Automotive shock absorber preheating methods, preheating systems and automobiles

Abstract

This invention discloses a preheating method, preheating system, and automobile for an automotive shock absorber, relating to the field of automotive shock absorber technology. The preheating method includes acquiring the real-time temperature of the shock absorber using a temperature sensor; determining whether the shock absorber has entered a preheating state based on the real-time temperature; and if the real-time temperature of the shock absorber is lower than a preset temperature, then the shock absorber enters the preheating state. The sensing device includes the temperature sensor. The technical solution of this invention first acquires the real-time temperature of the shock absorber using a temperature sensor, then determines whether the shock absorber has entered a preheating state based on the real-time temperature, and finally, if the real-time temperature of the shock absorber is lower than a preset temperature, the shock absorber enters the preheating state. In this way, the automotive shock absorber quickly enters the preheating state to heat itself, thereby avoiding the risk of damage in low-temperature environments.

Description

Technical Field

[0001] This invention relates to the field of automotive shock absorber technology, and in particular to an automotive shock absorber preheating method, preheating system, and automotive. Background Technology

[0002] Currently, most mid-to-high-end cars are equipped with air springs and CDC (Continuous Damping Control) shock absorbers to achieve a better driving experience and meet the demands for handling and comfort. In winter, especially in northern regions, due to low ambient temperatures and prolonged parking, the viscosity of the fluid inside the shock absorbers decreases, increasing the damping value and affecting ride comfort. Furthermore, if a vehicle encounters a significant road impact, the high damping value may prevent the shock absorbers from absorbing vibrations properly, leading to damage. CDC shock absorbers are expensive to repair and replace, increasing the financial burden of vehicle ownership. Therefore, in low ambient temperatures, it is necessary to preheat the shock absorbers as soon as possible to improve comfort and reduce the risk of damage.

[0003] The existing technology involves covering the outer end of the shock absorber with a heating resistance wire, which heats the shock absorber. However, this has the following problems: heating the resistance wire itself requires a lot of electrical energy, resulting in high energy consumption, which affects the vehicle's range in today's electric vehicles; at the same time, considering the heat transfer effect, the heating efficiency is not high when the resistance wire is covering the outer end of the shock absorber. Summary of the Invention

[0004] The main objective of this invention is to provide a method, system, and vehicle for preheating automotive shock absorbers. The aim is to provide a method, system, and vehicle for preheating automotive shock absorbers in low-temperature environments to quickly raise the temperature of the shock absorbers to the normal operating temperature range, thereby improving comfort and reducing the risk of damage.

[0005] To achieve the above objectives, the present invention proposes a preheating method for an automotive shock absorber, wherein the automotive includes a shock absorber and a sensing device; the preheating method for the automotive shock absorber includes the following steps:

[0006] The real-time temperature of the vibration damper is obtained through a temperature sensor;

[0007] Determine whether the vibration damper has entered the preheating state based on the real-time temperature of the vibration damper;

[0008] If the real-time temperature of the vibration damper is lower than the preset temperature, the vibration damper enters the preheating state.

[0009] The sensing device includes the temperature sensor.

[0010] In one embodiment, after the step of the vibration damper entering a preheating state if the real-time temperature of the vibration damper is lower than a preset temperature, the following step is further included:

[0011] The sensor measures the real-time driving information of the vehicle.

[0012] Based on the real-time driving information, determine whether the shock absorber will enter a self-heating state;

[0013] The preheating state includes a self-heating state.

[0014] In one embodiment, the sensing device includes a height sensor; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the method further includes the following steps:

[0015] The vehicle's pitch and roll angles are obtained from the height sensor.

[0016] If either the pitch angle or the roll angle is greater than a preset value, the shock absorber will enter a self-heating state.

[0017] The real-time driving information includes the pitch angle and the roll angle.

[0018] In one embodiment, the sensing device further includes an acceleration sensor; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the device further includes the following steps:

[0019] Acquire the vertical acceleration signal of the vehicle as measured by the acceleration sensor;

[0020] A real-time vertical acceleration curve is generated based on the vertical acceleration signal;

[0021] If the curve of the real-time vertical acceleration curve exceeds the preset curve, the vibration damper will enter a self-heating state.

[0022] The real-time driving information includes the vertical acceleration signal.

[0023] In one embodiment, the vehicle further includes an air spring; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the vehicle further includes the following steps:

[0024] If the shock absorber cannot enter the self-heating state, the secondary chamber of the air spring is opened to allow the shock absorber to enter the preheating state.

[0025] In one embodiment, the number of secondary chambers of the air spring that are opened is negatively correlated with the real-time driving information.

[0026] In one embodiment, after the step of opening the secondary chamber of the air spring if the damper cannot self-heat, the method further includes the following steps:

[0027] The real-time temperature of the vibration damper is obtained through the temperature sensor.

[0028] Determine whether the real-time temperature is higher than the preset temperature.

[0029] In one embodiment, after the step of determining whether the real-time temperature is higher than the preset temperature, the following step is further included:

[0030] If the real-time temperature is higher than the preset temperature, then the secondary chamber of the air spring is closed;

[0031] If the real-time temperature is lower than the preset temperature, the secondary chamber of the air spring remains open.

[0032] The present invention also proposes an automotive shock absorber preheating system, the automotive shock absorber preheating system including a control device, the control device including a memory, a processor and a control program of the automotive shock absorber preheating system stored in the memory, the processor executing the control program of the automotive shock absorber preheating system to implement the steps of the automotive shock absorber preheating method as described in any of the preceding claims.

[0033] The present invention also proposes an automobile comprising the automobile shock absorber preheating system as described in claim 9.

[0034] The technical solution of the present invention first obtains the real-time temperature of the shock absorber through a temperature sensor, then determines whether the shock absorber has entered a preheating state based on the real-time temperature of the shock absorber, and finally, if the real-time temperature of the shock absorber is lower than a preset temperature, the shock absorber enters a preheating state; wherein, the sensing device includes the temperature sensor, so that the car shock absorber quickly enters a preheating state to heat itself, thereby avoiding the risk of damage in a low-temperature environment, and also improving the driving comfort of the user. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0036] Figure 1 A schematic flowchart of the first embodiment of the automobile shock absorber preheating method provided by the present invention;

[0037] Figure 2 A schematic flowchart of a second embodiment of the automotive shock absorber preheating method provided by the present invention;

[0038] Figure 3 This is a schematic flowchart of the third embodiment of the automotive shock absorber preheating method provided by the present invention;

[0039] Figure 4 This is a schematic flowchart of the fourth embodiment of the automotive shock absorber preheating method provided by the present invention;

[0040] Figure 5 This is a schematic flowchart of the fifth embodiment of the automotive shock absorber preheating method provided by the present invention;

[0041] Figure 6 This is a schematic flowchart of the sixth embodiment of the automobile shock absorber preheating method provided by the present invention;

[0042] Figure 7 for Figure 1 A schematic diagram of the structure of the control device for the hardware operating environment involved in the embodiment of the Chinese version;

[0043] Figure 8 The vertical acceleration curve of the automotive shock absorber preheating system provided by the present invention.

[0044] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0047] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0048] Currently, most mid-to-high-end cars are equipped with air springs and CDC (Continuous Damping Control) shock absorbers to achieve a better driving experience and meet the demands for handling and comfort. In winter, especially in northern regions, due to low ambient temperatures and prolonged parking, the viscosity of the fluid inside the shock absorbers decreases, increasing the damping value and affecting ride comfort. Furthermore, if a vehicle encounters a significant road impact, the high damping value may prevent the shock absorbers from absorbing vibrations properly, leading to damage. CDC shock absorbers are expensive to repair and replace, increasing the financial burden of vehicle ownership. Therefore, in low ambient temperatures, it is necessary to preheat the shock absorbers as soon as possible to improve comfort and reduce the risk of damage.

[0049] The existing technology involves covering the outer end of the shock absorber with a heating resistance wire, which heats the shock absorber. However, this has the following problems: heating the resistance wire itself requires a lot of electrical energy, resulting in high energy consumption, which affects the vehicle's range in today's electric vehicles; at the same time, considering the heat transfer effect, the heating efficiency is not high when the resistance wire is covering the outer end of the shock absorber.

[0050] To address the aforementioned problems, this invention provides a method, system, and vehicle for preheating automotive shock absorbers. The aim is to provide a method, system, and vehicle for preheating automotive shock absorbers in low-temperature environments to quickly raise the shock absorber temperature to its normal operating temperature range, thereby improving comfort and reducing the risk of damage. Figures 1 to 8 The following is an embodiment of the automobile shock absorber preheating method provided by the present invention, and will be described in conjunction with specific drawings.

[0051] Please see Figure 1 In one embodiment of the present invention, the automobile includes a shock absorber and a sensing device; the automobile shock absorber preheating method includes the following steps:

[0052] S10, the real-time temperature of the vibration damper is obtained through a temperature sensor;

[0053] S20, determine whether the vibration damper has entered the preheating state based on the real-time temperature of the vibration damper;

[0054] S30, if the real-time temperature of the vibration damper is lower than the preset temperature, the vibration damper enters the preheating state;

[0055] The sensing device includes the temperature sensor.

[0056] The technical solution of the present invention first obtains the real-time temperature of the shock absorber through a temperature sensor, then determines whether the shock absorber has entered a preheating state based on the real-time temperature of the shock absorber, and finally, if the real-time temperature of the shock absorber is lower than a preset temperature, the shock absorber enters a preheating state; wherein, the sensing device includes the temperature sensor, so that the car shock absorber quickly enters a preheating state to heat itself, thereby avoiding the risk of damage in a low-temperature environment, and also improving the driving comfort of the user.

[0057] Furthermore, after the step of stating that if the real-time temperature of the vibration damper is lower than a preset temperature, the vibration damper enters a preheating state, the following steps are also included:

[0058] S31, Obtain the real-time driving information of the vehicle as measured by the sensing device;

[0059] S32, determine whether the shock absorber will enter a self-heating state based on the real-time driving information;

[0060] The preheating state includes a self-heating state.

[0061] Understandably, please refer to Figure 2 The shock absorber is heated by two methods: external heating and self-heating. Generally, when self-heating is possible, no external heating is required. Specifically, the vehicle's shock absorber preheating system first acquires the real-time driving information of the vehicle measured by the sensing device, and then determines whether the shock absorber will enter a self-heating state based on the real-time driving information.

[0062] Furthermore, the sensing device includes a height sensor; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the following steps are also included:

[0063] S321, acquire the pitch angle and roll angle of the vehicle as measured by the altitude sensor;

[0064] S322, if either the pitch angle or the roll angle is greater than a preset value, the shock absorber will enter a self-heating state;

[0065] The real-time driving information includes the pitch angle and the roll angle.

[0066] Understandably, please refer to Figure 3 The self-heating method of the shock absorber includes utilizing road conditions during driving. The vehicle is equipped with a height sensor to obtain the road's tilt angle, thereby achieving self-heating of the shock absorber. Specifically, firstly, the vehicle's pitch and roll angles are measured by the height sensor. Then, if either the pitch or roll angle is greater than a preset value, the shock absorber enters a self-heating state. The principle is that if the pitch and roll angles are greater than the preset values, it indicates that the road surface is tilted to a certain extent and is uneven. During the stretching and compression process, the internal oil of the shock absorber generates heat through the friction between the piston and valve plates, causing the shock absorber to heat up. Therefore, on bumpy roads, the internal friction of the shock absorber generates heat, enabling self-heating.

[0067] Furthermore, the sensing device also includes an acceleration sensor; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the following steps are also included:

[0068] S323, acquire the vertical acceleration signal of the vehicle measured by the acceleration sensor;

[0069] S324, Generate a real-time vertical acceleration curve based on the vertical acceleration signal;

[0070] S325, if the curve of the real-time vertical acceleration curve exceeds the preset curve, the shock absorber will enter a self-heating state.

[0071] The real-time driving information includes the vertical acceleration signal.

[0072] Understandably, please refer to Figure 4 Not only can the shock absorber's internal friction automatically heat up to a normal temperature on uneven, undulating road surfaces, but even on smooth roads, the internal friction of the shock absorber can self-heat due to the slight friction generated by the roughness of the road surface. Specifically, firstly, the vertical acceleration signal of the vehicle measured by the acceleration sensor is acquired, then a real-time vertical acceleration curve is generated based on the vertical acceleration signal, and finally, if the curve of the real-time vertical acceleration curve exceeds a preset curve, the shock absorber will enter a self-heating state.

[0073] Specifically, if the road surface is smooth, the surface roughness needs to be checked; even minor vibrations can still force the shock absorbers to passively preheat. Please refer to [link / reference]. Figure 8The acceleration sensor is used to collect vertical acceleration signals and convert the power spectral density of the vehicle vertical acceleration. The area of ​​the corresponding frequency band represents the vibration energy. Among them, 15-20Hz represents the unsprung vibration. If the road surface is uneven and the damper temperature is low and the damping is large, the area of ​​the 15-20Hz curve will have a large increase relative to the preset value.

[0074] Furthermore, the vehicle also includes air springs; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the following steps are also included:

[0075] S326, if the shock absorber cannot enter the self-heating state, then the secondary chamber of the air spring is opened to allow the shock absorber to enter the preheating state.

[0076] Understandably, please refer to Figure 5 If the self-heating method fails to raise the temperature of the shock absorber—that is, when the vehicle is driving on a smooth road surface with low roughness, causing neither the height sensor nor the acceleration sensor to detect a signal that would allow the shock absorber to self-heat—the vehicle determines that the shock absorber cannot enter the self-heating state. Therefore, the secondary chamber of the air spring is activated to allow the shock absorber to enter a preheating state. In other words, if the ambient temperature is low, the vehicle's pitch or roll angle is less than a preset value, and the 15-20Hz graphic area increment does not exceed a set value, it indicates that the shock absorber has not reached its ideal operating temperature. Furthermore, if the road surface is smooth and does not trigger passive heating of the shock absorber, the secondary chamber of the air spring needs to be activated to reduce the vehicle's suspension stiffness and increase the shock absorber's extension and compression stroke, allowing the shock absorber to heat up to its normal operating temperature as quickly as possible.

[0077] Furthermore, the number of secondary chambers of the air spring that are opened is negatively correlated with the real-time driving information.

[0078] It is understood that the opening spring has multiple secondary chambers. The more secondary chambers that are opened, the faster the vehicle suspension stiffness decreases, which in turn increases the speed of the shock absorber's stretching and compression strokes. This allows the shock absorber to heat up to its normal operating temperature more quickly. Therefore, on relatively smooth and flat road surfaces, the air spring can open more secondary chambers.

[0079] Furthermore, after the step of opening the secondary chamber of the air spring if the shock absorber cannot self-heat, the following steps are also included:

[0080] S3261, The real-time temperature of the vibration damper is obtained through the temperature sensor;

[0081] S3262, determine whether the real-time temperature is higher than the preset temperature.

[0082] Understandably, please refer to Figure 6 After the vehicle shock absorber preheating system has finished heating the shock absorber, the real-time temperature of the shock absorber can be obtained through the temperature sensor. Then, it can be determined whether the real-time temperature is higher than the preset temperature. If the temperature is higher than the preset temperature, the vehicle shock absorber preheating system is turned off; otherwise, it remains on.

[0083] Furthermore, after the step of determining whether the real-time temperature is higher than the preset temperature, the following steps are also included:

[0084] S32621, If ​​the real-time temperature is higher than the preset temperature, then the secondary chamber of the air spring is closed;

[0085] S32622, If the real-time temperature is lower than the preset temperature, the secondary chamber of the air spring is kept open.

[0086] Understandably, please refer to Figure 6 After determining whether the real-time temperature is higher than the preset temperature, if the real-time temperature is higher than the preset temperature, the secondary chamber of the air spring is closed, and the vehicle shock absorber preheating system is turned off; if the real-time temperature is lower than the preset temperature, the secondary chamber of the air spring is kept open, that is, the vehicle shock absorber preheating system is kept on.

[0087] It is understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0088] This invention also discloses an automotive shock absorber preheating system, which further includes a control device. For details on implementing the aforementioned automotive shock absorber preheating method, please refer to [link to relevant documentation]. Figure 7The control device includes: a processor 1001, such as a CPU; a communication bus 1002; a user interface 1003; a network interface 1004; and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed RAM or a non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0089] Those skilled in the art will understand that Figure 7 The structure of the control device shown does not constitute a limitation on the control device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0090] like Figure 7 As shown, the memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and the control program for the vehicle shock absorber preheating system.

[0091] exist Figure 7 In the control device shown, the processor 1001 calls the control program of the automobile shock absorber preheating system stored in the memory 1005 and executes the steps of the automobile shock absorber preheating method.

[0092] The present invention also proposes an automobile, the automobile including the automobile shock absorber preheating system as described above, the automobile shock absorber preheating system being used to perform the steps of the automobile shock absorber preheating method, the specific steps of the automobile shock absorber preheating method referring to the above embodiments. Since the automobile adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0093] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for preheating an automotive shock absorber, wherein, The automobile includes a shock absorber and a sensing device; characterized in that the preheating method for the automobile shock absorber includes the following steps: The real-time temperature of the vibration damper is obtained through a temperature sensor; Determine whether the vibration damper has entered the preheating state based on the real-time temperature of the vibration damper; If the real-time temperature of the vibration damper is lower than the preset temperature, the vibration damper enters the preheating state. The sensing device includes the temperature sensor; After the step of stating that if the real-time temperature of the vibration damper is lower than the preset temperature, the vibration damper enters a preheating state, the following steps are also included: The sensor measures the real-time driving information of the vehicle. Based on the real-time driving information, determine whether the shock absorber will enter a self-heating state; The preheating state includes a self-heating state; The sensing device includes a height sensor; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the following steps are also included: The vehicle's pitch and roll angles are obtained from the height sensor. If either the pitch angle or the roll angle is greater than a preset value, the shock absorber will enter a self-heating state. The real-time driving information includes the pitch angle and the roll angle; The vehicle also includes air springs; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the following steps are also included: If the shock absorber cannot enter the self-heating state, the secondary chamber of the air spring is opened to allow the shock absorber to enter the preheating state. The number of secondary chambers of the air spring that are opened is negatively correlated with the real-time driving information.

2. The preheating method for automotive shock absorbers as described in claim 1, characterized in that, The sensing device further includes an acceleration sensor; after the step of determining whether the shock absorber will enter a self-heating state based on the real-time driving information, the following steps are also included: Acquire the vertical acceleration signal of the vehicle as measured by the acceleration sensor; A real-time vertical acceleration curve is generated based on the vertical acceleration signal; If the curve of the real-time vertical acceleration curve exceeds the preset curve, the vibration damper will enter a self-heating state. The real-time driving information includes the vertical acceleration signal.

3. The preheating method for automotive shock absorbers as described in claim 1, characterized in that, After the step of opening the secondary chamber of the air spring if the shock absorber cannot self-heat, the following steps are also included: The real-time temperature of the vibration damper is obtained through the temperature sensor. Determine whether the real-time temperature is higher than the preset temperature.

4. The preheating method for automotive shock absorbers as described in claim 3, characterized in that, After the step of determining whether the real-time temperature is higher than the preset temperature, the following steps are also included: If the real-time temperature is higher than the preset temperature, then the secondary chamber of the air spring is closed; If the real-time temperature is lower than the preset temperature, the secondary chamber of the air spring remains open.

5. A preheating system for automotive shock absorbers, characterized in that, The automotive shock absorber preheating system includes a control device, which includes a memory, a processor, and a control program for the automotive shock absorber preheating system stored in the memory. The processor executes the control program for the automotive shock absorber preheating system to implement the steps of the automotive shock absorber preheating method as described in any one of claims 1 to 4.

6. A car, characterized in that, The vehicle includes the vehicle shock absorber preheating system as described in claim 5.

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