公开(公告)号：WO2017030800A1

公开(公告)日：2017-02-23

申请号：PCT/US2016/045532

申请日：2016-08-04

Applicant: CUMMINS EMISSION SOLUTIONS INC.

Inventor： KHALED, Nassim ,  LARSON, Bryce R. ,  SONAWANE, Sarang S. ,  SHARMA, Tushar H.

IPC: F01N3/00 ,  G01M15/00

CPC classification number: F01N11/00 ,  F01N3/208 ,  F01N3/2896 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/10 ,  F01N2610/105 ,  F01N2610/1406 ,  F01N2610/148 ,  F01N2900/0408 ,  F01N2900/1811 ,  F01N2900/1812 ,  F01N2900/1814 ,  G01F23/0061 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

Abstract: An aftertreatment system comprises a reductant storage tank and a SCR system fluidly coupled thereto. A reductant physical level sensor and a tank temperature sensor are operatively coupled to the reductant storage tank. A controller is communicatively coupled with each of the sensors and configured to: interpret a first level output value from the physical level sensor and a first temperature output value from the tank temperature sensor. If the first level output value is below a first threshold, the controller determines if the first temperature output value is below a second threshold. If the first level output value is below the first threshold and the first temperature output value is below the second threshold, the controller determines a virtual reductant level in the reductant storage tank and indicates the virtual reductant level in lieu of a physical reductant level in the reductant storage tank to a user.

Abstract translation: 后处理系统包括还原剂储罐和与其流体耦合的SCR系统。 还原剂物理水平传感器和罐温度传感器可操作地耦合到还原剂储存罐。 控制器与每个传感器通信地耦合，并且被配置为：从物理水平传感器解释第一级输出值和来自罐温度传感器的第一温度输出值。 如果第一级输出值低于第一阈值，则控制器确定第一温度输出值是否低于第二阈值。 如果第一级输出值低于第一阈值并且第一温度输出值低于第二阈值，则控制器确定还原剂储存罐中的虚拟还原剂水平，并指示虚拟还原剂水平代替物理还原剂水平 还原剂储存罐给用户。