| Patent application number | Description | Published |
|---|
| 20080307770 | APPROACH FOR CONTROLLING PARTICULATE MATTER IN AN ENGINE - A method of operating a diesel engine and an emission control system including a diesel particulate filter comprising of The inventors herein have realized that accurate particulate matter information for controlling processes and parameters may be realized by a method for operating an engine comprising of correlating a measured property associated with a carbon nanostructure layer to an amount of particulate matter from an exhaust stream of the engine, wherein the carbon nanostructure includes a plurality of carbon nanostructures, and adjusting engine operation based on the amount of particulate matter. | 12-18-2008 |
| 20090013665 | Monitoring of Exhaust Gas Oxygen Sensor Performance - A method of monitoring a performance of an oxygen sensor is disclosed. One embodiment comprises determining a first air/fuel ratio from a signal from an exhaust oxygen sensor; determining a second air/fuel ratio from a temperature upstream of the particulate filter, a pressure differential across the particulate filter and one or more of an airflow into the engine and a fuel flow into the engine; comparing the first air/fuel ratio and the second air/fuel ratio; and diagnosing an error condition of the oxygen sensor if the first air/fuel ratio does not meet a predetermined condition relative to the second air/fuel ratio. | 01-15-2009 |
| 20090044514 | Particulate Filter Regeneration - In one example, a method of operating an engine having a diesel particulate filter in a vehicle, the particulate filter having a length and depth, includes performing particulate filter regeneration in response to temperature variation across the length and/or depth of the particulate filter. | 02-19-2009 |
| 20100071354 | Engine Particulate Filter Regeneration - A particulate filter regeneration system is provided. In an example, the particulate filter regeneration system may be provided for use in an exhaust stream of an engine for filtering particulate. The particulate filter regeneration system may include an exhaust inlet, an exhaust chamber coupled downstream of the exhaust inlet, an exhaust outlet, and a flow-through wall coupled between the exhaust chamber and the exhaust outlet. The particulate filter regeneration system may further include a heater for heating the particulate filter regeneration system to enable particulate combustion and a bypass coupled to the exhaust chamber for selectively opening a filter regeneration pathway to remove accumulated particulate. | 03-25-2010 |
| 20110012585 | APPROACH FOR CONTROLLING PARTICULATE MATTER IN AN ENGINE - A method of operating a diesel engine and an emission control system including a diesel particulate filter comprising of The inventors herein have realized that accurate particulate matter information for controlling processes and parameters may be realized by a method for operating an engine comprising of correlating a measured property associated with a carbon nanostructure layer to an amount of particulate matter from an exhaust stream of the engine, wherein the carbon nanostructure includes a plurality of carbon nanostructures, and adjusting engine operation based on the amount of particulate matter. | 01-20-2011 |
| 20110252961 | Particulate Filter Regeneration - In one example, a method of operating an engine having a diesel particulate filter in a vehicle, the particulate filter having a length and depth, includes performing particulate filter regeneration in response to temperature variation across the length and/or depth of the particulate filter. | 10-20-2011 |
