CN108099533B - IAHC intelligent electric control suspension system and vehicle - Google Patents
IAHC intelligent electric control suspension system and vehicle Download PDFInfo
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- CN108099533B CN108099533B CN201810073249.3A CN201810073249A CN108099533B CN 108099533 B CN108099533 B CN 108099533B CN 201810073249 A CN201810073249 A CN 201810073249A CN 108099533 B CN108099533 B CN 108099533B
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- 239000000725 suspension Substances 0.000 title claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 10
- 238000012423 maintenance Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 230000002045 lasting effect Effects 0.000 claims 3
- 238000000034 method Methods 0.000 claims 2
- 230000003068 static effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
- B60G17/0155—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit pneumatic unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides an IAHC intelligent electric control suspension system, belongs to the field of automobiles. Which is mounted on a vehicle, comprising: the air pump comprises a CAN bus, a pressure sensor, four height sensors, a knob switch, an ignition switch, an air storage tank, an inflating pump, an ECU, four air springs, an exhaust valve, a distribution valve and five electromagnetic valves, wherein the CAN bus, the four height sensors, the pressure sensor, the knob switch, the ignition switch, the five electromagnetic valves, the inflating pump and the exhaust valve are respectively in communication connection with the ECU; the four air springs are connected with the distribution valve through an air pipeline, the air storage tank is connected with the distribution valve through an air pipeline, the five solenoid valves are arranged on the air pipeline, the inflating pump is connected with the distributing valve, and the exhaust valve is connected to the inflating pump. Compared with the prior art, the intelligent automatic control system has the advantages of being high in automation degree and intelligent.
Description
Technical Field
The invention belongs to the field of automobiles, and particularly relates to a IAHC (Intelligent Automatic Height Control) intelligent electric control suspension system and a vehicle.
Background
The air suspension has the incomparable advantages of light weight, variable rigidity and the like, is rapidly accepted by wide consumers, the use rate of the air suspension system on a heavy truck is over eighty percent abroad, the air suspension system is adopted in high-speed buses and luxury city buses, and a plurality of cars are provided with the system. A high quality SUV is an optimal choice for achieving this objective, both in terms of car comfort and in terms of cross-country vehicle passing performance.
At present, most of the automobile suspensions in China adopt leaf spring suspensions, and of course, a plurality of host manufacturers start planning air suspension systems matched with part of automobile types, but all the air suspension systems are introduced abroad, and autonomous research and development are lacking in China; and the existing air suspension system has high cost and is not intelligent enough. In view of this, the invention provides an IAHC intelligent electric control suspension system and a vehicle.
Disclosure of Invention
In order to solve the problems, the invention provides an IAHC intelligent electric control suspension system and a vehicle, which have the advantages of high automation degree and more intelligence.
The invention is realized by the following technical scheme:
an IAHC intelligent electric control suspension system and a vehicle, which are installed on the vehicle, comprising: the air pump comprises a CAN bus, a pressure sensor, four height sensors, a knob switch, an ignition switch, an air storage tank, an inflating pump, an ECU, four air springs, an exhaust valve, a distribution valve and five electromagnetic valves, wherein the CAN bus, the four height sensors, the pressure sensor, the knob switch, the ignition switch, the five electromagnetic valves, the inflating pump and the exhaust valve are respectively in communication connection with the ECU; the four air springs are connected with the distribution valve through an air pipeline, the air storage tank is connected with the distribution valve through an air pipeline, the five electromagnetic valves are arranged on the air pipeline, the inflating pump is connected with the distribution valve, and the exhaust valve is connected with the inflating pump;
the CAN bus is connected with the ECU and is used for sending CAN signals to the ECU for processing;
the pressure sensor is arranged in the distribution valve and is used for collecting pressure signals in a public pipeline or an air spring or an air storage tank in the distribution valve in real time, converting the pressure signals into AD values and sending the AD values to the ECU for processing;
the four height sensors are arranged on a front axle and a rear axle of the vehicle and are used for collecting the height value of the vehicle body of the vehicle in real time and sending the height value to the ECU for processing;
the knob switch is connected with the ECU and used for receiving a height mode of a vehicle selected by a user, wherein the height mode of the vehicle comprises a high-level mode, a middle-level mode, a low-level mode and a maintenance mode;
the inflation pump and the exhaust valve are respectively connected with the ECU and are respectively used for receiving control commands of the ECU, and inflating the public pipeline in the distribution valve or discharging the gas in the public pipeline in the distribution valve so as to control the air pressure of the public pipeline in the distribution valve;
the five electromagnetic valves are used for being opened or closed according to related control commands of the ECU, so that air flows to the side with low air pressure from the side with high air pressure between a public pipeline in the distribution valve and the air storage tank as well as the air spring, and the air pressure in the air spring is adjusted to adjust the height of the vehicle body;
the ECU is used for judging whether the AD value is higher than a set high-pressure threshold value, if the AD value is higher than the set high-pressure threshold value, stopping the work of the air pump, opening the exhaust valve to release the pressure of a public pipeline in the distribution valve to a certain value, and then closing;
the ECU is also used for starting the inflating pump to work to inflate into a public pipeline in the distribution valve or opening an electromagnetic valve in an air pipeline of the air storage tank to inflate into the public pipeline in the distribution valve when the AD value is not higher than a set low-pressure threshold value, and stopping the inflating pump to work or closing the electromagnetic valve in a control pipeline of the air storage tank after the air pressure reaches a specified value;
the ECU is also used for receiving the height mode information of the vehicle selected by the user and adjusting the height of the vehicle according to the setting information of each height mode; the vehicle height control system CAN also be used for automatically switching different height modes according to the CAN information and adjusting the height of the vehicle according to different driving modes.
As a preferable technical scheme, the ECU is further configured to determine whether the vehicle body height value acquired in real time is higher than a first set value, if the vehicle body height value is not higher than the first set value, continuously determine whether the vehicle body height value is lower than a second set value, and if the vehicle body height value is not lower than the second set value, maintain the height of the vehicle body unchanged.
As an preferable technical scheme, the ECU is configured to receive vehicle speed information sent by the CAN bus, and the ECU adjusts the height of the vehicle body according to the vehicle speed.
As a preferable technical scheme, the ECU is used for receiving the geographic position information sent by the CAN bus, memorizing the height of the vehicle body in real time according to the geographic position information, and automatically adjusting the height of the vehicle body according to memorization when the vehicle passes through the position point again.
As a preferable technical scheme, the ECU is configured to receive a door opening signal sent by the CAN bus, and send a control command for prohibiting adjustment of the height of the vehicle body according to the door opening signal.
As a preferable technical scheme, the ECU is configured to receive a brake signal sent by the CAN bus, and send a control command for prohibiting height adjustment of the vehicle according to the brake signal.
A vehicle having the IAHC intelligent electronic control suspension system described above mounted thereon.
The beneficial effects are that:
according to the invention, the ECU controls the cooperative work of the inflating pump, the air storage tank, the distributing valve and the electromagnetic valve to inflate the air spring to realize the rising of the height of the vehicle body, and the cooperative work of the air discharging valve, the distributing valve and the electromagnetic valve discharges the air in the air spring to realize the falling of the height of the vehicle body, so that the vehicle body finally reaches the preset height; in addition, the ECU is connected with the CAN bus, and CAN adjust the height of the automobile body according to CAN signals such as automobile speed signals, steering wheel corner signals, door bump signals, braking signals and the like sent by the CAN bus, so that the degree of automation is good, the degree of intellectualization is high, and the safety performance of the automobile body is better.
Drawings
Fig. 1 is a schematic structural diagram of an IAHC intelligent electric control suspension system.
Detailed Description
For further disclosure of the technical scheme of the present invention, the following is a clear and complete description of the IAHC intelligent electric control suspension system and the vehicle with reference to the accompanying drawings.
The terms "upper", "inner", "middle", "left", "right" and "a" and the like are used herein for convenience of description, but are not intended to limit the scope of the present invention, and the relative changes or modifications thereof are described in the foregoing description without any substantial change in technical content.
Referring to fig. 1, the present invention provides an IAHC intelligent electric control suspension system 100, which is installed on a vehicle, and includes: the controller area network comprises a CAN bus 101, a pressure sensor 107, four height sensors 102, a knob switch 103, an ignition switch 104, a gas storage tank (not shown in the figure), an inflating pump 110, an ECU105, four air springs (not shown in the figure), an exhaust valve 109, a distribution valve 106 and five electromagnetic valves 108, wherein the CAN bus 101, the four height sensors 102, the pressure sensor 107, the knob switch 103, the ignition switch 104, the five electromagnetic valves 108, the inflating pump 110 and the exhaust valve 109 are respectively in communication connection with the ECU 105; the four air springs are connected with the distribution valve 106 through an air pipeline, the air storage tank is connected with the distribution valve 106 through an air pipeline, the five electromagnetic valves 108 are arranged on the air pipeline, the inflating pump 110 is connected with the distribution valve 106, and the exhaust valve 109 is connected with the inflating pump 110; specifically, among the five solenoid valves 108, four air spring air lines are a left front solenoid valve, a right front solenoid valve, a left rear solenoid valve, and a right rear solenoid valve; the air pipeline of the air storage tank is provided with an inflation electromagnetic valve.
The CAN bus 101 is connected with the ECU105 and is used for sending CAN signals to the ECU105 for processing; specifically, the CAN signals include a vehicle speed signal, a steering wheel angle signal, a door bump signal, a brake signal, and an accelerator signal, and the ECU105 sends out a corresponding control signal after receiving the signal sent by the CAN bus 101 and processing the signal.
The pressure sensor 107 is disposed in the distribution valve 106, and is configured to collect pressure signals in a public pipeline or an air spring or an air storage tank in the distribution valve 106 in real time, convert the pressure signals into an AD value, and send the AD value to the ECU105 for processing; specifically, the pressure sensor 107 detects a pressure signal in the public management in the distribution valve 106, when the pressure in the public pipeline is greater than 14bar, the system automatically opens the exhaust valve 109 to exhaust, and when the pressure in the public management is greater than 0.5bar, the system reminds a driver that the gas in the pipeline leaks, and the vehicle needs to be driven to a maintenance shop for detection; when the electromagnetic valve 108 in the air pipeline of the air storage tank is opened, and the air storage tank supplies air to the air spring, the detected pressure is the pressure of the air storage tank and is recorded in real time; when the inflating pump 110 supplies air to the air spring, the detected pressure is the pressure of the air spring, which is recorded in real time.
The four height sensors 102 are installed on a front axle and a rear axle of a vehicle, and are used for acquiring the height value of the vehicle body in real time and sending the height value to the ECU105 for processing; specifically, the four height sensors are a left front height sensor, a right front height sensor, a left rear height sensor and a right rear height sensor, the bad condition of the road can be identified according to the variation and duration of the height sensor 102, when the vehicle is identified to enter a bad road, the height of the vehicle body automatically rises, and after the system identifies the bad road, the vehicle body returns to the original height.
The knob switch 103 is connected with the ECU105 and is used for receiving a height mode of a vehicle selected by a user, wherein the height mode of the vehicle comprises a high-level mode, a middle-level mode, a low-level mode and a maintenance mode; the modes can be switched at any time by selecting the knob switch 103, and in addition, in the maintenance mode, the system is separated from the control of the height of the vehicle body, so that the maintenance personnel is prevented from being injured by the adjustment of the height of the vehicle body during maintenance. In the case of a switching of the three modes, the ECU105 charges the air spring by controlling the cooperative work of the inflating pump 110 and the distributing valve 106 to realize the rise of the height of the vehicle; on the contrary, the ECU105 discharges the air in the air spring by controlling the cooperative operation of the distribution valve 106 and the exhaust valve 109 to achieve the lowering of the vehicle body height, and finally, the vehicle body reaches the preset height.
When the vehicle body rises, the front axle rises successively, and then the front axle rises; when the vehicle body descends, the front axle descends, and the rear axle descends; when the system is adjusted, the air is inflated and then exhausted; the duration of operation of the inflation pump 110 does not exceed five minutes, the exhaust valve 109 is opened for no more than one minute.
The inflation pump 110 and the exhaust valve 109 are respectively connected with the ECU105, and are respectively used for receiving control commands of the ECU105, inflating the public pipeline in the distribution valve 106 or discharging the gas in the public pipeline in the distribution valve 106 so as to control the gas pressure of the public pipeline in the distribution valve 106;
the five electromagnetic valves 108 are used for opening or closing according to the related control command of the ECU105, so that air flows to the lower air pressure side between the public pipeline in the distribution valve 106 and the air storage tank as well as the air spring from the higher air pressure side, and the air pressure in the air spring is adjusted to adjust the height of the vehicle body;
the ECU105 is configured to determine whether the AD value is higher than a set high-pressure threshold, and if the AD value is higher than the set high-pressure threshold, stop the operation of the inflating pump 110, and open the exhaust valve 109 to release the pressure of the public pipeline in the distribution valve 106 to a certain value, and then close the public pipeline;
the ECU105 is further configured to start the inflating pump 110 to operate to inflate the common line in the distribution valve 106 or to open the electromagnetic valve 108 in the air line of the air tank to inflate the common line in the distribution valve 106 from the air tank when the AD value is not higher than a set low pressure threshold, in this embodiment, the air supply of the air tank itself is started only in the engine operation mode and the system is in an idle state, and stop the inflating pump 110 to operate or close the electromagnetic valve 108 in the air tank control line after the air pressure reaches a set value;
in the present embodiment, the high-voltage threshold or the low-voltage threshold set in advance may be customized by the user, or may be set uniformly by the manufacturer when the vehicle leaves the factory, and is not limited herein.
The ECU105 is further configured to receive height mode information of the vehicle selected by the user, and adjust the height of the vehicle according to the setting information of each height mode; the vehicle height control system CAN also be used for automatically switching different height modes according to the CAN information and adjusting the height of the vehicle according to different driving modes.
The ECU105 is further configured to determine whether the real-time collected height value of the vehicle body is higher than a first set value, if the height value of the vehicle body is not higher than the first set value, continuously determine whether the height value of the vehicle body is lower than a second set value, and if the height value of the vehicle body is not lower than the second set value, maintain the height of the vehicle body unchanged. In the present embodiment, the first setting value and the second setting value may be set by the user or may be fixed by the system, and are not limited herein.
The ECU105 is configured to receive the vehicle speed information sent by the CAN bus 101, and the ECU105 adjusts the height of the vehicle body according to the vehicle speed. Specifically, when the vehicle body is in a high position, the speed is greater than 40Km/h and the vehicle body is reduced to a middle position mode for 6s, and is lower than 35Km/h and is restored to the high position mode for 2 s; the speed is greater than 100Km/h and the vehicle body is reduced to a low-level mode for 6s, is lower than 80Km/h and is restored to a medium-level mode for 6s, is lower than 35Km/h and is restored to a high-level mode for 2 s; when the vehicle body is in the middle position mode, the speed is greater than 100Km/h and the vehicle body is continuously reduced to the low position mode for 6s, the vehicle body is lower than 80Km/h and continuously returned to the middle position mode for 6s, and the vehicle body is lower than 35Km/h and continuously returned to the middle position mode for 2 s; when the vehicle body is in the low-level mode, the height is kept unchanged at the speed lower than 35Km/h, and when the speed is higher than 35Km/h and the vehicle body is continuously restored to the neutral mode for 6s, when the speed is again greater than 100Km/h and the vehicle body is continuously reduced to the low-level mode for 6 seconds, the vehicle body is continuously reduced to the medium-level mode for 6 seconds after being reduced to 80Km/h, and when the speed is reduced to the low-level mode after being reduced to 10 Km/h.
The ECU105 is configured to receive the geographic position information sent by the CAN bus 101, store the height of the vehicle in real time according to the geographic position information, and when the vehicle passes through the position point again, the ECU105 automatically adjusts the height of the vehicle according to the storage. Specifically, the height of the vehicle body of a certain road section is memorized by the map position information sent from the CAN bus 101, and when the vehicle is driven to this position again, the vehicle body is automatically adjusted to the height at which the driver was switched at this position last time.
The ECU105 is configured to receive a door opening signal sent by the CAN bus 101, and the ECU105 sends a control command for prohibiting adjustment of the height of the vehicle body according to the door opening signal. Specifically, when any one of the four doors or the trunk lid is opened, the ECU105 suppresses adjustment of the vehicle body height.
The ECU105 is configured to receive a brake signal sent by the CAN bus 101, and the ECU105 sends a control command for prohibiting height adjustment of the vehicle according to the brake signal.
Static definition: the speed is less than 35Km/h, the static real-time adjustment control mode is carried out in a bridge control mode, namely, for a front axle, after the average value of the current height and the right front height exceeds a set value of 10mm and lasts for 2 seconds, the system starts to carry out height adjustment on the front axle, the rear axle is the same, the static adjustment is carried out to preferentially supply air to the air storage tank, when the air pressure of the air storage tank is less than 9bar, the air supply of the air storage tank is stopped, the air supply pump 110 is used for directly supplying air, and when the brake pedal is arranged below a brake pedal tower, the system stops adjusting the height of the vehicle body.
Dynamic definition: the speed is greater than or equal to 35Km/h, four wheels are independently adjusted, the adjustment period is 120s, when one scanning period is up, the system detects the values of the four height sensors 102, when the filtered values deviate from the set value by 8mm, the system performs air charging and discharging actions so as to restore the height of the vehicle body to the set value, and when the system needs air supply in a dynamic mode, the air pump 110 is started to directly supply air to the air spring; the air tank does not participate in control, and when a fault occurs during the running of the vehicle, the vehicle is kept running in a pre-fault state, and the ECU105 does not control the air spring to charge and discharge air. After the fault is removed, the system is electrified again, and the ECU105 is restored to be normal after the system is restored to be normal; dynamically, when the steering wheel angle is larger than 30 degrees or the accelerator pedal opening is larger than 60%, the system stops adjusting the height of the vehicle body; dynamically, the system stops adjusting the height of the vehicle body when the brake pedal is depressed.
After the vehicle is started, the system firstly performs self-checking after the ignition switch 104 of the vehicle is turned on, after the self-checking is free from problems, the system enters a height mode before the engine is turned off last time or defaults to the middle position, the system monitors height signals of the 4 height sensors 102, if a certain signal deviates from a static tolerance of the set height mode, the system automatically inflates or exhausts, when the system inflates, the air storage tank firstly supplies air, the air storage tank is insufficient in air supply, and then the inflation pump 110 starts to control the height of the vehicle.
Dormancy and awakening: after the vehicle ignition development is turned off, the ECU105 continues to work to control the height of the vehicle body, only the vehicle body is not charged at the moment, and enters a dormant state after being stationary for 2 minutes, the height of the vehicle body is not regulated during dormant, and the wake-up condition is that the ignition switch 104 is ON.
A vehicle having the IAHC intelligent electrically controlled suspension system 100 described above mounted thereto.
According to the invention, the ECU105 controls the cooperative work of the inflating pump 110, the air storage tank, the distributing valve 106 and the electromagnetic valve 108 to inflate the air spring to increase the height of the vehicle body, and the cooperative work of the air discharging valve 109, the distributing valve 106 and the electromagnetic valve 108 discharges the air in the air spring to reduce the height of the vehicle body, so that the vehicle body reaches the preset height; in addition, the ECU105 is connected with the CAN bus 101, and CAN adjust the height of the vehicle body according to CAN signals such as a vehicle speed signal, a steering wheel angle signal, a door bump signal, a brake signal and the like sent by the CAN bus 101, so that the degree of automation is good, the degree of intelligence is high, and further the safety performance of the vehicle body is better.
The present invention is not limited to the above-described embodiments, but, if various modifications or variations of the present invention are not departing from the spirit and scope of the present invention, the present invention also includes such modifications and variations provided they fall within the scope of the claims and the equivalents thereof.
Claims (6)
1. An IAHC intelligent electric control suspension system is installed on a vehicle and is characterized in that: comprising the following steps: the air pump comprises a CAN bus, a pressure sensor, four height sensors, a knob switch, an ignition switch, an air storage tank, an inflating pump, an ECU, four air springs, an exhaust valve, a distribution valve and five electromagnetic valves, wherein the CAN bus, the four height sensors, the pressure sensor, the knob switch, the ignition switch, the five electromagnetic valves, the inflating pump and the exhaust valve are respectively in communication connection with the ECU; the four air springs are connected with the distribution valve through an air pipeline, the air storage tank is connected with the distribution valve through an air pipeline, the five electromagnetic valves are arranged on the air pipeline, the inflating pump is connected with the distribution valve, and the exhaust valve is connected with the inflating pump;
the CAN bus is connected with the ECU and is used for sending CAN signals to the ECU for processing;
the pressure sensor is arranged in the distribution valve and is used for collecting pressure signals in a public pipeline or an air spring or an air storage tank in the distribution valve in real time, converting the pressure signals into AD values and sending the AD values to the ECU for processing;
the four height sensors are arranged on a front axle and a rear axle of the vehicle and are used for collecting the height value of the vehicle body of the vehicle in real time and sending the height value to the ECU for processing;
the knob switch is connected with the ECU and used for receiving a height mode of a vehicle selected by a user, wherein the height mode of the vehicle comprises a high-level mode, a middle-level mode, a low-level mode and a maintenance mode;
the inflation pump and the exhaust valve are respectively connected with the ECU and are respectively used for receiving control commands of the ECU, and inflating the public pipeline in the distribution valve or discharging the gas in the public pipeline in the distribution valve so as to control the air pressure of the public pipeline in the distribution valve;
the five electromagnetic valves are used for being opened or closed according to related control commands of the ECU, so that air flows to the side with low air pressure from the side with high air pressure between a public pipeline in the distribution valve and the air storage tank as well as the air spring, and the air pressure in the air spring is adjusted to adjust the height of the vehicle body;
the ECU is used for judging whether the AD value is higher than a set high-pressure threshold value, if the AD value is higher than the set high-pressure threshold value, stopping the work of the air pump, opening the exhaust valve to release the pressure of a public pipeline in the distribution valve to a certain value, and then closing;
the ECU is also used for starting the inflating pump to work to inflate into a public pipeline in the distribution valve or opening an electromagnetic valve in an air pipeline of the air storage tank to inflate into the public pipeline in the distribution valve when the AD value is not higher than a set low-pressure threshold value, and stopping the inflating pump to work or closing the electromagnetic valve in a control pipeline of the air storage tank after the air pressure reaches a specified value;
the ECU is also used for receiving the height mode information of the vehicle selected by the user and adjusting the height of the vehicle according to the setting information of each height mode; the device CAN also be used for automatically switching different height modes according to the CAN information and adjusting the height of the vehicle according to different driving modes;
the ECU is used for receiving CAN the vehicle speed information sent by the bus, ECU pairs according to the vehicle speed the height of the car body is adjusted;
when the vehicle body is in a high position, the speed is greater than 40Km/h and the vehicle body is continuously reduced to a middle position mode for 6s, and is lower than 35Km/h and is continuously restored to the high position mode for 2 s; the speed is greater than 100Km/h and the vehicle body is reduced to a low-level mode for 6s, is lower than 80Km/h and is restored to a medium-level mode for 6s, is lower than 35Km/h and is restored to a high-level mode for 2 s; when the vehicle body is in the middle position mode, the speed is greater than 100Km/h and the vehicle body is continuously reduced to the low position mode for 6s, the vehicle body is lower than 80Km/h and continuously returned to the middle position mode for 6s, and the vehicle body is lower than 35Km/h and continuously returned to the middle position mode for 2 s; when the vehicle body is in the low-level mode, the height is kept unchanged at the speed lower than 35Km/h, the vehicle body is restored to the middle-level mode when the speed is higher than 35Km/h and lasting for 6s, the vehicle body is lowered to the low-level mode when the speed is again higher than 100Km/h and lasting for 6s, the vehicle body is restored to the middle-level mode when the speed is lower than 80Km/h and lasting for 6s, and the vehicle body is restored to the high-level mode when the speed is lower than 10 Km/h.
2. The IAHC intelligent electronic control suspension system of claim 1, wherein: the ECU is also used for judging whether the real-time collected height value of the vehicle body is higher than a first set value, if the height value of the vehicle body is not higher than the first set value, continuously judging whether the height value of the vehicle body is lower than a second set value, and if the height value of the vehicle body is not lower than the second set value, maintaining the height of the vehicle body unchanged.
3. The IAHC intelligent electrically controlled suspension system of claim 1, the method is characterized in that: the ECU is used for receiving the geographic position information sent by the CAN bus and memorizing the height of the vehicle in real time according to the geographic position information, when the vehicle passes the position point again, the ECU automatically adjusts the height of the vehicle body according to the memory.
4. The IAHC intelligent electrically controlled suspension system of claim 1, the method is characterized in that: the ECU is used for receiving a vehicle door opening signal sent by the CAN bus, and sending a control command for prohibiting height adjustment of the vehicle body according to the vehicle door opening signal.
5. The IAHC intelligent electronic control suspension system of claim 1, wherein: the ECU is used for receiving the brake signal sent by the CAN bus, and sending a control command for prohibiting the height adjustment of the vehicle body according to the brake signal.
6. A vehicle, characterized in that the IAHC intelligent electric control suspension system as claimed in any one of the claims 1-5 is mounted on the vehicle.
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| CN201810073249.3A CN108099533B (en) | 2018-01-25 | 2018-01-25 | IAHC intelligent electric control suspension system and vehicle |
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| CN201810073249.3A CN108099533B (en) | 2018-01-25 | 2018-01-25 | IAHC intelligent electric control suspension system and vehicle |
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| CN108099533B true CN108099533B (en) | 2023-12-29 |
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|---|---|---|---|---|
| CN110654195B (en) * | 2018-06-29 | 2021-12-07 | 比亚迪股份有限公司 | Vehicle, vehicle suspension system and adjusting method and device thereof |
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