Patent application number | Description | Published |
20110030349 | QUICK-HEATING OF A UREA SUPPLY CONDUIT FOR AN ENGINE EXHAUST AFTER-TREATMENT SYSTEM - A urea supply conduit ( | 02-10-2011 |
20110252765 | EXHAUST THROTTLE VALVE SYSTEM AND METHOD FOR DIESEL PARTICULATE FILTER REGENERATION - An exhaust gas aftertreatment system ( | 10-20-2011 |
20120247089 | INSULATED MAIN NH3 CARTRIDGE SYSTEM WITH SEPARATE START-UP UNIT - A system and method relate to a reductant dosing for use in the reduction of NOx in an exhaust stream is disclosed. The system and method incorporates a separate first or start-up cartridge and an insulated mantel or housing containing at least one to a plurality of main cartridges. The first and main cartridges store an ammonia adsorbing/desorbing material, which releases ammonia gas upon application of sufficient heat. The start-up cartridge permits the initial release of ammonia gas into the exhaust stream even during start-up of an engine, and because it is separate from the main cartridge, the first cartridge cools faster than the main cartridge and can be replenished with ammonia sooner than the main cartridge. The start-up cartridge is housed in or surrounded by a non-insulating debris shield. | 10-04-2012 |
20130160430 | SYSTEM AND METHOD OF CONTROLLING MAXIMUM HYDROCARBON INJECTION FOR DIESEL PARTICULATE FILTER REGENERATION - A method of providing hydrocarbons to an engine exhaust for regenerating a diesel particulate filter within an exhaust system of a diesel engine. A mass flow rate of exhaust gas within an exhaust system is determined. A mass flow rate of oxygen within the exhaust gas entering the diesel oxidation catalyst is determined. A set point indicative of an allowable mass flow rate of oxygen within the exhaust gas exiting the diesel oxidation catalyst is received. A hydrocarbon threshold that may be injected into the exhaust system is calculated. Hydrocarbons are injected into the exhaust system upstream of the diesel oxidation catalyst, wherein the injected hydrocarbons do not exceed the calculated threshold amount of hydrocarbons. | 06-27-2013 |
20140230412 | TRAPPED SOOT ESTIMATOR - A diesel engine ( | 08-21-2014 |
20140360169 | POST THERMAL CONTROL DEVICE FOR USE WITH A NOx SLIP CATALYST - A system and method for treating diesel exhaust in a diesel exhaust system, and specifically for improved NO | 12-11-2014 |
20150052879 | MIXING PLATE AS STABILIZER FOR AMMONIA GAS INJECTOR - A system for mixing ammonia (reductant) with engine exhaust includes an exhaust flow created by a vehicle engine, an ammonia feed line passing into the exhaust flow, an injector connected to the feed line and positioned within the exhaust flow, the injector having at least one port for discharging ammonia into the exhaust flow, and a mixing plate positioned within the exhaust flow downstream of the ammonia injector and stabilizing at least one of either the feed line and the injector. An aspect of the invention is to stabilize the injector by attaching the mixing plate to the feed line to provide such stability. Alternatively or additionally, the mixing plate is attached to the injector to stabilize. The feed line may even pass through the mixing plate. | 02-26-2015 |
20150071824 | MIXING PLATE PROVIDING REDUCTANT DISTRIBUTION - A reductant mixing system having injector and mixing plate positioned within mixing canister is disclosed. Injector discharges reductant directly into vehicle exhaust gases. Mixing plate effects turbulence to mix gases for NO reduction. Mixing plate includes plurality of arms each having surface area and extending from center of plate, barrier region defined by collective surface areas of arms and substantially centered for diverting fluid flow outward, and first and second cut-outs, which allow the gases diverted by barrier region to pass mixing plate into adjacent canister of exhaust treatment system. Each of the first cutouts is defined by outer edge between adjacent arms, and second tier of cut-outs defined by inner edge proximate end of each arm. | 03-12-2015 |
20150086427 | LINE BREAK INDICATOR (WIRE IN AMMONIA LINES) - Reductant delivery system having at least one canister containing reductant coupled, via delivery line, to after-treatment system having ammonia injector, is disclosed. Reductant includes ammonia adsorbing/desorbing material. Delivery line is connected at one end to ammonia injector and at another end detachably coupled by coupler to the canister. Controller may be used for metering flow of ammonia through delivery line to injector. Line-break detector detects disconnection within the delivery line to prevent loss of ammonia. Line-break indicator coupled to line-break detector is used, wherein the indicator activates upon the detector detecting a disconnection in the delivery line. Related methods for detecting and indicating a line break are disclosed. | 03-26-2015 |