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5230396 |
Steering control apparatus
The steering stability of a moving vehicle is maintained by measuring an actual yaw rate of the vehicle and determining a desired yaw rate of the vehicle and producing an output signal in response...
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5224564 |
Hydrostatic power steering system
A power steering system for controlling the dirigible wheels of an automotive vehicle includes a pump that develops a pressure in an accumulator, the pump being deactivated when accumulator...
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5208752 |
Control apparatus for power-assisted steering system
A control apparatus for a power-assisted steering system which includes a servo valve associated with a hydraulic power cylinder to selectively direct the flow of fluid under pressure from a source...
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5204815 |
Electric control apparatus for control of the running characteristic of a wheeled vehicle
An apparatus for estimating a slip angle in a wheeled vehicle having a set of front road wheels and a set of rear road wheels, including the same kind of wheel speed sensors arranged to detect each...
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5184297 |
Method of calibrating power steering for uniform vehicle-to-vehicle steering effort
A power steering unit has an electromagnetic mechanism controlled by a computer-based controller for varying the steering effort in accordance with vehicle speed. The same controller is used to...
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5159553 |
Steering control apparatus
The steering stability of a moving vehicle is maintained by measuring an actual yaw rate of the vehicle and determining a desired yaw rate of the vehicle and producing an output signal in response...
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5152359 |
Reaction pressure control mechanism of power steering apparatus
A reaction pressure control mechanism of power steering apparatus includes a power cylinder, to which a pressure oil discharged from an oil pump is supplied through a control valve, and oil...
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5147009 |
Steering force control apparatus of power steering system
A steering reaction force generating mechanism for generating a reaction force acting on an input shaft is provided within a cylindrical space of a housing between a lower end portion of the input...
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5141069 |
Steering mechanism with toe-in control
The steering stability of a moving vehicle is maintained by measuring an actual yaw rate of the vehicle and determining a desired yaw rate of the vehicle and producing an output signal in response...
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5135069 |
Vehicle rudder angle control apparatus
Apparatus for controlling the steerable wheels of a power-assisted steering unit of a vehicle in which an angle detector is connected to the power assist unit and to a power controller. An...
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5136507 |
System for correctively controlling turning movement of vehicle
A system for correctively controlling the turning movement of a vehicle, including a device for correcting the turning movement of the vehicle, a sensor for detecting the steering angle of a...
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5135070 |
Active hydraulic pressure control
An active hydraulic pressure control system includes a sensor, a valve, a controller and an actuator. In accordance with a broad aspect of the present invention, the controller determines a...
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5123497 |
Automotive apparatus and method for dynamically determining centripetal force of a vehicle
An apparatus and method for determining the centripetal force of an automotive vehicle operating on a roadway includes a vehicle speed measuring mechanism and a steering force measuring mechanism....
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5122958 |
Apparatus for controlling steering force produced by power steering system
An apparatus for controlling the ratio of a assisting force produced by a power steering system installed in an vehicle to a steering torque supplied by the driver wherein the ratio is changed by a...
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5119898 |
Electromagnetic control apparatus for varying the driver steering effort of a hydraulic power steering system
A hydraulic power steering system having conventional relatively rotatable spool and valve body elements for flow regulation, and an integral electromagnetic mechanism which effectively varies the...
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5086862 |
Apparatus for stabilizing power steering for temperature effects
A hydraulically assisted power steering system subject to variance in steering effort due to temperature change is compensated to give consistent response at all temperatures. A hydraulic control...
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5080186 |
Servo-assisted steering system for motor vechicles
A servo assisted power steering system for motor vehicles comprising a steering-wheel shaft (2) which is connected via a rotary slide valve (6, 7, 8) and a worm-gear spindle (4) of a steering gear...
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5078226 |
Power steering apparatus for a vehicle with yaw control
A power steering apparatus for a vehicle having a hydraulic mechanism for generating a force applied to a steering mechanism for reducing a force needed to operate a steering member (wheel). A...
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5072804 |
Power-assisted steering system
A power-assisted steering system for a vehicle such as an automobile or truck and having an electro-mechanical servo drive. The servo drive directs the wheels to be steered which are journalled on...
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5072803 |
Method of setting an assisting force in power-assisted steering
A power-assisted steering method establishes or sets an auxiliary force by taking into account a plurality of variables such as transverse acceleration and vehicle speed characterizing the...
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5064014 |
Method of controlling power steering system
In a method of controlling a power steering system, which controls a steering force in accordance with an engine revolution when no vehicle velocity signal is supplied, after the engine revolution...
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5050697 |
Steering apparatus for automotive vehicle
A steering apparatus capable of changing a steering angle ratio of dirigible road wheels relative to a rotation amount of a steering wheel. The steering apparatus includes an input member arranged...
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5048630 |
Power steering trim control system
A power steering trim control system for use with steering mechanisms provided in automotive vehicles. The trim system includes a flow distribution valve (38) which selectively directs fluid...
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5038878 |
Variable assist power steering apparatus
A control valve for a variable assist power steering apparatus comprises a bypass line having one end connected to one of two parallel fluid flow paths of a distributor circuit at an inflow section...
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5029660 |
Steering control method and control system for wheeled vehicles
A feedback control method and system are provided to accurately control the steering assist level in a vehicle steering system. An electric actuator, such as a solenoid, operates a flow control...
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5027917 |
Power-steering system
A power-steering system for a vehicle includes a steering wheel which turns the front wheels, a power cylinder device which assists the steering wheel in turning the front wheels, a vehicle speed...
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5005659 |
Power assisted steering for vehicles
An electrically propelled vehicle with hydraulic power steering supplied from an electricaly driven pump includes a sensor for sensing any voltage generated in the traction motor of the vehicle,...
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5000277 |
Hydrostatic steering control for a tracked vehicle
A hydrostatic steering arrangement and control having the high speed steering capability of an output-driven system and the low speed steering capability of an input-driven system. The engine...
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4958695 |
Variable assist power steering system
A control valve includes valve elements relatively displaceable in response to a predetermined variable (e.g., a steering torque) to define therebetween two parallel fluid flow paths connected...
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4955443 |
Motor vehicle with all-wheel steering
The invention pertains to a motor vehicle with all-wheel steering, comprising a steerable front axle and a steerable rear axle. Associated with the steerable rear axle is an electrical steering...
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4954957 |
Control system for adapting suspension characteristics and steering characteristics to vehicle driving condition
A control system for an automotive suspension system and a power steering system employs a steering operation pattern as a parameter representative of the vehicle traveling condition and vehicular...
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4951198 |
Friction detecting device for vehicles
A friction detecting device comprising running condition detector for detecting a running condition of a vehicle including a lateral acceleration acting on a gravity center of the vehicle, steering...
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4949265 |
Steering control system for 4WD vehicle having drive torque distribution control
In a 4WD vehicle, a drive control system for controlling a driving force distribution between front and rear wheels is combined with a steer angle control system which applies an auxiliary steering...
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4949261 |
Steering control system for wheeled vehicle
A system for controlling the steering angle of the rear steerable wheels of a vehicle senses the front wheel steering angle, the vehicle speed and a manually selected mode signal for a new mode of...
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4942532 |
System for controlling the steering angle of the rear wheels of a four-wheel-steerable motor vehicle
A system for controlling the steering angle of the rear wheels of a four-wheel-steerable motor vehicle has a controller which steers the rear wheels in a manner to satisfy the following equation:...
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4940105 |
Steering gear for a vehicle
In a steering gear having a steering correction function for causing a vehicle to correct steering when disturbance acts on a power steering gear or the vehicle, there are provided a connecting...
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4940103 |
Power steering system for use in motor vehicle
A power steering system for use in a motor vehicle is disclosed. It comprises a power cylinder; a control valve equipped with a pair of reaction chambers; a hydraulic pump; a reaction passage...
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4941097 |
Steering control methods and apparatus
The steering stability of a moving vehicle is maintained by measuring an actual yaw rate of the vehicle and determining a desired yaw rate of the vehicle. An output signal is produced in response...
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4926956 |
Electronically controlled steering system
A power steering gear mechanism for vehicles with a variable assist characteristic having primary and secondary steering valve portions, the primary portion controlling pressure in a power steering...
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4922427 |
Combined power steering and variable suspension control arrangement
A suspension and steering control system includes a mode selection which enables a normal mode wherein the suspension is conditioned to produce a soft damping and sufficient power assistance to the...
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4913250 |
Control apparatus of power steering device
A control apparatus of a power steering device having a steering force control device for changing a steering force in accordance with a vehicle speed includes a detecting unit for detecting a road...
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4909343 |
Electric power steering system
A hydraulic power steering system is disclosed which has a steering control valve operatively connected to a steering shaft to be actuated by the torsional torque exerted thereon by a steering...
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4905783 |
Vehicular controller with differential wheel speed input
A vehicular control with differential wheel speed input senses and operates with differential rotation of wheel speeds and uses information obtained from individual wheel speed sensors to control...
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4899842 |
Steering force controller for power steering apparatus
A steering force controller for power steering apparatus is disclosed, which controls an oil pressure supplied to an oil pressure reaction chamber in accordance with a position of a spool valve...
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4893239 |
Device for detecting driving condition for automobile
A device for detecting driving condition faced by an operator of an automobile. The device includes an automobile speed sensor, first arithmetic means, second arithmetic means and compensating...
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4877099 |
Electronically controlled variable assist power steering system
A power steering gear for a vehicle capable of providing a variable degree of power assistance to supplement manual steering effort wherein the variable assist is achieved by controlling directly...
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4875542 |
Hydraulic system for variable assist power steering system
A variable assist power steering system employing a fluid distributor circuit of the open center type is disclosed. The fluid distributor circuit includes two parallel fluid flow paths connected to...
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4871040 |
Electromagnetic control apparatus for varying the driver steering effort of a hydraulic power steering system
A hydraulic power steering system having conventional relatively rotatable spool and valve body elements for flow regulation, and an integral electromagnetic mechanism which effectively varies the...
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4872116 |
Vehicle motion estimating system of hybrid type
A vehicle motion estimating system for estimating a vehicle motion variable such as yaw rate, lateral acceleration, or side slip angle by using a mathematical vehicle model is composed of a digital...
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4856607 |
Apparatus for automatically setting steering center for use in power steering apparatus
An automatic steering center setting apparatus provided in a power steering system for a vehicle comprises a static steering motion detecting circuit for detecting a static steering motion state in...
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