KR100361281B1 - A mounting structure of engine for automobile - Google Patents

Abstract

The present invention relates to a mounting structure, and more particularly, to a vehicle engine mounting structure that can minimize the transmission of vibration from the engine installed in the engine room of the vehicle to the body, the vibration of the engine through the engine mounter The fender apron and side members are provided to provide a vehicle engine mounting structure that can be minimized to enter the interior of the vehicle to generate a booming sound.

In order to realize the above object, the present invention provides a mount member 52 installed on the side member 50 and the side member 50 installed on the fender apron 55, and connects the mounter 52 and the engine E. In a vehicle engine mounting structure including an engine bracket 53, a reinforcement plate 1 provided between the side member 50 and the fender apron 55 to withstand the left and right vibrations of the fender apron 55 And a box-shaped reinforcement beam 2 fixed to the upper surface of the fender apron 55 and a fender bracket 3 connecting the engine mounter 52 and the reinforcement beam 2 to each other. do.

Description

Engine Mounting Structure for Automotives {A MOUNTING STRUCTURE OF ENGINE FOR AUTOMOBILE}

The present invention relates to a mounting structure, and more particularly to a vehicle engine mounting structure that can minimize the transmission of vibration from the engine installed in the engine room of the vehicle to the body.

In general, an engine of an automobile obtains power by exploding gasoline and diesel, and the engine generates a multi-cylinder, that is, a plurality of cylinders in sequence, and installs a piston therein to generate sequential explosion force.

Of course, the explosion is in a certain order, for example, in the case of a four-cylinder engine in a certain order such as 1-4-2-3.

As described above, when the explosion is continuously performed, vibration is generated in the engine, and the engine mounter is installed to prevent the vibration from being transmitted to the body to lower the riding comfort.

The engine mounter is located inside the engine room as shown in FIGS. 4 and 5, and the bracket 51 fixed to the upper surface of the side member 50, and the mounter mounted on the upper surface of the bracket 51. 52, an engine bracket 53 for connecting the upper surface of the mounter 52 and the engine E, and a fender bracket 55 for connecting the mounter 52 and the fender apron 54. .

That is, in the state where the mounter 52 is installed between the side member 50 and the engine bracket 53, the fender bracket 54 improves the rigidity against the engine E horizontal vibration. It is a configuration.

However, if the plate-shaped fender bracket is installed between the engine mounter and the fender apron as described above to reduce the left and right vibrations, the above-mentioned fender brackets are thin plate-shaped. As the vibration transmitted from the fender bracket is transmitted to the fender apron in a chamber shape, the deformation amount of the fender apron is increased, which causes the side member's deformation and vibration to be transferred to the vehicle interior (dash panel, floor) and booming. ) There is a problem that the sound (in the engine rpm3000 band) is generated large.

In addition, since the side member is directly connected to the fender apron, the thin fender apron, which is thin, is easily deformed by vibration, etc., thereby vibrating the side member so that the amount of vibration transmitted to the room is not attenuated.

Accordingly, an object of the present invention is to solve the above problems, the engine mounting for a vehicle that can minimize the vibration of the engine through the engine mounter is introduced into the vehicle interior through the fender apron and side members to generate a booming sound In providing a structure.

In order to achieve the above object, the present invention provides a side member installed on a fender apron, a mounter installed on the side member, and an engine mounting structure for an automobile including an engine bracket connecting the mounter and the engine, the side member described above. And a reinforcement plate installed between the and the fender aprons to withstand the left and right vibrations of the fender apron, a box-shaped reinforcement beam fixed to the upper surface of the fender apron, and a fender bracket connecting the engine mount and the reinforcement beam. It features.

1 is a cross-sectional view showing an engine mounting structure for an automobile according to the present invention;

Figure 2 is a schematic diagram showing a vibration state according to the transmission of the force in the conventional mounting structure and the mounting structure of the present invention,

Figure 3 is a graph showing the vibration response characteristics in the side member according to the present invention,

4 is a perspective view showing an installation state of an engine mounter in a general engine room for a vehicle;

FIG. 5 is a sectional view showing an installation state of the engine mounter in FIG. 4; FIG.

＊ Explanation of symbols on main parts of drawing

1: reinforcement plate 2: reinforcement beam

3: fender bracket 4: blocking plate

5: Chamber E: Engine

50: side member 55: fender apron

1 is a schematic cross-sectional view showing the engine mounting structure for an automobile according to the present invention, the reinforcing plate 1 provided between the side member 50 and the fender apron 55 and the upper surface of the fender apron 55 described above. It consists of a box-shaped reinforcement beam 2 fixed to it, and the fender bracket 3 which connected the engine mounter 52 and the reinforcement beam 2 mentioned above.

In addition, a blocking plate 4 is installed between the side member 50 and the reinforcing plate 1 so that one end is fixed and the other end is fixed to the fender bracket 3, and the fender apron 55 and the fender bracket ( The chamber 5 is formed between 3).

That is, by installing the reinforcement plate 1 between the side member 50 and the fender apron 55, not only the vibration of the thin fender apron 55 can be reduced, but also the fender bracket 3 and By forming the chamber 5 with the blocking plate 4 between the fender apron 55, the vibration is attenuated to reduce the vibration transmitted to the vehicle interior by the side member 50.

Referring to the effects of the present invention as described above, when the left and right vibrations of the engine E are transmitted to the engine mounter 52 through the engine bracket 53, the side members 50 and the fender bracket 3 are transferred to the engine mounter 52. do.

The vibration transmitted to the side member 50 and the fender bracket 3 causes the fender bracket 54 and the side member 50 to vibrate in the related art, as shown in FIG. Since the chamber 5 is formed by 1) and the blocking plate 4 and the reinforcing beam 2, the vibration is greatly attenuated here so that only the side member 50 vibrates slightly.

That is, the reinforcement plate 1 or the like prevents the fender apron 55 from vibrating with the side member 50 and absorbs the vibration from the chamber 5, thereby vibrating the side member 50. To reduce the vibration, it is possible to reduce the vibration transmitted to the room (dash panel, floor) riding the side member 50.

In particular, the reinforcing beam (2) is installed in the portion connecting the fender bracket (3) and the engine mounter 53 to form a space by itself, not only to reduce the vibration but also to improve the rigidity of the fender apron (55) By playing a role, the fender apron 55 is prevented from vibrating.

The vibration damping effect is more clearly shown in the graph shown in Figure 3, the noise due to the vibration shown in the conventional structure is represented by a thin solid line, the noise according to the present invention is represented by a thick solid line.

That is, the noise appears to be reduced by about 5 dB in the 3000 ~ 4000rpm region where the booming sound is the greatest.

As described above, the present invention can minimize the booming sound generated in the 3000rpm region by installing the reinforcement plate, the reinforcement beam and the blocking plate to prevent the fender apron and the side member from vibrating by the vibration transmitted from the engine mounter. There is an advantage.

Claims (2)

In the engine mounting structure for automobiles including a side member installed on the fender apron, a mounter installed on the side member, and an engine bracket connecting the mounter and the engine, A reinforcement plate installed between the side member and the fender apron to withstand the left and right vibrations of the fender apron, a box-shaped reinforcement beam fixed to the upper surface of the fender apron, and the fender bracket connecting the engine mounter and the reinforcement beam. Automotive engine mounting structure characterized in that it comprises a. The method of claim 1, An engine mounting structure for automobiles, characterized in that one end is fixed between the side member and the reinforcement plate and the other end is fixed to the fender bracket to form a chamber between the fender apron and the fender bracket.