CN112248786A - Resonance suppression mechanism for engine suspension support - Google Patents
Resonance suppression mechanism for engine suspension support Download PDFInfo
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- CN112248786A CN112248786A CN202011137763.2A CN202011137763A CN112248786A CN 112248786 A CN112248786 A CN 112248786A CN 202011137763 A CN202011137763 A CN 202011137763A CN 112248786 A CN112248786 A CN 112248786A
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- engine
- oil
- suppression mechanism
- resonance suppression
- engine mount
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Vibration Prevention Devices (AREA)
Abstract
An engine suspension support resonance suppression mechanism relates to the field of engine supports. The engine suspension support resonance suppression mechanism comprises two engine suspension supports respectively connected with two sides of an engine, and a frame longitudinal beam and a vibration suppression assembly which are connected with the engine suspension supports in a one-to-one correspondence mode, wherein each vibration suppression assembly comprises at least one telescopic oil cylinder, and two ends of each telescopic oil cylinder are respectively hinged with the engine and the corresponding engine suspension support. The application provides an engine suspension support resonance suppression mechanism can utilize hydraulic cylinder to connect and improve suspension support's joint rigidity to through the amplitude of hydraulic cylinder restraint engine suspension support, thereby improve engine suspension support's vibration isolation performance.
Description
Technical Field
The application relates to the field of engine supports, in particular to a resonance suppression mechanism of an engine suspension support.
Background
The cross-country vehicle usually uses the commercial vehicle engine of big discharge capacity in order to satisfy climbing and cross-country requirement, but the engine vibration is too big when big discharge capacity is operated, and its NVH performance again must reach passenger car's standard, this vibration isolation performance to engine mounting has proposed higher requirement.
As shown in fig. 1, an engine mount 110 of a conventional automobile is generally used to fix an engine 100 to a frame rail 120, wherein the engine mount 110 generally includes an engine-side mount 111 connected to the engine 100, a frame-side mount 112 connected to the frame rail 120, and a mount pad 113 connecting the engine-side mount 111 and the frame-side mount 112. In order to reasonably avoid frequency, the rigidity of the engine active end suspension support is improved by a general method, the first-order mode of the engine active end suspension support of a common passenger car is more than 800Hz, but the actual test result analysis shows that the suspension vibration isolation performance of a large-displacement engine used by the off-road vehicle is improved without any effect. Further analysis shows that although the first-order mode of the suspension bracket is improved in the test, the first-order mode is only the free mode of the part, and after the suspension bracket is arranged on an engine, the actual first-order mode of the suspension bracket is not improved because the suspension bracket is higher in weight (the mass of a single bracket exceeds 10kg) in pursuit of high rigidity.
Therefore, a device capable of improving vibration isolation performance of the engine suspension bracket and improving connection rigidity of the suspension bracket is needed.
Disclosure of Invention
An object of the application is to provide an engine mount support resonance suppression mechanism, it can utilize hydraulic cylinder to connect and improve the connection rigidity of mount support to restrain the amplitude of engine mount support through hydraulic cylinder, thereby improve the vibration isolation performance of engine mount support.
The embodiment of the application is realized as follows:
the embodiment of the application provides an engine mounting support resonance restraines mechanism, it includes two engine mounting supports of being connected with the engine both sides respectively and the solebar of being connected with engine mounting support one-to-one and presses down the subassembly that shakes, every presses down the subassembly that shakes and all includes at least one telescopic cylinder, and telescopic cylinder's both ends are articulated with engine and corresponding engine mounting support respectively.
In some optional embodiments, each vibration suppression assembly comprises an oil pump, an oil storage tank, a diverter valve and a plurality of telescopic oil cylinders arranged at intervals along the circumferential direction of the corresponding engine suspension bracket, wherein the oil pump is communicated with the diverter valve, the oil storage tank is communicated with the diverter valve, and the diverter valve is communicated with each telescopic oil cylinder respectively.
In some alternative embodiments, the oil pump, the oil reservoir and the flow divider valve are secured to the respective frame rails.
In some alternative embodiments, the oil pump is in communication with the oil reservoir.
In some alternative embodiments, the axis of the telescopic cylinder is arranged at an angle of 30-75 degrees to the side surface of the engine.
In some alternative embodiments, the axis of the telescopic cylinder is arranged at an angle of 45-50 degrees to the side surface of the engine.
In some optional embodiments, the engine further comprises a controller, and the controller is used for receiving the engine speed signal and driving the oil pump of each vibration suppression component to open and close.
In some optional embodiments, the system further comprises two acceleration sensors electrically connected with the controller, wherein the acceleration sensors are respectively used for detecting the vibration conditions of the two engine suspension brackets; the controller is used for receiving acceleration signals detected by the two acceleration sensors and driving the oil pump of each vibration suppression component to open and close.
The beneficial effect of this application is: the engine suspension support resonance suppression mechanism that this embodiment provided includes two engine suspension supports of being connected with the engine both sides respectively, and the solebar and the subassembly that suppresses that shakes of being connected with engine suspension support one-to-one, every subassembly that suppresses shakes all includes at least one telescopic cylinder, and telescopic cylinder's both ends are articulated with engine and corresponding engine suspension support respectively. The engine suspension support resonance suppression mechanism provided by the embodiment can utilize the hydraulic oil cylinder for connection and improve the connection rigidity of the suspension support, and restrain the amplitude of the engine suspension support through the hydraulic oil cylinder, so that the vibration isolation performance of the engine suspension support is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a conventional engine mount bracket connected to an engine;
fig. 2 is a schematic structural diagram illustrating a connection between an engine suspension bracket resonance suppression mechanism provided in embodiment 1 of the present application and an engine;
fig. 3 is a schematic structural diagram illustrating a connection between an engine mount bracket resonance suppression mechanism and an engine according to embodiment 2 of the present application.
In the figure: 100. an engine; 110. an engine mount bracket; 111. an engine side suspension bracket; 112. a frame side suspension bracket; 113. suspending a cushion; 120. a frame rail; 130. a telescopic oil cylinder; 140. an oil pump; 150. an oil storage tank; 160. a flow divider valve; 170. a controller; 180. an acceleration sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The features and performance of the engine mount resonance suppression mechanism of the present application are described in further detail below with reference to embodiments.
Example 1
As shown in fig. 2, the embodiment of the present application provides an engine mount bracket resonance suppression mechanism, which includes two engine mount brackets 110 respectively connected to two sides of an engine 100, and a frame rail 120 and a vibration suppression component connected to the engine mount brackets 110 in a one-to-one correspondence; each engine mount bracket 110 includes an engine mount bracket 111 connected to engine 100, a frame mount bracket 112 connected to corresponding frame rail 120, and a mount pad 113 connecting engine mount bracket 111 and frame mount bracket 112.
Each vibration suppressing assembly comprises four telescopic oil cylinders 130 and an oil pump 140, the four telescopic oil cylinders 130 are respectively arranged at four positions, namely, the upper position, the lower position, the left position and the right position, of the engine side suspension bracket 111 in the corresponding engine suspension bracket 110, the cylinder bodies of the four telescopic oil cylinders 130 are respectively hinged with the engine 100, the cylinder rods of the four telescopic oil cylinders 130 are hinged with the engine side suspension bracket 111 in the corresponding engine suspension bracket 110, the oil pump 140, the oil storage tank 150 and the flow dividing valve 160 are fixed on the corresponding frame longitudinal beams 120, the oil pump 140 is communicated with the corresponding flow dividing valve 160 through oil pipes, the oil storage tank 150 is communicated with the corresponding flow dividing valve 160 through oil pipes, the oil pump 140 is communicated with the corresponding oil storage tank 150 through oil pipes, the flow dividing valve 160 is respectively communicated with rodless cavities of the corresponding four telescopic oil cylinders 130 through oil pipes, and the axes of the telescopic oil cylinders 130 are arranged at an angle of 45 degrees. A controller 170 is further fixed on one frame rail 120, the controller 170 is electrically connected with the oil pumps 140 of the two vibration suppression assemblies respectively, and the controller 170 is used for receiving an engine speed signal and driving the oil pumps 140 of the two vibration suppression assemblies to open and close.
The engine mount bracket resonance suppression mechanism provided by the embodiment can effectively improve the strength of the engine mount bracket 110 by arranging the vibration suppression components in one-to-one correspondence with the engine mount brackets 110 connected with two sides of the engine 100, and restrain the resonance generated by driving the engine mount bracket 110 when the engine runs, thereby achieving the purpose of improving the vibration isolation performance of the engine mount bracket 110, wherein the suppression components comprise four telescopic oil cylinders 130 arranged along the circumferential direction of the engine side mount bracket 111 in the engine mount bracket 110, the cylinder bodies and the cylinder rods of the telescopic oil cylinders 130 are respectively hinged with the engine 100 and the engine side mount bracket 111, an oil pump 140, an oil storage tank 150 and a diverter valve 160 are fixedly arranged on a frame longitudinal beam 120 correspondingly connected with the engine mount bracket 110, the hydraulic oil in the oil storage tank 150 can be introduced into rodless cavities of the four telescopic oil cylinders 130 through the diverter valve 160 by the oil pump 140, therefore, oil cylinder rods of the four telescopic oil cylinders 130 are driven to extend out to apply pressure to the engine side suspension bracket 111 of the engine side suspension bracket 110, so that the engine 100 is inhibited from driving the engine side suspension bracket 111 to vibrate when running, meanwhile, the four telescopic oil cylinders 130 are respectively positioned at the upper, lower, left and right positions corresponding to the engine side suspension bracket 111, when the four telescopic oil cylinders 130 extend out of the oil cylinder rods simultaneously, the invention can stably limit the position of the engine side suspension bracket 111, effectively avoid the vibration of the engine side suspension bracket 111 along with the engine 100, reduce the resonance amplitude of the engine side suspension bracket 110, and achieve the aim of inhibiting resonance.
The oil pump 140, the oil storage tank 150 and the flow dividing valve 160 are fixed on the corresponding frame rails 120, so that the vibration of the engine 100 during operation can be reduced, and the service lives of the oil pump 140, the oil storage tank 150 and the flow dividing valve 160 can be prolonged; the oil pump 140 is communicated with the corresponding shunt valve 160 through an oil pipe, the oil storage tank 150 is communicated with the corresponding shunt valve 160 through an oil pipe, the oil pump 140 is communicated with the corresponding oil storage tank 150 through an oil pipe, and sufficient hydraulic oil can be ensured to be injected into each telescopic oil cylinder 130 by the oil pump 140 through the shunt valve 160; the axis of the telescopic cylinder 130 is arranged at an angle of 45 degrees with the side surface of the engine 100, so that two ends of the telescopic cylinder 130 can be stably pressed against the engine 100 and the engine side suspension bracket 111 of the engine suspension bracket 110. The controller 170 fixed to the frame rail 120 can receive an engine speed signal input from the outside and drive the oil pumps 140 of the two vibration suppression assemblies to open and close, when the engine speed exceeds a set target speed, the controller 170 controls the two oil pumps 140 to open and input hydraulic oil into the eight telescopic cylinders 130 respectively, so that vibration of the two engine mount brackets 110 is suppressed, and when the engine speed is lower than the set target value, the controller 170 controls the two oil pumps 140 to close.
Example 2
As shown in fig. 3, the engine mount resonance suppression mechanism provided in this embodiment has substantially the same structure as the engine mount resonance suppression mechanism provided in embodiment 1, except that in this embodiment, each engine mount 111 is provided with an acceleration sensor 180 electrically connected to the controller 170, and the acceleration sensor 180 is used to detect the vibration of the corresponding engine mount 111; the controller 170 is used for receiving acceleration signals detected by the two acceleration sensors 180 and driving the oil pumps 140 of the two vibration damping assemblies to open and close.
The engine mount bracket resonance suppression mechanism provided by the embodiment detects the vibration condition of the corresponding engine mount bracket 111 through the acceleration sensors 180 arranged on the two engine mount brackets 111, and sends signals to the controller 170 to control the oil pumps 140 of the two vibration suppression components to open and close, after the signals output by the acceleration sensors 180 exceed the set value, the controller 170 controls the two oil pumps 140 to open and input hydraulic oil into the eight telescopic oil cylinders 130 respectively, so as to suppress the vibration of the two engine mount brackets 111, and when the signals output by the acceleration sensors 180 are lower than the set value, the controller 170 controls the two oil pumps 140 to close.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (8)
1. The engine suspension support resonance suppression mechanism is characterized by further comprising vibration suppression assemblies in one-to-one correspondence with the engine suspension supports, each vibration suppression assembly comprises at least one telescopic oil cylinder, and two ends of each telescopic oil cylinder are hinged to the engine and the corresponding engine suspension supports respectively.
2. The engine mount bracket resonance suppression mechanism according to claim 1, wherein each of said vibration suppression assemblies comprises an oil pump, an oil storage tank, a flow divider valve, and a plurality of telescopic cylinders arranged at intervals along a circumference corresponding to said engine mount bracket, said oil pump being in communication with said flow divider valve, said oil storage tank being in communication with said flow divider valve, said flow divider valve being in communication with each of said telescopic cylinders, respectively.
3. The engine mount bracket resonance suppression mechanism according to claim 2, wherein said oil pump, said oil reservoir, and said flow divider valve are fixed to said corresponding frame rails.
4. The engine mount bracket resonance suppression mechanism according to claim 2, characterized in that the oil pump and the oil tank communicate.
5. The engine mount bracket resonance suppression mechanism of claim 1, wherein the axis of the telescopic cylinder is arranged at an angle of 30-75 degrees with respect to the engine side surface.
6. The engine mount bracket resonance suppression mechanism of claim 5, wherein the axis of the telescopic cylinder is arranged at an angle of 45-50 degrees with respect to the side surface of the engine.
7. The engine mount bracket resonance suppression mechanism according to claim 2, further comprising a controller for receiving an engine speed signal and driving the oil pump of each of the vibration suppression assemblies to open and close.
8. The engine mount bracket resonance suppression mechanism according to claim 7, further comprising two acceleration sensors electrically connected to said controller, said acceleration sensors being respectively configured to detect vibration conditions of two of said engine mount brackets; the controller is used for receiving acceleration signals detected by the two acceleration sensors and driving the oil pump of each vibration suppression component to be opened and closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011137763.2A CN112248786A (en) | 2020-10-22 | 2020-10-22 | Resonance suppression mechanism for engine suspension support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011137763.2A CN112248786A (en) | 2020-10-22 | 2020-10-22 | Resonance suppression mechanism for engine suspension support |
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| Publication Number | Publication Date |
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| CN112248786A true CN112248786A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011137763.2A Pending CN112248786A (en) | 2020-10-22 | 2020-10-22 | Resonance suppression mechanism for engine suspension support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113792454A (en) * | 2021-08-26 | 2021-12-14 | 东风汽车集团股份有限公司 | Method and device for determining setting position of pressure relief valve, electronic equipment and storage medium |
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| US20190070945A1 (en) * | 2017-09-01 | 2019-03-07 | Kurashiki Kako Co., Ltd. | Vibration isolation structure |
| CN110056596A (en) * | 2019-04-22 | 2019-07-26 | 佛山科学技术学院 | A kind of damping draw-bar |
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| US5291966A (en) * | 1991-02-15 | 1994-03-08 | Tokai Rubber Industries, Ltd. | Automobile power plant apparatus |
| CN201217384Y (en) * | 2008-05-30 | 2009-04-08 | 上海通用汽车有限公司 | Suspending system for vehicle power assembly |
| CN102472357A (en) * | 2009-07-08 | 2012-05-23 | 本田技研工业株式会社 | Active anti-vibration supporting device and anti-vibration control method for same |
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| CN113792454A (en) * | 2021-08-26 | 2021-12-14 | 东风汽车集团股份有限公司 | Method and device for determining setting position of pressure relief valve, electronic equipment and storage medium |
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Application publication date: 20210122 |