Patent ID: 8852949
Filing Date: 2014-10-07
Classification: C22C,F01N,G01N,Y02A,Y02T,Y10T

Abstract:
1. A urea solution quality determining system, comprising: a urea tank in which a urea solution is filled through a charging hole; a test chamber that is positioned below the charging hole for holding a portion of the urea solution, wherein the urea tank and the test chamber are not in fluidic communication; a main line connected to the urea tank at a lower part of the urea tank below the test chamber; a test line connected to the test chamber; a pumping line into which the main line and the test line are joined; a pump installed in the pumping line to pump the urea solution from the test chamber or from the urea tank; a control valve for selectively connecting the main line or the test line to the pumping line; and an injector disposed at an end of the pumping line to inject the urea solution into an exhaust line through which an exhaust gas flows; wherein the urea solution of the urea tank or the test chamber is selectively supplied to the injector by operation of the control valve.