| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust emission control device of a construction machine capable of notifying an operator of an operation condition limitation, before performing it, when a residual quantity of a liquid reducing agent is reduced and it is required to perform the operation condition limitation of an engine in response to it.SOLUTION: An exhaust emission control device of a construction machine purifies exhaust gas exhausted from an engine 1 by injecting urea water stored in a urea water tank 23 into an exhaust passage 9, and includes a urea water residual quantity sensor 24 for detecting a residual quantity of the urea water stored in the urea water tank 23, a means for performing warning display M1 on a monitor 7 when a urea water residual quantity A becomes a predetermined residual quantity, a means for performing operation condition limitation of the engine 1 based on a detecting result of the urea water residual quantity sensor 24, and a means for notifying an operator of the construction machine of the performing timing of the operation condition limitation. |
