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| Number | Title | Issue Date |
| 7262688 | Wheel-state obtaining apparatus, and wheel-position-information obtaining method A wheel-state obtaining apparatus including wheel-side devices each operable to transmit wheel-side information in response to an abrupt change of a tire air pressure of a corresponding one of wheels, when the tire air pressures of the wheels are abruptly changed in... | 08/28/2007 |
| 7125086 | Vehicle dynamics control system In a vehicle dynamics control (VDC) system for a four-wheel-drive vehicle employing a brake control system regulating braking forces applied to road wheels independently of each other and a differential mechanism controlling a differential motion between front and r... | 10/24/2006 |
| 6961648 | System and method for desensitizing the activation criteria of a rollover control system A method of densensitizing includes determining a relative roll angle, determining when the vehicle is in a transitional maneuver, and when the vehicle is in a transitional maneuver, setting a roll signal for control to the relative roll angle, reducing control effo... | 11/01/2005 |
| 6865470 | Traction distribution control system for four-wheel drive vehicle A traction distribution control system for a 4WD vehicle is constructed to calculate a difference gain in accordance with a difference in spinning state between main driving wheels, and determine a control signal for controlling traction distribution to driven wheel... | 03/08/2005 |
| 6820947 | Method and device for controlling a braking action of at least one wheel brake of a four-wheel-drive motor vehicle Method and device for controlling the braking action of at least one wheel brake of a four-wheel-drive motor vehicle having at least one rear axle and one front axle. A first rpm signal representing the speeds of rotation of the front-axle wheels and a second rpm si... | 11/23/2004 |
| 6732036 | Method and apparatus for controlling a drive unit A method and an apparatus for controlling a drive unit, in which, when drivetrain oscillations are present, a reduction of the torque takes place until they have decayed. In addition, the torque value at which the oscillations occurred is stored. If the torque excee... | 05/04/2004 |
| 6564140 | Vehicle dynamics control system and vehicle having the vehicle dynamics control system A correction factor setting unit sets correction factors for a front-rear traction distribution control unit, an anti-lock brake control unit, a traction control unit, and a braking power control unit according to the situation of a road and the shape the... | 05/13/2003 |
| 6466857 | Drive wheel traction control during vehicle stability enhancement events A traction control for a motor vehicle derives a target delta velocity as the sum of a longitudinal velocity of the vehicle and a target delta velocity derived from one or more of a longitudinal acceleration, a lateral acceleration and a turn curvature. T... | 10/15/2002 |
| 6360156 | Method and system of determining an acceptable torque level to be applied to at least one clutch pack of an automobile A method is provided for determining an acceptable torque level to be applied to at least one clutch pack (of an automobile) which includes the requirement of internal slip to transmit torque. The automobile includes a plurality of wheels. A velocity is s... | 03/19/2002 |
| 6076898 | Braking control system for a four-wheel drive vehicle The present invention is directed to a braking control system for controlling a braking force applied to each of front and rear wheels of a four-wheel drive vehicle, which has a front differential gear connected to the front wheels, a rear differential ge... | 06/20/2000 |
| 5978726 | Driving torque control method and apparatus for a four-wheel drive vehicle A wheel speed differential with another wheel of each of several wheels is determined as a parameter for brake-adjustment use, and driving torque conveyed respectively from an engine to the several wheels is adjusted by braking torque determined on a basi... | 11/02/1999 |
| 5615935 | ABS control for a four wheel drive vehicle experiencing axle oscillations Under conditions which indicate all wheels are unstable, all have been in pressure decrease for a long time, and the vehicle reference velocity has been continuously negatively corrected for a long time, recovery are flags set on all wheels. If all recove... | 04/01/1997 |
| 5599075 | Anti-skid brake control system for four-wheel drive vehicles An anti-skid brake control system for a four-wheel drive vehicle employs a transfer which distributes a driving torque to front and rear differentials, a front-wheel mean revolution-speed sensor, a rear-wheel mean revolution-speed sensor, and a four-wheel... | 02/04/1997 |
| 5586815 | Method and system for detecting false four-wheel drive indication in antilock brake systems A method and system for detecting an incorrect indication of front-rear locked four-wheel drive operation of a vehicle capable of both front-rear locked four-wheel drive and unlocked two-wheel drive. The relative speed difference, defined as the absolute ... | 12/24/1996 |
| 5531515 | Auxiliary brake system for four-wheel-drive vehicle An auxiliary brake system for a four-wheel-drive vehicle is disclosed whose main components of the present invention are four solenoid valves. These valves are located under the body of the vehicle, and are affixed in communication with the existing vehic... | 07/02/1996 |
| 5083631 | Slip control apparatus for a four wheel drive vehicle Disclosed is a four wheel drive vehicle with four wheels drivable, which is provided with a first slip control apparatus for reducing a driving force to the wheels by operating a brake mounted on each of the wheels and with a second slip control apparatus... | 01/28/1992 |
| 4961476 | Arrangement for controlling the power transmission to at least two axles of a motor vehicle The arrangement controls a friction element for limiting a rotational speed compensation between the axles of a two-axle or all-wheel-driven vehicle as a function of the difference of the medium wheel speeds of both axles (longitudinal speed difference). ... | 10/09/1990 |
| 4936404 | Vehicle traction control system providing two or more different drive modes at the driver's option A wheel slip responsive traction control system particularly well suited for use with a four wheel drive vehicle having a hydraulic brake control mechanism for individually controlling a fluid pressure acting on a brake on each drive wheel. The traction c... | 06/26/1990 |
| 4849891 | Device for propulsion control for a motor vehicle with all-wheel drive A propulsion control device for a motor vehicle which has a permanently balanced all-wheel drive, wherein the drive slip thresholds at which the control responds in the sense of a braking action, is increased as a function of the velocity and decreased as... | 07/18/1989 |
| 4753312 | Slip-controlled brake system for motor vehicles with four-wheel drive A slip-controlled brake system for motor vehicles with four-wheel drive, wherein one axle (VA) is driven permanently, and the second (HA) is driven by a differential-slip-sensitive coupling (6). The system comprises sensors (S1 to S4) for determining the ... | 06/28/1988 |
| 4747643 | Motor vehicle having two driven axles and brake system A motor vehicle comprises two driven axles (5, 8), which are interconnected by an interaxle coupling (10) for transmitting a torque only when the halves of the coupling (10) rotate at different speeds and by a speed-changing transmission (9) connected in ... | 05/31/1988 |
| 4589511 | All-wheel drive automotive vehicle traction control system To prevent spinning of wheels in all-wheel vehicles, a traction control system is used which, in its simplest form, may use existing wheel speed sensors. If any one, or more, or all of the wheel speed sensors provide output signals representative of spinn... | 05/20/1986 |
| 4538700 | Four-wheel drive system with deceleration-responsive center differential control A four-wheel drive system has a center differential between front and rear wheels, and differential restraining or locking means for restraining or locking the center differential. The four-wheel drive system is equipped with an automatic control system f... | 09/03/1985 |
