A powertrain mounting system for a vehicle and its control method

Abstract

This invention belongs to the field of vehicle engineering technology, specifically relating to a powertrain mounting system and its control method. The powertrain mounting system includes a vision sensing unit, a judgment unit, a control unit, and multiple adjustable-stiffness mounting mechanisms. Each mounting mechanism is connected between the vehicle's powertrain and chassis to attenuate vibration transmission between the powertrain and chassis. The vision sensing unit collects road surface image information in front of the vehicle and sends the collected image information to the judgment unit. The judgment unit judges the road conditions in front of the vehicle based on the received road surface image information and sends smooth road condition information or bumpy road condition information to the control unit based on the judgment result. The control unit adjusts the stiffness of each mounting mechanism based on the received smooth road condition information or bumpy road condition information.

Description

Technical Field

[0001] This invention belongs to the field of vehicle engineering technology, specifically relating to a powertrain mounting system for a vehicle and its control method. Background Art

[0002] The powertrain mounting system refers to the components that connect the powertrain (engine, starter motor, etc.) to the vehicle frame. The powertrain is the main excitation source of a car, and as the main system for isolating this excitation, the performance of the powertrain mounting system directly affects the NVH level of the entire vehicle. NVH level refers to the level of noise, vibration, and harshness, which is an important indicator for evaluating the comfort and quality of a car.

[0003] To ensure NVH performance, the powertrain of existing vehicles is usually softly connected to the body through a powertrain mounting system. The stiffness of the powertrain mounting system should not be too high. However, this means that when a vehicle using the existing powertrain mounting system is driving on a bumpy road, the impact transmitted from the body to the powertrain is difficult for the existing powertrain mounting system to suppress the amplitude of the powertrain. This can easily cause the powertrain to vibrate vertically, which is then transmitted back to the body, causing the entire vehicle to vibrate. This amplifies the impact and generates residual vibrations, seriously affecting the comfort of the vehicle when driving on bumpy roads. Summary of the Invention

[0004] To address the shortcomings of the prior art, this invention provides a powertrain mounting system and its control method for vehicles. This addresses the problem that when vehicles using existing powertrain mounting systems travel on bumpy roads, the impact transmitted from the vehicle body to the powertrain is difficult to suppress. This results in the powertrain vibrating vertically, which is then transmitted back to the vehicle body, causing overall vehicle vibration, amplifying the impact, and generating residual vibrations, severely impacting the comfort of the vehicle when traveling on bumpy roads.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a powertrain mounting system for a vehicle, comprising a visual perception unit, a judgment unit, a control unit, and multiple mounting mechanisms with adjustable stiffness.

[0006] Each of the aforementioned suspension mechanisms is connected between the vehicle's powertrain and frame to attenuate vibration transmission between the powertrain and the frame;

[0007] The visual perception unit is used to collect road image information in front of the vehicle and send the collected road image information to the judgment unit;

[0008] The judgment unit is used to judge the road conditions ahead of the vehicle based on the received road image information, and send smooth road condition information or bumpy road condition information to the control unit according to the judgment result.

[0009] The control unit is used to adjust the stiffness of each of the suspension mechanisms according to the received information on smooth road conditions or bumpy road conditions.

[0010] The judgment unit determines the road conditions ahead of the vehicle based on the received road image information, and the control unit adjusts the stiffness of each suspension mechanism based on the received information about smooth or bumpy road conditions. This allows the powertrain suspension system of the vehicle provided by this invention to adjust the stiffness of each suspension mechanism according to different road conditions (bumpy or smooth) ahead of the vehicle. When the vehicle is traveling on a smooth road, the stiffness of each suspension mechanism is adjusted to a lower level to ensure the vehicle's NVH performance; when the vehicle is traveling on a bumpy road, the stiffness of each suspension mechanism is increased to... This system suppresses the amplitude of powertrain vibrations, preventing vertical vibrations that are transmitted back to the vehicle body, causing overall vehicle vibration, amplifying the impact, and generating residual vibrations. It improves vehicle comfort on bumpy roads and solves the problem that existing powertrain mounting systems struggle to suppress powertrain amplitude vibrations when driving on bumpy roads. This leads to vertical vibrations in the powertrain that are transmitted from the vehicle body to the powertrain, amplifying the impact, generating residual vibrations, and severely impacting vehicle comfort on bumpy roads.

[0011] Furthermore, each of the aforementioned suspension mechanisms is symmetrically arranged on the left and right sides of the powertrain.

[0012] Furthermore, the number of suspension mechanisms is four, with two suspension mechanisms on the same side spaced apart along the front-rear direction of the vehicle.

[0013] Furthermore, the suspension mechanism includes a housing, an airbag, a rubber base, a connecting rod, and a vibrating block;

[0014] The housing is fixedly connected to the vehicle frame, and the housing is open on the side facing the powertrain;

[0015] The lower side of the rubber base is integrally formed with the lower side of the inner cavity of the outer shell through a vulcanization process, and the upper side of the rubber base is integrally formed with the lower side of the vibration block through a vulcanization process.

[0016] The airbag is fixedly installed on the upper side of the inner cavity of the housing, and the airbag is used to abut against the upper side of the vibrating block; the connecting rod is arranged along the left and right direction of the vehicle, and the connecting rod is fixedly connected between the powertrain and the vibrating block;

[0017] The control unit includes a controller, an inflation / deflation mechanism, and multiple air tubes; each of the outer shells is connected to a corresponding air tube, one end of each air tube is inserted into the inner cavity of the corresponding outer shell and connected to the air bladder inside the outer shell, and the other end is connected to the inflation / deflation mechanism.

[0018] The controller is used to control the inflation / deflation mechanism to adjust the air pressure in each airbag according to the received smooth road condition information or bumpy road condition information, so as to adjust the stiffness of each suspension mechanism.

[0019] Furthermore, the suspension mechanism also includes a first limiting rubber block, which is integrally formed with the upper side of the inner cavity of the outer shell through a vulcanization process.

[0020] The airbag has an installation port on its upper side. The airbag is covered by the first limiting rubber through the installation port. The outer edge of the installation port is integrally formed with the upper side of the inner cavity of the outer shell through a vulcanization process to form a gas chamber between the inner side of the airbag and the first limiting rubber.

[0021] The end of each trachea connected to the corresponding outer shell passes through the upper side of the outer shell into the gas chamber;

[0022] The first limiting rubber is used to restrict the upward movement of the vibrating block.

[0023] By setting the first limiting block, the upward movement of the vibrating block can be limited, providing a limiting protection function.

[0024] Furthermore, the suspension mechanism also includes a second limiting rubber block; the second limiting rubber block is integrally formed with the front side of the inner cavity of the outer shell through a vulcanization process;

[0025] The second limiting rubber is disposed on the front side of the vibrating block, and the second limiting block is used to restrict the forward movement of the vibrating block.

[0026] By setting the second limiting block, the forward movement of the vibrating block can be limited, providing a limiting protection function.

[0027] Furthermore, the suspension mechanism also includes a third limiting rubber block; the third limiting rubber block is integrally formed with the rear side of the inner cavity of the outer shell through a vulcanization process;

[0028] The third limiting rubber is disposed on the rear side of the vibrating block, and the third limiting block is used to restrict the rearward movement of the vibrating block.

[0029] By setting the third limiting block, the forward movement of the vibrating block can be limited, providing a limiting protection function.

[0030] Furthermore, the rubber base is shaped like a frustum, smaller at the top and larger at the bottom.

[0031] By setting the rubber base in a frustum shape (smaller at the top and larger at the bottom), the support stability of the rubber base for the powertrain and the vibration block can be effectively improved.

[0032] Based on the powertrain mounting system for a vehicle provided by this invention, this invention also provides a control method for the powertrain mounting system for a vehicle, the control method comprising:

[0033] The visual perception unit collects road surface image information in front of the vehicle and sends the collected road surface image information to the judgment unit;

[0034] The judgment unit judges the road conditions ahead of the vehicle based on the received road image information, and sends smooth road condition information or bumpy road condition information to the control unit according to the judgment result.

[0035] The control unit adjusts the stiffness of the suspension mechanisms connected between the powertrain and the vehicle frame based on the received information about smooth or bumpy road conditions.

[0036] Furthermore, the method by which the control unit adjusts the stiffness of each suspension mechanism connected between the powertrain and the vehicle frame based on the received smooth road condition information or bumpy road condition information includes:

[0037] The controller of the control unit controls the inflation / deflation mechanism of the control unit to adjust the air pressure in the airbags of each suspension mechanism according to the received smooth road condition information or bumpy road condition information, so as to adjust the stiffness of each suspension mechanism.

[0038] Furthermore, if the controller receives the smooth road condition information, the controller controls the inflation / deflation mechanism to adjust the air pressure in each of the airbags to a first preset air pressure value; if the controller receives the bumpy road condition information, the controller controls the inflation / deflation mechanism to adjust the air pressure in each of the airbags to a second preset air pressure value.

[0039] The second preset air pressure value is greater than the first preset air pressure value.

[0040] The first preset air pressure value and the second preset air pressure value can be obtained by calibration testing to obtain the mapping relationship between the air pressure in the airbag of the suspension mechanism and the stiffness of the suspension mechanism. The first preset air pressure value can be obtained according to the mapping relationship and the first target stiffness of the suspension mechanism under smooth road conditions; the second preset air pressure value can be obtained according to the mapping relationship and the second target stiffness of the suspension mechanism under bumpy road conditions. Attached Figure Description

[0041] To more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the assembly structure of the vehicle's powertrain mounting system, frame, and powertrain in the embodiment.

[0043] Figure 2 This is a schematic diagram of the suspension mechanism in the embodiment;

[0044] Among them, 1—suspension mechanism, 2—vehicle frame, and 3—powertrain;

[0045] 1.1—Outer shell, 1.2—Airbag, 1.3—Rubber base, 1.4—Connecting rod, 1.5—Vibration block, 1.6—First limiting rubber, 1.7—Gas chamber, 1.8—Second limiting rubber, 1.9—Third limiting rubber. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] Example 1:

[0048] like Figures 1 to 2 As shown, Embodiment 1 provides a powertrain mounting system for a vehicle, including a vision perception unit, a judgment unit, a control unit, and multiple adjustable stiffness mounting mechanisms 1;

[0049] Each suspension mechanism 1 is connected between the vehicle's powertrain 3 and the frame 2 to attenuate the vibration transmission between the powertrain 3 and the frame 2;

[0050] The visual perception unit is used to collect road surface image information in front of the vehicle and send the collected road surface image information to the judgment unit;

[0051] The judgment unit is used to judge the road conditions ahead of the vehicle based on the received road image information, and send smooth road condition information or bumpy road condition information to the control unit according to the judgment result.

[0052] The control unit is used to adjust the stiffness of each suspension mechanism 1 according to the received information on smooth or bumpy road conditions.

[0053] The judgment unit determines the road conditions ahead of the vehicle based on received road image information, and the control unit adjusts the stiffness of each suspension mechanism 1 based on received information about smooth or bumpy road conditions. This allows the powertrain suspension system of the vehicle provided by this invention to adjust the stiffness of each suspension mechanism 1 according to different road conditions (bumpy or smooth) ahead of the vehicle. When the vehicle is traveling on a smooth road, the stiffness of each suspension mechanism 1 is adjusted to a lower level to ensure the vehicle's NVH performance. When the vehicle is traveling on a bumpy road, the stiffness of each suspension mechanism 1 is increased to suppress the amplitude of the powertrain 3. This design avoids vertical vibration of the powertrain 3, which is then transmitted back to the vehicle body, causing overall vehicle vibration, amplifying the impact, and generating residual vibrations. This improves the comfort of the vehicle when driving on bumpy roads and solves the problem that when vehicles using existing powertrain mounting systems are driving on bumpy roads, the impact transmitted from the vehicle body to the powertrain 3 is difficult for the existing powertrain mounting system to suppress the amplitude of the powertrain 3, which easily causes vertical vibration of the powertrain 3, which is then transmitted back to the vehicle body, causing overall vehicle vibration, amplifying the impact, generating residual vibrations, and seriously affecting the comfort of the vehicle when driving on bumpy roads.

[0054] like Figure 1 As shown, in this embodiment 1, each suspension mechanism 1 is symmetrically arranged on the left and right sides of the powertrain 3.

[0055] Preferably, in this embodiment 1, the number of suspension mechanisms 1 is four, with two suspension mechanisms 1 on the same side spaced apart along the front-rear direction of the vehicle.

[0056] In one embodiment, such as Figure 1 and Figure 2 As shown, the suspension mechanism 1 includes a housing 1.1, an airbag 1.2, a rubber base 1.3, a connecting rod 1.4, and a vibrating block 1.5;

[0057] The outer shell 1.1 is fixedly connected to the frame 2, and the outer shell 1.1 is open on the side facing the powertrain 3;

[0058] The lower side of the rubber base 1.3 is integrally formed with the lower side of the inner cavity of the outer shell 1.1 through a vulcanization process, and the upper side of the rubber base 1.3 is integrally formed with the lower side of the vibration block 1.5 through a vulcanization process.

[0059] Airbag 1.2 is fixedly installed on the upper side of the inner cavity of housing 1.1, and airbag 1.2 is used to abut against the upper side of vibrating block 1.5; connecting rod 1.4 is arranged along the left and right direction of the vehicle, and connecting rod 1.4 is fixedly connected between powertrain 3 and vibrating block 1.5;

[0060] The control unit includes a controller, an inflation / deflation mechanism, and multiple air tubes; each housing 1.1 is connected to a corresponding air tube, one end of each air tube is inserted into the inner cavity of the corresponding housing 1.1 and connected to the airbag 1.2 inside the housing 1.1, and the other end is connected to the inflation / deflation mechanism;

[0061] The controller is used to control the inflation and deflation mechanism to adjust the air pressure in each airbag 1.2 according to the received information on smooth or bumpy road conditions, so as to adjust the stiffness of each suspension mechanism 1.

[0062] Preferably, in this embodiment 1, as Figure 2 As shown, the suspension mechanism 1 also includes a first limiting rubber block 1.6, which is integrally formed with the upper side of the inner cavity of the outer shell 1.1 through a vulcanization process;

[0063] An installation port is provided on the upper side of the airbag 1.2. The airbag 1.2 is covered by the first limiting rubber 1.6 through the installation port. The outer edge of the installation port is integrally formed with the upper side of the inner cavity of the outer shell 1.1 through a vulcanization process to form a gas chamber 1.7 between the inner side of the airbag 1.2 and the first limiting rubber 1.6.

[0064] One end of the trachea connected to the corresponding outer shell 1.1 passes through the upper side of the outer shell 1.1 into the gas chamber 1.7;

[0065] The first limiting rubber 1.6 is used to restrict the upward movement of the vibrating block 1.5.

[0066] By setting the first limit block, the upward movement of the vibrating block 1.5 can be limited, providing a limit protection function.

[0067] Preferably, in this embodiment 1, as Figure 2 As shown, the suspension mechanism 1 also includes a second limiting rubber block 1.8; the second limiting rubber block 1.8 is integrally formed with the front side of the inner cavity of the outer shell 1.1 through a vulcanization process; the second limiting rubber block 1.8 is disposed on the front side of the vibrating block 1.5, and the second limiting block is used to restrict the forward movement of the vibrating block 1.5.

[0068] By setting a second limiting block, the forward movement of the vibrating block 1.5 can be limited, providing a limiting protection function.

[0069] Preferably, in this embodiment 1, as Figure 2As shown, the suspension mechanism 1 also includes a third limiting rubber block 1.9; the third limiting rubber block 1.9 is integrally formed with the rear side of the inner cavity of the outer shell 1.1 through a vulcanization process; the third limiting rubber block 1.9 is disposed on the rear side of the vibration block 1.5, and the third limiting block is used to restrict the rearward movement of the vibration block 1.5.

[0070] By setting a third limit block, the forward movement of the vibrating block 1.5 can be limited, providing a limit protection function.

[0071] Preferably, in this embodiment 1, as Figure 2 As shown, the rubber base 1.3 is shaped like a frustum, smaller at the top and larger at the bottom.

[0072] By setting the rubber base 1.3 to a frustum shape with a smaller top and a larger bottom, the support stability of the rubber base 1.3 for the powertrain 3 and the vibrating block 1.5 can be effectively improved.

[0073] Example 2:

[0074] Based on the powertrain mounting system of the vehicle provided in Embodiment 1, Embodiment 2 provides a control method for the powertrain mounting system of the vehicle, the control method including:

[0075] The visual perception unit collects road surface image information in front of the vehicle and sends the collected road surface image information to the judgment unit;

[0076] The judgment unit judges the road conditions ahead of the vehicle based on the received road image information, and sends smooth road condition information or bumpy road condition information to the control unit according to the judgment result.

[0077] The control unit adjusts the stiffness of the suspension mechanisms 1 that are connected between the powertrain 3 and the frame 2 of the vehicle based on the received information on smooth or bumpy road conditions.

[0078] Specifically, in this embodiment 2, the method by which the control unit adjusts the stiffness of each suspension mechanism 1 connected between the powertrain 3 and the frame 2 of the vehicle based on the received information on smooth or bumpy road conditions includes:

[0079] The controller of the control unit controls the inflation and deflation mechanism of the control unit to adjust the air pressure in the airbags 1.2 of each suspension mechanism 1 according to the received information on smooth road conditions or bumpy road conditions, so as to adjust the stiffness of each suspension mechanism 1.

[0080] Specifically, in this embodiment 2, if the controller receives information about smooth road conditions, the controller controls the inflation and deflation mechanism to adjust the air pressure in each airbag 1.2 to the first preset air pressure value; if the controller receives information about bumpy road conditions, the controller controls the inflation and deflation mechanism to adjust the air pressure in each airbag 1.2 to the second preset air pressure value.

[0081] The second preset air pressure value is greater than the first preset air pressure value.

[0082] Specifically, in this embodiment 2, the first preset air pressure value and the second preset air pressure value can be obtained by calibration testing to obtain the mapping relationship between the air pressure inside the airbag 1.2 of the suspension mechanism 1 and the stiffness of the suspension mechanism 1. The first preset air pressure value can be obtained according to the mapping relationship and the first target stiffness of the suspension mechanism 1 under smooth road conditions; the second preset air pressure value can be obtained according to the mapping relationship and the second target stiffness of the suspension mechanism 1 under bumpy road conditions.

[0083] The powertrain mounting system and control method for vehicles provided by this invention have at least the following technical effects or advantages:

[0084] 1. The judgment unit determines the road conditions ahead of the vehicle based on the received road image information, and the control unit adjusts the stiffness of each suspension mechanism 1 based on the received information on smooth or bumpy road conditions. This enables the powertrain suspension system of the vehicle provided by the present invention to adjust the stiffness of each suspension mechanism 1 according to different road conditions (bumpy or smooth) ahead of the vehicle. When the vehicle is traveling on a smooth road, the stiffness of each suspension mechanism 1 is adjusted to a lower value to ensure the vehicle's NVH performance. When the vehicle is traveling on a bumpy road, the stiffness of each suspension mechanism 1 is increased to suppress the vibration of the powertrain 3. This design avoids vertical vibration of the powertrain 3, which is then transmitted back to the vehicle body, causing overall vehicle vibration, amplifying the impact, and generating residual vibrations. This improves the comfort of the vehicle when driving on bumpy roads and solves the problem that existing powertrain mounting systems are unable to suppress the amplitude of powertrain 3's vibration after the impact is transmitted from the vehicle body to the powertrain 3 on bumpy roads. This easily causes the powertrain 3 to vibrate vertically and then transmits back to the vehicle body, causing overall vehicle vibration, amplifying the impact, generating residual vibrations, and seriously affecting the comfort of the vehicle when driving on bumpy roads.

[0085] 2. By setting the first limit block, the upward movement of the vibrating block 1.5 can be limited, providing a limit protection function.

[0086] 3. By setting the second limit block, the forward movement of the vibrating block 1.5 can be limited, providing a limit protection function.

[0087] 4. By setting the third limit block, the forward movement of the vibrating block 1.5 can be limited, providing a limit protection function.

[0088] 5. By setting the rubber base 1.3 into a frustum shape with a smaller top and a larger bottom, the support stability of the rubber base 1.3 for the power assembly 3 and the vibration block 1.5 can be effectively improved.

[0089] The above are merely specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. All technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of protection of the present invention.

Claims

1. A powertrain mounting system for a vehicle, characterized in that, It includes a visual perception unit, a judgment unit, a control unit, and multiple suspension mechanisms with adjustable stiffness; Each of the aforementioned suspension mechanisms is connected between the vehicle's powertrain and frame to attenuate vibration transmission between the powertrain and the frame; The visual perception unit is used to collect road image information in front of the vehicle and send the collected road image information to the judgment unit; The judgment unit is used to judge the road conditions ahead of the vehicle based on the received road image information, and send smooth road condition information or bumpy road condition information to the control unit according to the judgment result. The control unit is used to adjust the stiffness of each of the suspension mechanisms according to the received smooth road condition information or bumpy road condition information. Each of the aforementioned suspension mechanisms is symmetrically arranged on the left and right sides of the powertrain; The suspension mechanism includes a housing, an airbag, a rubber base, a connecting rod, and a vibrating block; The housing is fixedly connected to the vehicle frame, and the housing is open on the side facing the powertrain; The lower side of the rubber base is integrally formed with the lower side of the inner cavity of the outer shell through a vulcanization process, and the upper side of the rubber base is integrally formed with the lower side of the vibration block through a vulcanization process. The airbag is fixedly installed on the upper side of the inner cavity of the housing, and the airbag is used to abut against the upper side of the vibrating block; the connecting rod is arranged along the left and right direction of the vehicle, and the connecting rod is fixedly connected between the powertrain and the vibrating block; The control unit includes a controller, an inflation / deflation mechanism, and multiple air tubes; each of the outer shells is connected to a corresponding air tube, one end of each air tube is inserted into the inner cavity of the corresponding outer shell and connected to the air bladder inside the outer shell, and the other end is connected to the inflation / deflation mechanism. The controller is used to control the inflation / deflation mechanism to adjust the air pressure in each airbag according to the received smooth road condition information or bumpy road condition information, so as to adjust the stiffness of each suspension mechanism.

2. The powertrain mounting system for a vehicle according to claim 1, characterized in that: The number of suspension mechanisms is four, with two suspension mechanisms on the same side spaced apart along the front-rear direction of the vehicle.

3. The powertrain mounting system for a vehicle according to claim 1, characterized in that: The suspension mechanism also includes a first limiting rubber block, which is integrally formed with the upper side of the inner cavity of the outer shell through a vulcanization process. The airbag has an installation port on its upper side, and the airbag is covered by the first limiting rubber through the installation port. The outer edge of the mounting port is integrally formed with the upper side of the inner cavity of the outer shell through a vulcanization process to form a gas chamber between the inner side of the airbag and the first limiting rubber. The end of each trachea connected to the corresponding outer shell passes through the upper side of the outer shell into the gas chamber; The first limiting rubber is used to restrict the upward movement of the vibrating block.

4. The powertrain mounting system for a vehicle according to claim 1, characterized in that: The suspension mechanism also includes a second limiting rubber block; the second limiting rubber block is integrally formed with the front side of the inner cavity of the outer shell through a vulcanization process; the second limiting rubber block is disposed on the front side of the vibrating block, and the second limiting block is used to restrict the forward movement of the vibrating block.

5. The powertrain mounting system for a vehicle according to claim 1, characterized in that: The suspension mechanism further includes a third limiting rubber block; the third limiting rubber block is integrally formed with the rear side of the inner cavity of the outer shell through a vulcanization process; the third limiting rubber block is disposed on the rear side of the vibrating block, and the third limiting block is used to restrict the rearward movement of the vibrating block.

6. The powertrain mounting system for a vehicle according to claim 1, characterized in that: The rubber base is shaped like a frustum, smaller at the top and larger at the bottom.

7. A control method for a vehicle's powertrain mounting system, characterized in that, The control method comprises: (1) the powertrain mounting system of the vehicle according to any one of claims 1-6; The visual perception unit collects road surface image information in front of the vehicle and sends the collected road surface image information to the judgment unit; The judgment unit judges the road conditions ahead of the vehicle based on the received road image information, and sends smooth road condition information or bumpy road condition information to the control unit according to the judgment result. The control unit adjusts the stiffness of the suspension mechanisms connected between the powertrain and the vehicle frame based on the received information about smooth or bumpy road conditions.

8. The control method for the powertrain mounting system of a vehicle according to claim 7, characterized in that: The method by which the control unit adjusts the stiffness of each suspension mechanism connected between the powertrain and the vehicle frame based on the received smooth road condition information or bumpy road condition information includes: The controller of the control unit controls the inflation / deflation mechanism of the control unit to adjust the air pressure in the airbags of each suspension mechanism according to the received smooth road condition information or bumpy road condition information, so as to adjust the stiffness of each suspension mechanism.

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