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7619859 |
Electric power steering device
An electric power steering device that can estimate an ambient temperature and apply current limiting without using ambient temperature detecting means is provided. The electric power steering...
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7617906 |
Hydraulic steering system with a variable flow device
An apparatus ( 10 ) for turning steerable wheels ( 12, 14 ) of a vehicle in response to turning of a steering wheel ( 18 ) of the vehicle. The apparatus includes a hydraulic power steering gear,...
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7617905 |
Hydraulic steering device
A hydraulic steering device ( 1 ) of a mobile machine, in particular of an industrial truck, includes a steering angle transmitter ( 2 ) in mechanically functional communication with a steering...
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7610989 |
Control system and a vehicle comprising the control system
System for controlling at least one hydraulic cylinder ( 2, 3 ) having a first control valve unit ( 4 ) connected to the hydraulic cylinder for regulation thereof. A first operable control means (...
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7596441 |
Power steering device
In a power steering device employing a hydraulic power cylinder, a motor-driven pump, and a driving power source for the motor, a power steering control system is configured to electrically...
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7596440 |
Steering apparatus and steering ratio control method for automotive vehicle
A steering apparatus for an automotive vehicle is provided with an electric drive unit that varies a steering ratio between a road wheel angle and a steering wheel angle of the vehicle, a...
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7584816 |
Power steering apparatus
There is provided a power steering system including an electric motor for generating a steering force in response to an command value, and a controller for generating the command value to the...
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7549499 |
Hydraulic hybrid four wheel drive
An hybrid four wheel drive system characterized by a vehicle having a conventional rear wheel driveline as well as a conventional driving front steer axle powered by an hydraulic motor. The hybrid...
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7438154 |
Automotive steering rack stroke adjusting device
An automotive steering rack stroke adjusting device is disclosed that detects a change in a gap defined between steerable wheels and a vehicle body depending on a change in the stroke of the...
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7434655 |
Power steering system
A power steering system includes first and second communication passages for providing communication between a first oil passage and a second oil passage, a third communication passage for...
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7434654 |
Electric preload for variable effort steering system
A power steering system for a vehicle includes a hydraulic system for controlling resistance of a steering wheel. A valve of the hydraulic system is connected to a coil which varies positioning of...
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7434653 |
On-demand electro-hydraulic steering system
A hydraulic steering system for a work machine may include a first steering actuator having a first and a second chamber. In addition, the steering system may include a second steering actuator...
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7428944 |
Drive train for a compressor and a hydraulic pump
A drive train for a compressor and a hydraulic pump of a motor vehicle, and a method of use are described. The system includes a hydraulic power steering system, an electric superimposed steering...
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7407034 |
Method, device and computer program product for controlling the steering of a vehicle
Method and device for controlling a vehicle's operation by sensing a vehicle driver's operation of a control element of the vehicle, and the steering angle of the vehicle being regulated depending...
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7389848 |
Hydraulic power steering assistant
The invention generally relates to an improvement of conventional Hydraulically Power Assisted Steering system (HPAS-system) arranged to supply a steering assist force to the steering assembly of a...
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7387186 |
Power steering apparatus
A power steering apparatus includes a hydraulic power cylinder, a reversible pump including a first outlet connected with a first pressure chamber of the power cylinder through a first fluid...
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7383111 |
Steering apparatus
A steering apparatus for a vehicle includes a steering angle measuring unit, a vehicle speed measuring unit, a yaw rate measuring unit, a yaw rate-based reaction force control unit for controlling...
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7364006 |
Steering system with leads and pulls compensation
A power assist steering system including a valve housing and a proportional control valve supported within the valve housing, further includes a pressure transducer arranged with respect to the...
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7364004 |
Apparatus for use in turning steerable vehicle wheels
An apparatus ( 10 ) for use in turning steerable vehicle wheels ( 14, 16 ) includes a hydraulic power steering motor ( 12 ). A pump ( 26 ) is operable to supply hydraulic fluid to the power...
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7363134 |
Power steering apparatus
A power steering apparatus according to the present invention is constructed to calculate a rate of change of steering speed detected by steering speed detecting means and judge whether the...
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7357215 |
Steering apparatus for electric industrial vehicle
A controller controls right and left wheel drive motors based on a tire angle detected by a tire angle sensor such that the angular velocities of a pair of drive wheels about the center of a turn...
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7350616 |
Power steering pump having electronic bypass control
A power steering pump comprises a housing that includes a bore, a fluid discharge port that supplies pumped fluid into the bore, and a fluid bypass port for recycling excess fluid to the pumping...
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7325645 |
Power steering device
A first fluid passage extends from a first outlet/inlet port of a hydraulic pump to a first work chamber of a power cylinder, and a second fluid passage extends from a second outlet/inlet port of...
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7315773 |
Vehicle motion control method and vehicle motion control apparatus
This invention provides a vehicle motion control method and a vehicle motion control apparatus capable of improving the behavior stability of a vehicle. According to the vehicle motion control...
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7306072 |
Hydraulic power-assisted steering system
The invention relates to a hydraulic power-assisted steering system comprising a steering gear and a hydraulic actuator for assisting actuation of the steering wheel by the driver of a vehicle, in...
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7303044 |
Electro-hydraulic power steering assist system for an automobile
An electro-hydraulic power steering system for a vehicle includes a booster pump rotated by an electric motor, under control of a computer, as a function of a signal representing speed of the...
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7287550 |
Assembly consisting of a valve member and adjustment device for a vehicle servo-steering arrangement
An assembly consists of a valve shaft, a valve member and an adjusting device which can alter the angle alignment of the valve member relative to the valve shaft.
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7278512 |
Variable gear ratio hydraulic power steering device
A variable gear ratio hydraulic power steering device 1 is provided with a variable ratio transmission mechanism 7 having a drive motor 70 ; a flow volume control valve 41 for controlling...
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7272478 |
Control system for active attenuation of torque-steer via electric power steering
The present invention provides a device for dynamically counteracting torque steer which includes a processor adapted to calculate a correction factor from a calculated axle torque on front wheel...
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7249608 |
Flow control for power steering
The flow control device comprises a supply passage ( 2 ) for supplying hydraulic fluid discharged by a pump ( 1 ) to a power steering output section ( 8 ); a variable throttle section ( 3 )...
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7243570 |
Power-assisted steering with electric motor locking device
A power-assisted steering with a superimposing gear mechanism enables safe steering behavior independently of the type of transmission used. A mechanical lock is mounted at a part of the...
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7240760 |
Steering apparatus
A vehicle steering apparatus ( 10 ) includes a steering gear assembly ( 20 ) which is connected with a steerable vehicle wheel ( 12 ). A first sensor ( 26 ) has an output signal which is a function...
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7210554 |
Power steering system
A power steering system includes a hydraulic power cylinder, a hydraulic pump for supplying an oil pressure to the hydraulic power cylinder, an electric motor for driving the hydraulic pump, a...
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7185731 |
Haptic controller for road vehicles
An electric assisted steering system for a motor driven road vehicle, having assist torque signal generating means which generates an assist torque signal for the steering system in response to the...
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7174988 |
Power steering system
A power steering system includes a reversible-type oil pump supplying hydraulic fluid to first and second pressure chambers of a hydraulic power cylinder through first and second passages and...
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7173392 |
Switching controller and method for controlling switching position
A second member and a first member are applied with bias force to mechanically engage with each other at one of detent positions defining relative positions therebetween. An electric motor rotating...
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7168520 |
Power-assisted steering system of an automobile
A servo-assisted steering system for a motor vehicle, in which the steering system includes a steering wheel for presetting a desired steering angle for the wheels of the motor vehicle, a...
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7159394 |
Power steering system
A steering speed-computing section ( 81 ) to differentiate a steering angle of a steering wheel from a steering angle sensor ( 18 ) to compute the steering speed signal, a low-pass filter ( 82 ) to...
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7155905 |
Power steering apparatus
A power steering apparatus includes a hydraulic power cylinder, and a reversible pump driven by a motor. A steering assist sensor senses a steering assist force provided to a steering wheel. A...
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7100638 |
Valve for a hydraulic power steering
In a valve for a hydraulic power steering, comprising a first valve element and a second valve element which from a central position can be rotatably displaced relative to each other to a limited...
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7066295 |
Vehicle steering apparatus and control method therefor
When a variable value indicates that a steering characteristic is understeer, a control unit controls a variable transmission ratio device to change a second steering angle such that the greater...
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7047996 |
Flow controlling apparatus
A flow controlling apparatus to control flow rate of working fluid discharged from pump apparatus to a power steering apparatus including a electric variable throttle, a solenoid mechanism and a...
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7044262 |
Power steering system
A power steering system and a method of charging the power steering system with hydraulic fluid are provided. Hydraulic fluid is selectively supplied to hydraulic chambers of a power cylinder via...
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7042179 |
Electric power steering apparatus
An electric power steering apparatus using a brushless motor is disclosed. The electric power steering apparatus has a microcomputer for calculating a target current to the brushless motor on the...
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7035726 |
Steering characteristic control apparatus and method for a vehicle
A steering characteristic control apparatus and method for a vehicle is disclosed which can carry out behavior control of the vehicle regarding a steering characteristic and so forth appropriately...
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7004281 |
Steering apparatus for use in an automotive vehicle and equipped with a transmission ratio adjusting mechanism
A transmission ratio of a rotational angle of an output shaft to a rotational angle of an input shaft is adjustable by a transmission ratio changing mechanism when a coupling member is in a...
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6968921 |
Roll-over controller
A steering system for a vehicle includes at least one wheel that pivots to define a steering angle, wherein the steering angle is defined, at least in part, by an input from the operator, and at...
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6926114 |
Assist modification in active front steering
Disclosed herein in an exemplary embodiment is a method for providing variable assist in an active steering system of a vehicle. The method comprises: receiving an input signal that includes at...
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6904999 |
Vehicular steering control device and vehicular steering control method
A target relative rotational angle Δθt which is created by a steering gear ratio change unit and which is formed by a lower steering shaft relative to an upper steering shaft is calculated on the...
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6896091 |
Vehicular steering control apparatus and method
A vehicular steering control apparatus controls the wheel steering amount of wheels based on a steering angle and an assist angle obtained by multiplying a steering speed by a gain. If the amount...
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