Robust egr control for counteracting exhaust back-pressure fluctuation attributable to soot accumulation in a diesel particulate filter
CA 2591684 C · Owner: Zhang, Gregory · Inventors: Zhang, Gregory
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An engine (10) uses a method for counteracting the effect of soot accumulation in a diesel particulate filter (DPF 38) in a diesel engine exhaust system (16) on the control of exhaust gas recirculation (EGR) through an EGR system (40). Engine speed (N) and indicated engine torque (TQI) data are processed to select from a map (62) a data value for present EGR volumetric efficiency. The selected data value and certain other data including data that accounts for , present soot accumulation in the DPF are processed to develop a data value indicative of present total mass flow. The data value indicative of present total mass flow and still other data are processed to develop flow control …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 1, 2005 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 1, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.