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Document Title |
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7305778 |
A self-propelled working machine has a pair of transporting parts, a working part, an engine for driving at least the working part, and a main switch for turning the engine on and off. A locomotion preparation switch produces a command f...
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7225068 |
A method is provided for controlling steering oscillations in a work vehicle having a closed loop GPS based automatic steering system, wherein the closed loop steering system has a default gain and a user defined gain. The method causes ...
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7066863 |
In a drive train for a working machine, in particular, a wheel loader, the driving speed is preselected via a driving pedal ( 11 ) and the working hydraulic system is actuated via a selector lever ( 8 ), whose signals are fed to an elect...
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7020553 |
A machine body controller 70 A includes a modification control unit 70 Ab for computing a torque modification value based on detected signals from environment sensors 75 to 83, and modifies a maximum absorption torque of a hydrauli...
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6941688 |
During idling control with an acceleration switch ON, operation of the accelerator pedal is stopped. When stoppage of the operation of the accelerator pedal is detected for a predetermined time period, along with closing a slowdown switc...
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6854523 |
In a motor grader, controls for running the vehicle at a constant speed are provided when a work for improving a land surface with a blade is started by running a working vehicle at a low speed from the low idling start. With this operat...
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6553302 |
A work vehicle such as an agricultural tractor includes means for the operator to select between manual or automatic engine speed control and to select among multiple automatic modes each having a different amount by which the engine spe...
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6549837 |
In many applications, it is desirable to have work machines automatically maintain a desired speed and heading. Provided is an electronic control connected with left and right hydraulic motor assemblies that drive left and right ground e...
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6434462 |
A control system controls a work vehicle towing a towed implement. The control system includes a steering angle sensor, an implement position generating unit generating an actual implement position signal, a desired implement position ge...
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6253136 |
The present invention provides a method and apparatus for controlling a work implement in order to enable an earth moving machine to move to a service area after a failure within an implement control system occurs. The method includes th...
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6234254 |
An apparatus for controlling the torque associated with a power train of a machine having a work implement is disclosed. A plurality of position sensors sense the position associated with the work implement and responsively produce respe...
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6208925 |
A simplified method and system for determining a loading condition on a powertrain of a machine resulting from a loading condition on an implement thereof. The method includes the steps of inputting a predetermined plurality of parameter...
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6205385 |
A control system is disclosed for controlling a power takeoff (PTO) shaft of a work vehicle (e.g., a tractor). The work vehicle includes an engine and an operator station, and the PTO shaft transfers power from the engine to an implement...
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6134494 |
A method of automatically controlling a power takeoff shaft of a work vehicle having a hitch includes automatically initiating engagement of the power takeoff shaft as the hitch is lowered such that the power takeoff shaft reaches clutch...
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6119376 |
An excavator data acquisition and control system and process for characterizing the subsurface geology of an excavation site, and for utilizing the acquired data to optimize the production performance of an excavator is disclosed. A geol...
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6085138 |
A differential lock control system for controlling the locking of the various differential assemblies associated with a particular work machine wherein such system includes a first switch positionable to select any one or more of the dif...
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5819190 |
A ground leveling control system for a bulldozer, comprising: (a) a cutting edge position detector for detecting a position of a cutting edge of a blade with respect to the ground; and (b) a blade controller for controlling the blade to ...
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5816335 |
A dozing system for use in a bulldozer, having the capability of estimating a loading ratio (the ratio of soil loaded on the blade to the loading capacity of the blade) with high accuracy so that a mode shift from digging to carrying can...
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5802489 |
A control system for engaging, disengaging and re-engaging a front wheel drive in an agricultural vehicle includes a control circuit configured to receive signals representative of vehicle operating parameters and to generate control sig...
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5725068 |
A speed limiting device for a vehicle equipped with a deployable utility device such as a bunker rake. An adjustable mechanical linkage connects a limiting mechanism to the deployable utility device such that when the utility device is d...
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5699248 |
A running slip control system for a bulldozer, comprising: (a) a running slip detector for detecting the running slip of a vehicle body; and (b) a blade controller for lifting a blade to eliminate the running slip when the running slip d...
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5694317 |
A blade control system for a bulldozer, comprising: (a) a pitch angle detector for detecting a pitch angle of a vehicle body when the vehicle body inclines back and forth; (b) an actual tractive force detector for detecting an actual tra...
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5659985 |
An information acquisition and control system and process acquires geological information from a subsurface and modifies the operation of an excavating machine using the acquired geological information. The system includes a data acquisi...
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5621643 |
A dozing system for a bulldozer with which dozing can be carried out by a simple operation without giving a great deal of fatigue to the operator. When the running slip of a vehicle body is not detected by a running slip detector, a blad...
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5564507 |
A load control unit for a bulldozer, comprising an actual tractive force detector for detecting the actual tractive force of a vehicle body; target tractive force setting switch for setting a target tractive force for an automatic blade ...
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5555942 |
A blade control system for use in a bulldozer comprising: a driving mode setting device which can set an automatic blade control mode during dozing operation; a running condition detector for detecting whether a transmission is placed in...
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5549166 |
A hitch assembly control system including an actuator which positions the hitch assembly in response to control signals provided to an electrically driven actuator. The control system further includes an electronic controller operated un...
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5515927 |
A control unit for controlling load on a bulldozer in the case of manual intervention, comprising: an actual tractive force detector for detecting the actual tractive force of a vehicle body; a target tractive force setting device for se...
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5509220 |
A system and process for controlling propulsion of a track trencher excavation machine includes a multiple mode propulsion control that performs a plurality of functions depending on a selection of one of a plurality of operational modes...
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5505267 |
A control system for engaging, disengaging and re-engaging a differential locking mechanism in an agricultural vehicle includes a control circuit configured to receive signals representative of vehicle operating parameters and to generat...
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5469921 |
A hitch assembly control system including an actuator which positions the hitch assembly in response to control signals provided to an electrically driven actuator. The control system further includes an electronic controller operated un...
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5454432 |
An implement control system includes desired draft force setting apparatus and draft force sensing apparatus providing a draft force signal. It also includes engine speed sensing apparatus arranged to provide an engine speed signal of th...
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5450068 |
An infrared remote-controlled soil compacting device is controlled such that the device cannot be set into operation as long as the operator with the sending unit is within close vicinity of the soil compacting device so that an accident...
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5421416 |
A hitch assembly control system including an actuator which positions the hitch assembly in response to control signals provided to an electrically driven actuator. The control system further includes an electronic controller operated un...
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5333479 |
The present invention relates to a method for controlling a power output of an engine of a crawler vehicle; such as, large sized bulldozers, at a time when shoe slip of such crawler vehicle occurs in operation, the crawler vehicle being ...
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5297649 |
At the time of starting movement as well as at the time when a crawler type tractor, e.g., a bulldozer for performing a dosing operation and a ripping operation is held in a three-point grounding state, an output from an engine (10) is a...
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5074373 |
A drive connection on a support vehicle for interchangeable hydraulic attachments to be coupled to the support vehicle includes an electronic control apparatus and a plurality of circuit elements connected thereto and actuated when the a...
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5012415 |
A microprocessor-based control system includes an automatic calibration and configuration feature. A calibration and configuration algorithm operates to establish the sensor ranges of all sensors installed and disables certain configurab...
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4979092 |
A hitch control system includes a draft force sensor, a hitch position sensor, an operator command lever, an upper hitch position limit setter, a mixer setter, a drop rate setter and a control unit which generates control signals as a fu...
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4931967 |
A microprocessor-based control system includes an automatic calibration and configuration feature. A calibration and configuration algorithm operates to establish the sensor ranges of all sensors installed and disables certain configurab...
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4878543 |
A method of controlling an attachment to an agricultural tractor in which the absolute movement of the attachment is determined by a motion sensor mounted thereon and is utilized as a control standard while the relative motion of the att...
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4837691 |
A hitch control system includes an algorithm which prevents undesired and/or unexpected hitch movement upon start-up of the control system, depending upon the actual hitch position, the commanded hitch position and an operator set limit ...
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4740778 |
In the field of automated guided vehicles it is particularly important that speed and steering angle feedbacks be accurate and reliable. Any deviations in these feedback signals should be promptly detected and used to alter operation of ...
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4657087 |
In a particular species of the preferred embodiment, the invention contemplates a land traveller such as a farm tractor pulling a passive load such as a plough, disc or the like. A control device for directing or controlling the path of ...
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4612996 |
A robotic tractor that travels on rails forming a grid over a crop field and automatically performs tasks in the field is described. The tractor is supported on extendable legs that carry dual tandem perpendicular wheel sets. A rotary im...
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4582141 |
A motor vehicle, preferably with a fuel injection engine, has a coupling, such as a multi-point hitch, connectable to an attachment. One or more of the hitch's arms are pivotable about a connection to the vehicle, and when the attachment...
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4558760 |
The apparatus is of the kind comprising detectors (21,23) of deviation of vehicle positional parameters from a path which is fixed in advance providing electrical data which actuates a control device (14) connected to a steering device (...
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4549610 |
An agricultural tractor having six wheels which are each hydraulically drivable by individual hydraulic motors through hydraulic fluid supplied by respective hydraulic pumps. With each pump driving only one wheel, skidding of a wheel doe...
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4518045 |
An engine driven agricultural tractor has a hitch control system with an actuator which is responsive to a differential coolant pressure across the engine driven coolant pump.
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4518044 |
A tractor includes a hitch for pulling a ground-engaging implement. A hydraulic cylinder is extendable and retractable to lower and raise the implement. A control system senses operating parameters, including wheel slip, engine speed, dr...
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