Patent application number | Description | Published |
20090283059 | ENHANCED OXYGEN PRESSURE ENGINE - Systems and methods of operation for internal combustion engines which employ molecular sieve technology to provide enhanced oxygen content in the air-fuel mixture during operation. | 11-19-2009 |
20100043402 | PASSIVE AMMONIA-SELECTIVE CATALYTIC REDUCTION FOR NOx CONTROL IN INTERNAL COMBUSTION ENGINES - A method for operating an internal combustion engine includes controlling the engine to a preferred air/fuel ratio to generate an engine-out exhaust gas feedstream including preferred concentrations of nitric oxide, carbon monoxide, and hydrogen, converting the nitric oxide, carbon monoxide, and hydrogen to ammonia across a first catalytic device; and storing the ammonia on an ammonia-selective catalytic reduction device fluidly serially connected downstream of the first catalytic device. | 02-25-2010 |
20110120099 | SYSTEMS AND METHODS FOR REDUCING NOx BREAKTHROUGH - An exhaust system includes main line that runs through a three way converter (TWC) and then a lean NO | 05-26-2011 |
20110252766 | METHOD OF PRODUCING AMMONIA EFFECTIVE TO CONTROL AFTERTREATMENT CONDITIONS OF NOx EMISSIONS - A method for reducing NOx molecules in an exhaust flow within an exhaust aftertreatment system of an internal combustion engine includes storing NOx from the exhaust flow on a NOx storage component within an aftertreatment device exposed to the exhaust flow. When the exhaust flow includes molecular hydrogen, he stored NOx is released to create ammonia in the exhaust flow. In a selective catalytic reduction device that is downstream of the aftertreatment device, the created ammonia is utilized to reduce NOx in the exhaust flow. | 10-20-2011 |
20120096834 | OPTIMIZED ELECTRICALLY HEATED EXHAUST GAS TREATMENT SYSTEM - A method of sizing a light-off core supporting a fixed quantity of a light-off catalyst for an exhaust gas treatment system having an electric heater upstream of the light-off catalyst for heating the exhaust gas includes measuring the cumulative hydrocarbon or carbon monoxide emissions leaving the exhaust gas treatment system for multiple volumetric sizes of the light-off core in accordance with a heating strategy. Alternatively, a model of the treatment system may be used to predict the cumulative hydrocarbon or carbon monoxide emissions. The method further includes selecting the volumetric size of the light-off core that is associated with the lowest cumulative hydrocarbon or carbon monoxide emissions level from the measured or predicted hydrocarbon or carbon monoxide emissions when the exhaust gas is heated in accordance with the heating strategy. The heating strategy may include pre-crank heating, post-crank heating, or a combination of pre-crank heating and post crank heating. | 04-26-2012 |
20120102922 | METHOD OF SIZING A HEATING CORE OF AN EXHAUST HEATER FOR AN EXHAUST TREATMENT SYSTEM OF A VEHICLE - A method of sizing a heating core of an exhaust heater for an exhaust gas treatment system includes measuring the cumulative hydrocarbon or carbon monoxide emissions from the exhaust gas for multiple volumetric sizes of the heating core when heated in accordance with a heating strategy. Alternatively, a model of the treatment system may be used to predict the cumulative hydrocarbon or carbon monoxide emissions. The method further includes selecting the volumetric size of the heating core that is associated with the lowest cumulative hydrocarbon or carbon monoxide emissions level from the measured or predicted hydrocarbon or carbon monoxide emissions when the exhaust gas is heated in accordance with the heating strategy. The heating strategy may include pre-crank heating, or a combination of pre-crank heating and post-crank heating. | 05-03-2012 |
20120107187 | HEATING MODULE FOR AN EXHAUST GAS TREATMENT SYSTEM - An exhaust gas treatment system includes a heating module for heating exhaust gas upstream of a main catalytic converter. The heating module includes a first heating core having a first core volumetric size and a second heating core having a second core volumetric size that is less than the first core volumetric size. The first heating core with the larger first core volumetric size is configured to optimize pre-crank heating, while the second heating core with the smaller second core volumetric size is configured to optimize post-crank heating. The first heating core and the second heating core may be arranged in series with each other or in parallel with each other. | 05-03-2012 |
20120304622 | METHOD OF USING A REGENERATIVE BRAKE SYSTEM FOR HEATING A MOTOR VEHICLE CATALYTIC CONVERTER AND POWERING OTHER ELECTRICAL ACCESSORIES - A method for a motor vehicle includes using a regenerative brake system that produces electric current as a result of application of said regenerative brakes and sending at least a fraction of the electric current directly to an electrical accessory of the vehicle and bypassing the battery. One electrical accessory may be an electrically heated catalytic converter. | 12-06-2012 |