59results about How to "Excellent handling and stability" patented technology

The present invention aims to provide a rubber composition for a base tread capable of enhancing fuel economy, elongation at break and durability in a balanced manner while maintaining favorable handling stability and processability (extrusion processability) even if the amount of zinc oxide is reduced, and a pneumatic tire having a base tread produced from the rubber composition. The present invention relates to a rubber composition for a base tread including: a rubber component; a compound represented by Formula (I):

wherein R¹ to R⁴ each independently represent a C1 to C18 linear or branched alkyl group or a C5 to C12 cycloalkyl group; and zinc oxide, wherein the amount of the compound represented by Formula (I) is 0.2 to 6 parts by mass and the amount of the zinc oxide is 1.0 part by mass or less, relative to 100 parts by mass of the rubber component.

A MacPherson air suspension comprises a cross stabilizer bar, two strut assemblies arranged on the left side and the right side of the cross stabilizer bar, a left steering knuckle, a right steering knuckle, a left lower suspension arm, a right lower suspension arm and a left-right stabilizer bar connection push rod connecting the cross stabilizer bar and the strut assemblies. Each strut assembly comprises a front shock absorber and an air spring assembly integrated on the front shock absorber, and the front shock absorber is fastened with the lower support of the front shock absorber through bolts. The upper ends of the left steering knuckle and right steering knuckle are respectively connected with the upper portion of the lower support of the front shock absorber through ball pin fittings, the lower portions of the left steering knuckle and right steering knuckle are connected with shaft sleeve connection plates of the steering knuckles through shaft pins and are connected with the lower portion of the lower support of the front shock absorber through the shaft sleeve connection plates, and the left steering knuckle and right steering knuckle respectively form an integrated frame structure with the lower support of the front shock absorber. The central connection line of the ball joints of the ball pin fittings and the shaft sleeves of the shaft sleeve connection plates of the steering knuckles is a main pin axis a. The MacPherson air suspension can meet the requirements of an automobile under various loading conditions, and ideal comfortable ride comfort can be obtained.

A design method for improving lane tracking and control stability includes S10 detecting the sideward tilting angle or the forward tilting angle and the backward titling angle of an automobile body and the moving distance of the mass center relative to wheels by combining a sensor according to the steering and accelerator pedal angle input provided by a driver; S20 inputting automobile work condition information into a proportion integration differentiation (PID) controller and obtaining the driving adjusting amplitude of suspension height and the power distribution ratio of wheel driving motors through a corresponding PID control algorithm; S30 reallocating vertical load of automobile tires after an automobile receives feedback control, meanwhile reallocating driving force of four wheels according to the vertical load of the tires and generating correction yawing moment during steering to restrain understeering or oversteering of the automobile, restrain sideward tilting of the automobile body and restraining backward tilting, forward tilting and wheel slip of the automobile during the acceleration and braking process. A four wheel independent driving system and a driving suspension system are combined, and the stability and the lane tracking performance are improved.

Provided is a pneumatic tire which has a reduced weight, reduced rolling resistance, and improved anti-separation performance, which are achieved while driving stability is maintained satisfactorily. This pneumatic tire is configured in such a manner that two carcass layers including carcass cords are provided across a pair of bead sections, a bead core and a bead filler are disposed in each of the bead sections, and at least two belt layers are disposed on the outer peripheral side of the carcass layers. The pneumatic tire is characterized by being configured in such a manner that both ends of the inner peripheral carcass layer are turned back from the inside to the outside of the tire around the bead cores while the ends of the turned back sections of the inner peripheral carcass layer are disposed between the inner peripheral belt layer and the outer peripheral carcass layer, and also in such a manner that both ends of the outer peripheral carcass layer are disposed so as to pass through between the body section of the inner peripheral carcass layer and the bead fillers and are terminated at the bead sections without being turned back around the bead cores.

Provided is a rubber composition for a bead apex and a pneumatic tire which can provide good handling stability and enable suppression of reduction of this performance. The rubber composition for a bead apex includes a rubber component; a carbon black; zinc oxide; and an alkylphenol-sulfur chloride condensate, wherein the carbon black has a COAN of 75 to 130 ml/100 g and a BET specific surface area of 25 to 50 m²/g, and an amount of the carbon black is 55 to 80 parts by mass and an amount of the zinc oxide is 7 to 12 parts by mass, per 100 parts by mass of the rubber component.

The invention discloses a device for producing cyclohexane by adding hydrogen in benzene and a synthesis process. The device mainly comprises a gasification tower (1) and a reactor (2), wherein a liquid phase benzene inlet (5) is arranged at the upper part of the gasification tower (1), a liquid phase benzene outlet is arranged at the lower part of the gasification tower (1), the liquid phase benzene outlet is connected with a shell pass inlet of the reactor (2) through a pipeline (8), a shell pass outlet of the reactor (2) is connected to the gasification tower (1) through a pipeline (9), a gas phase outlet is arranged at the top of the gasification tower (1) and connected to a pipe pass of the reactor (2) through a pipe pass feed pipeline (12), a hydrogen material pipeline (6) is connected to the pipe pass feed pipeline (12), and a pipe pass discharge pipeline (11) is arranged at the bottom of the reactor (2). In the device, heat discharged from the intermediate reaction in the cyclohexane synthesis process is directly used for gasification of reaction material benzene so as to release the reaction heat without secondary heat exchange, therefore, the stable reaction conversion ratio is achieved, and the production capacity is improved.

The invention provides a pneumatic tire that can improve ice road performance and control stability evenly. A middle pattern block (10) is arranged at the tire peripheral direction. The two sides of the middle pattern block (10) at the peripheral direction have an axial edge (10a) that extends in an angle below 15 degree relative to the tire axial direction. The middle pattern block (10) has a plurality of middle blade groove pattern (20). The middle blade groove pattern (20) comprises an outer blade groove pattern (21) set at the two sides of the tire in peripheral direction; and an inner blade groove pattern (22) set between the outer blade groove pattern (21) at the two sides. The length at the tire peripheral direction between the axial edge (10a) and the outer blade groove pattern (21) is larger than the distance of the adjacent middle blade groove pattern (20) at the tire peripheral direction.

Provided are a modified cellulose fiber-containing rubber composition and rubber composition for tires that are allowed to simultaneously achieve excellent rigidity, excellent tensile properties, and low energy loss by improving the dispersibility of the cellulose fiber in rubber, as well as a pneumatic tire formed from the rubber composition, having excellent handling stability, excellent rolling resistance properties, and excellent durability. The present invention relates to a modified cellulose fiber-containing rubber composition containing: a modified cellulose fiber (A) obtained by adding a C15 or higher cyclic polybasic acid anhydride (a) containing a hydrophobic group to a cellulose fiber through esterification; a dispersing polymer (B) having a softening point of 135° C. or lower; and a rubber component (C).

The invention discloses a power transmission module with a self-locking mechanism. The power transmission module comprises an actuator, a reducing mechanism and a driven shaft, wherein the actuator is provided with a driving shaft; a driving gear which coaxially rotates is arranged on the driving shaft; the reducing mechanism comprises a transmission shaft provided with a driven gear and a driving worm respectively; the driven gear is directly meshed with the driving gear or meshed with the driving gear through a reducing gear; the driven shaft is provided with a driven worm meshed with the driving worm; and the meshed part of the driven worm and the driving worm is provided with a worm gear lead angle capable of generating a self-locking effect, so that the driving worm cannot be driven by the driven worm. Compared with the prior art, the power transmission module has a self-locking function, is energy-saving, stable and high in safety, has excellent control stability, and can greatly reduce a danger that the actuator bears high torque and is burnt down.

The invention discloses a vacuum refining method for molten steel implemented by using a two-tank single-cover type VD refining furnace. The vacuum refining method is characterized in that an operation platform of the refining furnace is erected above a molten steel return linear guide rail, and in the process of steelmaking, double-station alternate cyclular treatment is realized in a pre-vacuumizing mode. The method disclosed by the invention has the advantages that the refining furnace is compact in structure, scientific in layout and small in occupied land, the operation and control for a tank cover is convenient, a vacuumizing system is reasonable in structure, good in operating stability, high in working efficiency, and long in service life, and the efficiency and effect of refining are improved.

The present invention belongs to the field of mechanical engineering technology. The independent front suspension system with adjustable front wheel positioning parameters includes six rod end bearings, lining sleeves, locking nuts, upper cantilever, the lower cantilever, steering knuckles, and connecting screws and nuts. The locking nuts are set on the screw rods of the rod end bearings; the six rod end bearings and the locking nuts are set separately inside the screw holes of ends of the upper cantilever and the lower cantilever; each of the rod end bearings of the upper cantilever and the lower cantilever in the vehicle body side is connected to the screw and nut of the fixed suspension; and the rod end bearings of the upper cantilever and the lower cantilever in the steering knuckle side have lining sleeves set on two sides of the ball rollers and are connected to the steering knuckles. The present invention can trim the front wheel positioning parameters in relatively great ranges.

The present invention relates to a pneumatic tire capable of improving wet performance, uneven wear resistance and steering stability in cornering in good balance. An inboard portion (5) is provided with a circumferentially and continuously extending first main groove (11) which is arranged on the position 0.20-0.70 times of the width of the inboard portion (5) from the tire equator (C) along the axial direction of the tire. An outer outboard portion (6) is not provided with a plurality of slits, of which the groove edges do not connect with any of the tire equator (C) and an outboard tread edge (Te2), and a tire shoulder landing portion (24) which continuously extends along the circumferential direction of the outboard tread edge (Te2).

The present invention provides rubber compositions for tires which are capable of improving handling stability, fuel efficiency, and processability while sufficiently reducing the dependence on petroleum resources, and pneumatic tires including tire components (e.g. bead apex) formed from the rubber compositions for tires. The present invention relates to rubber compositions for tires, containing a rubber component and a naturally derived phenolic resin.

The invention discloses a single-motor and four-wheel-drive electric vehicle starting and running control method. An electric vehicle comprises a vehicle control unit and a driving motor; one end of the driving motor is connected with a front drive speed reducer through a front clutch; the other end of the driving motor is connected with a rear drive speed reducer through rear front clutch; the front drive speed reducer is connected with front wheels; and the rear drive speed reducer is connected with rear wheels. The single-motor and four-wheel-drive electric vehicle starting and running control method comprises the following steps that the vehicle control unit controls the starting of the electric vehicle according to the actual load situation of the electric vehicle; and after starting,the vehicle control unit controls running modes of the electric vehicle according to the actual load situation, wherein the running modes comprise a front wheel and rear wheel simultaneous driving mode, a front wheel driving mode and a rear wheel driving mode. According to the single-motor and four-wheel-drive electric vehicle starting and running control method, the optimized control of vehiclepower can be effectively reduced, the total weight and cost of the vehicle are greatly reduced, enough power can be preferably transmitted to road surfaces, and the accelerating and off-road capability of the vehicle is improved.

The invention discloses a high-control low-noise pneumatic tire, which relates to the field of pneumatic tires, and comprises a tire body, the tire body comprises a tire tread, and grooves formed in the tire tread along the circumferential direction and the axial direction of the tire divide the tire tread into a plurality of block-shaped patterns. The high-control low-noise pneumatic tire has a simple structure. A set of protruding blocks are arranged in circumferential grooves in the inner side and the outer side in the radial direction of the tire, the parameter range of the width, the depth and the number of the protruding blocks is limited, meanwhile, asymmetric pattern design is adopted for the tire tread, and transverse grooves in the crown portion of the tire tread are all formed in a corner cut and thin groove combined mode. And the parameter range of the chamfers and the fine grooves is limited, so that the relationship among all performances of the tire can be effectively balanced, and the tire can have excellent wet land, noise performance, control stability and safety performance at the same time.