US Patent No: 4,765,649

Number of patents in Portfolio can not be more than 2000

System for vehicle body roll control detecting and compensating for changes of loaded vehicle weight

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Abstract

In this system for vehicle roll control, a suspension device or an actuator is provided corresponding to each wheel of a vehicle, and resiliently suspends it from the vehicle body. Each such suspension device can alter its hardness or softness characteristics according to a control signal, while similarly the actuators are adapted to alter the suspended height of their wheels. A vehicle speed detecting device senses road speed, a steering angle detecting device senses steering angle, and a device detects the total vehicle body weight. A computing control device computes a predictive roll angle of the vehicle body from road speed and steering angle, and: if suspension devices are provided, controls them to be relatively hard when the absolute value of the predictive roll angle is larger than a threshold value, while controlling them to be relatively soft when the absolute value of the predictive roll angle is less than this threshold value; while, if actuators are provided, when the absolute value of the predictive roll angle is larger than a threshold value, it controls them in accordance with this predictive roll angle. Particularly, this computing device varies the threshold roll angle value according to the total vehicle body weight as detected by the weight detector, so as to decrease the threshold roll angle value along with increase of the total vehicle body weight.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TOYOTA JIDOSHA KABUSHIKI KAISHAAICHI-KEN12954

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Doi, Shunichi Aichi, JP 30 649
Hayashi, Yasutaka Seto, JP 23 512
Ikemoto, Hiroyuki Saitama-ken, JP 32 522
Oowa, Nobutaka Toyota, JP 6 222

Cited Art

Patent Info (Count) # Cites Year
 
TOYOTA CENTRAL RESEARCH AND DEVELOPMENT LABORATORIES, INC. (1)
4,693,493 System for vehicle body roll control utilizing steering angle detection 43 1986

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
FORD GLOBAL TECHNOLOGIES, LLC (35)
6,631,317 Attitude sensing system for an automotive vehicle 54 2001
6,556,908 Attitude sensing system for an automotive vehicle relative to the road 80 2002
6,718,248 System for detecting surface profile of a driving road 42 2002
6,684,140 System for sensing vehicle global and relative attitudes using suspension height sensors 19 2002
6,834,218 Roll over stability control for an automotive vehicle 36 2003
7,136,731 System for determining vehicular relative roll angle during a potential rollover event 4 2003
7,233,236 Passive wheel lift identification for an automotive vehicle using operating input torque to wheel 6 2003
7,132,937 Wheel lift identification for an automotive vehicle using passive and active detection 10 2003
7,109,856 Wheel lifted and grounded identification for an automotive vehicle 7 2003
6,904,350 System for dynamically determining the wheel grounding and wheel lifting conditions and their applications in roll stability control 13 2003
7,194,351 System and method for determining a wheel departure angle for a rollover control system 2 2003
7,085,639 System and method for characterizing the road bank for vehicle roll stability control 5 2003
7,003,389 System and method for characterizing vehicle body to road angle for vehicle roll stability control 3 2003
7,085,642 Method and system for correcting sensor offsets 6 2003
7,430,468 System and method for sensitizing the activation criteria of a rollover control system 2 2003
6,941,205 System and method for deteching roll rate sensor fault 2 2003
7,027,902 Enhanced system for yaw stability control system to include roll stability control function 5 2003
7,239,949 Integrated sensing system 21 2004
7,079,928 System and method for determining a wheel departure angle for a rollover control system with respect to road roll rate and loading misalignment 12 2004
7,653,471 Active driven wheel lift identification for an automotive vehicle 7 2004
RE40496 Attitude sensing system for an automotive vehicle relative to the road 0 2004
7,308,350 Method and apparatus for determining adaptive brake gain parameters for use in a safety system of an automotive vehicle 2 2004
7,451,032 System and method for determining desired yaw rate and lateral velocity for use in a vehicle dynamic control system 3 2004
7,640,081 Roll stability control using four-wheel drive 2 2004
7,668,645 System and method for dynamically determining vehicle loading and vertical loading distance for use in a vehicle dynamic control system 3 2004
7,715,965 System and method for qualitatively determining vehicle loading conditions 1 2004
7,660,654 System for dynamically determining vehicle rear/trunk loading for use in a vehicle control system 1 2004
RE40268 Wheel lift identification for an automotive vehicle 0 2004
7,130,735 Roll over stability control for an automotive vehicle 5 2005
7,480,547 Attitude sensing system for an automotive vehicle relative to the road 7 2005
7,120,528 System and method for operating a rollover control system in a transition to a rollover condition 8 2005
7,590,481 Integrated vehicle control system using dynamically determined vehicle conditions 29 2005
7,136,730 Enhanced system for yaw stability control system to include roll stability control function 9 2005
8,121,758 System for determining torque and tire forces using integrated sensing system 0 2005
7,600,826 System for dynamically determining axle loadings of a moving vehicle using integrated sensing system and its application in vehicle dynamics controls 3 2005
 
FORD GLOBAL TECHNOLOGIES, INC. (14)
5,570,287 Speed dependent suspension control 9 1994
8,352,143 Integrated vehicle control system using dynamically determined vehicle conditions 0 2009
8,346,452 Integrated vehicle control system using dynamically determined vehicle conditions 0 2009
8,311,706 Integrated vehicle control system using dynamically determined vehicle conditions 0 2009
8,005,592 System for dynamically determining axle loadings of a moving vehicle using integrated sensing system and its application in vehicle dynamics controls 0 2009
8,219,282 System for dynamically determining vehicle rear/trunk loading for use in a vehicle control system 0 2009
8,005,596 System for dynamically determining vehicle rear/trunk loading for use in a vehicle control system 0 2009
8,050,857 System and method for dynamically determining vehicle loading and vertical loading distance for use in a vehicle dynamic control system 0 2010
7,877,178 System and method for dynamically determining vehicle loading and vertical loading distance for use in a vehicle dynamic control system 1 2010
7,877,199 System and method for dynamically determining vehicle loading and vertical loading distance for use in a vehicle dynamic control system 0 2010
7,877,200 System and method for dynamically determining vehicle loading and vertical loading distance for use in a vehicle dynamic control system 1 2010
7,877,201 System and method for dynamically determining vehicle loading and vertical loading distance for use in a vehicle dynamic control system 1 2010
7,899,594 System and method for qualitatively determining vehicle loading conditions 2 2010
8,346,433 System for dynamically determining vehicle rear/trunk loading for use in a vehicle control system 0 2012
 
FORD MOTOR COMPANY (5)
5,765,115 Pneumatic tilt stabilization suspension system 11 1995
6,961,648 System and method for desensitizing the activation criteria of a rollover control system 9 2003
7,302,331 Wheel lift identification for an automotive vehicle 10 2003
7,096,103 System and method for operating a rollover control system during an elevated condition 9 2005
7,277,787 System and method for desensitizing the activation criteria of a rollover control system 1 2005
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (5)
4,937,748 Electronic controlled fluid suspension system 29 1988
4,897,776 Electronic controlled fluid suspension system for controlling roll and pitch of a vehicle body 18 1988
4,958,850 Hydraulic circuit system for a vehicle height control device 12 1989
5,024,459 Pressure control system for suspension 9 1989
6,219,601 Vehicle height adjust control apparatus and method 2 1998
 
NISSAN MOTOR CO., LTD. (4)
4,903,209 Height control system in automotive suspension system performing attitude change suppressive control and height regulating control with high response characteristics in height adjustment 28 1988
4,982,979 Active suspension system with enhanced response characteristics hydraulic circuit 6 1989
5,044,662 Active suspension system with enhanced suspension control characteristics at on/off transition of suspension control 11 1990
5,156,645 Working fluid circuit for active suspension system with surge suppression during fail-safe mode operation 8 1990
 
KELSEY-HAYES COMPANY (3)
5,529,324 System and method for vehicle roll control 26 1994
7,226,056 Electro-magnetic vehicle roll control system 4 2004
7,641,208 Vehicle roll control system with self-centering actuator 1 2004
 
HAYES; KELSEY (2)
5,597,180 Vehicle roll control apparatus 18 1994
5,630,623 Vehicle roll control system 24 1996
 
MITSUBISHI JIDOSHA KOGYO K.K. (A.K.A. MITSUBISHI MOTORS CORPORATION) (2)
4,856,813 Vehicle suspension apparatus 1 1988
4,930,082 Control apparatus for a vehicular suspension system 64 1989
 
OXFORD SUSPENSION, INC. (2)
5,137,300 Vehicle suspension with auxiliary leaf spring and squat control system 11 1991
5,129,671 Vehicle suspension with auxiliary leaf spring with load control system 8 1991
 
ATSUGI UNISIA CORPORATION (1)
5,285,876 Adaptive damper control 14 1991
 
CLOUD FARM ASSOCIATES L.P. (1)
5,979,616 Tilt control apparatus for vehicles 2 1998
 
DAIMLERCHRYSLER AG (1)
6,023,220 Vehicle having a scanning system 13 1998
 
KINETIC PTY LTD. (1)
7,637,513 Vehicle suspension system 1 2002
 
LUK FAHRZEUG-HYDRAULIK GMBH & CO. KG (1)
6,039,326 Device for roll stabilization of a motor vehicle 13 1998
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
4,887,840 Suspension control apparatus for a vehicle 19 1988
 
ROBERT BOSCH GMBH (1)
6,527,076 Device and method for limiting a backward rolling speed of a motor vehicle 6 2000
 
ROLLOVER OPERATIONS, LLC (1)
5,825,284 System and method for the detection of vehicle rollover conditions 141 1996
 
SONY CORPORATION (1)
7,747,383 Offset detection of acceleration sensor and navigation system 3 2006
 
TOWER MANUFACTURING CORPORATION (1)
D353579 Momentary switch 1 1993
 
TRW INC. (1)
5,145,206 Semi-active suspension system with energy saving actuator 7 1991
 
VOLVO CAR CORPORATION (1)
6,963,797 System and method for determining an amount of control for operating a rollover control system 9 2003
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (2)
7,533,890 Damping adjusting/controlling system for wireless adjustment of shock-absorbers for vehicle 0 2006
8,442,720 Integrated vehicle control system using dynamically determined vehicle conditions 0 2009