Automobile shock absorber preheating method and system and automobile

Abstract

The invention discloses an automobile shock absorber preheating method and system and an automobile, and relates to the technical field of automobile shock absorbers.The automobile shock absorber preheating method comprises the steps that the real-time temperature of a shock absorber is obtained through a temperature sensor; judging whether the shock absorber enters a preheating state or not according to the real-time temperature of the shock absorber; 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 comprises the temperature sensor. According to the technical scheme, firstly, the real-time temperature of the shock absorber is obtained through a temperature sensor, then whether the shock absorber enters the preheating state or not is judged according to the real-time temperature of the shock absorber, and finally, if the real-time temperature of the shock absorber is lower than the preset temperature, the shock absorber enters the preheating state; in this way, the automobile shock absorber rapidly enters the preheating state to heat the automobile shock absorber, and then the risk of damage in the low-temperature environment is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile shock absorbers, and in particular to an automobile shock absorber preheating method, a preheating system and an automobile. Background Art

[0002] At present, most mid-to-high-end vehicles are equipped with air springs and CDC shock absorbers to meet the needs of handling and comfort in pursuit of a better driving experience. In winter, especially in northern regions, due to the low ambient temperature, the viscosity of the oil inside the shock absorber decreases and the damping value increases after the vehicle has been parked for a long time, which will affect comfort. At the same time, if there is a large road impact, the shock absorber cannot absorb the vibration normally due to the large damping value, which will cause damage to the shock absorber. The maintenance and replacement costs of CDC shock absorbers are high, which increases the cost burden of using the vehicle. Therefore, when the ambient temperature is low, the shock absorber needs to be preheated as soon as possible to improve comfort and reduce the risk of damage.

[0003] The existing technology is to cover the outer end of the shock absorber with a heating resistor wire and use the heat generated by the resistor wire to heat the shock absorber. However, this has the following problems: the heating of the resistor wire itself consumes a lot of electricity and has high energy consumption. In today's electric vehicles, the vehicle's endurance is affected; at the same time, the resistor wire is covered on the outer end of the shock absorber, and considering the influence of heat transfer, the heating efficiency is not high. Summary of the invention

[0004] The main purpose of the present invention is to propose a car shock absorber preheating method, a preheating system and a car, aiming to provide a car shock absorber preheating method, a preheating system and a car that can quickly raise the shock absorber temperature to the normal operating temperature range in a low temperature environment, improve comfort and reduce the risk of damage.

[0005] To achieve the above-mentioned object, the present invention provides a method for preheating a shock absorber of an automobile, wherein the automobile includes a shock absorber and a sensing device; the method for preheating a shock absorber of an automobile includes the following steps:

[0006] Acquiring the real-time temperature of the shock absorber by means of a temperature sensor;

[0007] Determining whether the shock absorber has entered a preheating state according to the real-time temperature of the shock absorber;

[0008] If the real-time temperature of the shock absorber is lower than a preset temperature, the shock absorber enters a preheating state;

[0009] Wherein, the sensing device includes the temperature sensor.

[0010] In one embodiment, after the step of causing the shock absorber to enter a preheating state if the real-time temperature of the shock absorber is lower than a preset temperature, the following steps are further included:

[0011] Acquiring real-time driving information of the vehicle measured by the sensing device;

[0012] determining whether the shock absorber will enter a self-heating state according to the real-time driving information;

[0013] Wherein, 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 according to the real-time driving information, the following steps are also included:

[0015] Acquire the pitch angle and roll angle of the vehicle measured by the height sensor;

[0016] If one of the pitch angle and the roll angle is greater than a preset value, the shock absorber will enter a self-heating state;

[0017] Wherein, 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 according to the real-time driving information, the following steps are also included:

[0019] Acquiring a vertical acceleration signal of the vehicle measured by the acceleration sensor;

[0020] generating a real-time vertical acceleration curve graph according to the vertical acceleration signal;

[0021] If the curve of the real-time vertical acceleration curve exceeds the preset curve, the shock absorber will enter a self-heating state;

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

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

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

[0025] In one implementation, the number of sub-cavities 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 auxiliary chamber of the air spring if the shock absorber cannot self-heat, the following steps are also included:

[0027] Acquiring the real-time temperature of the shock absorber by means of the temperature sensor;

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

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

[0030] If the real-time temperature is higher than the preset temperature, closing the auxiliary chamber of the air spring;

[0031] If the real-time temperature is lower than the preset temperature, the auxiliary chamber of the air spring is kept in an open state.

[0032] The present invention also proposes a vehicle shock absorber preheating system, which includes a control device, which includes a memory, a processor, and a control program of the vehicle shock absorber preheating system stored in the memory, and the processor executes the control program of the vehicle shock absorber preheating system to implement the steps of the vehicle shock absorber preheating method as described in any of the above items.

[0033] The present invention also provides an automobile, comprising the automobile shock absorber preheating system as claimed 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 enters a preheating state according to 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 automobile shock absorber quickly enters a preheating state to heat itself, thereby avoiding the risk of damage in a low-temperature environment, and at the same time improving the comfort of the user driving the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0036] Figure 1 A schematic flow chart of a first embodiment of a method for preheating a shock absorber of an automobile provided by the present invention;

[0037] Figure 2 A schematic flow chart of a second embodiment of the method for preheating a shock absorber of an automobile provided by the present invention;

[0038] Figure 3 A schematic flow chart of a third embodiment of the automobile shock absorber preheating method provided by the present invention;

[0039] Figure 4 A schematic flow chart of a fourth embodiment of the automobile shock absorber preheating method provided by the present invention;

[0040] Figure 5 A schematic flow chart of a fifth embodiment of the method for preheating a shock absorber of an automobile provided by the present invention;

[0041] Figure 6 A schematic flow chart of a 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 a control device for a hardware operating environment involved in the embodiment scheme;

[0043] Figure 8 This is a vertical acceleration curve diagram of the automobile shock absorber preheating system provided by the present invention.

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

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] At present, most mid-to-high-end vehicles are equipped with air springs and CDC shock absorbers to meet the needs of handling and comfort in pursuit of a better driving experience. In winter, especially in northern regions, due to the low ambient temperature, the viscosity of the oil inside the shock absorber decreases and the damping value increases after the vehicle has been parked for a long time, which will affect comfort. At the same time, if there is a large road impact, the shock absorber cannot absorb the vibration normally due to the large damping value, which will cause damage to the shock absorber. The maintenance and replacement costs of CDC shock absorbers are high, which increases the cost burden of using the vehicle. Therefore, when the ambient temperature is low, the shock absorber needs to be preheated as soon as possible to improve comfort and reduce the risk of damage.

[0049] The existing technology is to cover the outer end of the shock absorber with a heating resistor wire and use the heat generated by the resistor wire to heat the shock absorber. However, this has the following problems: the heating of the resistor wire itself consumes a lot of electricity and has high energy consumption. In today's electric vehicles, the vehicle's endurance is affected; at the same time, the resistor wire is covered on the outer end of the shock absorber, and considering the influence of heat transfer, the heating efficiency is not high.

[0050] In order to solve the above problems, the present invention provides a method, system and vehicle for preheating a shock absorber of an automobile, aiming to provide a method, system and vehicle for preheating a shock absorber of an automobile, which can raise the temperature of the shock absorber to the normal operating temperature range as quickly as possible in a low temperature environment, improve comfort and reduce the risk of damage; Figures 1 to 8 This is an embodiment of the automobile shock absorber preheating method provided by the present invention, and the automobile shock absorber preheating method will be described below in conjunction with specific drawings.

[0051] See also 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, obtaining the real-time temperature of the shock absorber through a temperature sensor;

[0053] S20, judging whether the shock absorber has entered a preheating state according to the real-time temperature of the shock absorber;

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

[0055] Wherein, 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 enters a preheating state according to 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 automobile shock absorber quickly enters a preheating state to heat itself, thereby avoiding the risk of damage in a low-temperature environment, and at the same time improving the comfort of the user driving the car.

[0057] In addition, after the step of causing the shock absorber to enter a preheating state if the real-time temperature of the shock absorber is lower than a preset temperature, the following steps are also included:

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

[0059] S32, judging whether the shock absorber will enter a self-heating state according to the real-time driving information;

[0060] Wherein, the preheating state includes a self-heating state.

[0061] Understandably, see Figure 2 The heating methods of the shock absorber include external heating and self-heating. Generally, when self-heating is possible, no external heating intervention is required. Specifically, the shock absorber preheating system of the automobile first obtains the real-time driving information of the automobile measured by the sensing device, and then determines whether the shock absorber will enter the self-heating state according to 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 according to the real-time driving information, the following steps are also included:

[0063] S321, obtaining the pitch angle and roll angle of the vehicle measured by the height sensor;

[0064] S322, if one of the pitch angle and the roll angle is greater than a preset value, the shock absorber enters a self-heating state;

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

[0066] Understandably, see Figure 3 The self-heating means of the shock absorber includes utilizing the road conditions during driving, setting the height sensor on the car, and then obtaining the inclination angle of the road surface to achieve self-heating of the shock absorber. Specifically, firstly, the pitch angle and roll angle of the car measured by the height sensor are obtained, and then, if one of the pitch angle and the roll angle is greater than a preset value, the shock absorber will enter a self-heating state; the principle is that if the pitch angle and the roll angle are greater than the preset value, it means that the road surface is inclined to a certain extent and the road surface is uneven, and the internal oil of the shock absorber itself can also generate heat through the friction between the piston and the valve plate during the stretching and compression process, so that the shock absorber is heated up, and then on a bumpy road, the shock absorber generates heat due to the internal friction of the shock absorber itself, so that the shock absorber is self-heated.

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

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

[0069] S324, generating a real-time vertical acceleration curve graph according to the vertical acceleration signal;

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

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

[0072] Understandably, see Figure 4 Not only can the temperature of the shock absorber be raised to a normal state by automatically heating the internal friction of the shock absorber on an uneven and undulating road surface, but even on a flat road, the internal friction of the shock absorber can be self-heated by virtue of the slight friction force generated by the roughness of the road surface. Specifically, firstly, the vertical acceleration signal of the automobile measured by the acceleration sensor is obtained, and then a real-time vertical acceleration curve graph is generated according to the vertical acceleration signal. Finally, if the curve of the real-time vertical acceleration curve graph exceeds a preset curve, the shock absorber will enter a self-heating state.

[0073] Specifically, if the road surface is flat, the road roughness needs to be detected, and the fine vibration can still force the shock absorber to passively warm up. Figure 8The acceleration sensor is used to collect the vertical acceleration signal and convert the power spectrum density into the vehicle vertical acceleration. The corresponding frequency band area represents the vibration energy, wherein 15-20 Hz represents the unsprung vibration. If the road surface is uneven and the shock absorber temperature is low and the damping is large, the 15-20 Hz curve area will have a large increment relative to the preset value.

[0074] Furthermore, the automobile further comprises an air spring; after the step of determining whether the shock absorber will enter a self-heating state according to the real-time driving information, the following steps are further included:

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

[0076] Understandably, see Figure 5 , if the temperature of the shock absorber cannot be raised by the self-heating method, that is, when the car is driving on a flat road with a low roughness, the height sensor and the acceleration sensor cannot detect the signal that can make the shock absorber achieve self-heating. Therefore, the car determines that the shock absorber cannot enter the self-heating state at this time, and then opens the auxiliary chamber of the air spring to allow the shock absorber to enter the preheating state. That is, if the ambient temperature is low, the pitch angle or roll angle of the vehicle body is less than the preset value, and the 15-20Hz graph area increment does not exceed the set value, it means that the shock absorber has not reached the ideal working temperature, and the road surface is flat and good, and the shock absorber cannot be stimulated for passive heating. At this time, it is necessary to open the auxiliary chamber of the air spring, reduce the vehicle suspension stiffness, increase the tension and compression stroke of the shock absorber, and let the shock absorber heat up to the normal working temperature as soon as possible.

[0077] Furthermore, the number of sub-cavities of the air spring opened is negatively correlated with the real-time driving information.

[0078] It can be understood that there are multiple sub-cavities for opening the spring. The more sub-cavities are opened, the faster the vehicle suspension stiffness decreases, thereby increasing the speed of the shock absorber extension and compression stroke, so that the shock absorber heats up to the normal working temperature faster. Therefore, on a relatively flatter and smoother road surface, the more sub-cavities the air spring opens.

[0079] In addition, after the step of opening the auxiliary chamber of the air spring if the shock absorber cannot be self-heated, the following steps are also included:

[0080] S3261, obtaining the real-time temperature of the shock absorber through the temperature sensor;

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

[0082] Understandably, see Figure 6 After the automobile shock absorber preheating system completes heating the shock absorber, the real-time temperature of the shock absorber can be first obtained through the temperature sensor, and then it is determined whether the real-time temperature is higher than the preset temperature. If the temperature is higher than the preset temperature, the automobile shock absorber preheating system is turned off, otherwise, it is kept 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, closing the auxiliary chamber of the air spring;

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

[0086] Understandably, see Figure 6 After the step of judging whether the real-time temperature is higher than the preset temperature, if the real-time temperature is higher than the preset temperature, the auxiliary chamber of the air spring is closed, and the automobile shock absorber preheating system is closed; if the real-time temperature is lower than the preset temperature, the auxiliary chamber of the air spring is kept open, that is, the automobile shock absorber preheating system is kept open.

[0087] It is to be understood that, although the various steps in the flowchart in the embodiment of the present application are displayed in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps does not have a strict order restriction, and it can be performed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0088] The present invention also discloses a vehicle shock absorber preheating system, the vehicle shock absorber preheating system also includes a control device. To meet the implementation of the above-mentioned vehicle shock absorber preheating method, please refer to Figure 7, the 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 realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WiFi interface). The memory 1005 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. 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 in the figure does not constitute a limitation of the control device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

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

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

[0092] The present invention further proposes an automobile, comprising the automobile shock absorber preheating system as described above, wherein the automobile shock absorber preheating system is used to execute the steps of the automobile shock absorber preheating method. The specific steps of the automobile shock absorber preheating method refer to the above embodiments. Since the automobile adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0093] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A method for preheating a vehicle shock absorber, in, The automobile comprises a shock absorber and a sensing device; the method for preheating the automobile shock absorber comprises the following steps: Acquiring the real-time temperature of the shock absorber by means of a temperature sensor; Determining whether the shock absorber has entered a preheating state according to the real-time temperature of the shock absorber; 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.

2. The automobile shock absorber preheating method as claimed in claim 1, It is characterized in that After the step of causing the shock absorber to enter a preheating state if the real-time temperature of the shock absorber is lower than a preset temperature, the following steps are also included: Acquiring real-time driving information of the vehicle measured by the sensing device; determining whether the shock absorber will enter a self-heating state according to the real-time driving information; Wherein, the preheating state includes a self-heating state.

3. The automobile shock absorber preheating method as claimed in claim 2, It is characterized in that The sensing device includes a height sensor; after the step of judging whether the shock absorber will enter a self-heating state according to the real-time driving information, the following steps are also included: Acquire the pitch angle and roll angle of the vehicle measured by the height sensor; If one of the pitch angle and the roll angle is greater than a preset value, the shock absorber will enter a self-heating state; Wherein, the real-time driving information includes the pitch angle and the roll angle.

4. The automobile shock absorber preheating method as claimed in claim 2, It is 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 according to the real-time driving information, the following steps are also included: Acquiring a vertical acceleration signal of the vehicle measured by the acceleration sensor; generating a real-time vertical acceleration curve graph according to the vertical acceleration signal; If the curve of the real-time vertical acceleration curve exceeds the preset curve, the shock absorber will enter a self-heating state; Wherein, the real-time driving information includes the vertical acceleration signal.

5. The automobile shock absorber preheating method as claimed in claim 2, It is characterized in that The automobile further includes an air spring; after the step of determining whether the shock absorber will enter a self-heating state according to the real-time driving information, the following steps are also included: If the shock absorber cannot enter the self-heating state, the auxiliary chamber of the air spring is opened to allow the shock absorber to enter the preheating state.

6. The automobile shock absorber preheating method as claimed in claim 5, It is characterized in that The number of sub-cavities of the air spring opened is negatively correlated with the real-time driving information.

7. The automobile shock absorber preheating method as claimed in claim 5, It is characterized in that After the step of opening the auxiliary chamber of the air spring if the shock absorber cannot be self-heated, the following steps are also included: Acquiring the real-time temperature of the shock absorber by means of the temperature sensor; Determine whether the real-time temperature is higher than a preset temperature.

8. The automobile shock absorber preheating method as claimed in claim 7, It is 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, closing the auxiliary chamber of the air spring; If the real-time temperature is lower than the preset temperature, the auxiliary chamber of the air spring is kept in an open state.

9. A car shock absorber preheating system, It is characterized in that The automobile shock absorber preheating system includes a control device, which includes a memory, a processor, and a control program of the automobile shock absorber preheating system stored in the memory. The processor executes the control program of the automobile shock absorber preheating system to implement the steps of the automobile shock absorber preheating method according to any one of claims 1 to 8.

10. A car, It is characterized in that The automobile comprises the automobile shock absorber preheating system as claimed in claim 9.

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