| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 701083000 | Control of brake pressure | 20 |
| 20080221771 | Method for Controlling Rotation Speed - A method for controlling the rotational speed of at least one rotating element in a vehicle's drive line is provided. A first control model and a second control model are defined. The first control model calculates a permitted slippage of at least one of the vehicle's ground-engaging elements at its point of contact with the ground, which ground-engaging element is driven via the rotating element. The second control model calculates a torque delivered to the said ground-engaging element. The result of one of the said control models is utilized for controlling the rotational speed of the rotating element. | 09-11-2008 |
| 20080234912 | Vehicle Roll Mitigation Through Wheel Slip Controls - A method is provided for counteracting a roll moment in a vehicle rollover event. A potential occurrence of the rollover event is detected over an outside wheel. The potential rollover occurrence event is detected when a tire lateral force is greater than a lateral acceleration force. A braking torque is applied to at least one outside wheel (rear outside, front outside or both outside wheels) for producing a longitudinal wheel slip on the at least one outside wheel wherein the longitudinal wheel slip increases a longitudinal force acting on the at least one outside wheel, cooperatively producing a vehicle yaw for off setting an oversteering condition. The peak lateral friction is reduced between a tire coupled to the at least one outside wheel and an underlying road surface in order to reduce the peak lateral friction and the roll moment. | 09-25-2008 |
| 20090012690 | Vehicle Descent Control - Vehicle descent is controlled in at least one implementation by comparing an engine braking torque to a target engine braking torque, and controlling one or more vehicle brakes to maintain the engine braking torque substantially at the target engine braking torque. The target engine braking torque may be varied as a function of one or more factors or conditions, such as accelerator position or brake application pressure. | 01-08-2009 |
| 20090063002 | VEHICLE MOTION CONTROL DEVICE AND CONTROL METHOD - A vehicle motion control device and method computes a size of a using friction circle in each of wheels by multiplying a size of an each wheel friction circle indicating a maximum generating force in each of the wheel tires by a previously computed each wheel using percentage, computes the each wheel tire generating force and the each wheel using percentage indicating a rate with respect to an upper limit value of a μ-using efficiency in each of the wheels, on the basis of a target vehicle body force and moment indicating a target vehicle body longitudinal force, a target vehicle body transverse force and a target yaw moment, and the computed size of the using friction circle, and controls a vehicle motion in such a manner that the computed each wheel tire generating force is obtained on the basis of the computed each wheel tire generating force, thereby minimizing an upper limit of the μ-using efficiency in each of the wheels. | 03-05-2009 |
| 20090112436 | TRACTION STEER DETECTION AND COMPENSATION - A system, method, and computer program product for detecting and compensating for a traction steer event is provided. A first wheel speed of a first driven wheel is compared with a second wheel speed of a second driven wheel to determine whether a wheel slip condition has occurred. If a wheel slip condition is determined to have occurred, a current operating state of a vehicle is compared to an expected operating state of the vehicle to determine if a traction steer event has occurred. If a traction steer event is determined to have occurred, brake pressure is selectively applied to the first or second driven wheel to compensate for the traction steer event. | 04-30-2009 |
| 20090326777 | Slip Suppression Control System for Vehicle - A slip suppression control system for a vehicle includes a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel and a rear wheel, and a traction control unit configured to initiate initial traction control for reducing a driving power of a drive wheel when a threshold determiner unit determines that the monitored value exceeds a first slip threshold and to execute continued traction control such that the driving power is reduced when the threshold determiner unit determines that the monitored value exceeds a second slip threshold smaller than the first slip threshold, while the driving power is increased when the threshold determiner unit determines that the monitored value is smaller than a gripping threshold which is the second slip threshold or smaller. | 12-31-2009 |
| 20100138129 | HILL START ASSISTANCE METHOD FOR MOTOR VEHICLES - A hill start assistance method for a user of a vehicle having a braking system and an electronic braking control, provided with at least one master cylinder pressure sensor, whereby the pressure on each caliper of the vehicle can be controlled. The method includes: estimating the torque transmitted by the clutch, recording information corresponding to the value of the master cylinder pressure resulting from a user's actuation of the brake pedal, and recording the information recorded corresponding to the value of the master cylinder pressure when the user actuates the brake pedal again by pressing harder on the pedal or partially releasing same. When the user releases the brake pedal fully, the braking system maintains the pressure on the calipers for a predetermined period of time, as a function of a pressure set value equal to the value of the last item of information recorded. | 06-03-2010 |
| 20110082633 | TRACTION CONTROL SYSTEM AND METHOD - A traction control system includes a master cylinder containing brake fluid, braking devices configured to apply braking force to associated wheels of the vehicle, a brake pedal operable by a driver of the vehicle to generate braking force by pressurizing the brake fluid, and means for storing pressurized brake fluid to apply and temporarily hold a braking force at a slipping driven wheel. A method of providing traction control for a vehicle includes manually switching the vehicle from a normal operating mode to a traction control mode, sensing the slippage of a driven wheel, applying a braking force to the slipping driven wheel in response to a driver of the vehicle pressing a brake pedal, maintaining the braking force on the slipping driven wheel after the brake pedal is released, and gradually releasing the braking force as the slipping driven wheel gains traction. | 04-07-2011 |
| 20120130616 | METHOD FOR TRACTION CONTROL OF A MOTOR VEHICLE AND TRACTION CONTROL SYSTEM - Disclosed is a traction control system and method for a vehicle having at least one driven wheel (R, L) with an associated wheel brake, an engine, and an electronic controller encompassing at least two linear sub-controllers designed for different coefficient of friction situations. Each of the at least two linear sub-controllers (C | 05-24-2012 |
| 20120303236 | Controlling Wheel Hop in a Vehicle Axle - A method for controlling wheel hop at a vehicle axle includes determining that one of a difference between average front and rear wheel speeds exceeds a reference difference, a frequency of a signal produced by an accelerometer mounted on the axle exceeds a reference frequency, and a frequency of a lock ring torque exceeds a second reference frequency; pulsing pressure in the wheel brakes of the axle; and reducing engine torque. | 11-29-2012 |
| 20130090828 | METHOD FOR STABILIZING A TWO-WHEELED VEHICLE HAVING A LATERALLY SLIPPING REAR WHEEL - In a method for stabilizing a two-wheeled vehicle in driving situations in which the two-wheeled vehicle oversteers, a variable describing the oversteering of the two-wheeled vehicle is ascertained and, if the variable exceeds a predefined threshold value, a control is carried out, a steering torque being applied to the steering of the two-wheeled vehicle and/or the brake pressure which acts on the front wheel brake being reduced or increased and/or the driving torque on the rear wheel being reduced or increased and/or the brake pressure on the rear wheel being increased or reduced. | 04-11-2013 |
| 20130103281 | Motorcycle traction control system - A traction control system for two and three wheeled motorcycles that prevents or limits the rear wheel(s) from slipping when the operator accelerates the vehicle. If the torque supplied by the motor exceeds the tractive force developed between the rear tire(s) and the road surface the rear tire(s) will slip creating a dangerous condition. The operator engages the system and selects the degree of desired traction control. The system detects rear (driven) and front (non-driven) wheel rotational speeds. If the rear wheel(s) begins rotating faster than the front wheel(s) the traction control computer will send a signal to the motor control unit to reduce the motor's power output. Additionally, as the operator applies the throttle the traction control computer sends a signal is sent to the rear suspension to stiffen for the purpose of more efficiently transmitting power to the rear wheel(s) and road surface. | 04-25-2013 |
| 20140025274 | Electronically Controlled Speed Limiting System For Turf Care Machine - An electronically controlled speed limiting system for a turf maintenance machine includes at least one traction motor rotating a wheel. At least one hydraulic pump in fluid communication with the traction motor provides hydraulic fluid to operate the traction motor. At least one actuator in fluid communication with the hydraulic pump varies an output of the hydraulic pump. A controller in communication with the actuator commands the actuator to control the output of the hydraulic pump and thereby an operating speed of the wheel. A brake is activated by the controller if a wheel speed sensor signals the wheel is slip-spinning, to mitigate turf damage. A steering position sensor signal is used by the controller to modify brake activation during machine turns. An inclinometer signal is used by the controller to automatically reduce machine speed on inclined surfaces. | 01-23-2014 |
| 20140200787 | Vehicle Dynamics Control Device - A vehicle dynamics control device includes a control unit that executes braking/driving torque control based upon vehicle information that includes operation input information and vehicle dynamics information. The operation input information includes a lateral motion operation index pertaining to a lateral motion operation executed to generate a lateral motion in the vehicle; the vehicle dynamics information includes a longitudinal acceleration generated in the vehicle and a lateral motion index indicating a lateral motion occurring in the vehicle; and the control unit determines a handling assurance acceleration limit with a maximum longitudinal acceleration value that assumes a substantially linear proportional relationship with the lateral motion operation index and the lateral motion index over a range in which the lateral motion operation index assumes a value equal to or less than a predetermined value or the lateral motion index assumes a value equal to or less than a predetermined value. | 07-17-2014 |
| 20140277985 | TRACTION CONTROL FOR POWER MACHINE - A disclosed power machine has a power source with a rotational output that drives a first axle assembly with first and second wheels with one of the first and second wheels being a sensed wheel. Wheel speed and rotational speed sensors monitor the rotation speed of the first sensed wheel and the rotational output, respectively. A controller communicates with the wheel speed sensor, the rotational output speed sensor, and a braking system that is operable to brake the first and second wheels. A controller calculates, as a function of the sensed wheel and rotational output speeds, a traction score indicative of whether one of the first wheel and second wheel is slipping and signals to the braking system to brake the first wheel when the traction score indicates that the first wheel is slipping and brake the second wheel when the traction score indicates that the second wheel is slipping. | 09-18-2014 |
| 20150134220 | BRAKING PRESSURE THRESHOLD LIMITING METHOD OF BRAKE TRACTION CONTROL SYSTEM - Disclosed is a braking pressure threshold setting method of a brake traction control system. The method includes steps of: determining whether a slip occurs in a driving wheel; initiating a BTCS control when the slip occurs in the driving wheel; determining whether instability occurs in a high-frictional driving wheel; cumulatively calculating a braking pressure applied to the low-frictional driving wheel; comparing the cumulatively calculated braking pressure value and a pre-set braking pressure threshold of the low-frictional driving wheel; and, when the cumulatively calculated braking pressure value exceeds the pre-set braking pressure threshold of the low-frictional driving wheel, setting the braking pressure applied to the low-frictional driving wheel when the slip occurs in the high-frictional driving wheel, as the threshold. Thus, it is possible to prevent the braking pressure exceeding the pre-set threshold from being applied to the low-frictional driving wheel when climbing a slope road formed with a split road surface such that a climbing performance can be improved. | 05-14-2015 |
| 20150360657 | BRAKE TRACTION CONTROL SYSTEM AND CONTROL METHOD THEREOF - A brake traction control system (BTCS) and a control method thereof are disclosed. The BTCS includes a wheel speed sensor to detect a wheel speed of each of wheels, a calculation unit to calculate a spin amount of the wheel based on the wheel speed of each wheel detected through the wheel speed sensor, and a control unit to calculate a spin amount of a control target wheel and a spin amount of a non-control target wheel opposite to the control target wheel through the calculation unit during a BTCS control, determine whether a hunting phenomenon has occurred based on the calculated spin amount of the non-control target wheel and a spin amount difference between the calculated spin amount of the control target wheel and the calculated spin amount of the non-control target wheel, and decrease a brake pressure of the control target wheel when the hunting phenomenon has occurred. | 12-17-2015 |
| 20160046267 | VEHICULAR BRAKE CONTROL DEVICE - For traction control, different filters, i.e., a hydraulic-pressure-increase filter and a hydraulic-pressure-decrease filter, are provided for increasing and decreasing target pressure, respectively. The inhibiting effect that the hydraulic-pressure-increase filter exhibits with respect to target pressure changes is made less than the inhibiting effect that the hydraulic-pressure-decrease filter exhibits with respect to changes in the target pressure, and so the target pressure is increased quickly but decreased slowly. As such, even if the wheel-cylinder pressure decreases subsequent to the actual wheel-cylinder pressure having increased to follow the target pressure, the wheel-cylinder pressure decreases only gradually, reducing the amount of pressure increase needed to reach the target pressure when the wheel-cylinder pressure is next increased. The wheel-cylinder pressure can thus be increased sufficiently to reach the target pressure with a high degree of responsiveness, making it possible to prevent being unable to increase the wheel-cylinder pressure accurately due to low pressurization performance. | 02-18-2016 |
| 20160090095 | VEHICLE CONTROL UNIT - The embodiment provides a vehicle control unit including a road surface friction coefficient estimation module. The road surface friction coefficient estimation module estimates a road surface friction coefficient based on a parameter other than a body speed. The vehicle control unit further includes first and second torque increment setting modules. The first second torque increment setting module sets an initial value of a torque increment to be used in the torque control when a start thereof is detected. The initial value of the torque increment is set based on the road surface friction coefficient. The second torque increment setting module sets a current value of the torque increment after the initial value has been set. The current value of the torque increment is set based on the previous value thereof and a change in the slip amount. | 03-31-2016 |
| 20160200300 | VEHICLE CONTROL DEVICE | 07-14-2016 |
