| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a system for releasing limitation on operation of an engine capable of releasing limitation on operation of the engine when it is required to operate the engine urgently in the case of disaster and the like even if a residual level of urea water in a urea water tank becomes less than a prescribed value and limitation on engine operation is applied.SOLUTION: This invention is constituted in such a way that a releasing key management device B includes a releasing key (b) input part B1, a releasing key (b) storage part B2 and a releasing key (b) output part B3; a service tool C includes a releasing key (b) input part C1, a releasing key (b) storage part C2 and a releasing key (b) output part C3; and a control device 5 includes a releasing key (b) input part 5a. After an operation limitation is applied to an engine 1 by the control device 5, the respective releasing key (b) specific to the engine 1 output from the releasing key management device B is inputted to the control means 5 of the engine 1 through the service tool C and the operation limitation for the engine 1 by the control device 5 is released.</p> |
