| 摘要 |
PROBLEM TO BE SOLVED: To suppress that a residual amount of urea water in a tank which is obtained by performing residual amount detection processing becomes inaccurate.SOLUTION: When a vehicle height which is adjusted by a vehicle height adjusting device 4 is high, an electronic control device 11 changes an execution condition of residual amount detection processing for obtaining urea water in a tank 9 on the basis of a liquid level of the tank 9 to a condition which is hardly established more than the case that the vehicle height is low. By the change of the execution condition, when the vehicle height is high, and the oscillation of a liquid face in the tank 9 is hardly calmed, the establishment of the execution condition of the residual amount detection processing can be suppressed before the oscillation becomes sufficiently small. Accordingly, even in the case that the vehicle height is high, and the oscillation of the liquid face in the tank 9 is hardly calmed, the execution condition of the residual amount detection processing can be established after the oscillation becomes sufficiently small. As a result, when a residual amount of the urea water in the tank 9 is obtained by the residual amount detection processing which is performed on the basis of the establishment of the execution condition, it can be suppressed that the obtained residual amount becomes inaccurate.SELECTED DRAWING: Figure 1 |
