Excavation machine with constant power output control for...

Details Excavation machine with constant power output control for... Excavation machine with constant power output control for...

2006-10-17

2009-06-30

Estremsky, Sherry (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

Reexamination Certificate

active

07553258

ABSTRACT:
A controller for crawlers of a trencher receives an indication of the speed of an engine and the speed of an output of a torque converter coupling the engine to an excavating element for digging a trench. Based on the ratio of the speed of the engine and the speed of the output of the torque converter, the controller overrides operator input on the crawlers and stops or slows the trencher when the ratio exceeds a predetermined ranged.

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