139results about How to "Good driving comfort" patented technology

The invention relates to a concrete pavement material for heavy traffic roads and a preparation method thereof. The material is composed of a component A, a component B and a component C in a mass ratio of 1:(0.2-0.6):(4-8). The component A comprises the following components in parts by mass: 40-80 parts of epoxy resin, 0-20 parts of epoxy reactive diluent, 10-50 parts of elastic modifier, 0.2 part of defoaming agent and 0.2 part of dispersing agent. The component B comprises the following components in parts by mass: 100 parts of curing agent, 0-10 parts of curing accelerator and 1 part of coupling agent. The component C comprises the following components in parts by volume: 100 parts of fine stone, 30-300 parts of fine sand, 130-800 parts of waste rubber particle, 50-100 parts of waste rubber powder and 10-20 parts of crystal whisker. Compared with the prior art, the concrete pavement material for heavy traffic roads has the advantages of high strength, favorable durability, favorable roadability, energy saving, environment friendliness and the like, and is convenient for construction.

The invention discloses a cement concrete pavement structure provided with continuous steel bars. The pavement structure comprises a base layer. Roller compacted concrete is adopted in the base layer. A broken stone hardcore is laid below the base layer. Cement concrete surface layers are laid on the base layer. The cement concrete surface layers include the upper surface layer and the lower surface layer. Rubber cement concrete is adopted in the upper surface layer. A transverse induction kerf is arranged on the edge of the upper surface layer on the left side of the driving direction. The continuous transverse steel bars, the continuous longitudinal steel bars and a slidable support are arranged at the portion, within the range of a carriageway and one half of the width (L) of a hardened verge, of the lower surface layer. Plain concrete is formed at the portion, within the other half of the width (L) of the hardened verge, of the lower surface layer. A longitudinal joint is arranged at the portion one half of the width of the hardened verge. A bituminous concrete anti-scouring layer is arranged between the base layer and the surface layers. The pavement structure can solve the problems of existing cement concrete pavements and continuous reinforced concrete pavement structures and can be widely applied to high-grade highways, tunnel pavements and the like on the heavy-duty traffic condition.

The invention discloses a vehicle alarm system which comprises a DSP control chip, a detection unit and an alarm unit. The detection unit judges whether a moving target exists in a preset scope at back of a vehicle or not according to a detection command of the DSP control chip, the moving target is detected when the detection unit judges that the moving target exists in the preset scope, and a first detection signal obtained by detection is supplied to the DSP control chip through the detection unit; the DSP control chip judges whether a door opening early alarm is required or not according to the first detection signal provided by the detection unit, and a door opening alarming signal is supplied to the alarm unit through the DSP control chip if the DSP control chip judges that the door opening early alarm is required; the alarm unit gives an alarming prompt to a user in the vehicle according to the door opening alarming signal provided by the DSP control chip. According to the vehicle alarm system, vehicle accidents caused by vehicle door opening ate avoided, and the use safety performance of the vehicle is improved. In addition, a passenger is not required to watch the state at back of the vehicle before getting off the vehicle, and better riding comforts are provided for the passenger.

The invention is applicable to various vehicles, and particularly relates to a normally engaged wet type clutch used on a car. The normally engaged wet type clutch comprises a motive power output shaft, an input shaft, a driven clutch hub, a driving clutch hub, a driven friction sheet, an active friction sheet and a thrust disc, wherein the motive power output shaft and the input shaft are respectively arranged on a casing and an end cover through bearings, the driven clutch hub and the driving clutch hub are respectively and fixedly arranged on the output shaft and the input shaft, the driven friction sheet is connected onto the driven clutch hub, the driving friction sheet is connected onto the driving clutch hub, the thrust disc is leaned and arranged on the end surface of the driven friction sheet, a diaphragm spring is arranged on the outer side of the thrust disc and is butted and connected onto the outer wall of the diaphragm spring through a pre-tightening screw bolt which is used as a lever fulcrum and is fixedly arranged on the driven clutch hub, a piston arranged on the input shaft diameter is butted and connected onto the inner edge of the diaphragm spring through the thrust bearing, and in addition, the pre-tightening screw bolt is regulated so that the driving and driven friction sheets are in the normally engaged states. The range of the torque transmitted by the wet type clutch is greater, the service life of the clutch can be prolonged, and the driving comfort is better.

The invention belongs to the technical field of vehicle control method, concretely relating to a speed limiting method for electric-jet low speed vehicle, adding speed control application-special logics in the original engine control unit ECU, i.e. respectively adding speed stage determining module, engine speed determining module and ignition angle regulating logic control module and setting three-stage target speed limit values and engine speed limit values in failure diagnosis module, mainly using speed signal as control target, and according to the comparative result of actual speed and target speed limit value, controlling oil jet module to cut off oil by cylinders to control the speed; and by regulating ignition advance angle, controlling ignition module to correct torsion impact produced before and after cutting off oil, and making oil cutoff and oil supply restoration as stable as possible. And the advantages: only modifying control logics of ECU to be able to implement speed control without adding any device, and the control is accurate and reliable, and when lower than limited speed, the vehicle has consistent performance with that of a nonlimited speed vehicle, and the speed limit value is convenient to modifying, and it is applied to different occasions.

The invention discloses a parallel type electric vehicle regeneration brake system and a control method of the parallel type electric vehicle regeneration brake system. The parallel type electric vehicle regeneration brake system comprises a central processing unit, a vehicular speed sensor, an acceleration pedal position sensor, a brake pedal position sensor, a battery management system, a power battery, a motor controller and an electric motor; the central processing unit is respectively and electrically connected with the vehicular speed sensor, the acceleration pedal position sensor, the brake pedal position sensor, the battery management system, and the motor controller; the battery management is also electrically connected with the power battery; the motor controller is further electrically connected with the electric motor. According to the vehicular speed, the acceleration pedal position, the brake pedal position and acceptable maximum power of the current power battery, the current maximum useable feedback torque can be calculated, the highest feedback power is limited, and the power battery is protected.

The invention provides a composite fabricated cement concrete pavement structure. The composite fabricated cement concrete pavement structure comprises a base layer, a leveling layer laid on the baselayer, a fabricated prefabricated concrete slab laid on the leveling layer, a rubber modified asphalt synchronous gravel sealing layer laid on the fabricated prefabricated concrete slab, and rubber modified asphalt concrete laid on the rubber modified asphalt synchronous gravel sealing layer. Compared with the prior art, the composite fabricated cement concrete pavement structure is formed by combining specific functional layers under specific connection relationship, the functional layers have good interaction, and the cooperation of layer structures is realized, so that the whole composite fabricated cement concrete pavement structure has high strength and good driving comfort, and reflective cracks and rutting can be reduced, and the service life of the pavement is prolonged. The experimental results show that the pavement damage index PCI of the composite fabricated cement concrete pavement structure is 92.3-95.5, and the pavement service condition is excellent.

The invention discloses a pavement splicing method and structure for old cement concrete pavement reconstruction and expansion. A cement concrete slab splicing seam is formed in a hard shoulder of an old cement concrete slab, steps are arranged on an old road upper base layer, an old road lower base layer and an old road cushion layer for transition, poor concrete is adopted for a new road upper base layer of an expansion part, and unscreened macadam is adopted for a road bed; a new cement concrete slab and the old cement concrete slab are connected by adopting double-layer reinforcing steel bars; a high-molecular polymer anti-cracking paste is firstly stuck to the cement concrete slab splicing seam, then an asphalt concrete anti-cracking leveling interlayer is paved, and a lower asphalt concrete surface layer and an upper asphalt concrete surface layer are finally paved sequentially, wherein the lower asphalt concrete surface layer is doped with 0.3% by mass of short-cut basalt fiber. According to the method and structure, the problem that the durability of existing old cement concrete pavement reconstruction and expansion engineering is insufficient can be effectively solved, and the important significant is achieved for promoting quicker and better development of transportation industry in China.

The invention provides a control method for starting an engine by using a clutch of a deep hybrid power automobile. The method comprises the steps that whether or not starting demands of the engine are met is judged by a starting demand judging module, if yes, the steps of oil filling of a first clutch, the dragging of an engine of the first clutch, oil spraying control of the engine, PI controlling and first clutch closing are sequentially conducted, and the starting of the engine is completed; during the oil filling process of the first clutch, starting process time tes of a current engine is judged, slipping work Q of a unit area of a current first clutch and the starting process time tes of the engine are judged in the steps of the dragging of the engine of the first clutch, the oil spraying control of the engine and the PI controlling, if judging results exceed limiting values, current steps are ceased, whether or not judging failing times are exceeded is judged, and judging stepsof the starting demands of the engine are executed again or a fault mode is entered according to judging results. The method is easy and achievable, and the smoothness of the starting process of theengine can be ensured to prevent the shaking of the automobile.

The invention discloses a cementing material based on continuous elastic-plastic expansion joints of small-span and medium-span bridges and a preparation method and application thereof. The cementing material is composed of matrix pitch, SBS (styrene butadiene styrene polymer), waste rubber powder, TOR (trans-polyoctenamer rubber) binder and aromatic hydrocarbon. The mass ratio of matrix pitch : SBS : waste rubber powder : TOR (trans-polyoctenamer rubber) binder : aromatic hydrocarbon is 100:8 to 10:15:2:3 to 5. The preparation method includes steps of mixing the waste rubber powder and TOR uniformly, then adding the mixture into the matrix pitch at the temperature of 170 DEG C to mix to form modified pitch mother liquor, adding the SBS and the aromatic hydrocarbon into the modified pitch mother liquor and mixing the same at the temperature of 180 DEG C to prepare composite modified pitch which is the cementing material based on the continuous elastic-plastic expansion joints of the small-span and medium-span bridges. The cementing material based on the continuous elastic-plastic expansion joints of the small-span and medium-span bridges is simple in preparation and applied to the small-span and medium-span bridge expansion joints and has the advantages of high comfortableness in running, high elastic recovery capability, low flexibility, fine high-temperature stability and waterproof performance, convenience in construction and repair, fast traffic opening and the like.

The invention discloses an asphalt concrete seamless retractor device and a construction method thereof. The asphalt concrete seamless retractor device comprises an asphalt concrete pouring layer, joint-crossing plates, an isolated layer and paving transition belts, wherein the joint-crossing plates are laid above an expansion joint formed between the ends of two bridges or between a bridge abutment back wall and the end of a bridge, the number of the joint-crossing plates is more than one, the length of the joint-crossing plates is larger than the width of the expansion joint, the paving transition belts are arranged at the sides, extending to the expansion joint, of bridge face paving layers, the isolated layer is laid on the bottom face of a rear pouring port formed by two paving transition belts, the isolated layer is arranged at the top faces of the joint-crossing plates, the asphalt concrete pouring layer is arranged in the rear pouring port above the isolated layer, and the surfaces of the sides, in contact with the asphalt concrete pouring layer, of the paving transition belts are set in a wave shape. The asphalt concrete seamless retractor device and the construction method thereof have the advantages that the design is reasonable, the construction is convenient, under the condition of satisfying the telescopic deformation of a bridge structure, the driving comfort isimproved, the repair and maintenance of a telescopic device are reduced, and the engineering application value is good.

The invention relates to a preparation method of a vibration-damping sponge base plate for a high speed railway. The method comprises the following process procedures: step 1, mixing so as to form mixed glue: placing glue stock in a internal mixer for mixing so as to form the mixed glue, wherein the glue stock is composed of the following raw materials in parts by weight: 80 parts of natural glue, 20 parts of ethylene propylene diene monomer (EPDM), 5 parts of zinc oxide ZnO, 50 parts of carbon black 550, 2 parts of antiager 4010 NA, 1 part of antiager RD, 2.5 parts of sulfur, 1.5 parts of vulkafor DM and 0.2 part of vulkafor TT; step 2, extruding so as to form a material blank: placing the mixed glue prepared in the step 1 in a screw extruder for extrusion so as to form the material blank; step 3, mould pressing and vulcanization molding: placing the material blank prepared in the step 2 in a flat vulcanizer for mould pressing and vulcanization molding so as to prepare a sponge base plate; and step 4, punching and cutting: punching the sponge base plate prepared in the step 3 so as to form the finished vibration-damping sponge base plate product. The vibration-damping sponge base plate has the advantages of good weather resistance, good hydrolysis resistance, good train travel comfortableness and low cost, and is environmentally-friendly.

The present invention discloses one kind of sludge haydite-cement concrete for road and its preparation process. The sludge haydite-cement concrete is mixture of sludge haydite, cement, crushed stone, sand, water and admixture in certain weight proportion. It is prepared through wetting sludge haydite and mixing the materials; and is used through spreading, vibrating and curing. The sludge haydite-cement concrete has excellent performance, environment friendship and low production cost.

The invention discloses an aqueous resin modified asphalt pavement maintenance material and a preparation method thereof. The aqueous resin modified asphalt pavement maintenance material is prepared by the following steps: uniformly mixing resin, an oil content, asphalt and an emulsifier, adding water into the mixture for emulsification, then adding aqueous carbon black color paste, fillers, fineaggregates and coarse aggregates into the mixture and uniformly mixing. When in application, the surface layer of an asphalt pavement is coated with the aqueous resin modified asphalt pavement maintenance material by spray coating, scrape coating or roll coating, so that the skid resistance and the water damage resistance of the asphalt pavement can be improved, therefore, the service life of a road is prolonged.

The invention discloses a railroad bridge separated double-box steel main-girder structure with independent air nozzles. The railroad bridge separated double-box steel main-girder structure comprises a bridge deck system, wherein separated side box girders are arranged on two sides of the transverse bridge direction of the bridge deck system, one side of each separated side box girder is in welded connection with the bridge deck system, and the other side of each separated side box girder is in welded connection with the corresponding independent air nozzle. Each separated side box girder comprises multiple separated side box girder sections arranged in the bridge direction, and the separated side box girder sections adjacent in the bridge direction are spliced through bolts. The designed railroad bridge separated double-box steel main-girder structure is clear in stress, and the local stability problems are few. Compared with integral steel box girders, the structural size is decreased somewhat, the structure can be prefabricated in a factory, field weld joints are avoided, and the construction precision and construction quality are ensured. Compared with steel truss girders, complicated node splicing work is decreased, and the steel consumption is decreased. In addition, the outer surface of the main-girder structure is simple, and the maintenance and repair amount is small. Compared with the integral steel box girders and the steel truss girders, the wind resisting performance is greatly improved.

The invention relates to an off-highway dump truck for reducing abrasion and prolonging service life of a plate spring. The off-highway dump truck is characterized in that: a power system of the dump truck is connected on a main frame; a steering system is connected on the left front outer side of the main frame; a suspension system is connected below the main frame; braking systems are connected on the inner and outer sides of the main frame; a hydraulic cylinder of a lifting system is connected above the front end of a secondary frame and on the front plate of a cargo box through a cylinder connecting seat, the cargo box is connected above the secondary frame, and the secondary frame is connected above the main frame through a bracket and a connecting plate; a cab is arranged on the left front part of the main frame on single side; the suspension system mainly comprises a front suspension system and a rear suspension system, the rear suspension system is provided with a new-type plate spring sliding plate seat, the seat body of the sliding plate seat has a framework-type structure, two ends of the lower surface of the upper plane of the seat body are downwards raised lower arc surfaces, and the middle of the seat body is a plane; and the upper surface of the lower plane of the seat body is an upwards raised upper arc surface. The invention defines the market of off-highway trucks, determines the technical indexes of the off-highway trucks according to the determined market requirements, and mainly solves a truck ground system in an off-highway state.

The invention discloses a two-gear dual-clutch hybrid power system and a hybrid power vehicle. The system comprises an inner input shaft, an outer input shaft, an intermediate shaft, a differential and a motor, a first-gear driven gear, a second-gear driven gear and a normally engaged gear are fixedly connected to the intermediate shaft; the inner input shaft is connected with an engine through afirst clutch; the outer input shaft is connected with the engine through a second clutch; the outer input shaft is fixedly connected with a first-gear driving gear; the first-gear driving gear is meshed with the first-gear driven gear, the inner input shaft is fixedly connected with a second-gear driving gear, the second-gear driving gear is meshed with the second-gear driven gear, the normally-meshed gear is meshed with a main reduction gear of the differential mechanism, and a motor transmission mechanism is arranged between the motor and the differential mechanism and used for transmittingpower of the motor to the differential mechanism. Two gears are used, a synchronizer is omitted, gear switching is performed through the double clutches, torque supplementing is conducted on the motorin the gear shifting process, smooth gear shifting is guaranteed, the transmission efficiency is high, the space is small, and the whole vehicle is easy to arrange.

Damping system for articulated vehicle and method for regulating such a damping system. In a normal state, when there is no risk situation with regard to mutual outswing between the forward vehicle element (2) and the rear vehicle element (3) of the vehicle, the damping means (30a, 30b) of the damping system are caused to exert a damping force which is pulsated, in order thereby to facilitate mutual straightening up between the forward vehicle element and the rear vehicle element. When it is determined that there is a risk situation with regard to mutual outswing between the forward vehicle element and the rear vehicle element, the damping means are caused to exert a damping force which is non-pulsated and stronger than the damping force in the normal state, in order thereby temporarily to prevent the articulation angle from increasing, after which the damping means are caused to revert to the normal state with pulsated damping force of reduced strength.

The invention discloses an electromobile transmission. The electromobile transmission comprises a transmission body, wherein an input shaft and a driven shaft are arranged in the transmission body, a first driving gear and a second driving gear are arranged on the input shaft, a synchronizer is arranged between the first driving gear and the second driving gear in a sliding mode, a left blocking ring is arranged on the portion, on one side of the first driving gear, of the input shaft, a left electromagnetic clutch matched with the first driving gear is fixedly arranged on the left blocking ring, a right blocking ring is arranged on the portion, on one side of the second driving gear, of the input shaft, a right electromagnetic clutch matched with the second driving gear is fixedly arranged on the right blocking ring, a first driven gear and a second driven gear are arranged on the driven shaft, a transition shaft is arranged on the portion, between the first driven gear and the second driven gear, of the transmission body, a transition gear is arranged on the transition shaft, the transition gear is meshed with both the first driving gear and the first driven gear, and the second driven gear is meshed with the second driving gear.