Joan Wills

US Patent:

7707826, May 4, 2010

Filed:

Nov 7, 2006

Appl. No.:

11/593802

Inventors:

Yue Yun Wang - Troy MI, US
Sriram Satya Srinivas Popuri - Greenwood IN, US
Michael J. Ruth - Franklin IN, US
Michael J. Cunningham - Greenwood IN, US
Joan M. Wills - Nashville IN, US
Jer-Sheng J. Chen - Naperville IL, US
Samuel C. Geckler - Columbus IN, US

Assignee:

Cummins, Inc. - Columbus IN

International Classification:

F01N 3/00

US Classification:

60295, 60274, 60286, 60297

Abstract:

A system, method, and software for triggering regeneration of an adsorber connected with a flow of exhaust from an engine. An exhaust sulfur flow rate module estimates a sulfur accumulation rate associated with an adsorber as a function of a flow of fuel. A sulfur removal rate module estimates a sulfur removal rate associated with the adsorber. An accumulated sulfur loading module includes a counter the value of which is increased as a function of the sulfur accumulation rate and decreased as a function of the sulfur removal rate. A combustion manager module controls an engine to regenerate the adsorber once the counter reaches an upper threshold value.