Vehicle

Abstract

The invention aims to solve the problem that the vehicle can be started more quickly and the energy efficiency can be improved. In order to solve the problem, the vehicle height adjusting device is provided with a vehicle height adjusting mechanism which is controlled by a control unit and adjusts the vehicle height of the vehicle. When performing the start control, the control unit starts a first control for changing the vehicle height from a standard vehicle height to a first vehicle height higher than the standard vehicle height, and then starts a second control for changing the vehicle height from the first vehicle height to a second vehicle height lower than the standard vehicle height. A brake operation device for operating a brake device of a vehicle and an accelerator operation device for adjusting the output of a power source of the vehicle are provided. When the control unit repeatedly operates the brake operation element and the accelerator operation element during parking of the vehicle, the operation mode of the power source is switched from a normal mode to a start mode in which start control can be performed, and the first control is started, and when the brake operation element is released in the start mode, the second control is started.

Description

Technical Field

[0001] The present invention relates to a vehicle, and particularly to a vehicle capable of performing a start control that enables a rapid start. Background Art

[0002] In recent years, measures for realizing a low-carbon society or a decarbonized society have become active, and research and development for reducing CO2 emissions and improving energy efficiency have also been carried out on vehicles. Specifically, as a technology for improving energy efficiency, a start control is known that can rapidly start a vehicle such as a four-wheel vehicle.

[0003] Patent Document 1 discloses a structure in which, in a start control applied to a four-wheel vehicle, the driving force of the power unit is optimized such that the slip ratio of the wheels becomes a value that maximizes the acceleration at the start.

[0004] [Prior Art Documents]

[0005] (Patent Document)

[0006] Patent Document 1: Japanese Patent No. 6817279 Summary of the Invention

[0007] [Problems to be Solved by the Invention]

[0008] However, in the technology of Patent Document 1, no discussion has been made on further improving the energy efficiency at the start by using factors other than the driving force of the power unit.

[0009] In order to solve the above problems, an object of the present application is to enable a more rapid start when starting a vehicle, and at the same time, to be conducive to improving energy efficiency.

[0010] [Technical Means for Solving the Problems]

[0011] In order to achieve the foregoing object, a first feature of the present invention is to provide a vehicle having a control unit that performs a start control capable of a rapid start. The vehicle is provided with a vehicle height adjustment mechanism that is controlled by the control unit to adjust the vehicle height of the vehicle. When performing the start control, the control unit starts a first control that is a vehicle height adjustment control for changing the vehicle height from a standard vehicle height to a first vehicle height higher than the standard vehicle height, and then starts a second control that is a vehicle height adjustment control for changing the vehicle height from the first vehicle height to a second vehicle height lower than the standard vehicle height.

[0012] Further, a second feature is that there are a braking operation member for operating the braking device of the vehicle and an accelerator operation member for adjusting the output of the power source of the vehicle. If, during the parking process of the vehicle, the control unit repeatedly operates the braking operation member and the accelerator operation member, the operation mode of the power source is switched from the normal mode to a starting mode capable of performing the aforementioned starting control, and the aforementioned first control is started. When the braking operation member is released in the starting mode, the aforementioned second control is started.

[0013] Further, a third feature is that if the braking operation member is not released after the control unit switches the operation mode to the starting mode and a predetermined time has elapsed, the operation mode is switched from the starting mode to the normal mode, and the vehicle height is changed from the first vehicle height to the standard vehicle height.

[0014] Further, a fourth feature is that if a second predetermined time has elapsed after the control unit starts the second control, the vehicle height is changed from the second vehicle height to the standard vehicle height.

[0015] Further, a fifth feature is that the vehicle has front wheels and rear wheels, and the vehicle height adjustment mechanism is configured to be independently operable on the front wheel side and the rear wheel side, and the first vehicle height and the second vehicle height are different on the front wheel side and the rear wheel side.

[0016] Further, a sixth feature is that the vehicle has front wheels and rear wheels, and the vehicle height adjustment mechanism is configured to be independently operable on the front wheel side and the rear wheel side. If the braking operation member is released, the control unit starts the second control for one of the front wheel side or the rear wheel side, and then starts the second control for the other of the front wheel side or the rear wheel side.

[0017] Further, a seventh feature is that the vehicle has front wheels and rear wheels, and the vehicle height adjustment mechanism is provided on at least one of the front wheel side or the rear wheel side.

[0018] Furthermore, an eighth feature is that the vehicle height adjustment mechanism also serves as a shock absorber for supporting the wheels of the vehicle.

[0019] (Effects of the Invention)

[0020] According to the first feature, a vehicle has a control unit that performs starting control capable of a rapid start. The vehicle is provided with a vehicle height adjustment mechanism, and the vehicle height adjustment mechanism is controlled by the control unit to adjust the vehicle height. Since the control unit starts a first control of vehicle height adjustment control that changes the vehicle height from the standard vehicle height to a first vehicle height higher than the standard vehicle height when performing the starting control, and then starts a second control of vehicle height adjustment control that changes the vehicle height from the first vehicle height to a second vehicle height lower than the standard vehicle height, when performing the starting control, the downward inertial force generated by moving the vehicle body downward can be used to increase the load pressing the tires against the road surface. Thereby, a greater driving force can be imparted without the tires slipping, and a rapid start can be performed while improving energy efficiency.

[0021] According to the second feature, since there is a brake operating member for operating the brake device of the vehicle and an accelerator operating member for adjusting the output of the power source of the vehicle, if the control unit repeatedly operates the brake operating member and the accelerator operating member during the parking of the vehicle, the operation mode of the power source is switched from the normal mode to a starting mode capable of performing the starting control, and the first control is started. When the brake operating member is released in the starting mode, the second control is started. Therefore, starting control and vehicle height adjustment control corresponding to the driver's operation can be executed.

[0022] According to the third feature, since if the brake operating member is not released after the control unit switches the operation mode to the starting mode and a predetermined time elapses, the operation mode is switched from the starting mode to the normal mode, and the vehicle height is changed from the first vehicle height to the standard vehicle height, therefore, when the brake operating member is not released after the starting mode is switched and a predetermined time elapses, it can automatically return to the normal state as if the driver has no intention of starting. Thereby, the fuel consumption can be reduced while giving the driver a sense of security.

[0023] According to the fourth feature, since if a second predetermined time elapses after the control unit starts the second control, the vehicle height is changed from the second vehicle height to the standard vehicle height, therefore, after the start generated by the starting control, during the period until the second predetermined time elapses, the state with a lower vehicle height is maintained and the air resistance of the vehicle is reduced, and when the second predetermined time elapses, the vehicle height can be returned to the standard vehicle height to improve the turning performance of the vehicle, etc.

[0024] According to the fifth feature, since the aforementioned vehicle has front wheels and rear wheels, the aforementioned vehicle height adjustment mechanism is configured to be independently operable on the front wheel side and the rear wheel side, and the aforementioned first vehicle height and the aforementioned second vehicle height are different on the front wheel side and the rear wheel side. Therefore, when the first control and the second control are executed, an optimal vehicle body posture can be obtained in coordination with the differences in the front-rear weight distribution, four-wheel drive, front-wheel drive, rear-wheel drive, etc. of the vehicle.

[0025] According to the sixth feature, since the aforementioned vehicle has front wheels and rear wheels, the aforementioned vehicle height adjustment mechanism is configured to be independently operable on the front wheel side and the rear wheel side. If the aforementioned brake operating member is released, the aforementioned control unit starts the aforementioned second control on one of the aforementioned front wheel side or the aforementioned rear wheel side, and then starts the aforementioned second control on the other of the aforementioned front wheel side or the aforementioned rear wheel side. Therefore, by changing the timing of lowering the vehicle height on the front wheel side and the rear wheel side, vehicle height adjustment control suitable for various states can be executed.

[0026] According to the seventh feature, since the aforementioned vehicle has front wheels and rear wheels, the aforementioned vehicle height adjustment mechanism is provided on at least one of the front wheel side or the rear wheel side. Therefore, by applying the vehicle height adjustment mechanism only to the drive wheel side of, for example, a front-wheel drive vehicle or a rear-wheel drive vehicle, optimal vehicle height adjustment control can be executed.

[0027] According to the eighth feature, since the aforementioned vehicle height adjustment mechanism also serves as a shock absorber for supporting the wheels of the aforementioned vehicle, by applying, for example, a pneumatic shock absorber, the vehicle height can be increased by inflating and the air can be discharged at one time to quickly lower the vehicle height. Thus, there is no need to separately provide an independent vehicle height adjustment mechanism, and an increase in the number of parts can be prevented. Description of the Drawings

[0028] Figure 1 is a control concept diagram of a vehicle according to an embodiment of the present invention.

[0029] Figure 2 is a perspective view of the cab of the vehicle.

[0030] Figure 3 is a block diagram showing the control structure of the vehicle.

[0031] Figure 4 is a timing chart showing the relationship between the vehicle height adjustment control and the start control of the present embodiment.

[0032] Figure 5 is a flowchart showing the steps of the vehicle height adjustment control of the present embodiment. Detailed Description of the Invention

[0033] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Figure 1 is a control concept diagram of a vehicle 1 according to an embodiment of the present invention. In addition,Figure 2 This is a perspective view of the cab 10 of the vehicle 1. The four-wheel vehicle 1 with two front wheels WF and two rear wheels WR is a four-door sedan type four-wheel drive vehicle. The power unit P as the power source is composed of a combination of an internal combustion engine and a stepped automatic transmission. The front wheels WF and the rear wheels WR as drive wheels are respectively supported on the vehicle body via the front shock absorbers SF and the rear shock absorbers SR. The front wheels WF and the rear wheels WR are constituted by fitting rubber tires on the outer peripheral portions of wheels made of a metal such as aluminum.

[0034] The front shock absorbers SF and the rear shock absorbers SR of the present embodiment are constituted by so-called air suspensions that use air filling. According to this constitution, it is possible to increase the vehicle height of the vehicle 1 by filling more air and to lower the vehicle height by exhausting air. That is, the front shock absorbers SF and the rear shock absorbers SR not only absorb the shocks transmitted from the road surface during driving but also serve as a vehicle height adjustment mechanism capable of arbitrarily adjusting the vehicle height. The filling amount and filling pressure of air with respect to the front shock absorbers SF and the rear shock absorbers SR are controlled by the control unit 20. In this specification, the vehicle height corresponds to the distance between the lowermost part of the vehicle body and the road surface, that is, the lowest ground height, and can be calculated not only by directly using a sensor mounted on the vehicle body but also based on the total length of each shock absorber, etc.

[0035] Refer to Figure 2 , in the cab 10 of the vehicle 1, there are arranged a dashboard 5 covering the upper part of the instrument device 6, a steering wheel 2 for steering the front wheels WF, a seat 7 on which the driver sits, a shift operation part 8 for switching the state of the transmission, an accelerator pedal 3 as an accelerator operating member for adjusting the output of the power unit P, and a brake pedal 4 as a brake operating member for operating the brake devices of the front wheels WF and the rear wheels WR.

[0036] The shift operation part 8 can switch the state of the transmission to P (parking), R (reverse), D (drive), etc. During normal driving, by stepping on the accelerator pedal 3 in the state where D is selected, the output of the power unit P and the gear shift stage are selected according to the accelerator opening, vehicle speed, wheel speed, internal combustion engine speed, etc. In addition, the control unit 20 executes torque control for suppressing the slip and spin of the front wheels WF and the rear wheels WR by controlling the output of the power unit P. The torque control can set the slip ratio of the operation torque control to be larger during the start control compared to the normal state.

[0037] As described above, the vehicle 1 is configured to execute a starting control that enables a quick start. In the present embodiment, in a stopped state where the shift operation unit 8 is in the D position, if both the brake pedal 4 and the accelerator pedal 3 are depressed simultaneously, the operation mode of the power unit P is switched from the normal mode to the starting mode. At the same time, with the clutch disengaged, the engine speed is maintained at the speed most suitable for starting. Further, if the brake pedal 4 is released within a specified time, the output of the power unit P that can obtain the maximum accelerating force and the slip ratios of the front wheels WF and the rear wheels WR are controlled to perform a quick start.

[0038] Figure 3 FIG. is a block diagram showing the control configuration of the vehicle 1. Information from the accelerator pedal 3 and the brake pedal 4 is input to a control unit 20 constituted by a microcomputer or the like. Based on this information, the control unit 20 controls the vehicle height adjustment mechanisms SF and SR composed of the power unit P, the front shock absorber, and the rear shock absorber. The driving force of the power unit P is transmitted via a drive shaft or the like to the drive wheels WF and WR composed of the front wheels and the rear wheels. A timer 21 for calculating various times is housed in the control unit 20.

[0039] The forms of the accelerator pedal 3 and the brake pedal 4, the depressing forces and stroke amounts of the accelerator pedal 3 and the brake pedal 4 required to switch to the starting mode, etc. can be variously changed. For example, a starting mode switch for switching to the starting mode may also be provided.

[0040] Figure 4 FIG. is a timing chart showing the relationship between the vehicle height adjustment control and the starting control of the present embodiment. In this figure, a schematic diagram showing the vehicle height change of the vehicle 1 located on the road surface GND, the vehicle height H, the driving force T of the power unit P, and the increase amount F of the vertical load applied to the tires are sequentially shown from above. The vehicle height adjustment control of the present embodiment raises the vehicle height of the vehicle 1 at the timing when the operation mode of the power unit P is switched from the normal mode to the starting mode, and at the same time, lowers the vehicle height of the vehicle 1 at the timing when the brake pedal 4 is released, so that the load pressing the tires against the road surface can be increased by the downward inertial force generated by moving the vehicle body 1 downward. Thereby, a greater driving force can be imparted without the tires slipping, and a quick start can be performed while improving energy efficiency.

[0041] Time t0 is a state where the vehicle 1 is stopped. At time t1, the driver operates the brake pedal 4 and the accelerator pedal 3, so that the operation mode is switched to the starting mode, and at the same time, the control unit 20 starts the first control of driving the vehicle height adjustment mechanisms SF and SR and raising the vehicle height of the vehicle 1. The first control is a control for raising the vehicle height of the vehicle 1 to a first vehicle height H1 higher than the standard vehicle height H0 of the vehicle 1G.

[0042] Next, at time t2, by releasing the brake pedal 4, the transmission of driving force to the drive wheels WF and WR is started, and at the same time, the second control for lowering the vehicle height of the vehicle 1 is started. The second control is a control for lowering the vehicle height of the vehicle 1 from the first vehicle height H1 to a second vehicle height H2 lower than the standard vehicle height H0. The first vehicle height H1 can be set to, for example, +5 cm with respect to the standard vehicle height H0, and the second vehicle height H2 can be set to, for example, -5 cm with respect to the standard vehicle height H0. In addition, the distance from the standard vehicle height H0 to the first vehicle height H1 and the distance from the standard vehicle height H0 to the second vehicle height H2 can be made different.

[0043] By using this second control, it is possible to make the time t3 when the vertical load F becomes the peak F1 and the time t4 when the driving force T becomes the peak T2 close to each other, and to obtain the most efficient starting acceleration. In addition, it can be set such that the peak of the vertical load F and the peak of the driving force T arrive simultaneously. Moreover, after the vehicle 1 starts, the vehicle height H slowly recovers and returns to the standard vehicle height H0 at time t5.

[0044] The control unit 20 releases the brake pedal 4 at time t2, which is before a predetermined time T1 (for example, 3 seconds) has elapsed since the time t1 when switching from the normal mode to the starting mode, thereby starting the second control. On the other hand, if the brake pedal 4 is not released after the time t1 and the predetermined time T1 has elapsed, the control unit 20 switches the starting mode to the normal mode and at the same time executes the control for returning the vehicle height to the standard vehicle height H0. This is a control for automatically returning to the normal state when the driver has no intention of starting after the starting mode has been switched and the predetermined time T1 has elapsed. Thus, it is possible to reduce the fuel consumption while giving the driver a sense of security.

[0045] Figure 5 It is a flowchart showing the steps of the vehicle height adjustment control of the present embodiment. As described above, in the present embodiment, if the brake pedal 4 and the accelerator pedal 3 are repeatedly operated in the stopped state, the first control is started while switching from the normal mode to the starting mode, and if the brake operating member is released during the starting mode, the second control is started. Therefore, the starting control and the vehicle height adjustment control can be executed according to the driver's operation.

[0046] In step S1, based on the information from the wheel speed sensor, it is determined whether the vehicle 1 is in the stopped state. If the determination is affirmative, the process proceeds to step S2. In step S2, it is determined whether both the accelerator pedal 3 and the brake pedal 4 are repeatedly depressed. If the determination is affirmative, the process proceeds to step S3. If the determination in steps S1 and S2 is negative, the process returns to the determination in step S1 respectively.

[0047] In step S3, the operation mode of the power unit P is switched from the normal mode to the start mode. In step S4, the first control for raising the vehicle height to the first vehicle height H1 is executed. In the next step S5, the timer 21 is started to calculate the elapsed time since the start of the first control.

[0048] In step S6, it is determined whether the brake pedal 4 has been released before the time calculated by the timer 21 has elapsed the specified time T1. If the determination is affirmative, the process proceeds to step S7. On the other hand, if the determination in step S6 is negative, that is, if the brake pedal 4 has not been released within the specified time T1, it is considered that the driver has no intention of starting, and the process proceeds to step S11, where the start mode is canceled and the vehicle height is restored to the standard vehicle height H0.

[0049] In step S7, the second control for lowering the vehicle height to the second vehicle height H2 is started. In step S8, the timer 21 is started to calculate the second specified time T2. In step S9, it is determined whether the second specified time T2 has elapsed. If the determination is affirmative, the process proceeds to step S10. In step S10, the control for restoring from the second vehicle height H2 to the standard vehicle height H0 is started. On the other hand, if the determination in step S9 is negative, the process returns to the determination in step S9. In the present embodiment, if the second specified time T2 has elapsed after the start of the second control, the vehicle height is started to be changed from the second vehicle height to the standard vehicle height. Therefore, after starting due to the start control, the vehicle height can be maintained at a lower state and the air resistance of the vehicle 1 can be reduced during the period until the second specified time T2 has elapsed. At the same time, when the second specified time T2 has elapsed, the vehicle height can be restored to the standard vehicle height H0 to improve the turning performance of the vehicle 1, etc.

[0050] Then, in step S11, the start mode is canceled and a series of controls end. The timing for canceling the start mode can be set to the time point when a specified time has elapsed since the release of the brake pedal 4 or the time point when the vehicle speed reaches a specified value, etc.

[0051] As described above, according to the vehicle height adjustment control of the present invention, when performing the start control, the control unit 20 starts the first control for changing the vehicle height from the standard vehicle height H0 to the first vehicle height H1 that is higher than the standard vehicle height H0. After that, the second control for changing the vehicle height from the first vehicle height H1 to the second vehicle height H2 that is lower than the standard vehicle height H0 is started. Therefore, when performing the start control, the downward inertial force generated by moving the vehicle body downward can be used to increase the load pressing the tires against the road surface. As a result, a greater driving force can be imparted without the tires slipping, and a rapid start can be achieved while improving energy efficiency.

[0052] Further, if the brake pedal 4 and the accelerator pedal 3 are repeatedly operated during the parking process of the vehicle 1, the control unit 20 switches the operation mode of the power unit P from the normal mode to the starting mode and starts the first control at the same time. If the brake pedal 4 is released during the starting mode, the second control is started. Therefore, starting control and vehicle height adjustment control can be performed according to the driver's operation.

[0053] In the above-described embodiment, an air suspension can be applied as the vehicle height adjustment mechanism, so that the vehicle height can be quickly reduced by opening the air valve. However, in this case, a bump rubber for mitigating the impact when the vehicle height reaches the second vehicle height H2 and a variable valve for adjusting the damping force can be provided. Further, the vehicle height adjustment mechanism can also be configured to use a hydraulic device or a motor that is independent of the shock absorber. In this case, it is easy to perform more precise control such as making the vehicle height increase speed and decrease speed different.

[0054] Further, in the above-described embodiment, on the front wheel side and the rear wheel side, the timing of reducing from the first vehicle height H1 to the second vehicle height H2 by the second control is set to be the same. However, it is configured such that the front shock absorber SF and the rear shock absorber SR can operate independently. By staggering the timing on the front wheel side and the rear wheel side, for example, a pitching moment can be generated to prevent pitching up during acceleration or suppress skidding. That is, when the brake pedal 4 is released in the starting mode, the second control is started for one of the front wheel side or the rear wheel side, and then the second control is started for the other of the front wheel side or the rear wheel side, and vehicle height adjustment control suitable for various states can be performed. Further, if the first vehicle height and the second vehicle height are different on the front wheel side and the rear wheel side, an optimal vehicle body posture can be obtained in cooperation with the differences in the front and rear weight distribution of the vehicle, four-wheel drive, front-wheel drive, rear-wheel drive, etc. when performing the first control and the second control.

[0055] In the above-described embodiment, the vehicle 1 is a four-wheel drive vehicle, but it can also be a front-wheel drive vehicle or a rear-wheel drive vehicle. In this case, the cost can be reduced by providing the vehicle height adjustment mechanism only on the drive wheel side. Further, sensors for measuring the friction coefficient of the road surface and the temperature of the tires can be provided to set the first vehicle height H1 and the second vehicle height H2 to values suitable for each state.

[0056] The internal combustion engine of the power unit P can be selected from a gasoline engine, a diesel engine, a hydrogen engine, etc. The vehicle 1 can also be a hybrid vehicle that uses an electric motor in combination or an electric vehicle that uses only an electric motor as a power source. Further, in addition to an automatic transmission that uses a torque converter or a wet multi-plate clutch, the transmission can also be a continuously variable transmission that uses a V-belt, a dual-clutch transmission, or a stepped manual transmission.

[0057] The form of the vehicle, the shapes and structures of the accelerator pedal and the brake pedal, etc. are not limited to the above embodiments and can be variously changed. For example, in addition to minivans, SUVs, trucks, buses, etc., the vehicle can also be a single-seater racing car. Additionally, the braking operation member can be a brake lever, and the accelerator operation member can also be a rotary accelerator grip or a swing-type accelerator lever. The shift operation unit can be a shift switch, etc. in addition to the shift lever. The vehicle height adjustment control of the present invention can be applied to various vehicles such as two-wheelers and three-wheelers in addition to four-wheelers.

[0058] Reference numeral

[0059] 1 Vehicle

[0060] 3 Accelerator pedal (accelerator operation member)

[0061] 4 Brake pedal (braking operation member)

[0062] 20 Control unit

[0063] 21 Timer

[0064] H0 Standard vehicle height

[0065] H1 First vehicle height

[0066] H2 Second vehicle height

[0067] T1 Specified time

[0068] T2 Second specified time

[0069] P Power unit

[0070] SF, SR Vehicle height adjustment mechanism (front shock absorber, rear shock absorber)

Claims

1. A vehicle having a control unit that performs start control capable of a quick start, The vehicle is provided with a vehicle height adjustment mechanism, which is controlled by the aforementioned control unit to adjust the vehicle height of the aforementioned vehicle, When performing the aforementioned start control, the aforementioned control unit starts a first control, which is a vehicle height adjustment control for changing the aforementioned vehicle height from a standard vehicle height to a first vehicle height higher than the standard vehicle height, and then starts a second control, which is a vehicle height adjustment control for changing the aforementioned vehicle height from the aforementioned first vehicle height to a second vehicle height lower than the standard vehicle height.

2. The vehicle according to claim 1, wherein, A brake operating member for operating a braking device of the vehicle described above and an accelerator operating member for adjusting the output of a power source of the vehicle described above If, during the parking of the vehicle described above, the control unit repeatedly operates the brake operating member and the accelerator operating member described above, the operation mode of the power source is switched from the normal mode to a starting mode capable of performing the starting control described above, and the first control described above is started. When the brake operating member is released in the starting mode, the second control described above is started.

3. The vehicle according to claim 2, wherein, If a predetermined time elapses after the control unit switches the operation mode to the starting mode without releasing the brake operating member, the operation mode is switched from the starting mode to the normal mode, and the vehicle height is changed from the first vehicle height to the standard vehicle height.

4. The vehicle according to claim 2 or 3, wherein, If a second predetermined time elapses after the control unit starts the second control, the vehicle height is changed from the second vehicle height to the standard vehicle height.

5. The vehicle according to claim 1 or 2, wherein, The vehicle described above has front wheels and rear wheels The vehicle height adjustment mechanism is configured to be independently operable on the front wheel side and the rear wheel side The first vehicle height and the second vehicle height are different on the front wheel side and the rear wheel side 6. The vehicle according to claim 1 or 2, wherein, The vehicle described above has front wheels and rear wheels The vehicle height adjustment mechanism is configured to be independently operable on the front wheel side and the rear wheel side If the brake operating member is released, the control unit starts the second control for one of the front wheel side or the rear wheel side, and then starts the second control for the other of the front wheel side or the rear wheel side 7. The vehicle according to claim 1 or 2, wherein, The vehicle described above has front wheels and rear wheels, and the vehicle height adjustment mechanism is provided on at least one of the front wheel side or the rear wheel side 8. The vehicle according to claim 1 or 2, wherein, The vehicle height adjustment mechanism also serves as a shock absorber for supporting the wheels of the vehicle

Images