| 摘要 |
Filter (28) for an aqueous solution, such as urea, of a diesel vehicle selective catalytic reduction system, comprising a housing provided with an inlet and with an outlet and, inside which, is arranged a filter element, and with a means of detecting variations in volume associated with the changes in phase of the aqueous solution, characterized in that the filter additionally is provided with signaling means (17) for signaling said changes in volume of the phase of the aqueous solution. |
