05406483 is referenced by 35 patents and cites 28 patents.

An electronic transmission control system for a self-propelled off-road vehicle having an internal combustion engine and multiple gear powershift transmission. The control system controls the powershift transmission and provides at least one control signal to the engine for selecting the speed at which the engine is to operate. The system includes a first electronic controller that provides transmission control signals required to command the powershift transmission to shift to and operate in any particular one of its forward gears, and second electronic controller that provides at least one engine control signal required to command the engine to operate at one of a number of different desired engine speeds and to monitor the actual engine speed. By use of gear ranges which overlap slightly, and a throttle that is infinitely adjustable within a range of engine speeds, any given ground speed within the range of possible vehicle speeds can be achieved and maintained, as long as engine is operating within its overall power envelope. Once the desired ground speed is specified by the operator, the control system automatically selects the specific transmission gear and engine speed required to achieve the desired ground speed. The control system also performs automatic upshifts or downshifts, as required, to achieve the desired ground speed. The system has a comfort mode, fuel economy mode, and a maximum horsepower mode, all selectable by the operator. The system also supports a pseudo-gear mode where the operator interface indicates there are more gears in the transmission than actually exist.

Title
Engine variable transmission control system
Application Number
700629
Publication Number
5406483
Application Date
March 22, 1994
Publication Date
April 11, 1995
Inventor
Barry D Batcheller
West Fargo
ND, US
Kevin L Brekkestran
Fargo
ND, US
Charles D Needham
Fargo
ND, US
Adrian G Kallis
Fargo
ND, US
Agent
Harness Dickey & Pierce
Assignee
Phoenix International Corporation
ND, US
IPC
B60K 41/18
G06F 15/20
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