30results about How to "Extend brake life" patented technology

System and method for monitoring the applications of the brakes, e.g. of an aircraft to determine brake condition and operate a brake maintenance programme or charge a brake system user. It is desirable to have accurate information for determining the condition and predicting the life of carbon-carbon brake discs. This is important for safety as well as commercial reasons. The number of landings of an aircraft is often used as a determinant for such as lifetime warranties for brake discs and recommended maintenance periods. However, at least for carbon disc brakes, this may not be entirely accurate. For example such brake discs also wear during taxiing. The system and method herein includes monitoring each actuation of the brakes and making a separate record of each actuation of the brakes in which there is relative movement of the facing friction surfaces that cause wear, and from that separate record determining brake usage. The monitoring may include measuring changes and processing the signals to distinguish between those which fall below and those which are above a threshold value. Herein there is also described, a method and apparatus for monitoring a braking system comprising sensing a plurality of braking parameters having values dependent upon wear in the system and different faults of the system, and identifying and recording wear and faults based on combinations of values of said parameters.

An aircraft brake control system for controlling operation of a plurality of carbon brakes is provided. Each brake includes at least one brake actuator that is responsive to an electrical drive control signal for applying squeeze force to a brake disk stack for effecting a braking torque on a wheel of a vehicle. The control system includes a controller for providing electrical drive control signals to one or more of the brake actuators in response to an input brake command signal from a pilot to effect application of squeeze force to the brake disk stack to effect a braking operation. The brake controller is configured for taxi mode operation during aircraft taxiing to provide electrical drive control signals to one or more of the brake actuators that cause some or all of the brake actuators to provide continued light braking during taxiing even when the controller is not commanded by the input brake command signal from the pilot to effect a braking operation.

The invention relates to a preparation method and application of a carbon/ceramic composite material, in particular to a preparation method and application of a carbon/ceramic composite material needed for braking a high-momentum delivery system. The preparation method includes: using a C/C composite material of 1.2-1.5 g/cm3 in density as a raw material; disposing the raw material in impregnation liquid I for impregnation, pyrolyzing in a protective atmosphere after impregnation, repeating impregnating-pyrolyzing operations until a carbon/ceramic composite material of 1.85-1.9 g/cm3 in density is obtained; treating the carbon/ceramic composite material obtained at high temperature until density of the carbon/ceramic composite material is lowered to 1.82-1.88 g/cm3 to obtain a pre-finished product; disposing the pre-finished product in impregnation liquid II, decomposing in a protective atmosphere after impregnation is completed, polishing after decomposing, and repeating impregnating-decomposing-polishing operations until a carbon/ceramic composite material finished product of 1.93-2.0 g/cm3 is obtained.

A universal wheel cover assembly for covering a variety of different vehicle's wheels. The universal wheel cover assembly comprises: (a) a covering disc sized to cover the vehicle's wheel, (b) a universal bolt pattern plate, said universal bolt pattern plate including (i) a series of sections, each of said sections having a plurality of engagement means, wherein said sections are adapted for matching a pattern of bolts disposed on the vehicle's axel hubs used for attaching the vehicle's wheel, and (ii) a retaining system for connecting the universal bolt pattern plate to the covering disc, and (c) a spring biasing base comprising of a plurality of coil units, each coil unit for coupling one bolt in the pattern of bolts to the engagement means of the universal bolt pattern plate. The removable wheel cover assembly may be used in a variety of different vehicle tire rims and is aesthetically pleasing.

A braking system comprises an axle (23), a support element (22) mounted on the axle, a brake ring (3) connected to the periphery of the support element (22) and a brake calliper (21) for applying a braking force to the brake ring (3). The brake ring (3) is connected to the support element (22) in such a manner that a conductive heat flow path is provided for conducting heat from the brake ring (3) into the support element (22). There is also an airflow path passing through the support element (22) and through the region in which the brake calliper (21) is situated for transferring heat by convection from the brake ring (3) and the brake calliper (21).

The invention discloses a friction material, a brake pad prepared by the friction material and a preparation method of the brake pad. The preparation method of the brake pad comprises the following steps that (1) preparation of a copper-free metal friction material is performed; (2) hot-pressing molding is performed, wherein the copper-free metal friction material in the step (1) is placed in a hot-pressing mold cavity to be spread and flattened, a cushion layer material is put in the hot-pressing mold cavity to be spread and flattened, a steel backing is placed, hot-pressing molding is performed, and then demolding is performed; (3) a demolded sample undergoes heat treatment, and then is cooled to room temperature; and (4) post-treatment is performed on the sample after being treated in the step (3) to prepare the brake pad. According to the preparation method of the brake pad, the storage, transport cycle and oxidation resistance of the friction material in the brake pad can be obviously improved through rust prevention treatment.

The invention discloses an additional brake which comprises a driving chain wheel, a brake disc, a pressing disc, a brake block and a triggering component. The brake disc is arranged between the driving chain wheel and the pressing disc which is pressed on the brake disc, and the pressing disc is connected with the driving chain wheel through a locking component. A protruding block is arranged on the brake disc. The brake block is connected with the triggering component. The brake block and the protruding block are kept in a meshing or separate state through action of the triggering component. According to the additional brake, during braking, the brake block and the protruding block are controlled to be meshed through the triggering component, so that the brake disc is kept static, the driving chain wheel and the pressing disc move relative to the brake disc respectively under the effect of inertia force, finally braking is achieved through kinetic friction force generated on a matching face, when braking is not carried out, the triggering component controls the brake disc to be separated from the protruding block, under the effect of the locking component, the driving chain wheel, the brake disc and the pressing disc operate synchronously, and the additional brake has the advantages to being simple and compact in structure, convenient to arrange and adjust, low in cost, high in assembling efficiency and the like.

Systems and methods for operating a hybrid powertrain or driveline that includes an engine and an integrated starter/generator are described. In one example, rotation of an automatically stopped engine may be inhibited when engine braking is requested so that the engine may not be rotated without providing a desired outcome.

The invention provides a hydrophobic friction material which comprises the following components in percentage by mass based on the total mass of raw material components of the hydrophobic friction material: 4-12% of a hydrophobic binder, 10-20% of a hydrophobic filler, 11-20% of steel fibers, 3-7% of titanium dioxide, 4-11% of amorphous graphite, 4-8% of garnet powder, 1-3% of tungsten sulfide and 21-61% of barite. The hydrophobic friction material has good hydrophobicity, and coefficient reduction of the friction material after the friction material encounters water can be effectively inhibited; and a brake pad prepared from the hydrophobic friction material is stable in friction coefficient, and the braking safety after a vehicle wades into water is guaranteed. The invention further provides a preparation method of the brake pad, the process is simple, and operation is convenient.

The invention being presented uses the motors already included in an electric vehicle to charge its batteries while in tow. The charging process provided by the invention is compatible with the charging speed of current battery technology. It will provide an effective way of charging vehicles in theater, when other sources of electrical energy may not be available.

Moreover, the proposed system can actually extend the brake life of the towing vehicle and improve performance boundaries of the overall system.

The invention provides an ABS system and energy recovery matched brake control method. The method comprises the following steps: 1) acquiring a depth of a brake pedal by a vehicle control unit, and calculating to obtain a brake torque demand T0; 2) making the vehicle control unit communicate with a battery management system to obtain maximum rechargeable power of a continuous current and the maximum rechargeable power of a pulse current; 3) making the vehicle control unit communicate with the motor controller to obtain a motor braking torque T1 of a maximum continuous energy recovery current and a motor braking torque T2 of a maximum pulse energy recovery current; and 4) using the vehicle control unit to determine a braking energy recovery mode according to a wheel locking torque T, a braking torque demand T0, the motor braking torque T1 of the maximum continuous energy recovery current and the motor braking torque T2 of the maximum pulse energy recovery current. In the invention, thebraking energy recovery is carried out in a manner of synchronizing with a braking torque change waveform sent by the ABS auxiliary braking system so that a braking energy recovery rate can be improved to the maximum extent.