Patent ID: 7661499

Claim:
A construction machine that includes a first mode in which a maximum output of an engine is a prescribed output, a second mode in which the maximum output of the engine is limited to an output less than the prescribed output, and a mode selector switch for enabling an operator to select from the plurality of modes, the construction machine comprising: an accelerator for enabling the operator to adjust an engine speed of the engine, traveling speed detecting means that detects a traveling speed, and a controller that, when the first mode is selected by means of the mode selector switch and the traveling speed detected by the traveling speed detecting means is a prescribed speed or slower and an opening degree of the accelerator is a prescribed opening degree or larger, controls an operation in the second mode regardless of the mode selected by the mode selector switch wherein maximum driving force at the time when the second mode is selected is set to a value that does not exceed an appropriate maximum driving force, and wherein each of the prescribed speed and the prescribed opening degree is set such that the driving force at the time when the first mode is selected does not exceed the maximum driving force at the time when the second mode is selected.