Invention Grant
- Patent Title: Diagnostics for hydrocarbon injection for filter regeneration
- Patent Title (中): 用于过滤器再生的碳氢化合物注入的诊断
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Application No.: US13877821Application Date: 2010-10-04
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Publication No.: US09051867B2Publication Date: 2015-06-09
- Inventor: Massimo Fontana
- Applicant: Massimo Fontana
- Applicant Address: US IL Lisle
- Assignee: International Engine Intellectual Property Company, LLC
- Current Assignee: International Engine Intellectual Property Company, LLC
- Current Assignee Address: US IL Lisle
- Agent Jeffrey P. Calfa; Mark C. Bach
- International Application: PCT/US2010/051276 WO 20101004
- International Announcement: WO2012/047193 WO 20120412
- Main IPC: F01N3/00
- IPC: F01N3/00 ; F01N11/00 ; F01N3/025 ; F01N3/035 ; F01N3/10 ; F01N9/00 ; F01N13/00
Abstract:
A method of determining a malfunction in a hydrocarbon injection system for an internal combustion engine having an exhaust system with a diesel particulate filter and a diesel oxidation catalyst, is provided. An efficiency of a diesel oxidation catalyst to convert hydrocarbons injected for regeneration of a diesel particulate filter into heat is estimated based upon an input temperature of the diesel oxidation catalyst, an output temperature of the diesel oxidation catalyst, and an output temperature of a diesel particulate filter. The estimated efficiency is compared to a predetermined stored efficiency value. An indication of a malfunction is generated when the comparison of the estimated efficiency to the predetermined stored efficiency exceeds a threshold amount.
Public/Granted literature
- US20130227935A1 DIAGNOSTICS FOR HYDROCARBON INJECTION FOR FILTER REGENERATION Public/Granted day:2013-09-05
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