Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ADAPTIVE DIESEL PARTICULATE FILTER REGENERATION CONTROL AND METHOD
Document Type and Number:
WIPO Patent Application WO/2012/109504
Kind Code:
A3
Abstract:
An after-treatment device that includes a diesel particulate filter (DPF) requiring periodic regeneration includes a sensor providing a signal indicative of a soot accumulation and at least one device providing an operating parameter indicative of a work mode of the machine. A controller determines a soot loading of the DPF based least partially on the soot signal, and a readiness level based on the operating parameter. A soot level trigger is determined based on a time period since a regeneration was completed and the readiness level, and a debounce time period is determined based on the soot loading and the readiness level. The controller is configured to initiate a regeneration event of the DPF when the debounce time period has expired while the soot loading exceeds the soot level trigger.

More Like This:
JP5163695Exhaust purification device for internal combustion engine
JP2012127229GASOLINE ENGINE
JP4922876Exhaust gas purification system for internal combustion engine
Inventors:
DEA KEVIN (GB)
CHELLINGWORTH TRENT M (GB)
CARLILL TOM W (GB)
CATES OLIVER (GB)
Application Number:
PCT/US2012/024582
Publication Date:
January 17, 2013
Filing Date:
February 10, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CATERPILLAR INC (US)
DEA KEVIN (GB)
CHELLINGWORTH TRENT M (GB)
CARLILL TOM W (GB)
CATES OLIVER (GB)
International Classes:
F01N3/023; F01N9/00
Foreign References:
US20100229538A12010-09-16
US20070256408A12007-11-08
US7028466B22006-04-18
US7677030B22010-03-16
Attorney, Agent or Firm:
STANKIEWICZ, John W et al. (Peoria, IL, US)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: METHODS AND COMPOSITIONS FOR REDUCING SEED BRIDGING

Next Patent: POLAR POLYSTYRENE COPOLYMERS FOR ENHANCED FOAMING