51results about How to "Improve NVH performance" patented technology

The application provides an automobile engine compartment drainage air intake system and a vehicle, and belongs to the technical field of automobile parts, wherein the automobile engine compartment drainage air intake system comprises a ventilation cover plate, an air chamber, a left drainage groove structure and a right drainage groove structure; the middle part of the top plate of the air chamber is concave downward, and an accommodation space extending along the length direction of the air chamber is formed between the top plate and the ventilation cover plate; the left drainage groove structure is arranged below the ventilation cover plate; the right drainage groove structure comprises a drainage groove body, the drainage groove body is arranged in the accommodation space, and the opening of the drainage groove body is communicated with the water inlet. The automobile engine compartment drainage air intake system provided by the application correspondingly sets the drainage groove structure as the left drainage groove structure and the right drainage groove structure; two drainage groove structures are used for drainage respectively, so that the drainage groove structure does not span the width direction of the vehicle body, the space occupation area of the drainage groove is smaller, the size of the engine compartment is reduced, the layout in the engine compartment is optimized, and the engine compartment maintenance is facilitated.

The radial flexible mechanism of the scroll compressor comprises a main shaft, a crankshaft seat is arranged at the output end of the main shaft, an eccentric hole is axially formed in the end portion of the end, away from the main shaft, of the crankshaft seat, and a crank pin is fixedly connected into the eccentric hole. The outer side of the end, away from the crankshaft seat, of the crank pin is fixedly sleeved with an eccentric shaft sleeve, one side of the eccentric shaft sleeve is fixedly connected with an eccentric block, a limiting groove is formed in the outer side of the end, close to the eccentric block, of the crankshaft seat, and an elastic washer is arranged on the inner side of the limiting groove. The groove is formed in the outer side of the crankshaft seat on the main shaft, and the rubber ring is fixed on the crankshaft, so that the collision between the eccentric block and the crankshaft is avoided, and the NVH (Noise Vibration and Harshness) performance is favorably improved; due to the fact that the rubber ring is additionally arranged, the self-aligning function has a buffering function, too intense self-aligning and rollback are avoided, and the movable disc of the compressor is more stable in operation, low in noise and good in NVH expression homogeneity.

The invention belongs to the technical field of automobile active suspension damping systems, and particularly relates to a mute stiffness valve and a control method thereof. The stiffness valve is switched from an open state to a closed state, and the plunger at least comprises a first stroke section, a second stroke section and a third stroke section; in the first stroke section, first direction current is input into the voice coil motor structure, so that the plunger is in an acceleration state; in the second stroke section, current input to the voice coil motor structure is stopped and / or second-direction current opposite to the first-direction current is input, so that the plunger is in a deceleration state; and in the third stroke section, the current in the first direction is input into the voice coil motor, so that the sealing element between the plunger and the air vent is compressed and seals the air vent. By controlling the current input into the voice coil motor structure, control over the moving direction and speed of the plunger is achieved, on the premise of quick response, the impact force generated when the plunger makes contact with the sealing support is remarkably reduced, and noise generated by impact is restrained.

This invention provides a method, apparatus, device, and storage medium for optimizing gear parameters in a speed reducer. The method includes: acquiring a sample set of gear pairs in the speed reducer, as well as the gear parameters and modification ranges of the gear parameters; inputting a portion of the sample set as training samples into a preset speed reducer simulation model to obtain first simulation values ​​for each training sample under various operating conditions, the first simulation values ​​including transmission error and peak-to-peak value of transmission error; calculating the mean and variance of the transmission error and peak-to-peak value of the training sample under different operating conditions based on the first simulation values ​​of the same training sample, and determining them as second simulation values; performing fitting calculations based on the training samples and the second simulation values ​​to determine a surrogate model; and constructing a gear parameter optimization model based on the surrogate model and the modification range, so that the gear parameter optimization model outputs optimized values ​​for each gear parameter based on the second simulation values. This invention not only improves the NVH performance of the speed reducer but also enhances the versatility of gear parameters.

This invention belongs to the field of vibration and noise reduction technology for new energy vehicles, specifically involving a low-noise design and evaluation method for electric drive systems based on acoustic metamaterials. The method involves determining the peak intensity and frequency of the vibration and noise response of the electric drive system, identifying the significant area of ​​working deformation of thin-walled components in the electric drive system, and determining the installation position of the acoustic metamaterial based on this area. It also involves determining the design boundary parameters of the acoustic metamaterial, designing a local resonant element, artificially constructing the local resonant element, prototyping the acoustic metamaterial based on the artificial construction scheme of the local resonant element in step five, installing the acoustic metamaterial in the determined installation area, and verifying its noise reduction performance. Finally, it determines whether the artificial construction scheme parameters are optimal; if optimal, the acoustic metamaterial scheme is determined. This invention systematically proposes a method for using acoustic metamaterials to mitigate single-frequency noise radiated by the thin-walled structure of the electric drive system, and clarifies the precise selection method for the installation position of the acoustic metamaterial on the thin-walled structure of the electric drive system.

The application relates to a double-motor automatic variable-speed electric driving system and a variable-speed transmission, belonging to the technical field of electric driving systems, which comprises a first motor, a second motor and a system output shaft for driving connection with a downstream system, the two rotor shafts of the first motor and the second motor are coaxially arranged, the rotor shaft of the first motor is arranged through the rotor of the second motor and the rotor shaft of the second motor in a relatively freely rotatable mode, and the two rotor shafts and the system output shaft are arranged in parallel; the two rotor shafts are connected with the system output shaft through a two-gear variable-speed structure. The coaxial arrangement of the rotor shafts of the two motors and the parallel arrangement of the two rotor shafts and the system output shaft reduce the volume, so that the electric driving system is compact in structure; the two-gear variable-speed structure is used for realizing two-gear variable-speed control of the downstream system, so that the transmission structure of the electric driving system is simplified.

The utility model provides a transmission system and a vehicle. The transmission system comprises an engine which comprises an oil pan, and an oil storage cavity is formed in the oil pan; the speed reducer comprises a speed reducer shell and a first half shaft, the speed reducer shell is arranged on one side, in the first direction, of the oil pan and connected with the oil pan, the first half shaft extends in the first direction, one end of the first half shaft is located in the speed reducer shell, and the other end of the first half shaft is located in the oil pan. The first half shaft is arranged on the two opposite side walls of the oil pan in the first direction in a penetrating mode. The support assembly is arranged on the side, away from the speed reducer shell in the first direction, of the oil pan and connected with the oil pan, the support assembly is provided with a supporting hole, and the first half shaft further penetrates through the supporting hole. The integrated design of the speed reducer and the engine can be achieved, so that the installation convenience of the speed reducer is improved, and then the arrangement convenience of the transmission system on the vehicle is improved.

This invention discloses a frame-based screw-connected powertrain suspension bracket structure, including a frame crossbeam. A left end plate, a right end plate, and a lower end plate are connected to the frame crossbeam. Both the left and right end plates have mounting bolt connection holes. The left and right end plates each have connecting flanges on their sides. The lower end plate has a connecting portion. One end of the connecting flange and one end of the connecting portion are respectively connected to the top and bottom of the frame, and the other end of the connecting flange is connected to the other end of the connecting portion. Using this frame-based screw-connected powertrain suspension bracket structure improves layout flexibility, optimizes the dynamic stiffness and vibration isolation performance of the mounting point, and enhances connection reliability.

This disclosure relates to a motor controller and its housing, and a vehicle. The housing of the motor controller has an opening (10) for mounting a connector (2), wherein a retaining wall (11) for protecting the connector (2) is provided on the outer periphery of the opening (10) on the housing (1). In the housing of the motor controller provided in this disclosure, a retaining wall is added to the outer periphery of the connector, and the connector is located in the internal space enclosed by the retaining wall, which can seal and protect the connector, thereby improving its salt spray resistance. Furthermore, the retaining wall and the housing can be an integral structure, which can improve the overall rigidity of the motor controller housing, thereby improving NVH performance.

The application discloses a hinge assembly and a vehicle, and belongs to the technical field of vehicle accessories. The hinge assembly is applied to a vehicle, and comprises a hinge and a first connecting piece. The hinge is provided with a first connecting part used for being connected with a vehicle body of the vehicle. The first connecting piece is used for connecting the first connecting part and the vehicle body. The first connecting part is used for being sealingly matched with an outer surface of the vehicle body, and the first connecting part is sealingly matched with the first connecting piece. The hinge assembly can solve the problem of poor sealing performance of the hinge in the prior art.

The embodiment of the present application provides an engine multi-connecting rod mechanism, an engine and a vehicle, relates to the technical field of engines, and aims at improving the technical problem that the piston impacts the cylinder wall under the action of the connecting rod in the prior art, thereby causing poor NVH performance.The engine multi-connecting rod mechanism comprises a crankshaft, a piston and an intermediate connecting rod; the intermediate connecting rod comprises a first arm rod and a second arm rod; one end of the first connecting rod, which is away from the crankshaft, is movably connected with the first arm rod; one end of the second connecting rod, which is away from the piston, is movably connected with the connecting part; and one end of the second arm rod, which is away from the first arm rod, is movably connected with the cylinder wall.The intermediate connecting rod is arranged, and the first arm rod and the second arm rod are arranged at an included angle, so that the swing range of the second connecting rod is reduced, the piston is prevented from impacting the cylinder wall during movement in the cylinder wall, vibration and noise caused by the piston impacting the cylinder wall are weakened, and the NVH performance of the engine is improved.

The invention relates to the technical field of electric driving systems, and discloses an electric driving system with a hydraulic torque converter and a forklift. The system comprises a driving motor, a hydraulic torque converter, a speed reducer and a vehicle control unit, wherein a lock-up clutch is integrated in the hydraulic torque converter; an output shaft of the driving motor is connected with a pump wheel input side of the hydraulic torque converter; a turbine output side of the hydraulic torque converter is connected with an input shaft of the speed reducer; the output end of the reducer is connected with a vehicle drive axle; when the vehicle is in the low-speed large-torque demand working condition, the lock-up clutch is controlled to be separated, so that the hydraulic torque converter works in the torque conversion working condition, and when the vehicle is in the low-speed large-torque demand working condition, the lock-up clutch is controlled to be separated; and when the vehicle is in a high-speed small-torque demand working condition, the lock-up clutch is controlled to be engaged, so that the pump wheel of the hydraulic torque converter is mechanically locked with the turbine, and the vehicle is in a coupler working condition. The power performance and the energy efficiency of the vehicle are improved, the cost of the electric drive system is reduced, and the economical efficiency and the NVH performance are improved.

This invention provides a window sealing structure assembly and a vehicle, belonging to the technical field of vehicle components. It includes a window frame, and sequentially integrated components forming a ring: a welt groove, a rear lower joint, a water-cutter, and a front lower joint. The water-cutter is located below the welt groove. A mounting groove is formed on the window frame at the open edge of the window frame, corresponding to and engaging with the welt groove. The opening of the mounting groove faces the open window frame and is located inside the outer panel of the window frame. The welt groove fits tightly against the outer surface of the window frame. The water-cutter connects to the lower edge of the open window frame. This invention reduces the channels for internal and external airflow at the sealing structure around the open area of ​​the window frame, which is beneficial for improving the vehicle's NVH performance; it reduces the number of parts during assembly, effectively reducing assembly steps and lowering assembly difficulty; and it ensures a smooth and aesthetically pleasing appearance.

This invention provides a method, system, and device for optimizing gear profile modification parameters in a transmission, relating to the field of transmission gear profile modification technology. The method includes: constructing a simulation model of the transmission assembly structure; calculating the median point of the modification amount; randomly adding modification amount samples and conducting on-machine NVH tests to obtain measured NVH data; using a modification-vibration generalized extension approximation model, calculating the generalized extension approximation function curves between the tooth profile modification amount and the tooth direction modification amount and the vibration noise value, respectively, to determine the modification amount distribution range; splitting the median point of the modification amount and the modification amount distribution range; reselecting the median point of the modification amount; randomly selecting a preset number of modification amount samples, calculating the set of tooth profile modification amounts, the set of tooth direction modification amounts, and the corresponding transmission error set that satisfy a normal distribution; and statistically analyzing the transmission error set to obtain an NVH distribution pattern diagram. This scheme can effectively design and simulate optimal modification parameters, eliminating subjective factors in the design process.

This invention discloses a cover plate for a drive assembly housing, a drive assembly having the same, and a vehicle. The drive assembly housing includes a lower housing and a cover plate. The lower housing has a mounting opening, and the cover plate closes onto the mounting opening. The cover plate includes a central arched area and a mounting area. The mounting area is an annular structure surrounding the central arched area and is used to contact and connect with the lower housing. The central arched area includes multiple curved panel areas that arch from the periphery towards the center in a direction away from the mounting opening. The electronic control cover plate of this application, by setting the central arched area and the mounting area, can increase the modulus of the electronic control cover plate and increase its natural frequency to a certain extent. This makes the natural frequency of the electronic control cover plate far away from the external excitation vibration frequency caused by the vibration of the drive motor, thereby reducing the resonance between the electronic control cover plate and the drive motor, reducing vibration and noise during drive assembly operation, and reducing resonance fatigue of the drive assembly structure.

The invention relates to a stator winding preparation method, a stator winding, a stator assembly and a permanent magnet motor. The stator winding preparation method comprises the steps that 18 conductors used for winding 9 winding branches of three phases are sequentially laid and wound in a wave winding mode; during tiled winding, the two effective parts of the wave winding pattern of the same-layer overline formed by wave winding of any conductor are arranged on the same layer, and the two effective parts of the wave winding pattern of the two adjacent groove layers are arranged in an up-and-down staggered layer manner; the 18 conductors which are laid and wound are coiled from one ends of the conductors to the other ends of the conductors; during coiling, the coiling direction of the 18 conductors is the direction in which the serial number of the conductor grooves is reduced, and the radial outer sides of the 18 conductors are the sides where the groove layers with the serial number of 1 of the conductor grooves are located. Through the specified coiling process, the problem that the NVH performance of the odd-number-layer stator winding of the continuous wave winding of the permanent magnet motor is poor due to the improper preparation method can be solved.

The application discloses a control method and device of a thermal management system, the control method obtains at least operating parameters including cooling liquid inlet stack temperature and cooling liquid outlet stack temperature, obtains fan target rotating speed according to cooling liquid temperature difference and preset temperature difference target value, obtains initial water pump rotating speed according to cooling liquid outlet stack temperature and temperature target value of the cooling liquid outlet stack temperature, and obtains water pump target rotating speed according to the initial water pump rotating speed and preset rotating speed compensation relation. Since the rotating speed compensation relation is a positive proportional change relation between water pump compensation rotating speed and the fan target rotating speed, the rotating speed of the fan and the water pump can be interlocked controlled when the fan of the radiator is controlled to operate at the fan target rotating speed and the water pump is controlled to operate at the water pump target rotating speed, temperature control is guaranteed, the rotating speed of the fan and the water pump can be inhibited mutually, both components are prevented from being at high rotating speed to cause large noise, and the NVH performance of the vehicle-mounted fuel cell stack thermal management system is improved.

The utility model discloses a rear suspension upper swing arm, rear suspension upper swing arm assembly and vehicle, include: swing arm body, by first end to second end along the length direction, swing arm body includes first steel sheet and second steel sheet, first steel sheet and second steel sheet along the length direction of swing arm body extends, and the edge of at least one of first steel sheet and second steel sheet is equipped with the flanging, and the flanging extends along the length direction of swing arm body, and first steel sheet and second steel sheet are welded to form the hollow box -like structure through the flanging, sleeve pipe, including first sleeve pipe and second sleeve pipe, first sleeve pipe is connected in the first end of swing arm body, and forms first mounting point through first sleeve pipe, and second sleeve pipe is connected in the second end of swing arm body, and forms second mounting point through second sleeve pipe. Compared with casting or straight steel pole, the strength is better, the performance is better, the maximum promotion strength, rigidity and buckling performance, effectively promote the whole car handling stability performance, NVH performance and endurance performance, and reach the cost optimum simultaneously.

This utility model discloses a coolant reservoir assembly, a cooling system thereon, and a vehicle, belonging to the field of vehicle cooling systems. The coolant reservoir assembly includes a coolant reservoir, a vibration isolator, and a limiting bracket. The coolant reservoir is mounted on the vehicle's base component and includes a vibration isolator mounting portion. The vibration isolator is fitted onto the mounting portion and is used to reduce and suppress vibration loads transmitted from the vehicle body to the coolant reservoir. The limiting bracket is mounted on the base component and is positioned circumferentially with the base component, preventing the vibration isolator from shifting and thus limiting the vibration amplitude of the coolant reservoir. This not only solves the problem of coolant reservoir shaking during vehicle operation but also improves the vehicle's NVH performance and the passenger's riding experience.

The stator assembly comprises a stator core and an M-phase stator winding, the stator core is provided with N slots, the stator winding is formed by winding a plurality of hairpin coils into L layers in the slots, each phase of stator winding comprises two sub-windings, each sub-winding is provided with a plurality of hairpin coils, the plurality of hairpin coils are distributed in L different layers of the N slots, the plurality of hairpin coils of each sub-winding comprise a first hairpin coil positioned on the first layer, a second hairpin coil positioned on the Lth layer and a middle hairpin coil positioned between the first layer and the Lth layer; the first hairpin coils of the two sub-windings are short-distance hairpin coils, and the second hairpin coils of the two sub-windings are long-distance hairpin coils; the total number of the middle hairpin coils of the two sub-windings is the same, the pitch types of the middle hairpin coils are the same, and the distribution of the pitch types is the same. The counter electromotive force, the resistance and the inductance of each sub-winding are the same, and the assembly efficiency of the winding is improved.

The application discloses a planetary row structure for a hybrid power assembly and a hybrid assembly, relates to the field of hybrid electric vehicle transmission, and comprises a shell, an engine input shaft and a motor input shaft are arranged in parallel in the shell, a planetary carrier is fixedly connected to the engine input shaft, a planetary gear is rotatably installed on the planetary carrier, a transmission gear one is arranged on the motor input shaft, the transmission gear one is in meshing connection with a transmission gear two arranged on an intermediate shaft, a sun gear is fixedly connected to the intermediate shaft, the sun gear is in meshing connection with the planetary gear, and a ring gear for power output is further arranged. The application compresses the axial space of the planetary row structure, improves the compactness of system arrangement, arranges the engine input shaft and the motor input shaft in parallel, adopts the ring gear with inner and outer tooth structures as a direct power output component, shortens the axial dimension of the planetary row assembly, and makes the planetary row assembly more easily integrated in the hybrid electric vehicle power assembly with limited space.

The application discloses a kind of multi-in-one integrated electric drive, noise reduction design method and electric forklift in the field of electric forklift integrated electric drive.The multi-in-one integrated electric drive includes two-in-one high-speed reducer, the two-in-one high-speed reducer includes reducer shell, walking gear train and hydraulic gear train, first chamber and second chamber are formed in reducer shell independently, by walking gear train and hydraulic gear train are respectively arranged in first chamber and second chamber, can effectively avoid the loss of two simultaneous work stirring oil turbulence.Through setting stator installation stopper, rotor installation bearing chamber and bolt hole in the side of reducer shell, walking motor and hydraulic motor are simultaneously integrated and installed on reducer shell, the front end cover of motor in traditional forklift multi-in-one assembly is saved, effectively save forklift installation space.The noise reduction design method proposed in the application can significantly improve the NVH performance of integrated electric drive.

The application discloses a tail gas exhaust pipe assembly and a vehicle with the same, the tail gas exhaust pipe assembly comprises: an exhaust pipe with an air inlet and an air outlet, and the exhaust pipe comprises a silencer pipe section and a water-gas separation pipe section between the air inlet and the air outlet, the silencer pipe section comprises at least two layers of silencer boards which are sequentially sleeved from inside to outside; wherein, the innermost silencer board of the at least two layers of silencer boards defines a gas flow channel which is communicated between the air inlet and the air outlet, and the silencer cavities are defined between the adjacent two layers of silencer boards, the silencer cavities are communicated with the gas flow channel, and the bottom of the outermost silencer board is provided with a drain port. The tail gas exhaust pipe assembly can reduce the noise generated by the stack structure when exhausting by using the silencer boards and the silencer cavities, thereby improving the riding comfort of the passengers, and the drain port arranged at the bottom of the outermost silencer board can avoid the water in the airflow from accumulating in the silencer pipe section.

This invention discloses a low-floor all-aluminum vehicle chassis, consisting of a front axle, a central battery compartment, and a rear axle module connected sequentially. The central section is low, while the sides are higher, with a height difference of 240–250 mm. The load-bearing frame of the central battery compartment connects the crossbeams and longitudinal beams via mortise and tenon joints, forming a grid-like inner frame and three battery compartments, upon which the floor is mounted. The front and rear axle modules are connected to the frame and crossbeams via mortise and tenon joints, supplemented by mechanical reinforcement. This invention employs a three-segment all-aluminum height-difference structure, achieving lightweight, high rigidity, and high battery capacity synergistically for a 6-meter-class Class I low-floor minibus. The grid-like inner frame formed by the central grid-like mortise and tenon joints enhances rigidity and optimizes force transmission, while also forming three battery compartments, increasing battery capacity from 71 kWh to 105 kWh, significantly extending range. The all-aluminum design reduces weight by over 1 / 3, lowering energy consumption. The modular design improves assembly precision and efficiency, overcoming the technical bottleneck of adapting all-aluminum structures to Class I low-floor designs, providing an accessible, low-carbon, and highly reliable microbus chassis solution.

The utility model discloses a kind of electronic water pump, thermal management system and vehicle, electronic water pump includes: casing, casing has the installation cavity of end open, installation cavity is used to accommodate rotor assembly;Pump cover, pump cover cover is located at the open end of installation cavity, and pump cover is cooperated with casing and defines pump cavity, pump cavity is used to accommodate impeller assembly;Thrust structure, thrust structure is located at pump cover and includes thrust part and damping part, thrust part is used to with rotor assembly axial end close to impeller assembly Resists, damping part is at least partially located in the side of thrust part away from rotor assembly. According to the electronic water pump of the utility model embodiment, by setting thrust structure in pump cover, thrust part can be axially thrust limited for rotor assembly, damping part can increase vibration transmission damping, to reduce the transmission rate of the vibration of rotor assembly to pump cover through thrust structure, to reduce structural vibration and noise, improve the NVH performance of electronic water pump.

A reinforcing plate for automotive doors, relating to the field of automotive parts technology, includes a reinforcing plate body and a door. The reinforcing plate body is disposed between the inner and outer panels of the door and has an elongated strip structure. Positioning holes are evenly distributed on the flanged portion of the reinforcing plate body. Positioning rods are provided on the door corresponding to the positions of the positioning holes. The positioning rods are inserted into the positioning holes and have a threaded end, which is fixed to the reinforcing plate body by a nut. The reinforcing plate body has several weight-reducing holes. This automotive door reinforcing plate replaces traditional welding, improves installation and positioning accuracy, facilitates disassembly and maintenance, and reduces maintenance costs. Through the combination of sound-absorbing cotton and the double fixing of grooves and protrusions, it ensures stable and long-lasting noise reduction, improving the vehicle's NVH performance.

The utility model belongs to motor manufacturing technical field especially relates to a rotor structure and motor, and the rotor structure includes rotor core, and the equidistribution of multiple magnetic poles has along its circumference, and each magnetic pole is provided with at least two layers of magnetic steel slot group, and each layer of magnetic steel slot group is C type structure, and each layer of magnetic steel slot group includes two separate magnetic steel slots about direct axis symmetry distribution, and the both ends of each magnetic steel slot are closed, magnetic steel is provided with multiple sections in each magnetic steel slot. The utility model is favorable for improving the magnetic field magnetic circuit of motor, reduces the harmonic distortion rate, thereby improves electromagnetic excitation, reduces motor torque ripple, realizes better motor NVH performance.

The utility model discloses a kind of electronic water pump, thermal management system and vehicle, electronic water pump, comprising: shell, the shell has the installation cavity and pump cavity with intercommunication;Impeller rotor assembly, the impeller rotor assembly includes impeller part and rotor part, the impeller part is located in the pump cavity, the rotor part is located in the installation cavity, the axial one end of the rotor part is connected with the impeller part, wherein, the rotor part is equipped with first communication channel, the first communication channel is through the rotor part along axial direction, to communicate the space of the axial both sides of the rotor part.Electronic water pump according to the utility model embodiment, by being set to the first communication channel of axial penetration in rotor part, the liquid pressure difference of the axial both sides of rotor part can be balanced, effectively improve the axial excursion problem of rotor part, reduce vibration noise, improve the NVH performance of electronic water pump.

This invention discloses a frameless door pillar assembly and a vehicle having the same. The frameless door pillar assembly includes: a vehicle body pillar; and a sealing element, which is an integral piece and includes a fixing portion, a first sealing edge, and a second sealing edge. The fixing portion is fixedly connected to the vehicle body pillar. The first sealing edge and the second sealing edge are both connected to the fixing portion and are spaced apart in the front-rear direction. Both the first sealing edge and the second sealing edge are adapted to abut against the door glass to seal the gap between the door glass and the vehicle body pillar. The first sealing edge, the second sealing edge, and the fixing portion cooperate to define a drainage cavity recessed towards the inside of the vehicle body. According to the frameless door pillar assembly of this invention, the first sealing edge and the second sealing edge of the sealing element abut against the door glass and the vehicle body pillar, which can increase the sealing performance of the vehicle and ensure excellent NVH performance of the windows.

The application belongs to the technical field of automobile air suspension and discloses an air supply unit control system and method, which comprises an electric control module, a valve body air path module, an electric drive module and an air drying module. The valve body air path module is provided with a winding heating regeneration air path, which can guide the high-pressure gas in the gas storage tank to flow through the motor winding for heating and then be introduced into the low-pressure cavity for the dryer regeneration. The electric control module realizes the intelligent operation of the system by executing a regeneration control algorithm, a pressure regulation strategy and a temperature-pressure collaborative control method. The regeneration control algorithm automatically triggers the regeneration process according to the humidity state or the time interval; the pressure regulation strategy maintains the stable system pressure according to the sensor signals; and the temperature-pressure collaborative control dynamically optimizes the control parameters according to the winding temperature and the air path pressure. The system effectively integrates the motor waste heat utilization, the dryer regeneration and the accurate pressure regulation and control, and improves the overall energy efficiency and reliability.