公开(公告)号：US20150240695A1

公开(公告)日：2015-08-27

申请号：US14188106

申请日：2014-02-24

Applicant: GM Global Technology Operations LLC

Inventor： Vincent J. Tylutki ,  Christopher Whitt ,  Cristian Taibi ,  Michelangelo Ardanese

IPC: F01N11/00

CPC classification number: F01N11/002 ,  F01N3/021 ,  F01N3/103 ,  F01N3/2066 ,  F01N2550/04 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/1404 ,  F01N2900/1411 ,  F01N2900/1606 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

Abstract: A method for determining an over-temperature condition in an exhaust gas treatment system is provided. The method compares a current soot load in a particulate filter with a threshold soot load. The method compares each of a plurality of temperatures sensed by a plurality of temperature sensors with a threshold temperature. Based on determining that the current soot load in a particulate filter of the exhaust gas treatment system exceeds a threshold soot load and that one of the plurality of temperatures exceeds the threshold temperature, the method determines that the exhaust gas treatment system is in an over-temperature condition. Based on determining that the current soot load in the particular filter does not exceed the threshold soot load and that two or more of the plurality of temperatures exceed the threshold temperature, the method determines that the exhaust gas treatment system is in an over-temperature condition.

Abstract translation: 提供了一种用于确定废气处理系统中的过热状态的方法。 该方法将微粒过滤器中的当前烟灰负荷与阈值烟灰负荷进行比较。 该方法将由多个温度传感器感测的多个温度中的每一个与阈值温度进行比较。 基于确定废气处理系统的微粒过滤器中的当前烟灰负荷超过阈值烟灰负荷并且多个温度中的一个超过阈值温度，该方法确定废气处理系统处于过热状态， 温度条件。 基于确定特定过滤器中的当前烟灰负荷不超过阈值烟灰负荷并且多个温度中的两个或更多个温度超过阈值温度，该方法确定废气处理系统处于过温状态 。

公开(公告)号：US20150211962A1

公开(公告)日：2015-07-30

申请号：US14168485

申请日：2014-01-30

Applicant: GM Global Technology Operations LLC

Inventor： Min Sun ,  Michelangelo Ardanese ,  Michele Bilancia ,  Giorgio Sticchi

IPC: G01M15/10 ,  G01N33/00

CPC classification number: G01M15/102 ,  G01N33/0036 ,  Y02A50/25

Abstract: A method of estimating a current soot output from an engine includes sensing a mass flow rate of a flow of exhaust gas from the engine, and defining a soot output base rate of the engine when the engine is operating at a reference state. A soot ratio for a current operating state of the engine is calculated. The mass flow rate, the soot output base rate, and the soot ratio are multiplied together to define an estimated value of the current soot output from the engine. The soot ratio is based on current engine operating parameters, including an air/fuel ratio of the engine, an exhaust gas recirculation ratio of the engine, a fuel injection pressure of the engine, and a fuel injection timing of the engine.

Abstract translation: 估计来自发动机的当前烟灰输出的方法包括感测来自发动机的废气流的质量流量，并且当发动机在参考状态下操作时，确定发动机的烟灰输出基本速率。 计算发动机的当前运行状态的烟灰比。 将质量流量，烟灰输出基准率和烟灰比相乘在一起以定义从发动机输出的当前烟灰的估计值。 烟炱比基于目前的发动机操作参数，包括发动机的空气/燃料比，发动机的废气再循环比，发动机的燃料喷射压力和发动机的燃料喷射正时。