| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain both lower fuel consumption and improved operability. <P>SOLUTION: An engine control device includes: detection means that detects the operating state of a work machine; unloaded maximum rotational frequency computation means that, on the basis of the operating state, computes an unloaded maximum rotational frequency np2, which is the engine rotational frequency that can be raised at a maximum when the load of the work machine has been removed; target matching rotational frequency computation means that, on the basis of the operating state, separately from the unloaded maximum rotational frequency, computes a target matching rotational frequency np1, which is the rotational frequency that the engine can be raised to when the load has been applied to the work machine; engine target output computation means that, on the basis of the operating state, computes the engine target output EL that can be output at a maximum; and an engine control means that controls the engine rotational frequency between the unloaded maximum rotational frequency np2 and the target matching rotational frequency np1 and under the limit of the engine target output EL. <P>COPYRIGHT: (C)2013,JPO&INPIT |
