58results about How to "Improved brake response" patented technology

The invention relates to an automobile brake pedal mechanism and a pedal feel simulator thereof. The brake pedal mechanism comprises a brake pedal, a pedal displacement sensor, the pedal feel simulator, a microwave distance-measuring radar, a central processing unit and the like, wherein the pedal displacement sensor adopts two variable resistors for identifying the brake intention of a driver; the pedal feel simulator is based on a magnetorheological fluid principle; the central processing unit can controls the voltage volume of a coil and adjusts the damp of the simulator according to the pedal speed or distance information of front vehicles, people or barriers provided by the microwave distance-measuring radar, so that the driver has excellent operation feel, and the stability, comfortand safety of brake can be improved. Meanwhile, by changing the set value in the central processing unit, the damp output curve of the pedal feel simulator can be adjusted to meet requirements of different vehicle models or drivers. The automobile brake pedal mechanism and the pedal feel simulator thereof have the advantages of simple structure, quick response, good adaptability and the like, andis convenient in operation,.

A bicycle hydraulic brake actuation device includes a hydraulic master cylinder housing having a bore and a push rod guide surface, a master piston and a radial seal received in the bore, a push rod and a lever. The push rod is supported by the push rod guide surface for sliding movement within the hydraulic master cylinder housing. The push rod is configured to move the master piston and the radial seal from a neutral position to a braking position. The lever is pivotally attached to the housing for pivotal movement between an at rest position and a brake actuation position. The lever is also configured and arranged to move the push rod and the master piston from the neutral position toward the braking position as the lever is pivoted between the at rest position and the brake actuation position.

A bicycle hydraulic brake actuation device includes a hydraulic master cylinder housing having a bore, a master piston and a radial seal received in the bore a push rod and a lever. The push rod is configured to move the master piston and the radial seal between a neutral position and a braking position. The lever is pivotally attached to the housing for pivotal movement between an at rest position and a brake actuation position. The lever includes a contact surface configured and arranged to move the push rod as the lever is pivoted between the at rest position and the brake actuation position. Further, the push rod includes at least one roller configured to contact to the contact surface of the lever.

An independent suspension (10) of a vehicle includes a knuckle (22) intended to carry a wheel (W), a damper (12) connected at a bottom end thereof to the knuckle (22), and a plurality of arms (14, 24) connected to a body (B) of the vehicle and the knuckle (22). A hinge device (30; 34) is interposed between the damper (12) and knuckle (22) to allow the damper (12) and knuckle (22) to rotate relative to each other about an axis of articulation (H) that is oriented to form an acute angle with a horizontal. A torsional stiffness control device (32; 34; 34, 70) is interposed between the damper (12) and knuckle (22) to control torsional stiffness of an articulated connection between the damper (12) and knuckle (22) about the axis of articulation (H).

The invention relates to a carbon-ceramic composite brake disc and a preparation method thereof and belongs to the technical field of preparation of carbon-ceramic composites and brake discs. The carbon-ceramic composite brake disc comprises the following components by mass percent: 12% to 20% of short carbon fiber, 20% to 45% of matrix carbon, 30% to 55% of SiC and 2% to 6% of Si, wherein the short carbon fiber is 15-30mm in length. The method comprises the following steps: carbonizing a carbon fiber-reinforced blank body with the density of 0.9g / cm<3> to 1.3g / cm<3> so as to obtain a porous carbon / carbon (C / C) body; then performing dipping on the porous C / C body, cross-linking solidification and splitting decomposition so as to generate a SiC base body on the matrix carbon; performing the dipping, the cross-linking solidification and the splitting decomposition again until the density of an obtained C / C-SiC composite blank body reaches 1.6-1.9g / cm<3>; and performing silicon leaching treatment on the C / C-SiC composite blank body and anti-oxidation treatment and assembling, thus obtaining the carbon-ceramic composite brake disc. According to the method provided by the invention, the difficult problem that a metal brake disc is poor in thermal dissipation and abrasion resistance and heavy in weight in the prior art is effectively solved. The preparation method is simple; and the obtained carbon-ceramic composite brake disc is high in thermal stability, light in weight and resistant to abrasion, and cannot generate thermal vibration.

The invention discloses a platoon driving method, a vehicle and a system. The present invention is applied to a vehicle, and the vehicle is provided with a matrix brake light, and the matrix brake light is used to display the braking mode of the vehicle and the braking level corresponding to the braking mode; by acquiring the image of the preceding vehicle ; Carry out brake light recognition on the image of the preceding vehicle, obtain the braking method of the preceding vehicle and the corresponding braking level of the braking method of the preceding vehicle; control the vehicle according to the braking method of the preceding vehicle and the corresponding braking level; braking level. Among them, since the corresponding braking is performed based on the vehicle's own perception of the braking method and braking level of the vehicle in front, it is not necessary for the vehicle to send information to the cloud for processing and then perform braking according to the cloud command, which shortens the braking delay and speeds up the braking process. Brake response speed improves the safety of vehicles when driving in platoon.

The invention relates to a brake pedal feel flexibly settable electro-hydraulic composite braking system which comprises a hydraulic braking subsystem (1). The hydraulic braking subsystem (1) is formed by an integrated braking main cylinder assembly (10) and a hydraulic control unit (30). The brake pedal feel flexibly settable electro-hydraulic composite braking system also comprises a composite braking control unit RBS (Regenerative Braking System) and a motor regenerative braking subsystem (3). The hydraulic braking subsystem (1), the composite braking control unit RBS and the motor regenerative braking subsystem (3) are sequentially connected. Compared with the prior art, the brake pedal feel flexibly settable electro-hydraulic composite braking system has the advantages of being compact in structure and simple to achieve and enabling pedal force and displacement stroke characteristics to be flexibly adjusted with signals of a pedal feel hydraulic sensor and a pedal displacement sensor as feedback by changing brake pedal feel to simulate pulse width modulation of an electromagnetic valve according to different target vehicles and audiences.

The invention provides a magnetically levitated train and a hydraulic brake device thereof. The hydraulic brake device of the magnetically levitated train comprises a main pipeline, a brake pipeline and a reducing valve, a two-position three-way electromagnetic valve, a first one-way valve and a second one-way valve which are arranged on the main pipeline. An inlet of the reducing valve is communicated with an energy accumulator of the magnetically levitated train, an outlet of the reducing valve is communicated with a port P of the two-position three-way electromagnetic valve, a port A of thetwo-position three-way electromagnetic valve is communicated with an inlet of the first one-way valve and an outlet of the second one-way valve separately, and a port T of the two-position three-wayelectromagnetic valve is communicated with a hydraulic oil tank of the magnetically levitated train; an outlet of the first one-way valve and an inlet of the second one-way valve are communicated withhydraulic driving oil cylinders of brake clamps of the magnetically levitated train through the main pipeline and the brake pipeline. According to the magnetically levitated train and the hydraulic brake device thereof, the brake response speed is increased.

The invention discloses a method and system for controlling automatic parking of a vehicle, a vehicle and a storage medium, wherein the vehicle includes an electric power-assisted braking system, and the method includes: the vehicle controller of the vehicle obtains the state information of the vehicle; The status information judges whether the vehicle meets the static parking conditions; the vehicle controller controls the electric power brake system to brake when the vehicle meets the static parking conditions. The method and system for controlling automatic parking of a vehicle and the vehicle of the present invention can improve the response speed of parking control, have low noise, and improve driving comfort for users.