency improvement effect.

Further, when the belt cover 9 is disposed between the idler 12 and the extended portion 83 of the idler mounting bracket 8 in the idler 12 portion as in this embodiment, Since the idler mounting bracket 8 does not penetrate the front surface portion 9a (see FIG. 3) of the belt cover 9, for example, as compared to the case where the bracket penetrates the flat surface portion of the belt cover as in the above-mentioned known example. As a result, the structure of the belt cover 9 can be simplified.

[Brief description of drawings]

FIG. 1 is a front plan view of an automobile having an engine mount structure according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a portion II of FIG.

3 is a vertical cross-sectional view taken along the line III-III in FIG.

4 is a view taken along the line IV-IV in FIG.

[Explanation of symbols]

1 is a vehicle body, 2 is a front side frame, 3 is an engine, 4 is a first engine mount, 5 is a second engine mount, 6 is a third engine mount, 8 is an idler mounting bracket, 9 is a belt cover, and 10 is a timing belt. , 11 is a camshaft pulley, 12 is an idler,
13 is a water pump pulley.

Claims (2)

[Scope of utility model registration request] 1. An engine is mounted in a vehicle width direction between a pair of left and right front side frames arranged so that both sides of a front portion of a vehicle body are oriented in a vehicle length direction, and a central portion of a front end of the engine is mounted on the engine. In an engine in which the front side frames facing each other are elastically supported via an engine mount, an idler for adjusting a timing belt is provided at a substantially central portion of a front end portion of the engine above the front end of the engine via an idler mounting bracket. While mounting in the state of extending to the front side frame side, extend the idler mounting bracket to the front side frame side,
An engine mount structure characterized in that the engine mount is connected to the extended portion. 2. The engine mount structure according to claim 1, wherein the extended portion of the idler mounting bracket is located above the idler.