Patent application number | Description | Published |
20080202473 | METHOD AND APPARATUS FOR RAPIDLY THAWING FROZEN NOX REDUCTANT - According to one aspect of the present invention, a liquid reductant tank for supplying liquid reductant to a selective catalytic reduction system is disclosed. The tank includes a tank cavity for holding a liquid reductant and being at least partially defined by one or more side walls; a liquid reductant supply line at least partially situated within the tank cavity and for communicating liquid reductant from the tank cavity to outside of the tank cavity; and a heating element situated at least partially within the liquid reductant supply line and for thawing frozen reductant situated within the supply line during cold start conditions to obtain liquid reductant for use in a selective catalytic reduction system. | 08-28-2008 |
20090019843 | Approach for Delivering a Liquid Reductant into an Exhaust Flow of a Fuel Burning Engine - An exhaust system for an internal combustion engine for a vehicle is provided. The system comprises an exhaust passage for transporting exhaust gases from the engine; an injector coupled to a wall of the exhaust passage, said injector including an injection axis that is angled relative to a longitudinal axis of a mixing region of the exhaust passage; and a first mixing device arranged within the exhaust passage downstream of the injector within the mixing region, said first mixing device including a plurality of flaps, wherein said plurality of flaps are inclined relative to the longitudinal axis; a second mixing device arranged within the exhaust passage downstream of the first mixing device; wherein the injection axis of the injector intersects the first mixing device. | 01-22-2009 |
20090205327 | Helical Exhaust Passage - A system for treating exhaust gasses from an engine is described. The system includes, the exhaust gasses routed from the engine to atmosphere through a helical exhaust passage, the system comprises an exhaust passage that receives an exhaust flow injected with a liquid reductant, the helical exhaust passage including a plurality of exhaust passages that separates the exhaust flow into separated smaller flows, wherein the smaller flows are re-introduced into a common passage and combine to form a single exhaust flow, and wherein the orientation of the plurality of exhaust passages impels the single exhaust flow to exhibit a helical flow pattern. | 08-20-2009 |
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 |
20090272440 | FREEZE PROTECTION FOR ON-BOARD VEHICLE EMISSIONS TREATMENT SYSTEM - Freeze protection of an on-board emissions treatment substance storage and distribution system in a vehicle includes moving the emissions treatment substance away from a primary fuel/vapor area after filling of the emissions treatment system. In one embodiment an on-board emissions treatment system has a fill tube with a portion extending into a primary fuel fill tube to facilitate co-fueling of the primary fuel and emissions treatment substance. A pressure differential or vacuum is created in the emissions treatment fill tube after filling to move the emissions treatment substance away from a check valve disposed at the terminal end of the fill tube to prevent freezing of the check valve after filling. The emissions treatment substance may be moved out of the co-located portion of the fill tube to an area where passive or active heating of the fill tube may be applied to further reduce susceptibility to freezing. | 11-05-2009 |
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 |
20100107614 | BYPASS PURGE FOR PROTECTING AGAINST FORMATION OF REDUCTANT DEPOSITS - Systems and methods for injecting liquid reductant into an engine exhaust are provided herein to address the above mentioned issues. An example system includes an injector having an outlet for injecting liquid reductant into the exhaust gas upstream of the reduction catalytic converter, a gas deflector positioned upstream of the injector where the gas deflector is configured to create a high pressure zone upstream of the deflector and a low pressure zone downstream of the deflector surrounding the injector outlet, a bypass flow passage configured to divert a portion of exhaust flow from the exhaust passage, the bypass flow passage having an inlet in the high pressure zone upstream of the deflector, and a collector in fluid communication with the bypass flow passage, the collector having one or more openings for allowing the bypassed portion of exhaust to flow out of the collector openings into the exhaust gas stream to form a gas shield for the liquid reductant spray. | 05-06-2010 |
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 |
20110120984 | Method and Apparatus for Rapidly Thawing Frozen NOx Reductant - According to one aspect of the present invention, a liquid reductant tank for supplying liquid reductant to a selective catalytic reduction system is disclosed. The tank includes a tank cavity for holding a liquid reductant and being at least partially defined by one or more side walls; a liquid reductant supply line at least partially situated within the tank cavity and for communicating liquid reductant from the tank cavity to outside of the tank cavity; and a heating element situated at least partially within the liquid reductant supply line and for thawing frozen reductant situated within the supply line during cold start conditions to obtain liquid reductant for use in a selective catalytic reduction system. | 05-26-2011 |
20120198843 | REGENERATIVE ASSISTED TURBOCHARGER SYSTEM - A turbocharged internal combustion engine having an engine control unit and apparatus coupled to the turbocharger, to assist in acceleration of the turbocharger in response to an acceleration signal from the engine control system and to decelerate the turbocharger in response a deceleration signal from the engine control unit. The apparatus absorbs energy from the turbocharger in response to the deceleration signal from the engine control unit to decelerate the turbocharger. The apparatus includes one or more hydraulic wheels on the same shaft of, and between, the turbine and compressor of the turbocharger, the one or more hydraulic wheels being driven in response to the acceleration signal to assist in acceleration of the turbocharger or absorb energy from the turbocharger shaft in response the deceleration signal. | 08-09-2012 |
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 |
20120260629 | System and Method for Liquid Reductant Injection - A method for operating a liquid reductant injection system is provided. The method includes storing a reductant mixture of ethanol, water, and urea; drawing the stored mixture into an electrically heated pick-up tube for delivery via a delivery line to the exhaust by operating a pump in a first direction; and, clearing a return line that returns the stored mixture or the delivery line by operating the pump in a second, reverse, direction. In this way, by including ethanol in the reductant solution, a freezing point temperature of the liquid reductant may be reduced. | 10-18-2012 |
20130098004 | FLUID-SPRAY ATOMIZER - An exhaust aftertreatment system is provided. In one embodiment, the system includes a catalyst, and injector positioned upstream from the catalyst, and a fluid-spray atomizer positioned between the catalyst and the injector. The fluid-spray atomizer includes a plurality of horizontal slats, wherein each horizontal slat is a different size and a smaller horizontal slat is nested at least partially inside a larger horizontal slat. | 04-25-2013 |
20130186076 | METHOD TO PROTECT THE EXHAUST MANIFOLD FROM OVERHEATING USING HEAT PIPE - An exhaust system for an engine is disclosed herein. The exhaust system includes a catalytic converter, an exhaust manifold upstream from the catalytic converter, and a heat pipe in thermal contact with the exhaust manifold and atmosphere. The system further includes a phase changing material that passively absorbs heat after catalytic light-off. | 07-25-2013 |
20130199164 | HEAT SYSTEM FOR AN ENGINE - An exhaust system for an engine is disclosed herein. The exhaust system includes a catalytic converter, a heat collector downstream from the catalytic converter, and a heat transfer system receiving waste exhaust heat via a thermosyphon evaporator for storage and/or use in a cabin heating system. In this way, waste heat is utilized to provide better cabin heating, particularly at engine cold start. | 08-08-2013 |
20130199750 | HEAT STORAGE SYSTEM FOR AN ENGINE - A method for recovering exhaust heat for an engine is disclosed herein. The method includes reducing a volume of a circulating heat transfer fluid and discharging a heat storage device to heat an engine component. The method further includes distributing the circulating heat transfer fluid to one or more engine systems. | 08-08-2013 |
20130199751 | HEAT STORAGE DEVICE FOR AN ENGINE - A heat recovery system for an engine is disclosed herein utilizing a heat storage unit configured to store waste exhaust heat for subsequent use on engine starts in various systems. In this way, improved system operation can be obtained by re-using such waste heat. | 08-08-2013 |
20130205756 | LIQUID REDUCTANT SYSTEM AND METHOD FOR OPERATION OF THE LIQUID REDUCTANT SYSTEM - A liquid reductant injection system is provided. The liquid reductant injection system includes a storage tank housing a reductant solution, a return conduit extending into the storage tank, the return conduit including an outlet positioned in the storage tank, and a thermosyphon comprising an evaporator coupled to an exhaust conduit and in fluidic communication with a condenser coupled to a portion of the return conduit inside the storage tank, the condenser positioned vertically above the evaporator. | 08-15-2013 |
20130239546 | MIXING SYSTEM - A mixing system is provided. The mixing system includes a housing defining a boundary of a mixing conduit including an expansion section with an injector mount and a reductant diverter extending into the conduit upstream of the injector mount in the expansion section. The mixing system further includes an atomizer with openings positioned in the housing and a helical mixing element positioned in the housing. | 09-19-2013 |
20130239923 | HEAT PIPE ASSEMBLY IN AN ENGINE LUBRICATION SYSTEM - An engine lubrication system is provided. The engine lubrication system includes an oil pan housing a lubricant, an oil pump having a pick-up tube including an inlet submerged in the lubricant, and a heat pipe assembly including a fluidly sealed heat pipe coupled to the oil pan adjacent to the inlet of the pick-up tube. | 09-19-2013 |
20130263574 | METHOD OF COLLECTION AND REUSE OF EXHAUST HEAT IN A DIESEL-POWERED VEHICLE - A heat transfer method for an engine is disclosed herein utilizing a heat battery configured to store waste exhaust heat in phase-chase materials for use during a subsequent engine start. By reusing waste exhaust heat in this manner, exhaust emissions may be reduced, and delays in heating the vehicle cabin and other vehicle systems after engine start may be reduced. | 10-10-2013 |
20140026869 | FUEL DELIVERY SYSTEM INCLUDING A HEAT PIPE ASSEMBLY - A fuel delivery system is provided herein. The fuel delivery system may include a fuel tank storing a liquid fuel, a return fuel line including an outlet opening into the fuel tank, and a heat pipe assembly including a first end positioned in a surrounding atmosphere, and a second end positioned at and coupled to the return fuel line. | 01-30-2014 |
20140047853 | MOTOR VEHICLE CLIMATE CONTROL SYSTEM - A vehicle climate control system includes a thermal-adsorption heat pump driven by engine exhaust heat, the heat pump including two adsorbers asynchronously switching between adsorbing and desorbing modes, each adsorber coupled with a corresponding antifreeze tank via a plurality of refrigerant-containing wick chambers. Cold heat transfer fluid (HTF) flows through the adsorber during the adsorbing mode which causes evaporation of refrigerant from the wick chambers, thereby cooling antifreeze, whereas hot HTF flows through the adsorber during the desorbing mode which causes condensation of refrigerant at the wick chambers, thereby heating antifreeze. In this way, the thermal-adsorption heat pump may condition cabin air independent of engine coolant and without exerting a load on the engine. | 02-20-2014 |
20140053579 | MOTOR VEHICLE CLIMATE CONTROL SYSTEM - A vehicle climate control system operable in a winter mode and a summer mode includes an engine-exhaust-driven hot heat transfer fluid (HTF) circuit coupled with a heater core during the winter mode to provide passenger cabin heating, and thermal energy stored in a standalone hot phase change material (PCM) battery in the hot HTF circuit may provide surge heating at or prior to engine start. The hot HTF circuit and a cold HTF circuit including an HTF cooler drive two adsorbers in the summer mode, thereby providing passenger cabin cooling in conjunction with a refrigerant circuit which includes a condenser, evaporator, expansion valve, and standalone cold PCM battery. Thermal energy stored in the standalone cold PCM battery may provide surge cooling at or prior to engine start. | 02-27-2014 |
20140345257 | MIXING SYSTEM - A mixing system is provided. The mixing system includes a housing defining a boundary of a mixing conduit including an expansion section with an injector mount and a reductant diverter extending into the conduit upstream of the injector mount in the expansion section. The mixing system further includes an atomizer with openings positioned in the housing and a helical mixing element positioned in the housing. | 11-27-2014 |