143results about How to "Good ride comfort" patented technology

The invention discloses a creeping speed control method for an electric vehicle. The method aims at solving the problems that in the prior art, the calculation of the creeping target torque of electric vehicles is inaccurate, by additionally arranging slope sensors or acceleration sensors, the costs are increased, and the robustness is reduced; meanwhile, a dynamic coordination control method forthe creeping torque of the electric vehicle is proposed to ensure better running smoothness when the vehicle switches between a creeping mode and other running modes. The dynamic coordination controlmethod for the creeping torque of the electric vehicle comprises the following steps of 1, determination of a working mode, wherein a vehicle control unit selects the target working mode according todriver's operation and the state of the vehicle; 2, calculation of the creeping target torque, wherein the creeping target torque is calculated by means of a 'feedforward reference torque + feedback compensation torque + parameter estimation feedback correction' method; 3, dynamic coordination control over the creeping torque, wherein slope limiting and filtering processing are conducted on the target creeping target torque obtained in the step 2, the requirement for the creeping torque after coordination is output to a motor controller to control the torque output of a motor, and therefore creeping running of the vehicle is achieved.

The invention discloses a control method for a multi-mode shock absorber of a vehicle and belongs to the field of energy conservation and emission reduction of vehicles. An ECU (Electronic Control Unit) controller judges driving road conditions through a vehicle signal acquired by a sprung mass acceleration sensor and an unsprung mass acceleration sensor, and further, a suspension is in active, semi-active and passive vibration damping modes through controlling the input current of a linear motor three-phase winding coil circuit and an excitation coil circuit in a magnet-rheological shock absorber, so that the vehicle can control the suspension at any moment when being under different road conditions to achieve a better riding comfortableness. Meanwhile, part of vibration energy of the suspension can be recovered by utilizing a linear motor when the suspension is in passive and semi-active modes, so that the organic combination of vibration isolation and energy feedback of the suspension is realized, and the purposes of energy conservation and emission reduction are achieved.

The intelligent gas spring includes a casing, an inner cylinder with cylinder cap and piston to separate the space inside the casing into main gas chamber and subsidiary gas chamber communicated through an on-off gas channel, and a stroke valve installed on the inner cylinder cap to suit with the damping cylinder on the piston. The gas channel may be opened or closed accurately and timely based on the varying road condition so as to regulate the rigidity of the gas spring intelligently to suit for different road condition. The present invention has excellent shock absorbing performance to make the automobile possess high riding comfort and excellent operation stability, and may be installed widely in various kinds of automobile.

A pneumatic tire comprises a tread portion 2 having an outside tread edge Teo and an inside tread edge Tei to be positioned outside and inside, respectively, with respect to a vehicle. The tread portion 2 is axially divided into land regions 4 by four main grooves 3 including an outside shoulder main groove 5, an inside shoulder main groove 6 and two crown main grooves 7. The outside shoulder main groove 5 has a width smaller than the inside shoulder main groove 6 and the crown main grooves 7. The land portions 4 include an inside shoulder land region 10 provided with inside shoulder lateral grooves 17. Each of the land regions 4 is provided with sipes 20 each extending across the entire width of the land region and having a width less than 3 mm.

The invention discloses a method for achieving temperature control in an elevator car and an elevator system. The method comprises the steps that based on an elevator car controller, a user command isreceived and comprises a temperature control command; based on a temperature sensor, the current temperature in the elevator car is obtained; the magnitude and plus-minus relations between the current temperature and the temperature value in the temperature control command are judged, and based on the magnitude relation and the plus-minus relation, a semiconductor cooler work command and/or an air capacity control command are/or generated; the air capacity control command is sent to a motor driving a cross flow fan to work, so that the motor drives the cross flow fan to work; and the semiconductor cooler work command is sent to a semiconductor cooler, so that the semiconductor cooler works according to the semiconductor cooler work command. According to the method for achieving temperature control in the elevator car and the elevator system, the semiconductor refrigeration and heating effects can be controlled for the elevator car.

The invention provides a variable damping automobile hydraulic buffer provided with a height adjusting system. The hydraulic buffer comprises a buffering system and the height adjusting system. The buffering system comprises a piston rod, a piston head, a spring assembly, an inner barrel, an outer barrel and a variable damping control valve. The height adjusting system comprises an air compressor, an air compressor control unit, a front axle height sensor, a rear axle height sensor, a pressure sensor, a signal control center, an air cylinder head, an air sac and a cylinder barrel. The inner barrel is partitioned into a rod cavity and a rodless cavity by the piston head. The outer barrel is partitioned into an outer barrel oil storage cavity and a floating piston oil storage cavity by an inner barrel lower end cover. Two oil ports of the variable damping control valve communicate with the outer barrel oil storage cavity and the rodless cavity correspondingly. A floating piston separates oil liquid from an air spring chamber. The oil liquid circuits between the rodless cavity and the rod cavity through the variable damping control valve and a series of damping holes, and is matched with the height adjusting system for making corresponding height compensation while the buffer is compressed or stretched. A good buffering effect and riding comfort can be obtained.

The invention belongs to a single-piston-rod, double-cylinder and double-coil magneto-rheological absorber. The single-piston-rod, double-cylinder and double-coil magneto-rheological absorber comprises an upper hanging ring with a hanging ring lining assembly. The upper hanging ring is connected with a piston through a piston rod. The outer portion of an inner cylinder is sleeved with an outer cylinder. An upper end cover is arranged at the upper portion of the outer cylinder, and a lower end cover is arranged at the lower portion of the outer cylinder. An upper magnetism isolation plate is arranged between the top of the inner cylinder and the upper end cover, and an upper magnetism isolation plate is arranged between the top of the outer cylinder and the upper end cover. First positioning bolts penetrate the upper magnetism isolation plates and are connected with upper stop blocks of the piston. Bosses clamping coil stop blocks are formed on the side walls of the upper portion and the lower portion of the outer cylinder. Magnetism isolation rings are arranged on the coil stop blocks, and coils are arranged at the outer portions of the magnetism isolation rings. A lower magnetism isolation plate is arranged between the bottom of the inner cylinder and the lower end cover, and a lower magnetism isolation plate is arranged between the bottom of the outer cylinder and the lower end cover. Second positioning bolts penetrate the lower end cover and the lower magnetism isolation plates to be connected with lower stop blocks of the piston. A guiding pipe is arranged on the wall of the outer cylinder and connected with the bottom of an air cylinder body, and an air cylinder piston is arranged in the air cylinder body. The upper portion of the inner cylinder communicates with the upper portion of the outer cylinder, and the lower portion of the inner cylinder communicates with the lower portion of the outer cylinder. The single-piston-rod, double-cylinder and double-coil magneto-rheological absorber has the beneficial effect that the need of automobile smoothness and operation stability for damping force of the absorber is taken into full consideration.

An air spring device comprising: an air spring (4) formed by hermetically connecting an upper surface plate (1) and a lower surface plate (2) by a tube-shaped flexible film body (3) and having gas sealed therein; a support plate (5) disposed at a required distance from the upper surface plate (1) or the lower surface plate (2) of the air spring (4); and an elastic body (6) for connecting the support plate (5) and the upper surface plate (1) or the lower surface plate (2). A recess (7) which is recessed toward the upper surface plate (1) or the lower surface plate (2) is formed in the center region of a surface of the elastic body (6), the surface being adjacent to the support plate (5). A portion of the elastic body (6), the portion facing the support plate (5), is surrounded and restrained by an annular body (8) provided to the support plate (5). A protrusion (9) protruding to the inside of the annular body (8) is provided to the upper surface plate (1) or the lower surface plate (2).

A control method for the transition from driving to braking deceleration of the car with mixed power features that a control system consisting of master controller, motor and its controller, accumulator and its managing unit, and clutch and its controller is used, and after the clutch is separated in braking process, the drive of motor is controlled by master controller is such manner that after the drive torque is increased to maximum, it is gradually decreased to needed braking torque.

The invention relates a vehicle suspension which comprises an oil cylinder, energy accumulators and damping adjustment units, wherein a rodless cavity of the oil cylinder and a rod cavity of the oil cylinder are respectively connected with one energy accumulator; one damping adjustment unit is arranged between the rodless cavity of the oil cylinder and the corresponding energy accumulator, and the other one damping adjustment unit is arranged between the rod cavity of the oil cylinder and the corresponding energy accumulator. The vehicle suspension has the beneficial effects that the two energy accumulator and corresponding valve banks are arranged, so that rigid and continuous adjustment is realized, the side-tipping resistance and side-turnover resistance of a vehicle are improved, and the comfort, safety and control stability of the vehicle are greatly improved; the capacity of a general gas chamber of the energy accumulator communicated with the rodless cavity of the oil cylinder is increased, so that the rigidity of the suspension is reduced, the suspension is relatively soft, and the vehicle is relatively stable and comfortable in running.

The invention relates to a special A-type frame air spring rear suspension for a large coach, comprising an A-type frame; the front end of the A-type frame is connected with a link assembly; the two sides of the rear end of the A-type frame are sequentially provided with an air spring assembly and an absorber; the A-type frame is provided with a flexible connection end bracket of a height control valve; the rear end of the A-type frame is connected with a transverse stabilizer bar. The invention has simple structure, light weight, little peculiar parts, multiple general parts and low cost; and the rear suspension is easy to manufacture, and the axle location is accurate and reliable without regulation.

The invention discloses an active type coil spring suspension which comprises a spring pre-tightening force regulating device, a suspension height regulating device and a shock absorber (15), wherein the spring pre-tightening force regulating device comprises an upper spring seat (8), a coil spring (12), a lower spring seat (13), a pull rod (11), a pre-tightening driven gear (9) and a pre-tightening power device; the pre-tightening driven gear (9) is rotatably arranged on the upper spring seat (8) through upper and lower bearings (10); the pull rod (11) is connected with the pre-tightening driven gear (9) through thread fit and passes through the upper spring seat (8), the coil spring (12) and the lower spring seat (13); the lower end of the pull rod (11) is provided with a limit clamping piece (14); and the pre-tightening power device is matched with the pre-tightening driven gear (9). After adopting the structure, the coil spring suspension has the advantages of simple structure, light weight, small volume, low failure rate, low production cost, convenient maintenance, good stability, active regulation capability of the spring pre-tightening force and the suspension height, and the like.

The invention discloses an improved ceiling control method of an energy feedback suspension system, and belongs to the field of automobile energy conservation and emission reduction. An energy feedback suspension is formed by connecting a spring and a linear motor in parallel, and an improved ceiling control strategy is put forward with the control aim of low suspension energy consumption and excellent riding comfort. The working mode of the linear motor is analyzed and judged by connecting an automobile signal, and the suspension is in three different damping modes; meanwhile, when the suspension is in a driven mode and a semi-driving mode, the energy feedback suspension system can recycle vibration energy through an energy feedback circuit, so the aims of energy conservation and emission reduction are achieved.

The invention discloses a pre-muffler. The pre-muffler comprises an outer tube, and a core tube which is provided with muffling holes, wherein the muffling holes are arranged to form a plurality of first muffling hole circles which are arranged at equal intervals in the core tube. The pre-muffler further comprises a second muffling hole circle which is arranged between any two adjacent first muffling hole circles; the muffling holes of the second muffling hole circles are as many as those of the first muffling hole circles; the muffling holes of each second muffling hole circle and each first muffling hole circle which are adjacently arranged are staggered. According to the pre-muffler, the muffling holes formed in the core tube have the same quantity, and the quantity is nearly doubled; meanwhile, the axially-adjacent muffling holes are staggered, so that the muffling effect can be obviously improved by being compared with that of an original pre-muffler, and passengers in an automobile can feel comfortable, and as a result, the performances of the whole automobile can be improved. The invention further provides a gas exhausting system comprising the aforementioned pre-muffler.

Provided is a durable, low-density soft polyurethane foam for use as a vehicle cushion or seat back, said soft polyurethane foam having strong mechanical properties. Also provided is a method for manufacturing said soft polyurethane foam. The provided soft polyurethane foam is manufactured by reacting and foaming a liquid mixture containing an organic polyisocyanate (A), a polyol (B), a chain extender (C), a catalyst (D), and a foaming agent (E). The core density of the provided soft polyurethane foam is between 25 kg/m and 35 kg/m . The aforementioned organic polyisocyanate (A) contains, by mass, 70 - 90% of a diphenylmethane diisocyanate (A-1) and 10 - 30% of a polymethylene polyphenylene polyisocyanate (A-2). Said diphenylmethane diisocyanate (A-1) contains 50 - 100% of 2,4-diphenylmethane diisocyanate and 2,2-diphenylmethane diisocyanate.

Provided is a novel passenger elevator, relating to an improvement on a car structure. The novel passenger elevator is exquisite in structure, convenient in operation and good in application effect. After the elevator is used, users are effectively prevented from feeling ill at ease due to overweight and weight loss brought up by operation of an elevator car. The novel passenger elevator comprises a traction machine, a guide wheel, the car, a counterweight and a wire rope. A buffer assembly is arranged in the car and comprises a bottom plate, two elastic assemblies and multiple springs. The two elastic assemblies are connected on two sides of the bottom of the car. The bottom plate is connected between the two elastic assemblies in a foldable manner. The bottom of the bottom plate is connected with the car through the multiple springs. The position, facing the two end surfaces of the two elastic assemblies, of the bottom plate is provided with a horizontal chute. Due to the fact that the buffer assembly is added to the car, the users do not feel at ease by firstly going downward and then slowly resetting, thereby making users feel very more comfortable when taking the elevator. The novel passenger elevator is featured by being simple in structure, low in cost and good in riding comfortableness.

The invention relates to the technical field of vehicle suspensions, and discloses an active suspension control method. In the running process of the vehicle, a front road is observed to obtain an unevenness curve of the road, and the posture of the vehicle which needs to be kept is estimated when the vehicle runs to the road surface and has smoothness, so as to obtain an expected value of the posture of the vehicle body; the active suspension controller calculates compensation information according to the road surface unevenness curved surface and obtains a suspension attitude instruction through calculation in combination with the current vehicle attitude state; when the vehicle runs to the uneven road surface, the active suspension controller sends a suspension attitude instruction to the chassis controller; the chassis controller controls the actuating mechanisms of the suspensions to independently adjust the corresponding suspensions, so that the vehicle can adapt to the fluctuation change of the road surface, the good smoothness of the whole vehicle is kept, and the riding comfort of the vehicle is improved. Meanwhile, the invention further discloses an active suspension control system.

Pneumatic tire 2 for a motorcycle that exhibits enhanced steering stability and high-speed stability without reducing riding comfort. The tire 2 is provided with a tread 6, a pair of beads 10, a carcass 12 and a reinforcement layer 14. The tread 6 includes a tread surface 20 which makes contact with the ground. Each bead 10 is positioned on the radially inner side of the tread 6. The carcass 12 is bridged between the two beads 10. A reinforcement layer 14 is laminated on the carcass 12 on the radially inner side of the tread 6. Beads 10 each include a core 24 and an apex 26. The apex 26 extends from a core 24 in a radially outward direction. The outer edge 44 of teh apex 26 is positioned on the radially outer side of the tread edge (TE) of the tread surface 20.

The invention provides an individual suspension front axle with a virtual master pin structure, relating to a vehicle part. The individual suspension front axle comprises an airbag assembly, an upper swing arm, a steering knuckle, a lower swing arm and a brake assembly, wherein the airbag assembly is directly mounted on the upper swing arm; the upper swing arm is connected with the upper end of the steering knuckle through a suspension spherical hinge assembly; the middle part of the steering knuckle is directly connected with the brake assembly; and the lower end of the steering knuckle is connected with the lower swing arm through the suspension spherical hinge assembly. The individual suspension front axle provided by the invention has favorable running smoothness and control stability, the steering knuckle plays a role of a traditional support arm, the suspension spherical hinge assembly is used instead of a master pin, and parts, such as the support arm, the master pin, dowels, an adjusting washer, a conical roller bearing and an oil seal, are omitted, so that the structure is greatly simplified, the cost and weight are reduced, the machining accuracy and assembly difficulty are reduced, the swing vibration is small, the automatic return effect is good, and the popularization and use are facilitated.