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Title: Particulate filter trap load regeneration system

Abstract

This patent describes an apparatus for determining when to regenerate a particulate filter trap used to collect particulates from an exhaust gas stream of an internal combustion engine. It comprises regenerative means operable in response to a control signal to regenerate the trap by causing the trapped particles to burn away; trap differential pressure sensing means for generating a trap differential pressure signal indicative of the fluid pressure drop in the exhaust gas stream as it passes through the particulate filter trap; flow rate sensing means located downstream of the particulate filter trap for generating a signal related to the volume flow rate of the exhaust gas stream downstream of the particulate filter trap; and control signal generating means connected with the trap differential pressure sensing means and with the flow rate sensing means for determining the mass loading of particulates within the particulate filter trap and for generating the control signal when the mass loading reaches a predetermined limit in a manner which is insensitive to exhaust gas leads upstream of the particulate filter.

Inventors:
;
Publication Date:
OSTI Identifier:
5935602
Patent Number(s):
US 5063736; A
Application Number:
PPN: US 7-388675
Assignee:
Cummins Engine Co., Inc., Columbus, IN (United States)
Resource Type:
Patent
Resource Relation:
Patent File Date: 2 Aug 1989
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 54 ENVIRONMENTAL SCIENCES; EXHAUST SYSTEMS; AIR FILTERS; INTERNAL COMBUSTION ENGINES; AIR POLLUTION CONTROL; PARTICULATES; POLLUTION CONTROL EQUIPMENT; CONTROL; ENGINES; EQUIPMENT; FILTERS; HEAT ENGINES; PARTICLES; POLLUTION CONTROL; 330705* - Emission Control- Particulates; 540120 - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-)

Citation Formats

Hough, W J, and Miller, P R. Particulate filter trap load regeneration system. United States: N. p., 1991. Web.
Hough, W J, & Miller, P R. Particulate filter trap load regeneration system. United States.
Hough, W J, and Miller, P R. 1991. "Particulate filter trap load regeneration system". United States.
@article{osti_5935602,
title = {Particulate filter trap load regeneration system},
author = {Hough, W J and Miller, P R},
abstractNote = {This patent describes an apparatus for determining when to regenerate a particulate filter trap used to collect particulates from an exhaust gas stream of an internal combustion engine. It comprises regenerative means operable in response to a control signal to regenerate the trap by causing the trapped particles to burn away; trap differential pressure sensing means for generating a trap differential pressure signal indicative of the fluid pressure drop in the exhaust gas stream as it passes through the particulate filter trap; flow rate sensing means located downstream of the particulate filter trap for generating a signal related to the volume flow rate of the exhaust gas stream downstream of the particulate filter trap; and control signal generating means connected with the trap differential pressure sensing means and with the flow rate sensing means for determining the mass loading of particulates within the particulate filter trap and for generating the control signal when the mass loading reaches a predetermined limit in a manner which is insensitive to exhaust gas leads upstream of the particulate filter.},
doi = {},
url = {https://www.osti.gov/biblio/5935602}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {11}
}