Patent ID: 9080490
Filing Date: 2015-07-14
Classification: F01N,G01N,Y02T

Abstract:
1. An SCR sensor, comprising: a quality sensor for measuring a liquid quality between a minimum remaining amount liquid level and a bottom portion of a liquid tank; a drop pipe having a drop opening at an upper portion of the liquid tank above the liquid level, wherein the sensor and the drop pipe are connected to a support and together form an assembly extending downward from the upper portion of the liquid tank into the liquid tank, wherein the support guides a float for detecting the liquid level of the tank, wherein a dispensing pipe for dispensing liquid from the liquid tank is installed along the support, wherein the quality sensor is disposed at one side of the dispensing pipe, and wherein the drop opening is disposed on an opposite side of the quality sensor with the dispensing pipe interposed therebetween; and a bubble diffusion region caused by liquid dropping from the drop pipe and being spaced from a sensitive region of the quality sensor.