Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for monitoring particulate matter in exhaust gas feedstream

A technology of particulate matter and feed flow, applied in the direction of mechanical equipment, diagnostic devices of exhaust treatment devices, exhaust devices, etc.

Inactive Publication Date: 2017-11-14
GM GLOBAL TECH OPERATIONS LLC
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Particulate matter sensor monitors exhaust feed flow

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for monitoring particulate matter in exhaust gas feedstream
  • Method and apparatus for monitoring particulate matter in exhaust gas feedstream
  • Method and apparatus for monitoring particulate matter in exhaust gas feedstream

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Referring now to the drawings, in which the description is for the purpose of illustrating certain exemplary embodiments only and not for the purpose of limiting the same, figure 1 An internal combustion engine (engine) 100 is schematically illustrated, fluidly coupled to an exhaust aftertreatment system 50 arranged in accordance with an embodiment of the present invention. Engine 100 is a multi-cylinder internal combustion engine that combusts a mixture of direct injected fuel, incoming air, and recirculated exhaust gas to produce mechanical power. Engine 100 is configured as a compression ignition engine as shown, although the concepts described herein may be used on other engine configurations employing embodiments of exhaust aftertreatment system 50 described herein. Engine 100 may be used on a ground vehicle such as a passenger car, truck, agricultural or construction vehicle, in a marine vehicle, or in a stationary setting such as coupled to a generator. As used ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An exhaust aftertreatment system is provided. The system includes a particulate filter element and a particulate matter sensor that is disposed to monitor the exhaust gas feedstream downstream of the particulate filter element. A method for monitoring the exhaust gas feedstream includes determining a temperature associated with the particulate matter sensor and monitoring engine operation and the exhaust aftertreatment system. A magnitude of ammonia is determined in the exhaust gas feedstream proximal to the particulate matter sensor based upon the monitoring of the engine operation and the exhaust aftertreatment system. An initial reading is determined from the particulate matter sensor and is adjusted based upon the magnitude of ammonia in the exhaust gas feedstream proximal to the particulate matter sensor and the temperature of the particulate matter sensor. A magnitude of particulate matter in the exhaust gas feedstream is determined based upon the adjusted initial reading from the particulate matter sensor.

Description

technical field [0001] The present invention relates to internal combustion engines fluidly coupled to exhaust aftertreatment systems and methods of their control. Background technique [0002] The internal combustion engine is fluidly coupled to an exhaust aftertreatment system that cleans exhaust gases generated as byproducts of combustion. Exhaust aftertreatment systems may include oxidation catalysts, reduction catalysts, selective catalytic reduction catalysts, and particulate filters. Combustion byproducts may include unburned hydrocarbons, carbon monoxide, nitrogen oxides, which may be referred to as NOx molecules, and particulate matter. Operation may be monitored by one or more sensing devices disposed in the exhaust gas feed stream, including, for example, NOx sensors. Operation may also be determined using a simulation model that is performed dynamically during operation. [0003] A selective catalytic reduction catalyst (SCR) may employ a reducing agent to red...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F01N11/00
CPCF01N11/00F01N2900/1602F01N2610/02F01N2560/05F01N2250/02F01N3/2066F01N3/208F01N9/002F01N3/021F01N3/035F01N2550/04F01N2560/08F01N3/027F01N2560/021Y02T10/12Y02T10/40F01N9/005F01N11/002
Inventor C·E·马利特C·塔伊比L·G·佩尔欧莱罗
Owner GM GLOBAL TECH OPERATIONS LLC