| 摘要 |
<p>A system for a fluid tank (410) for storing a urea solution in a motor vehicle (400), said system comprising a first float (101) having a first density and a second float (102) having a second density, said first and second floats being movably arranged on guiding means (110) in said fluid tank (410), wherein said first density is less than a density of said urea solution at a reference temperature but greater than a density of water at said reference temperature, and said second density is less than said density of water at said reference temperature, and wherein said system further comprises a control system (420) adapted to receive signals indicative of a level of said floats (101, 102), said control system (420) being further adapted to generate an anomaly signal in response to detecting sinking of said first float (101) and floatation of said second float (102).</p> |
