Particulate filter trap load regeneration system

Patent · Tue Nov 12 00:00:00 EST 1991

OSTI ID:5935602

Hough, W J; Miller, P R

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.

• Assignee: Cummins Engine Co., Inc., Columbus, IN (United States)
• Patent Number(s): US 5063736; A
• Application Number: PPN: US 7-388675
• OSTI ID: 5935602
• Resource Relation: Patent File Date: 2 Aug 1989
• Country of Publication: United States
• Language: English

Related Subjects

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-)