| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 060288000 | Exhaust gas diverted from reactor or treating agent mixer | 12 |
| 20080271439 | Exhaust Line for Heat Engine - The invention relates to an exhaust line ( | 11-06-2008 |
| 20080295499 | Exhaust system utilizing a low-temperature oxidation catalyst - An exhaust treatment system is provided having a first exhaust passageway fluidly connected to an engine. A particulate filter and a selective catalytic reduction catalyst are situated within the first exhaust passageway. In addition, the system has a first oxidation catalyst located within the first exhaust passageway upstream of the particulate filter and the selective catalytic reduction catalyst. The system also has a second exhaust passageway fluidly connected to the first exhaust passageway upstream and downstream of the first oxidation catalyst. The exhaust treatment system further has a sensor configured to sense a parameter indicative of an exhaust gas temperature. Furthermore, the system has a controller configured to direct exhaust gas through the first oxidation catalyst when the exhaust gas temperature is below a threshold temperature and direct the exhaust gas through the second exhaust passageway when the exhaust gas temperature is above the threshold temperature. | 12-04-2008 |
| 20090056317 | EXHAUST GAS VALVE - The invention relates to an exhaust gas line for exhaust gas from at least one cylinder of an internal combustion engine, having at least one collecting housing ( | 03-05-2009 |
| 20090126352 | EMISSION CONTROL DEVICE - A system comprising an engine having a first and second bank of cylinders, said first bank having a first and second group of cylinders, said second bank having a third and fourth group of cylinders; a first emission control device coupled to said first and second group for treating gasses from said first and second group separately; a second emission control device coupled to said third and fourth group for treating gasses from said third and fourth group separately; and a controller for operating said first and third group about stoichiometry and said second and fourth group to pump air without injected fuel. | 05-21-2009 |
| 20090183498 | Exhaust emission control device - An exhaust emission control device includes an adsorbent trapper having an adsorbent for adsorbing and desorbing hydrocarbon in exhaust gas, a catalytic converter, a main exhaust gas passage with a first valve, a bypass exhaust gas passage with a second valve and a control unit. The bypass exhaust gas passage bypassing the first valve is connected with the adsorbent. The control unit controls the first and second valves to desorb the hydrocarbon from the adsorbent when a condition is satisfied. The condition is that the catalyst converter is in active, an oxygen adsorption amount of the catalyst converter is not less than a first predetermined amount and an exhaust gas amount is not more than a second predetermined amount. The first valve is opened and the second valve is closed when the condition is not satisfied during desorption of the hydrocarbon from the adsorbent. | 07-23-2009 |
| 20100077736 | EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE - In a treatment for regenerating the purification capability of an exhaust emission control system, a technique for improving exhaust emission more positively is provided by supplying a reducing agent to the exhaust emission control system and allowing part of exhaust to bypass the exhaust emission control system. When an addition synchronous bypass control is carried out in which an reducing agent is added when an NSR is subject to NOx reduction treatment and the volume of exhaust passing through a bypass pipe out of exhaust passing an exhaust pipe is increased to thereby decrease the volume of exhaust passing through the NSR, a judgment is made (S | 04-01-2010 |
| 20100107611 | METHOD AND APPARATUS FOR EXHAUST AFTERTREATMENT IN AN INTERNAL COMBUSTION ENGINE - A method and system for managing an exhaust gas feedstream from an internal combustion engine operative lean of stoichiometry includes steps and apparatus for diverting exhaust around a three-way catalytic converter during NOx adsorber regeneration thereby increasing reductants available in the NOx adsorber to react with the adsorbed NOx. | 05-06-2010 |
| 20100132340 | EXHAUST GAS PURIFYING APPARATUS FOR INTERNAL COMBUSTION ENGINE - An object of the present invention is to provide an exhaust gas purifying apparatus for an internal combustion engine which can properly purge at least NOx of unpurified components contained in exhaust gas while considering characteristics of NOx desorbed from an adsorbent. A bypass passage | 06-03-2010 |
| 20100307141 | EXHAUST GAS PURIFICATION DEVICE AND EXHAUST GAS PURIFICATION METHOD FOR INTERNAL COMBUSTION ENGINE - A moisture adsorbent ( | 12-09-2010 |
| 20110041482 | METHOD AND APPARATUS FOR EXHAUST AFTERTREATMENT OF AN INTERNAL COMBUSTION ENGINE - An exhaust gas aftertreatment device includes a single intake path for an exhaust gas feedstream from an internal combustion engine and a coated substrate including a first substrate portion fluidly in parallel with a second substrate portion. A flow modification device selectively restricts flow of the exhaust gas feedstream exclusively to the first substrate portion, exclusively to the second substrate portion, and concurrently to the first substrate portion and the second substrate portion in controllably variable proportions. | 02-24-2011 |
| 20110041483 | METHOD OF CONTROLLING FUEL IN AN EXHAUST TREATMENT SYSTEM IMPLEMENTING TEMPORARY ENGINE CONTROL - An exhaust treatment system associated with a power source is disclosed. The exhaust treatment system may have a filter located to remove particulate matter from a flow of exhaust, and a regeneration device located proximal the filter. The exhaust treatment system may also have a first fluid handling component located upstream of the power source to vary an amount of oxygen in the flow of exhaust, a second fluid handling component located downstream of the power source to vary the amount of exhaust air flow in the exhaust circuit, and a controller in communication with the regeneration device and the fluid handling component. The controller may determine a need for filter regeneration, and determine adjustments to the first and second fluid handling components required to provide sufficient oxygen and air mass flow in the exhaust for filter regeneration. The controller may further determine an effect the adjustments will have on operation of the power source, and determine corrections for the power source to account for the effects. The controller may substantially simultaneously implement the adjustments and the corrections. | 02-24-2011 |
| 20160108787 | BYPASS EXHAUST PATHWAY TO ALLOW GASES TO BYPASS THE START CATALYST OF A VEHICLE - A system for improving the fuel economy of a vehicle includes an engine configured to produce an initial exhaust gas, a first exhaust pipe connected to the engine, a start catalyst connected to the first exhaust pipe and a second exhaust pipe connected to the start catalyst. The system also includes a bypass exhaust pipe connected to the first exhaust pipe and the second exhaust pipe and a valve positioned at one end of the bypass exhaust pipe and configured to move between a closed position and an open position for directing the initial exhaust gas to the start catalyst and/or the bypass exhaust pipe. The system includes an electronic control unit that is used to control the first valve to be in the closed position or the open position based on an estimated temperature of the start catalyst. | 04-21-2016 |
