Patent application number | Description | Published |
20080296174 | System and Method for Improving Accuracy of a Gas Sensor - An electrochemical gas sensor and methods of operating an electrochemical gas sensor are disclosed. In one embodiment, an electrochemical gas sensor comprising a measuring electrode pair configured to measure a gas species and a pumping electrode pair configured to reduce an amount of an interfering species in a sample in the electrochemical gas sensor is operated by obtaining a measurement of the interfering species at a location spatially adjacent to a measuring electrode of the measuring electrode pair, and adjusting one or more of an operation or an output processing of the electrochemical gas sensor based on the measurement of the interfering species. | 12-04-2008 |
20090288469 | SELF-CALIBRATING NOx SENSOR - A system for calibrating a response to an exhaust-stream NO | 11-26-2009 |
20100205938 | NOx SENSOR AMBIENT TEMPERATURE COMPENSATION - Various systems and methods are described for controlling an engine in a vehicle during engine operation, the engine having an exhaust and a NO | 08-19-2010 |
20100236532 | HUMIDITY DETECTION VIA AN EXHAUST GAS SENSOR - Various systems and methods are described for operating an engine in a vehicle in response to an ambient humidity generated from an exhaust gas sensor. One example method comprises, during engine non-fueling conditions, where at least one intake valve and at least one exhaust valve of the engine are operating, generating an ambient humidity from the exhaust gas sensor and, under selected engine combusting conditions, adjusting an engine operating parameter based on the ambient humidity. | 09-23-2010 |
20110153256 | SELF-CALIBRATING NOx SENSOR - A system for calibrating a response to an exhaust-stream NO | 06-23-2011 |
20130307481 | Technique for Rapid Battery Capacity Testing - A method of rapidly testing the discharge capacity of a battery comprises discharging the battery at a first discharge rate until a first cutoff potential is reached, relaxing the battery during a first period, discharging the battery at a lower discharge rate until a second cutoff potential is reached and relaxing the battery during a second, longer period. The process is repeated with successively lower discharge rates and successively longer relaxation periods until the battery is substantially exhausted. The cumulative value of all of the discharges is taken as a tested capacity of the battery. Optionally, cleanup charges can be sent to the battery during the relaxation periods and a low-frequency, low-amplitude current can be supplied throughout testing in order to shorten testing time. | 11-21-2013 |
20150147608 | ESTIMATING CORE TEMPERATURES OF BATTERY CELLS IN A BATTERY PACK - A method and a system of estimating core temperatures of battery cells in a battery pack can include several steps. In one step, a surface temperature of one or more battery cell(s) is received, a current of the one or more battery cell(s) is received, an inlet temperature of coolant provided to the battery pack is received, and a flow rate or velocity of the coolant is received. In another step, estimations are made including those of a cell-lumped internal electrical resistance of the battery cell(s), a cell-lumped conduction resistance between a core and a surface of the battery cell(s), and a cell-lumped convection resistance between the surface and the coolant. In yet another step, an estimation is made of a core temperature of the battery cell(s) based upon the received and estimated values of previous steps. | 05-28-2015 |