CONSTRUCTION MACHINE

摘要

Provided is a construction machine configured so as to prevent wasteful fuel consumption by preventing an engine stall by means of the injection of an appropriate amount of fuel. A backhoe (1) which is a construction machine in which a hydraulic pump (24) is driven by power from an engine (9) is configured so that the output torque characteristics (Tp1) of the engine (9) is set on the basis of the atmospheric pressure (P1) detected by an atmospheric pressure sensor (30) which is an atmospheric pressure detection means, and so that a rotational speed (Vlb) is set so that the maximum torque of the engine (9) at a low idle rotational speed is greater than the maximum absorption torque (Th) of the hydraulic pump (24).