Exhaust treatment device monitoring system
AssigneeCaterpillar Inc.
InventorGeorge Lin
Life of this patent
Estimating the term…
Abstract
An exhaust system is provided having an exhaust path configured to direct an exhaust stream away from an engine. The system may also include an exhaust treatment device in the exhaust path and configured to act on one or more substances in the exhaust stream. Further, the system may include at least one temperature sensing device configured to provide an output indicative of a temperature at one or more locations on a working material of the exhaust treatment device. In addition, the system may include a controller configured to generate a temperature map of the working material of the exhaust treatment device and to determine deviations from an expected temperature map.
Claims31
An exhaust system, comprising:
- an exhaust path configured to direct an exhaust stream away from an engine;
- an exhaust treatment device in the exhaust path and configured to act on one or more substances in the exhaust stream;
- at least one temperature sensing device configured to provide an output indicative of a temperature at one or more locations on a working material of the exhaust treatment device;
- and
- a controller configured to generate a temperature map of the working material of the exhaust treatment device and to determine deviations from an expected temperature map.
A method of monitoring an exhaust treatment device, comprising:
- directing an exhaust stream from an engine to the exhaust treatment device;
- generating a temperature map of a working material of the exhaust treatment device;
- and
- determining deviations from an expected temperature map.
A work machine, comprising:
- an operator station;
- at least one traction device;
- an internal combustion engine;
- an exhaust path configured to direct an exhaust stream away from the internal combustion engine;
- an exhaust treatment device in the exhaust path and configured to act on one or more substances in the exhaust stream;
- at least one temperature sensing device configured to provide an output indicative of a temperature at one or more locations on a working material of the exhaust treatment device;
- and
- a controller configured to generate a temperature map of the working material of the exhaust treatment device and to determine deviations from an expected temperature map.
Dependencies are inferred from the claim text.