A car engine mounting structure

Abstract

This invention discloses an automotive engine mount structure, including a mount body, which comprises a connected mount rubber main spring and a mount support arm, and a mount mounting housing. The mount rubber main spring is disposed within the mount mounting housing. An opening is provided on the side of the vehicle's longitudinal beam, and the mount mounting housing is installed in a cavity within the opening. The end of the mount support arm is located outside the mount mounting housing and extends out from the opening. By concealing part of the mount structure, excess space is freed up to the maximum extent. This reduces the space occupied by the mount in the engine compartment without sacrificing mount performance, lowers the difficulty of arranging large hybrid and range-extended powertrains, and provides a solution for adapting large hybrid and range-extended powertrains to compact vehicles.

Description

Technical Field

[0001] This invention relates to the field of engine mounting technology, and in particular to an automotive engine mounting structure. Background Technology

[0002] With the development of the times and the progress of technology, new energy vehicles, especially hybrid and range-extended vehicles, have gradually become the mainstream of the industry due to their unique advantages (fast power response, no range anxiety, etc.). However, compared with traditional fuel vehicles, hybrid and range-extended vehicles have a larger lateral dimension of the entire powertrain because the transmission integrates a generator or drive motor, which to some extent increases the design difficulty of the suspension system.

[0003] Existing engine mount structures are mostly directly fixed above the longitudinal beams of the vehicle body, which is difficult to meet the mounting and fixing requirements of engines with large lateral dimensions. For example, Chinese patent CN101367330A describes a method for strengthening engine mount fixing points and its mount assembly. In this method, two mount points are fixedly installed on the longitudinal beam assembly, and one mount point is fixed to the wheel arch. The mount point is formed by welding the sheet metal body to the wheel arch sheet metal. Multiple weld points are arranged around the mount point and are evenly distributed in an elongated oval shape to form a closed weld point ring. The sheet metal body uses a semi-closed cavity-shaped reinforcing plate. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automotive engine mounting structure that reduces the space occupied by the mounting in the engine compartment and simplifies the layout of large-scale hybrid and range-extended powertrains.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] The automotive engine mounting structure includes a mounting body, which includes a connected mounting rubber main spring and a mounting bracket, and a mounting housing. The mounting rubber main spring is disposed inside the mounting housing. An opening is provided on the side of the longitudinal beam of the vehicle. The mounting housing is installed in a cavity within the opening. The end of the mounting bracket is located outside the mounting housing and extends out from the opening.

[0007] Further:

[0008] The suspension mounting housing is a housing structure with an opening on the side, and a cavity space is formed inside the housing structure in which the suspension rubber main spring is inserted and fixed.

[0009] The bottom of the suspended rubber main spring is a suspended vulcanized base. The suspended vulcanized base is attached to the bottom of the cavity structure of the shell and is fixedly connected to the shell by the main spring and the shell connecting fasteners.

[0010] The opening on the longitudinal beam is located on the inner side of the longitudinal beam.

[0011] The inner side of the suspension mounting housing is provided with a flange structure, and the inner side of the flange structure forms a mounting mating surface, which is fitted and fixedly connected to the inner side of the longitudinal beam.

[0012] The inner side of the longitudinal beam is provided with a fixed connection surface corresponding to the mounting mating surface, and a set of mounting holes is provided on the fixed connection surface along the Y direction.

[0013] The longitudinal beam is equipped with an internal reinforcing structure corresponding to the fixed installation position.

[0014] The internal reinforcing structure includes a front reinforcing plate and a rear reinforcing plate of the longitudinal beam. Both the front and rear reinforcing plates are welded to the cover plate of the longitudinal beam. Corresponding mounting holes are provided on the front and rear reinforcing plates.

[0015] The front reinforcing plate of the longitudinal beam is a front vertical plate. The upper end of the front vertical plate is welded to the top of the inner longitudinal beam, and the lower end of the front vertical plate is welded to the bottom of the inner longitudinal beam. The inner side of the front vertical plate is provided with a vertical surface that fits against the inner side of the fixed connection surface.

[0016] The longitudinal beam rear reinforcing plate includes an inner transverse reinforcing plate and an inner vertical reinforcing plate connected together. The inner transverse reinforcing plate is welded to the longitudinal beam cover plate and the interior of the longitudinal beam body. The inner side of the inner vertical reinforcing plate is fitted and connected to the inner side of the fixed connection surface.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The engine mount structure of this car is reasonably designed. By hiding part of the mount structure, it maximizes the release of excess space. Without sacrificing the mount performance, it can reduce the space occupied by the mount in the engine compartment, reduce the difficulty of arranging large-sized hybrid and range-extended powertrains, and provide a solution for compact models to adapt to large-sized hybrid and range-extended powertrains. Attached Figure Description

[0019] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0020] Figure 1 This is a schematic diagram of the suspension rubber main spring of the present invention.

[0021] Figure 2 This is a bottom view of the suspension rubber main spring of the present invention.

[0022] Figure 3 This is a schematic diagram of the suspension housing structure of the present invention. Figure 1 .

[0023] Figure 4 This is a schematic diagram of the suspension housing structure of the present invention. Figure 2 .

[0024] Figure 5 This is a schematic diagram of the suspension housing structure of the present invention. Figure 3 .

[0025] Figure 6 This is a schematic diagram of the longitudinal beam suspension installation structure of the present invention. Figure 1 .

[0026] Figure 7 This is a schematic diagram of the longitudinal beam suspension installation structure of the present invention. Figure 2 .

[0027] Figure 8 This is a schematic diagram of the present invention being suspended and installed on a longitudinal beam.

[0028] In the picture:

[0029] 1-1. Suspension bracket; 1-2. Suspension rubber main spring; 1-3. Suspension vulcanized base;

[0030] 2-1. Suspension mounting housing; 2-2. Fasteners connecting the main spring and the housing; 2-3. Mounting mating surfaces;

[0031] 3-1. Body longitudinal beam body; 3-2. Front reinforcing plate of longitudinal beam; 3-3. Mounting point I; 3-4. Rear reinforcing plate of longitudinal beam; 3-4-1. Inner transverse reinforcing plate; 3-4-2. Inner vertical reinforcing plate; 3-5. Mounting point II; 3-6. Mounting point III; 3-7. Longitudinal beam cover plate; 3-8. Mounting point IV. Detailed Implementation

[0032] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0033] like Figures 1 to 8 As shown, the automotive engine mount structure includes a mount body and a mount mounting housing 2-1. The mount body includes a connected mount rubber main spring 1-2 and a mount support arm 1-1. The mount support arm 1-1 supports and positions the powertrain. The mount rubber main spring is located inside the mount mounting housing 2-1, which is located inside the longitudinal beam of the vehicle body. The mount support arm extends out from the longitudinal beam.

[0034] Specifically, the longitudinal beam of the car has an opening on the side, the suspension mounting housing is installed in the cavity inside the opening, and the end of the suspension support arm is located outside the suspension mounting housing and extends out from the opening; the main structure of the suspension is hidden inside the longitudinal beam. By hiding part of the suspension structure, excess space is released to the maximum extent, which can provide a solution for adapting large-size hybrid and range-extended powertrains to compact models without sacrificing the performance of the suspension.

[0035] This patent aims to provide an engine mounting structure design scheme with a small nacelle, large powertrain, and limited layout space. It does not impose strict requirements on the mounting material, number of mounting points, and wall thickness, but the relevant structural forms are all within the scope of protection of this patent.

[0036] The suspension mounting housing 2-1 is a housing structure with a side opening, and a cavity space is formed inside the housing structure for inserting and fixing the suspension rubber main spring; the suspension mounting housing is a cast metal housing with a one-piece structure and high structural strength; the side opening is set on the vertical surface inside the suspension mounting housing, which facilitates the insertion and fixing of the suspension body.

[0037] The bottom of the suspension rubber main spring is the suspension vulcanization base 1-3, which is located below the suspension body. A suspension support arm extends from one side of the suspension body. The suspension body and the suspension support arm are an integral structure with high structural strength. The suspension vulcanization base is an inverted cone structure, which is larger at the top and smaller at the bottom, which is convenient for installation and operation. The suspension support arm is provided with a set of positioning connection holes for powertrain support and positioning.

[0038] The suspension vulcanizing base is attached to the bottom of the cavity structure of the shell and fixedly connected to the shell by the main spring and the shell connecting fastener 2-2; the main spring and the shell connecting fastener is a long bolt structure, and the bottom of the cavity structure of the shell has a through hole. The long bolt structure passes through the through hole at the bottom of the shell and the internal thread hole of the suspension vulcanizing base and the suspension body, which is easy to connect and the structure is stable and reliable.

[0039] The body longitudinal beam 3-1 is a hollow longitudinal beam structure. The opening on the longitudinal beam is located on the inner side of the longitudinal beam. The mounting housing can be inserted into the longitudinal beam for fixation through the inner opening of the longitudinal beam. The hidden engine mounting structure design reduces the space occupied by the mounting in the engine compartment and reduces the difficulty of arranging large-size hybrid and range-extended powertrains, providing a solution for compact models to adapt to large-size hybrid and range-extended powertrains.

[0040] The main suspension structure is concealed inside the longitudinal beam. This concealed structure design can simultaneously improve the modal and dynamic stiffness of the passive side of the suspension, thereby improving the NVH performance of the entire vehicle.

[0041] The inner side of the suspension mounting housing is provided with a flange structure. The size of the flange structure is larger than the size of the opening on the inner side of the longitudinal beam. Only the main body of the suspension mounting housing can be placed inside the longitudinal beam. The flange structure of the suspension mounting housing is located outside the longitudinal beam. The inner side of the flange structure forms a mounting mating surface 2-3. The mounting mating surface is fitted and fixedly connected to the inner side of the longitudinal beam. The connection is simple, stable and reliable.

[0042] The inner side of the longitudinal beam has a fixed connection surface corresponding to the installation mating surface. A set of mounting holes is provided along the Y direction on the fixed connection surface. A set of bolts is tightened in the Y direction to form a set of suspension mounting points. The set of suspension mounting points are suspension mounting point I3-3, suspension mounting point II3-5, suspension mounting point III3-6 and suspension mounting point IV3-8, which realizes the fixation of the suspension mounting shell and makes the installation and connection operation simple.

[0043] The longitudinal beam has an internal reinforcement structure corresponding to the fixed installation position; the internal reinforcement structure is reasonably designed and improves the structural strength of the longitudinal beam structure and the suspension installation structure without affecting the internal mounting.

[0044] Preferably, the internal reinforcement structure includes a front longitudinal beam reinforcement plate 3-2 and a rear longitudinal beam reinforcement plate 3-4. Both the front and rear longitudinal beam reinforcement plates are sheet metal stamping parts, which are fixed to the longitudinal beams of the vehicle body by welding. Since the longitudinal beam structure consists of longitudinal beam cover plates, the welding operation is simple.

[0045] Both the front and rear reinforcing plates of the longitudinal beam are welded to the longitudinal beam cover plate 3-7. Corresponding mounting holes are provided on the front and rear reinforcing plates. There are four suspension mounting points, two at the front and two at the rear, with the front and rear mounting points aligned vertically.

[0046] The front reinforcing plate of the longitudinal beam is a front vertical plate. The upper end of the front vertical plate is welded to the top of the inner longitudinal beam, and the lower end of the front vertical plate is welded to the bottom of the inner longitudinal beam. The inner side of the front vertical plate has a vertical surface that fits against the inner side of the fixing connection surface. Furthermore, the inner side of the front vertical plate has a connecting flange. The connecting flange has a planar structure, and one fixing hole is located on the connecting flange surface of the front reinforcing plate of the longitudinal beam. This fixing hole is aligned with the corresponding mounting hole. The connecting flange fits snugly against the inner wall of the longitudinal beam, resulting in a compact, stable, and reliable structure.

[0047] The longitudinal beam rear reinforcing plate includes an inner transverse reinforcing plate 3-4-1 and an inner vertical reinforcing plate 3-4-2 connected together. The inner transverse reinforcing plate is welded to the longitudinal beam cover plate and the interior of the longitudinal beam body. The inner side of the inner vertical reinforcing plate is fitted to the inner side of the fixed connection surface, and the inner side of the inner vertical reinforcing plate is provided with fixing holes that are aligned with the corresponding fixing installation holes, which improves the strength of the connection structure.

[0048] Furthermore, the lower part of the inner transverse reinforcing plate of the longitudinal beam rear reinforcing plate is provided with a folded lap joint structure, and the interior of the vehicle body longitudinal beam is provided with a boss. The folded lap joint structure of the inner transverse reinforcing plate is welded to the boss and connected. The folded lap joint structure is provided with positioning holes, and the welding positioning is accurate. The lower end of the inner vertical reinforcing plate is welded to the inner transverse reinforcing plate, resulting in a compact structure with high structural strength.

[0049] Compared to traditional suspension structures, the advantages of this invention are as follows: 1. The rubber main spring and the support arm are vulcanized as a single unit, which reduces the space occupied compared to the traditional interference fit design; 2. The suspension housing and rubber main spring are hidden in the longitudinal beam, which frees up all the space occupied by the suspension housing in the traditional design (sitting on the longitudinal beam) for the powertrain or other systems, reducing the difficulty of layout; 3. The hidden suspension housing and the longitudinal beam mounting points are relatively evenly distributed, with relatively high dynamic stiffness and modal characteristics, which can improve NVH vibration isolation performance.

[0050] This invention features a suspension housing with a Y-direction mounting hole, an inverted rubber main spring, a support arm integrally vulcanized with the rubber main spring, and bolts connecting the housing and the main spring. Simultaneously, this invention requires corresponding longitudinal beams to cooperate with the suspension housing, opening from the side, and designing a cavity structure. By concealing part of the suspension structure, excess space is maximized, reducing the space occupied by the suspension in the engine compartment without sacrificing suspension performance. This simplifies the layout of large-sized hybrid and range-extended powertrains, providing a solution for adapting large-sized hybrid and range-extended powertrains to compact vehicles.

[0051] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0052] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A car engine mount structure, comprising a mount body, the mount body including a connected mount rubber main spring and a mount support arm, characterized in that: It also includes a suspension mounting housing, a suspension rubber main spring is set inside the suspension mounting housing, an opening is provided on the side of the longitudinal beam of the vehicle, the suspension mounting housing is installed in the cavity inside the opening, and the end of the suspension support arm is located outside the suspension mounting housing and extends out from the opening. The suspension mounting housing is a side-opening housing structure, with a cavity space inside the housing structure for inserting and fixing the suspension rubber main spring; the opening on the longitudinal beam is located on the inner side of the longitudinal beam; the inner side of the suspension mounting housing is provided with a flange structure, and the inner side of the flange structure forms a mounting mating surface, which is fitted and fixedly connected to the inner side of the longitudinal beam; the inner side of the longitudinal beam is provided with a fixing connection surface corresponding to the mounting mating surface, and a set of mounting holes is provided on the fixing connection surface along the Y direction; the interior of the longitudinal beam is provided with an internal reinforcing structure corresponding to the fixed mounting position; the internal reinforcing structure includes a front reinforcing plate and a rear reinforcing plate of the longitudinal beam, both of which are welded to the cover plate of the longitudinal beam, and corresponding fixing holes are provided on the front reinforcing plate and the rear reinforcing plate of the longitudinal beam corresponding to the mounting holes.

2. The automotive engine mount structure as described in claim 1, characterized in that: The bottom of the suspended rubber main spring is a suspended vulcanized base. The suspended vulcanized base is attached to the bottom of the cavity structure of the shell and is fixedly connected to the shell by the main spring and the shell connecting fasteners.

3. The automotive engine mount structure as described in claim 1, characterized in that: The front reinforcing plate of the longitudinal beam is a front vertical plate. The upper end of the front vertical plate is welded to the top of the inner longitudinal beam, and the lower end of the front vertical plate is welded to the bottom of the inner longitudinal beam. The inner side of the front vertical plate is provided with a vertical surface that fits against the inner side of the fixed connection surface.

4. The automotive engine mount structure as described in claim 1, characterized in that: The longitudinal beam rear reinforcing plate includes an inner transverse reinforcing plate and an inner vertical reinforcing plate connected together. The inner transverse reinforcing plate is welded to the longitudinal beam cover plate and the interior of the longitudinal beam body. The inner side of the inner vertical reinforcing plate is fitted and connected to the inner side of the fixed connection surface.

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