公开(公告)号：US09453450B2

公开(公告)日：2016-09-27

申请号：US14299285

申请日：2014-06-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Min Sun ,  Igor Anilovich ,  Nagini Devarakonda ,  Pablo Hernandez Garcia

IPC: F02D41/14 ,  F01N11/00 ,  F01N9/00 ,  F02D21/08 ,  F02D41/00 ,  F02D41/22

CPC classification number: F01N11/00 ,  F01N9/00 ,  F01N9/005 ,  F01N9/007 ,  F01N11/007 ,  F01N2560/026 ,  F01N2560/07 ,  F01N2900/0412 ,  F01N2900/0416 ,  F01N2900/08 ,  F01N2900/1402 ,  F02D21/08 ,  F02D41/0072 ,  F02D41/1445 ,  F02D41/1461 ,  F02D41/1462 ,  F02D41/222 ,  Y02T10/47

Abstract: A method of estimating a mass flow rate of nitrogen oxides in exhaust gas includes sensing a mass flow rate of a flow of exhaust gas from the engine. A nitrogen oxides base concentration for when the engine is operating at a reference state is defined, and a nitrogen oxides ratio for a current operating state of the internal combustion engine is calculated. The mass flow rate of the flow of exhaust gas, the nitrogen oxides base concentration, and the nitrogen oxides ratio for the current operating state of the engine are multiplied together to define an estimated value of the current mass flow rate of nitrogen oxides in the flow of exhaust gas from the engine. The estimated value of the mass flow rate of nitrogen oxides may be compared to the output from a nitrogen oxides sensor to determine proper functionality of the nitrogen oxides sensor.

Abstract translation: 估计废气中氮氧化物的质量流量的方法包括检测来自发动机的废气流的质量流量。 定义发动机在参考状态下工作时的氮氧化物碱浓度，并计算内燃机的当前运行状态的氮氧化物比。 将发动机的当前运转状态的废气流量，氮氧化物碱浓度和氮氧化物比的质量流量相乘，以确定流动中的氮氧化物的当前质量流量的估计值 来自发动机的废气。 可以将氮氧化物的质量流量的估计值与来自氮氧化物传感器的输出进行比较，以确定氮氧化物传感器的正确功能。

公开(公告)号：US20150354428A1

公开(公告)日：2015-12-10

申请号：US14299285

申请日：2014-06-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Min Sun ,  Igor Anilovich ,  Nagini Devarakonda ,  Pablo Hernandez Garcia

IPC: F01N11/00 ,  F01N9/00

CPC classification number: F01N11/00 ,  F01N9/00 ,  F01N9/005 ,  F01N9/007 ,  F01N11/007 ,  F01N2560/026 ,  F01N2560/07 ,  F01N2900/0412 ,  F01N2900/0416 ,  F01N2900/08 ,  F01N2900/1402 ,  F02D21/08 ,  F02D41/0072 ,  F02D41/1445 ,  F02D41/1461 ,  F02D41/1462 ,  F02D41/222 ,  Y02T10/47

Abstract: A method of estimating a mass flow rate of nitrogen oxides in exhaust gas includes sensing a mass flow rate of a flow of exhaust gas from the engine. A nitrogen oxides base concentration for when the engine is operating at a reference state is defined, and a nitrogen oxides ratio for a current operating state of the internal combustion engine is calculated. The mass flow rate of the flow of exhaust gas, the nitrogen oxides base concentration, and the nitrogen oxides ratio for the current operating state of the engine are multiplied together to define an estimated value of the current mass flow rate of nitrogen oxides in the flow of exhaust gas from the engine. The estimated value of the mass flow rate of nitrogen oxides may be compared to the output from a nitrogen oxides sensor to determine proper functionality of the nitrogen oxides sensor.

Abstract translation: 估计废气中氮氧化物的质量流量的方法包括检测来自发动机的废气流的质量流量。 定义发动机在参考状态下工作时的氮氧化物碱浓度，并计算内燃机的当前运行状态的氮氧化物比。 将发动机的当前运转状态的废气流量，氮氧化物碱浓度和氮氧化物比的质量流量相乘，以确定流动中的氮氧化物的当前质量流量的估计值 来自发动机的废气。 可以将氮氧化物的质量流量的估计值与来自氮氧化物传感器的输出进行比较，以确定氮氧化物传感器的正确功能。