9013 results about "Brake force" patented technology

Smart Active Tyre Pressure Optimising System [TPOS]102 is a highly time sensitive design and technique that acts instantaneously in sensing and controlling the tire pressure particularly in imminent and inevitable critical driving situations to reduce emergency & high speed breaking distance, mitigate—loss of traction, hydroplaning, roll over, loss of stability, over & under steering, break failure, loss of control due to puncture by smartly sensing, perform context aware computing and directing the Tyre Pressure Control Units [TPCU]104 to instantaneously control the tyre pressure in right time with right pressure on right tyres thereby actively controlling the footprint and sidewall deformation rate to enhance traction & stability simultaneously sustaining drivability or steerability ultimately to avoid or reduce the impact of collusion and overcome or mitigate critical situations for protecting the vehicles, occupants, pedestrians and other objects around or on the way; also according to design, configurations and scenarios the system instantaneously optimises the tyre pressure on all tyres for further safe driving till next restoration else restores the pressure to optimum preset value utilising inbuilt reservoir or other external restoration systems immediately after the vehicle overcomes the critical situation to continue with safe and comfortable driving. In critical situations TPOS performs sensing, pre computing, current computing for controlling the tire pressure during critical situation, post computing to optimise tire pressure after overcoming accordingly. TPOS 102 utilise smart and adaptive closed loop processing algorithm with predetermined and tested lookup table to instantaneously check and compare the effects between predetermined and tested real world scenarios to the actual real world scenarios for actively sensing, computing and controlling the tire pressure accordingly to mitigate the critical situations. The controlling of tyre pressure is computed mainly based on parameters comprising of sensor system, vehicle safety and stability systems, nature of breaking & break force distribution, tires upper & lower cut-off pressure values, sensing reservoirs and tires internal & external pressure, temperature, moisture, humidity, wheel & tire specifications, vehicle & wheel speed, acceleration & deceleration, vehicle orientation & axial rotation, transverse motion & lateral acceleration, tires position or angle of attack, load & torque distribution, tire traction, steering position, cornering effects, change in Centre of gravity, over & under steering, hydroplaning, sensing road conditions, etc and to further enhance the efficiency, the system interoperates with vehicles existing safety and stability systems like ABS, EBD, ESC, TCS, Rollover mitigation systems, ECU, BA, Precrash systems, suspension & vertical dynamics, radar assisted auto breaking, cruise control system, aerodynamics & airbrakes etc. Other aspects of present invention are controlling the tire temperature according to environmental temperature, moisture and humidity thereby to enhance traction and vary tire pressure according to change in centre of gravity & load, driving modes—comfort, standard and sports modes.

A rotary shaft (3) and a rotation driven member (4) are so connected as to be capable of transmitting motive power when the rotary shaft (3) rotates relatively to the rotation driven member (4). A roller (6) gets displaced to a first position where a frictional force with an outer race (5) and the rotation driven member (4) decreases, thereby permitting transmission of a rotational force from the rotary shaft (3) to the rotation driven member (4). When the rotation driven member (4) rotates relatively to the rotary shaft (3), the roller (6) gets displaced to a second position where the frictional force with the outer race (5) and the rotation driven member (4) increases, thereby rotationally fixing the rotation driven member (4) with respect to the outer race (5). The power transmission from a brake apparatus (e.g., a parking brake apparatus) to an electric motor (2) can be hindered while permitting the power transmission to the brake apparatus from the electric motor (2) by using neither a worm exhibiting a relatively low transmission efficiency nor a worm wheel. In a state where the brake apparatus exhibits its braking force, the roller (6) receives the force from the brake apparatus and is thereby biased toward the second position, whereby a construction of a power transmission mechanism (50) can be simplified and costs can be reduced to such an extent.

A brake apparatus for a vehicle generally sets an upper limit value of regenerative braking force to the maximum value of the regenerative braking force which can be generated at the present. In the case of a front-wheel-drive vehicle, the total braking force, the sum of front-wheel braking force (front-wheel hydraulic braking force+regenerative braking force) and rear-wheel braking force (rear-wheel hydraulic braking force), is rendered coincident with a target braking force corresponding to a brake pedal depressing force, and the regenerative braking force is set to a largest possible value equal to or less than the upper limit value. As a result, the regenerative braking force can be larger than front-wheel-side target distribution braking force. The upper limit value is decreased from the maximum value by an amount corresponding to the degree of easiness of occurrence of a locking tendency at the driven wheels (front wheels).

An apparatus, method, system and / or image editing process for presenting visual displays to the driver of a motor vehicle regarding the real time operating condition of the vehicle systems and components. These include the anti-lock braking system, the stability of the vehicle as to proximity to rolling over, the power consumed by vehicle components such as the heating system and lights and / or, for four-wheel drive vehicles, the torque and / or braking forces delivered to the wheels. The information is acquired from sensors and / or from signals generated by the vehicle and it processed by the vehicle CPU or, in another embodiment, by a display CPU, the information being presented in black and white or in color using an LED, LCD, vacuum fluorescent means, numerical display, gauge, meter or PDA.

A process for operating the brake arrangement of a vehicle is presented, which comprises an electrically controllable service brake system, which is set to generate brake forces independently of driver actuation, and which comprises an electrically controllable parking brake system, which is set to generate brake forces and maintain these forces. So that the parking brake system or its electromechanical actuating unit only needs to cope with relatively small load situations, it is proposed that, when, for certain operating conditions, the parking brake system has to maintain brake forces which are greater than the brake forces it is able to generate itself, the service brake system generates the additionally required brake forces.