Method and system for controlling temperatures of exhaust gases emitted from an internal combustion engine to facilitate regeneration of a particulate filter
AssigneeDetroit Diesel Corporation
InventorsKevin Sisken, Zornitza Pavlova-MacKinnon
Life of this patent
Estimating the term…
Abstract
Method, system, and controller for increasing exhaust gas temperatures through controlled operation of a radiator fan in order to facilitate regeneration of a particulate filter. The method, system, and controller being applicable in systems having an engine which emits exhaust gases having particulates which are captured by the particulate filter.
Claims20
A method for controlling temperatures of exhaust gases emitted from an internal combustion engine to facilitate regeneration of particulates captured with a particulate filter, the internal combustion engine having a number of cylinders for internal combustion which emit exhaust gases and the particulate filter being in fluid communication with the emitted exhaust gases to capture particulates, the method comprising:
- determining a desired increase in exhaust gas temperature relative to current exhaust gas temperatures, the desired increase in exhaust gas temperature corresponding with a need to increase exhaust gas temperatures in order to facilitate regenerate of the particulate filter;
- and
- operating a radiator fan as a function of the desired increase in exhaust gas temperature to increase load on the engine and thereby exhaust gas temperature so as to emit exhaust gases from the engine to meet the desired increase in exhaust gas temperature.
A method for controlling temperatures of exhaust gases emitted from an internal combustion engine to facilitate regeneration of particulates captured with a particulate filter, the internal combustion engine having a number of cylinders for internal combustion which emit exhaust gases and the particulate filter being in fluid communication with the emitted exhaust gases to capture particulates, the method comprising:
- determining a desired increase in exhaust gas temperature;
- and
- operating a radiator fan as a function of the desired increase in exhaust gas temperature to increase load on the engine and thereby exhaust gas temperature so as to emit exhaust gases from the engine to meet the desired increase in exhaust gas temperature independently of an engine coolant fluid temperature.
A method for controlling temperatures of exhaust gases emitted from an internal combustion engine to facilitate regeneration of particulates captured with a particulate filter, the internal combustion engine having a number of cylinders for internal combustion which emit exhaust gases and the particulate filter being in fluid communication with the emitted exhaust gases to capture particulates, the method comprising:
- determining a desired increase in exhaust gas temperature as a function of exhaust gas temperatures at an oxidation catalyst or a particular cannister of the particulate filter;
- and
- operating a radiator fan as a function of the desired increase in exhaust gas temperature to increase load on the engine and thereby exhaust gas temperature so as to emit exhaust gases from the engine to meet the desired increase in exhaust gas temperature.
Dependencies are inferred from the claim text.