Deere + Company

Peter Leslie Falck

Dennis Lee Jeffries

David E Brandon

Nicolai Tarasinski

Bruce Craig Newendorp

Carl E Kittle

Trent Lynn Goodnight

Timothy Joel Kilworth

Aaron Matthew Senneff

Stephen P Lang

Uwe H Kugler

Michael Jonathan Martin

Brandon G Leiran

Charles W Formwalt, Jr

Timothy J Roszhart

Helmut Sch&auml;fer

Bruno Hoess

Michael O Youngblood

Aaron M Sennef

Trend L Goodnight

A system and method for controlling a vehicle with a sequence of vehicle events. A user interface allows the recording of vehicle functions that are being manually executed. After the vehicle functions are entered, they can be saved as a sequence and named appropriately. Once saved, the operator can choose to edit the sequence functions or distances to make adjustments or shift the entire sequence in time. The saved sequence can be executed at a certain distance relative to a boundary being crossed by the machine. The boundaries themselves may be pre-defined in the system, and the system can determine when the boundary is crossed based on real-time GPS position and speed measurements from the vehicle. Error distances can also be measured on the ground to determine what type of sequence shift is needed for fine-tuning. As the vehicle speed is adjusted, the sequence can be continually tuned to allow the sequence to execute accurately in a variety of operations.

System and method for controlling a vehicle with a sequence of vehicle events

A control device for the parking lock of a motor vehicle has at least one actuating drive ( ) that can be operated by triggering devices and with which a locking device ( ) can be moved between engaged and disengaged positions. For reliable operation, at least two independent triggering devices are provided and a change in position takes place only if both triggering devices ( ) are actuated. Preferably a hydraulic piston ( ) brings the parking lock into its disengaged position when subjected to pressure. The triggering devices are constructed as solenoids ( ) under the control of two electrical controllers ( ) that undertake an evaluation of relevant control and measurement parameters.

Control device for the parking lock of a motor vehicle

A tractor includes various actuators or functions, such as a powershift transmission, a hitch and hitch control system, a PTO, a plurality of selective control valves, etc., all controlled by one or more control units in response to sensed parameters and operator manipulated control devices, such as switches, knobs and levers. A function management system includes a programmed control unit which has a learn/save mode which is operable while the vehicle is moving. During the learn/save mode the operator performs a sequence of manual manipulations of the operator control devices, and the control unit records and then stores information pertaining to the sequence of operations, together with information pertaining to the distances traveled by the tractor between operations. The control unit also has an execute or replay mode, operable in response to an operator command signal, wherein the control unit automatically performs the stored sequence of operations so that the sequence of operations is performed at the same distance intervals at which they were learned, regardless of the speed of the vehicle.

Vehicle function management system

A system and method for controlling the clutches in a vehicle powershift transmission. The control system includes a microprocessor which periodically executes an algorithm and which has a memory in which is stored a sequential set of time reference values and a sequential set of pressure values. The control system applies to each oncoming element a fill pressure pulse for fill periods which are unique for each element. The control system determines shift time values, subsequent to filling of the control elements, as a function of the fill period. The control system applies pressure signals to the control elements at times represented by the shift time values which are unique for each element. The control system determines, subsequent to a realignment time, realignment shift time values which are the same for all of the control elements. The control system also applies pressure signals to the control elements subsequent to the realignment time, at times determined as a function of the realignment shift time values.

Method for controlling transmission control clutches

A control system for a vehicle powershift transmission includes a set of electrical connectors which in a normal mode, permit electrical power to be transmitted to microprocessor-controlled valve drivers for the transmission clutch control valves. These connectors may be swapped, in a limp-home mode, to permit power to be transmitted directly to the transmission clutch control valves. In both modes, a start-in-gear protection circuit including a pair of relays and switches coupled to the shift lever prevents the vehicle from being started up with a gear engaged. In the limp-home mode, a limp-home relay and a clutch disengaged switch prevents gear engagement until the operator has depressed and then released the clutch pedal, and the clutch pedal may be operated to modulate and control gear engagement.

Transmission control with limp-home function

The hydraulically operated brake and clutch elements (controlled by proportional control valves) of a vehicle powershift transmission have fill pressures which are calibrated by a method wherein the output shaft of the transmission is disconnected from the vehicle drive shaft so that the transmission output shaft is free to rotate and certain ones of the plurality of the control elements other than the control element being calibrated are fully pressurized in order to prevent rotation of a part of the control element being calibrated. The engine is run at a predetermined speed and the pressure applied to the control element being calibrated is gradually increased while engine speed is monitored. When the monitored engine speed changes by predetermined amount, a value is saved corresponding to the calibration pressure. The transmission is automatically shifted to neutral if vehicle motion is sensed. The volume of hydraulic fluid required to initially engage the control element may be calibrated in a similar manner.

Calibration method for transmission control clutches

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Waterloo, IA, United States of America

Peter Leslie Falck