WORKING VEHICLE ENGINE OUTPUT CONTROL SYSTEM AND METHOD

摘要

It is an object of the present invention to solve a problem to be caused when a torqcon of a work vehicle is in a nearly/completely stalled state. A storage unit (22) of a controller (20) stores a preliminarily set speed ratio threshold ec. The speed ratio threshold ec is a speed ratio at which a torque ratio t of a torque converter (4) is greater than a torque ratio t1 corresponding to a maximum efficiency · max. Engine output reduction portion (23) of the controller (20) controls an output Pe of an engine (3) to be reduced when a computed speed ratio e is equal to or less than the speed ratio threshold ec.