1420 results about "Car passenger" patented technology

The invention discloses an automobile rollover prevention system based on driver input prediction and a control strategy. The vehicle rollover prevention system comprises a sensor module, a steering wheel rotating angle estimation unit, a front wheel differential brake module, a rollover evaluation unit and a controller ECU. According to the automobile rollover prevention system and the control strategy, a steering wheel input value of a vehicle model is predicted on line through a grey prediction model, a predictable automobile rollover evaluation index is proposed based on the steering wheel input value, an estimation model of the lateral-load transfer rate (LTR) of a passenger car is built, and when the LTR estimation value of the vehicle reaches a rollover threshold value, rollover prevention control is conducted through the front wheel differential brake module, and the influence of time lag of a control system on rollover judgment is avoided.

An aftermarket custom engineered deep lip wheel cover in any design, that mates with a custom engineered aftermarket metal wheel that fits most passenger cars, light trucks, and SUV, or golf cart type vehicles. A painted metal wheel custom engineered to jointly except a custom engineered deep lip ABS plastic wheel cover. The wheel cover is designed and contoured to fit exclusively on to the custom engineered metal wheel using a plastic cap, screws, molded attachment clips, magnets, and a special bead system on the lip portion of the wheel cover.

A pneumatic radial tire for passenger car has a directional tread pattern comprising many blocks formed in a tread portion by a plurality of circumferential grooves extending in a circumferential direction of the tire and a plurality of directional slant grooves obliquely extending with respect to the circumferential direction, wherein at least a part of the directional slant grooves is branched from the circumferential groove near to the pattern center and extends toward and is opened at an end of a ground contact region of the tread, and at least a part of corner portions of each of the blocks forms an acute angle of 10-60° defined by the circumferential groove and the directional slant groove; and a surface of the corner portion of the block having an acute angle of 10-60° is beveled over a distance of 10-30 mm from a tapered end thereof in a longitudinal direction so as to gradually shallow from the tapered end toward a width widened portion of the block in both stepping-in and kicking-out sides of the block.

The invention discloses a passenger car anti-rollover control system based on an electronic control air suspension and an electronic control brake system. According to the system, the passenger car rollover risk is predicted according to the running state of a passenger car, when it is monitored that the rollover risk of the passenger car is about to happen, the system warns a driver through a buzzer and an alarm indicator lamp, the air inlet an exhaust states of air springs for connecting the passenger car body and the left and right sides of an axle are adjusted in time, and the passenger car outer suspension rigidity is improved; meanwhile, by adjusting the vertical load distribution between wheels again, vertical loads on the brake wheel are increased, the system can apply sufficient brake torque through a differential brake method, and the phenomenon that the brake wheel is locked or the wheel brake force is not sufficient during braking is avoided. The system can adopts an existing electronic control air suspension and the brake system of the passenger car, rollover control over the passenger car can be effectively achieved in a coordinated control mode of the suspension system and the brake system, the passenger car anti-rollover performance is improved, the passenger car rollover accident occurrence rate is lowered, and the control algorithm is convenient to transplant.

Provided is a friction material composition, comprising a binder, fibrous base materials, an abrasive material, an inorganic filler, and an organic filler. The composition further contains a specific amount of zinc. The fibrous base materials include a specific amount of at least one fibrous base material selected from cellulose fibers and fire-resistant fibers and a specific amount of iron-based fibers as another fibrous base material. The composition contains 1 wt.% or less inorganic abrasive material having a Mohs hardness of 8 or higher and a particle diameter of 1 [mu]m or larger as the abrasive material. This friction material composition gives a brake pad for passenger cars which less attacks mating materials than conventional products, has a high coefficient of friction during braking when repeatedly used for braking in high-speed traveling, and can be inhibited from wearing or unevenly wearing. Also provided are a friction material and a friction member both obtained from the composition.

The invention belongs to urban railway system vocation education equipment which can realize multi-type failure simulation of a metro passenger car door system and bidirectional communication linkage based on analog simulation software. The analog simulation software can set a failure to an experiment table and also can collect the state of the experiment table to realize structural dismounting, a work principle and an overhauling flow in a three-dimensional manner. The method and the device disclosed by the invention can be used for realizing practical training, checking and scientific researches of the metro passenger car door system. The whole device comprises six parts including a passenger car door assembly experiment table, an integrated array type control and collecting module, an embedded type handheld failure simulation terminal, a handheld failure setting device, a connecting wire, a data conversion connector, a main control computer, and analog simulation and control software. The type of simulated failures comprises an EDCU (Electronic Door Control Unit) failure, short circuit, open circuit, earth connection, deadlock, an intermittent failure, device damages, signal interference and the like. The method and the device can be used for researching a car door clamping force, a bypath door control line and the like.

The invention discloses a construction method of a network-intensive type mini-passenger car travel demand thermodynamic diagram. The method comprises: the system is open to all registered users; division is carried out by using a traffic zone as an area dividing means; color marking is carried out on areas of the traffic zone and color filling is completed; a pie chart of the statistics is used as a marking way for a network-intensive type mini-passenger car travel demand thermodynamic diagram of the traffic zone; and for a network-intensive type mini-passenger car travel demand thermodynamic diagram facing the arrival demand, only a correspondence relation needs to be adjusted, marking is carried out based on the arrival demand thermodynamic diagram and the pie chart of the correspondence relation is screened to express the arrival demand thermodynamic diagram of the traffic zone, thereby forming a network-intensive type mini-passenger car travel demand thermodynamic diagram facing the arrival demand. With the construction method, according to actual demands, different demand objects can be selected to use the network-intensive type mini-passenger car travel demand thermodynamic diagram to analyze the passenger demands so as to transport capacity allocation reasonably, thereby realizing transport capacity balancing and guaranteeing satisfaction of the travel demands of citizens.

The invention discloses a passenger car driving data recording device and a method for accident analysis by using the device. 13 types of sensors and switches such as a steering wheel rotary angle sensor, a retarder gear switch and an XYZ three-axis acceleration sensor are installed at the passenger car; exact time when an accident occurs is recorded by using a real-time clock, and various data collected is stored by a Flash memory. Simultaneously, the device carries out data transmission and communication by various interfaces including CAN bus, and an iButton interface is used for identifying the identity of a driver; the whole device finishes signal acquisition, processing and storage by an ECU processor and a peripheral modulate circuit. Matched software can completely show the operation actions of the driver and the working conditions of the passenger car in the driving process so as to carry out accident analysis for the passenger car having accidents and restore actual conditions in the process of accident, thereby providing original reference data as efficient auxiliary decision support of claim settlement for accident recording and discrimination, doubtful points analysis of accident and responsible party confirmation of accident.

A pneumatic radial tire for passenger car has a directional tread pattern (with respect to a rotating direction of tire) defined by a circumferential center groove, a plurality of directional slant grooves disposed at intervals in the circumferential direction of the tire, and a plurality of blocks formed at intervals in both circumferential and axial directions of the tire, in which these blocks form a pair of central block rows and a pair of side block rows, and surfaces of acute corner portions of blocks constituting the central block row and the side block row located outward and inward in the axial direction of the tire at given length, and chamfered acute corner portions of blocks constituting the central block row and the side block row are connected to each other at their chamfered shallowest tips.

The invention discloses a white car body static stiffness restriction device of a passenger car and a static stiffness detection method. The device is characterized in that: one side of a front bearing support is provided with a pressure transducer and a hydraulic jack, a plurality of displacement sensors are arranged at the periphery of the white car body bottom surface; the front bearing support comprises a front rack, a T-shaped rack, and a I-shaped guide rail, wherein, the end portion of the front rack is connected with the very center of a crossbeam of the T-shaped rack through bolts and nuts, the crossbeam of the T-shaped rack is arranged at the left and right side of the white car body, and the lower side of the crossbeam is provided with the hydraulic jack; the bottom of the T-shaped rack is connected with the bottom of the front rack through a pin roll and a split pin; the upper surface of the crossbeam of the T-shaped rack is symmetrically provided with I-shaped guide rails; a torque value of the applied load is divided by a twisting angle to calculate a twisting stiffness, and the actual value of the load is divided by a car body deformation displacement to obtain a bending stiffness. According to the invention, the efficiency of various vehicle tests is increased, and the device cost is obviously reduced on the premise that the test accuracy is guaranteed.

The invention discloses a plug door for a passenger car, relates to a door for a passenger car, and in particular relates to the plug door for the passenger car, which comprises a fixed frame (1), a movable frame (2), a plug switching mechanism (3), a tumbler linkage mechanism (4), a drive mechanism (5) and a door sheet (6). The plug movement of the door sheet (6) of the passenger car is completed through the plug switching mechanism (3), the tumbler linkage mechanism (4) and the drive mechanism (5). The plug door can be arranged on the passenger car, is sealed, is stable and reliable in movement, and can move in a reciprocating way.

This invention relates to a tire suitable in a passenger car, particularly a tire being high in the resistance to hydroplaning on a wet road surface and low in the tire noise and having an asymmetric tread pattern. In such a tread pattern that at least two circumferential grooves extending along an equatorial plane of the tire are formed in a region of a tread surface at an axially inner side with respect to the equatorial plane in the mounting on the vehicle and at least one circumferential groove is formed in a region at an axially outer side thereof, a circumferential groove nearest to the equatorial plane of the tire among the circumferential grooves arranged in the axially inner side region has a width wider by 20% or more than an average groove width of the tire and a circumferential groove arranged toward a side of a tread end at the axially inner side region has a width corresponding to 90-110% of the average groove width, and the circumferential groove nearest to the equatorial plane of the tire at the axially outer side region has a width narrower by 10% or more than the average groove width, whereby the resistance to hydroplaning and the controllability of tire noise, which have a conflicting relation in the prior art, are established in a higher level.

The invention relates to an early warning and monitoring device of mobile stench pollution. The device is composed of an on-line stench monitoring device, a stench wireless acquisition device, a stench ingredient detection device, a vehicle-mounted power supply device and a vehicle-mounted computer control center. Shockproof measures are adopted to protect instruments. The early warning and monitoring device is installed in a passenger car, the passenger car can be driven to a site of accident at any time to detect stench pollution and the early warning and monitoring device can also be arranged at the position of a factory boundary of a stench pollution source with potential pollution capacity to perform real-time monitoring on the stench pollution and perform early warning on the stench pollution. The early warning and monitoring device achieves real-time monitoring of stench pollution, tracking and recognition of possible sources or devices of stench pollutants and prediction of variation trend and pollution scope of the stench pollution, provides a corresponding contingency plan, supplies scientific support for rapid and efficient emergency measures of environmental management departments, and improves emergency disposal efficiency of stench pollution accidents.

The invention belongs to the technical field of composite materials, and discloses a passenger car floor of a sandwich structure. The passenger car floor of the sandwich structure is provided with a surface layer (2), a core layer (1) and a surface layer (2) which are arranged from top to bottom; the surface layer (2) is a glass fiber fabric reinforced resin-based composite material layer with the thickness of 0.5-2.5mm and the density of 1800-2200kg / m<3>; the core layer (1) is formed by combining a reinforcement formed by a fiber, or a fiber fabric, or a compound of the fiber and the fiber fabric, and a base body which is hard polyester foam obtained by foaming polyethylene resin; the core layer (1) has the thickness of 7-20mm, and the density of 200-500kg / m<3>. The passenger car floor has sufficient mechanical performance, installation reliability and excellent medium resistance, the pressing resistance and light weight of the passenger car floor are guaranteed, and meanwhile the effects of temperature preservation, sound insulation and noise reduction are achieved.

The invention provides an elevator car passenger detection system. A camera for collecting videos in a car in real time is arranged in the elevator car. The detection system comprises an image processing unit, a background updating unit and a judgment unit, wherein the image processing unit is used for obtaining brightness information of each pixel point in each image frame in the videos shot by the camera; the background updating unit is used for obtaining and updating a background image by comparing brightness differences of corresponding pixel points in two adjacent image frames; the judgment unit is used for determining that no person is in the elevator car when the brightness difference of a current image frame and a pixel point of the background image is smaller than a first threshold value, and determining that a person is in the elevator car when the brightness difference of the current image frame and the pixel point of the background image is not smaller than the first threshold value. The invention further provides a corresponding method. The image frames of the on-site videos collected by the original camera in the elevator car are compared with the background image, and accordingly whether the person is in the car can be judged, extra detection devices do not need to be increased, and whether the person is in the car can be accurately judged.

The invention discloses a production method of a warp knitting raising interior decorative material of an automobile, comprising the steps of selecting raw material, performing warping, weaving, dyeing and pre-shaping; napping, performing shaping and bonding; bonding a napped fabric and an automobile interior decorative plate by glue. The fabric has size stability, elasticity, softness and wearing resistance; the raising fabric has light weight and then satisfies light requirement of the whole vehicle; the raising surface of the raising warp knitting fabric replaces a non-woven cloth or a sponge in the automobile interior composite fabric, thus, the compounding process of the warp knitting fabric or the non-woven cloth or sponge is saved, the whole process flow for processing the automobile interior decorative material is simplified, the energy consumption is reduced, the harmful gas volatilization during the process is reduced, the molded fabric bonded with the automobile interior decorative plate does not wrinkle, the problems that the automobile interior decorative composite fabric is easy to wrinkle during the bonding and the fabric and the sponge or the non-woven cloth are easy to separate during the usage for a long period are solved; the warp knitting raising interior decorative material is suitable for ceilings, skylight interior decorative plates and upper cover plates of a trunk of a passenger car.

The invention discloses an automatic driving system based on 5G vehicle-road cooperation. The system comprises: an automatic driving system used for obtaining vehicle attitude information, vehicle sensing environment information and a driving intention through a plurality of sensors disposed on a vehicle body, carrying out interaction with a roadside system and a cloud platform, and controlling the operation of the vehicle; the roadside system comprising a sensor group, an edge calculation unit and a roadside unit, wherein the sensor group is used for acquiring road information and meteorological data of a local scene, the edge calculation unit is used for receiving and processing the sensing data of sensors and acquiring map information and road condition information of the local scene, and the roadside unit is used for uploading the map information and the road condition information, and issuing a business task and a cooperative scheduling instruction to the automatic driving system; and the cloud platform used for globally carrying out decision planning on the road and vehicle operation in the local scene. According to the invention, automatic driving is reliably realized, and the dependence of the passenger car on a high-precision sensor is effectively reduced.

The invention discloses a skylight sun shield for a passenger car and a production technique thereof, and belongs to the technical field of design and production for decoration products inside the passenger car. The skylight sun shield consists of a basal plate and a decorative cladding compounded on the external surface of the basal plate, the basal plate uses 3 to 30 millimeters of honeycomb paper as a framework, and a layer of polyurethane reinforced by 200 to 800 g / m<2> of glass fiber felt is pressed on the upper surface and the lower surface of the framework; and the production technique comprises three steps in turn, namely forming of the basal plate, compounding of the cladding, and manufacturing of a finished product. The skylight sun shield has the characteristics of light weight, elegant appearance, stable performance, safety and environmental protection, and the like, and is suitable for medium and high-grade passenger cars.

The invention discloses a single-column movable lifting machine for a car. A lifting arm, a main lifting nut, a lead screw and a motor are arranged on a stand column, the lifting arm is arranged on the main lifting nut in a sitting mode, the main lifting nut is screwed on the lead screw, the upper end of the lead screw is sleeved with a lead screw belt wheel, a motor shaft of the motor is sleeved with a motor shaft belt wheel, and the lead screw belt wheel and the motor shaft belt wheel are connected through a belt. Through the single-column movable lifting machine, the area of the occupied workplace is reduced, and the lifting machine can be fixed to the ground without an expansion bolt. The lower end of the stand column is provided with a manual pallet jack, and one machine achieves multiple purposes. When the lifted car waits for the next procedure, the ifting machine can retreat and move to the work position of another car to be repaired for lifting work. Due to the fact that the lifting machine is simple in structure and convenient to move, the use requirement of a rapid car repair shop is met. The lifting machine can be used as parking equipment of a household garage, a small passenger car is lifted by more than 1.6 m to 1.8 m, a second car can be parked below the small passenger car, space is saved, the structure is simple, and the lifting machine is very practical.

The invention relates to a front independent suspension mechanism of a vehicle, in particular to a front axle independent suspension mechanism mainly used on a commercial vehicle such as lorry and passenger car. In the mechanism, one, two or mainly leaf springs are used in place of an elastic element of the conventional independent suspension such as spiral spring independent suspension or torsion bar independent suspension, plate-end sliding blocks are used to connect a common independent suspension and leaf springs together perfectly, structures such as I-beam are not used, parts such as leaf springs are hidden in a cross beam of a secondary vehicle frame, and the advantages of the common independent suspension and the advantages of the leaf spring suspension are fully combined. In the mechanism, the loading capacity is high with many elastic elements are used, and the difference between equivalent averages of idle-load comfort and load comfort is small; and compared with the conventional axle load commercial vehicle, the commercial vehicle using the mechanism is more comfortable, takes up a smaller space and is lower in cost.

The invention discloses a bogie for a passenger car. The bogie comprises a framework system, a wheel set axle box system, a primary suspension positioning system, a secondary suspension system, a central traction device and a basic braking system, wherein the primary suspension positioning system adopts rocker arm type positioning; a positioning rocker arm is fixedly connected with the wheel set axle box system through a clamping band; one end of a vertical shock absorber of the positioning rocker arm is connected with the positioning rocker arm; the other end of the vertical shock absorber is connected with a shock absorber support of the framework system; and split type elastic nodes are installed in node holes of the positioning rocker arm and connected with a node support installed in the framework system through tapered pins and connection bolts. According to the bogie for the passenger car, optimal configuration of the bogie structure and the suspension positioning damping system is carried out, so that the bogie is stable in performance, simple and reliable in structure, light in weight and low in cost, can meet the requirements for high speed and heavy load, and can also guarantee excellent stability, safety and comfort of the bogie during high-speed operation.

The invention discloses a hot-rolled high-strength sheet steel having a tensile strength of 510MPa, and a production method thereof. The steel comprises 0.05-0.09wt% of C, 0.10-0.30wt% of Si, 0.70-1.50wt% of Mn, 0.025wt% or less of P, 0.012wt% or less of S, 0.015-0.040wt% of Ti, 0.01-0.03wt% of Als, and the balance Fe and inevitable impurities. The production method of the sheet steel comprises the following steps: desulfurizing molten iron, carrying out converter smelting, and alloying; carrying out ladle furnace treatment, and feeding Si-Ca wires during the treatment; carrying out continuous casting and rolling; tapping off the above obtained casted blank, and carrying out high pressure water dephosphorization; carrying out seven-stage rolling; carrying out laminar cooling; reeling; pickling; flattening; and finishing. The steel has stable performances, a high dimension precision and a good elongation rate, can be used in automobile structure and safety members comprising passenger car chassis, various reinforcing plates and the like, and reduces the automobile production cost, and the production method of the steel has a low production cost and good industrial production adaptability.

The embodiment of the invention discloses a method and device for accurately automatically identifying a driver unsafe behavior based on a convolutional neural network, and relates to the fields of image recognition, pattern recognition and automation. In the case of the problem of unsafe behavior detection of important cargo transportation or the driver of a passenger car, the method of DriverBeCog is provided; the method comprises the steps of using a capsule neural network and the convolutional neural network to extract real-time image characteristics of the driver; respectively performingtwo classifications on various behaviors in parallel; using a monitoring device back screen for real-time monitoring, issuing a warning for the unsafe behavior, and recording relevant information intoa database. The method adopts multiple models concurrent processing, and proposes the convolutional neural network model with few network layers, few parameters, small calculation amount and easy practicality; the recognition rate of the unsafe behavior exceeds existing achievements, which is beneficial to practical use; a weight parameter adjustment method solves the problem that a positive andnegative data volume gap is too large.

The invention discloses a multi-axle distributed driving pure electric vehicle seriation platform. The platform is a distributed multi-purpose pure electric vehicle seriation common platform composed of at least two double-motor driving axles and can be used for pure electric trucks, passenger cars and self-propelled trailers. The distributed driving chassis platform is composed of multiple double-motor driving axles. Transmission ratios of axles on the driving axles can be different, transmission switching control is conducted through a whole vehicle controller and a motor controller, optimizing control is conducted according to the requirements on resistance of various road surfaces and the driving speed, and the work efficiency of motors can be fully exerted. Multiple sets of motors, battery packs and controllers are dispersed and parallelly used, the safety of a power supply can be improved, and the system cost can be reduced.

The invention discloses a failure control method for an electric drive system of a four-wheel distributed drive passenger car. The failure control method comprises the following steps: selecting a vehicle to enter a two-wheel drive mode or a parking mode according to a failure mode of the electric drive system; performing motor torque distribution on a non-failure motor when entering the two-wheel drive mode; calculating ideal yaw velocity under different conditions according to the reference ideal insufficient steering degree US; calculating an ideal side slip angle by combining an integralestimation method and a side slip angle upper limit empirical formula; using a fuzzy control algorithm, using errors of the yaw velocity and the side slip angle as input variables to calculate additional yaw moment; carrying out offline calculation to obtain output torque MAP graphs of the vehicle under different accelerators and vehicle speeds, and according to the operation intention of a driver, carrying out interpolation on the accelerator pedal opening degree and the current vehicle speed to obtain expected longitudinal driving torque; and based on a double-track two-degree-of-freedom nonlinear vehicle model, performing motor torque distribution on the non-failure motor in combination with the additional yawing torque and the expected longitudinal driving torque.

This invention puts forward a communication protocol suitable for pure electromotive passenger trains based on CAN2.0B and J 1939 related specifications, among which, it assigns new address, selects the assigned addresses in original SAEJ 1939 definition for the motor controller, electronic joint air gate controller, cabin display, ABS controller and power battery management system. The information contained in the parameter set and data field of entire car controller, motor controller, speed variator and battery management system of pure electromotive cars is re-defined in detail.

The invention discloses a V2X-based formation driving intelligent networked passenger car, which comprises a sensing and positioning device, a V2X information interconnection system and a chassis domain controller which are connected with an automatic driving domain controller, wherein the automatic driving domain controller decides a formation driving state according to collected multi-source information and outputs a target speed and acceleration of path tracking, the sensing and positioning device comprises an environment sensing unit and a positioning and navigation unit, the V2X information interconnection system broadcasts passenger car state information to other formation vehicles, and the chassis domain controller is used for path tracking control of the networked passenger car, drives an electronic accelerator to perform acceleration control through a CAN bus, performs deceleration control through motor braking and service braking, and sends an advancing command request of going straight, turning left or turning right to the steering motor controller through the CAN bus. According to the invention, formation driving cooperative control of multiple passenger cars can be achieved, dual-redundancy design is adopted in chassis domain controller hardware, and the stability, safety and reliability of formation driving are improved.

The invention provides a composite sound insulation high-resilience automobile main carpet anti-vibration pad which comprises two horizontally laid sound absorbing layers and two vertically laid high-elasticity layers, wherein the sound absorbing layers and the high-elasticity layers are compounded into a whole in a staggered way; each sound absorbing layer has the square gram weight of 400-600g / m<2>, and each high-elasticity layer has the square gram weight of 1100-1300g / m<2>. The invention also provides a preparation method of the product. According to the automobile main carpet anti-vibration pad, the two horizontally laid sound absorbing layers and the two vertically laid high-elasticity layers are adopted, and the sound absorbing layers and the high-elasticity layers are compounded into a whole in a staggered way, so that the product is good in sound absorbing property and elastic recovery; furthermore, recycle cotton and a polyurethane (PU) foaming technology are not used, so that volatile organic compounds (VOC) are not produced, and the product is in accordance with the in-car air quality requirement of a passenger car in China and is non-toxic.

The invention relates to a self-adaptive riding space adjusting system and an adjusting method, and belongs to the technical field of passenger car seat intelligent control. The system comprises: a vehicle body sensor which is located on the side wall or door of the vehicle body, and sends a boarding instruction to a trip computer when the vehicle body sensor detects that the occupant is approaching the vehicle; an image acquisition unit which is located on a vehicle body side or a vehicle door and used for acquiring passenger image information; a co-driver seat which is provided with an electric adjusting mechanism; and a trip computer which is used for receiving a getting-on instruction of the vehicle body sensor and triggering the image obtaining unit to obtain passenger image information. The trip computer obtains a passenger height parameter H through processing according to the passenger image information and obtains corresponding X-direction riding space information according to the passenger height parameter H; and the electric adjusting mechanism adjusts the co-driver seat to a set position according to the X-direction riding space information. The intelligent degree of the vehicle is greatly improved, the intelligent development trend is met, and the product competitiveness can be greatly improved.

The invention relates to a passenger car braking pipeline system for a cold region. The passenger car braking pipeline system for the cold region comprises an air compressor, a dehumidification air cylinder, a condenser, a drying device and a four-circuit valve, wherein the air compressor, the dehumidification air cylinder, the condenser, the drying device and the four-circuit valve are connected in sequence through pipelines. The type of the four-circuit valve is WABCO9347140100, and an outlet of the drying device is connected with an opening 1 of the four-circuit valve. An opening 21, an opening 22, an opening 23 and an opening 24 of the four-circuit valve are connected with a rear braking air cylinder in a rear braking pipeline system, a front braking air cylinder in a front braking pipeline system, a hand braking air cylinder in a hand braking pipeline system, and an auxiliary air cylinder in an auxiliary air system respectively; the air compressor is a double-cylinder water-cooling type air compressor, and an electric heater is arranged on the drying device.