Patent application number | Description | Published |
20090235650 | Liquid Injector Assembly with a Flanged Connector Connection - A system for injecting from an injector into a duct of an engine system is provided. The system may include a first flange on a duct connection side, a second flange on an injector connection side, a stand-off separating the first flange from the second flange to form an air gap therebetween, and a seal offset from at least one of the first and the second flanges and located within the airgap and between the first flange and the second flange. | 09-24-2009 |
20100024406 | Liquid Injector Assembly with a Flanged Connector Connection - A system for injecting from an injector into a duct of an engine system is provided. The system may include a first flange on a duct connection side, a second flange on an injector connection side, a stand-off separating the first flange from the second flange to form an air gap therebetween, and a seal offset from at least one of the first and the second flanges and located within the airgap and between the first flange and the second flange. | 02-04-2010 |
20100058738 | Engine Idling Duration Control - Systems and methods are described for controlling an engine in a vehicle. One example method includes, after a threshold duration of engine idling, continuing engine idle operation when an exhaust NOx sensor indicates a NOx level below a NOx threshold, and stopping engine idle and shutting down the engine when the exhaust NOx sensor indicates the NOx level is above the NOx threshold. | 03-11-2010 |
20100089037 | OPTIMIZED DISCRETE LEVEL SENSING SYSTEM FOR VEHICLE REDUCTANT RESERVOIR - An example emissions-control system of a vehicle includes a reservoir configured to contain a reductant solution, and an SCR device disposed in the exhaust system and configured to consume the reductant solution. The example emissions-control system further includes a base sensor responsive to whether a volume of the reductant solution exceeds a base volume, wherein the base volume is a sum of a dead volume of the reservoir plus a standard volume, and one or more elevated sensors corresponding to one or more elevated volumes. The example emissions-control system further includes an emissions sensor responsive to a NOX level in the exhaust system, and a misformulation indicator operatively coupled to the emissions sensor and to at least one of the base sensor and an elevated sensor, and configured to indicate when an excess NOX emission follows, within an interval, an increase in the volume of the reductant solution above the base volume or an elevated volume. The example emissions-control system may further include an insufficiency indicator operatively coupled to the base volume sensor and configured to indicate when the volume of the reductant solution becomes less than the base volume. | 04-15-2010 |
20100312445 | Controlling of a Vehicle Responsive to Reductant Conditions - Controlling a vehicle responsive to reductant conditions is provided. The method for controlling a vehicle having an engine with an exhaust, the exhaust having a reductant injection system including a reductant storage vessel, the engine further having a fuel system including a fuel storage vessel, may include under degraded reductant conditions, restricting vehicle motion in response to a fuel refill of the fuel storage vessel. | 12-09-2010 |
20110016957 | METHOD AND SYSTEM FOR MONITORING PROPER CONNECTION BETWEEN A VALVE/SEPARATOR AND AN INTAKE SYSTEM WITHIN A CCV SYSTEM - A method and system for monitoring proper connection between a valve/separator and an intake system through a crankcase ventilation system. A dielectric hose has an electrically hose conductive connector mechanically connectable to either: (a) an electrically conductive valve/separator connector, or (b) an electrically conductive intake system connector. An electrical circuit detects electrical continuity through the hose connector and the one of the valve/separator connector or the intake system connector mechanically connectable to said hose connector. | 01-27-2011 |
20110061373 | VEHICLE RELOCATABLE EXHAUST SYSTEM COMPONENTS - Modification of reductant (e.g., diesel exhaust fluid, DEF) tank location, for example during vehicle up-fitting may result in less than optimal operation of the DEF system due to inaccurate DEF system calibration. In one example approach, the above issue can be at least partially addressed by adjusting control system parameters for system control and diagnostics based on an input indicative of, or any modification to, the DEF tank location. In this way, DEF tank location flexibility is maintained, while also maintaining emission control and diagnostic accuracy. | 03-17-2011 |
20110067381 | Method for NOx Reduction - The present application relates to mitigating NOx emissions, and more particularly, to vehicles including a selective catalytic reduction (SCR) system in the exhaust of a diesel or gasoline engine. In one example a method includes temporarily increasing a liquid reductant dosing value injected by an injector from a first dosing value to a second dosing value, the temporary increase in response to a change from injecting liquid reductant onto a first impact location on a disperser device to injecting onto a second impact location on the disperser device. | 03-24-2011 |
20120143450 | Controlling of a Vehicle Responsive to Reductant Conditions - Controlling a vehicle responsive to reductant conditions is provided. The method for controlling a vehicle having an engine with an exhaust, the exhaust having a reductant injection system including a reductant storage vessel, the engine further having a fuel system including a fuel storage vessel, may include under degraded reductant conditions, restricting vehicle motion in response to a fuel refill of the fuel storage vessel. | 06-07-2012 |
20120192548 | SYSTEM AND METHOD FOR MONITORING REDUCTANT QUALITY - A method of operating an internal combustion engine having a reductant delivery and storage system in an emission control system, comprising of correlating a change in a monitored operating condition with a refill event to determine whether a reductant-diluting substance has been added to the reductant storage system; and limiting vehicle operation based on the correlation. | 08-02-2012 |
20120241540 | Liquid Injector Assembly with a Flanged Connector Connection - A system for injecting from an injector into a duct of an engine system is provided. The system may include a first flange on a duct connection side, a second flange on an injector connection side, a stand-off separating the first flange from the second flange to form an air gap therebetween, and a seal offset from at least one of the first and the second flanges and located within the airgap and between the first flange and the second flange. | 09-27-2012 |
20130116881 | MOTOR-VEHICLE ON-BOARD DIAGNOSTICS TO DISTINGUISH DEGRADATION FROM TAMPERING - A method for responding to conditions detected in an on-board diagnostic unit of a motor vehicle and signaling degradation of a component of the motor vehicle. The method includes providing a first response if the conditions signal degradation of the component due to tampering, and providing a second response if the conditions signal degradation of the component not due to tampering. | 05-09-2013 |
20130133309 | METHODS FOR AN EXHAUST FLUID SENSOR - Various methods are provided for diagnosing an exhaust fluid sensor disposed in an exhaust fluid passage. By monitoring the sensor during conditions when it is in contact with the exhaust fluid and when it is not in contact with the exhaust fluid, an expected change in the sensor output can be monitored to identify whether the sensor is generating sufficiently accurate readings. | 05-30-2013 |
20130219865 | VEHICLE RELOCATABLE EXHAUST SYSTEM COMPONENTS - Modification of reductant (e.g., diesel exhaust fluid, DEF) tank location, for example during vehicle up-fitting may result in less than optimal operation of the DEF system due to inaccurate DEF system calibration. In one example approach, the above issue can be at least partially addressed by adjusting control system parameters for system control and diagnostics based on an input indicative of, or any modification to, the DEF tank location. In this way, DEF tank location flexibility is maintained, while also maintaining emission control and diagnostic accuracy. | 08-29-2013 |
20130327118 | METHODS FOR AN EXHAUST FLUID SENSOR - Various methods are provided for diagnosing an exhaust fluid sensor disposed in an exhaust fluid passage. By monitoring the sensor during conditions when it is in contact with the exhaust fluid and when it is not in contact with the exhaust fluid, an expected change in the sensor output can be monitored to identify whether the sensor is generating sufficiently accurate readings. | 12-12-2013 |
20140102077 | METHODS AND SYSTEMS FOR AMMONIA SLIP DETECTION - Various systems and methods are described for detecting ammonia slip. In one example method, an amount of exhaust gas recirculation is reduced when output from an exhaust gas sensor indicates an increase in nitrogen oxide above a threshold amount. When the sensor output increases above a second threshold while the exhaust gas recirculation is reduced, the sensor output is allocated to nitrogen oxide; and when the sensor output does not increase above a second threshold while the exhaust gas recirculation is reduced, the sensor output is allocated to ammonia. | 04-17-2014 |