Title:
CONTROL STRATEGY FOR HEATED FLUID LINES
Document Type and Number:
WIPO Patent Application WO/2011/119514
Kind Code:
A3
Abstract:
A control strategy selectively controls the heating of fluid lines (128) equipped with line heaters (130) that may be utilized with a selective catalytic reduction system (120). The control strategy measures a tank temperature representative of reductant agent in a storage tank (124) and a representative ambient temperature representative of an ambient temperature proximate the fluid line (128). The control strategy determines a lowest possible reductant agent temperature ("LPRAT") based on the measured tank temperature and representative ambient temperature. The LPRAT is compared with a desired reductant agent temperature and, in response to the comparison, the control strategy may activate the line heater (128).
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Inventors:
MCCOY DARIN J (US)
FUNKE STEVEN J (US)
KING EDWARD (US)
FUNKE STEVEN J (US)
KING EDWARD (US)
Application Number:
PCT/US2011/029289
Publication Date:
January 26, 2012
Filing Date:
March 22, 2011
Export Citation:
Assignee:
CATERPILLAR INC (US)
MCCOY DARIN J (US)
FUNKE STEVEN J (US)
KING EDWARD (US)
MCCOY DARIN J (US)
FUNKE STEVEN J (US)
KING EDWARD (US)
International Classes:
F01N3/20; B01D53/94; F01N3/10; F01N9/00
Domestic Patent References:
| WO2009112516A1 | 2009-09-17 |
Foreign References:
| US20090205320A1 | 2009-08-20 | |||
| US6063350A | 2000-05-16 | |||
| US20090301067A1 | 2009-12-10 |
Attorney, Agent or Firm:
FAHLBERG, Robin, S. et al. (Peoria, IL, US)
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