CUMMINS IP, INC Patent applications |
Patent application number | Title | Published |
20160131010 | Apparatus, Method, and System for Diagnosing Reductant Deposits in an Exhaust Aftertreatment System - An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system that delivers reductant to an exhaust stream in an exhaust aftertreatment system. A temperature sensor may be positioned in or near the flow of reductant and exhaust to measure the temperature of the reductant and exhaust. A change in temperature over time, such as an increase, decrease, or change in variation amplitude, may indicate the presence of a reductant deposit in the system. Detection of the deposit may initiate a regeneration cycle in which the operating characteristics of the system change to eliminate the reductant deposit to prevent it from hindering the performance of the exhaust aftertreatment system. | 05-12-2016 |
20160097704 | Temperature Compensation for Particulate Matter Sensor Regeneration - The present disclosure relates to a controller apparatus for regenerating a particulate matter sensor. The controller apparatus includes a sensing module configured to detect a soot loading on a particulate matter sensor and generate a regeneration request indicating a desired regeneration temperature and a heating module configured to receive the regeneration request and send a heating command signal to a heating element based on the regeneration request. The controller apparatus also includes an electrical resistance module configured to detect an electrical resistance in the heating element, a calibration module configured to determine an actual temperature of the heating element based on a resistance-to-temperature model, and a temperature feedback module configured to modify the heating command signal according to the difference between the desired regeneration temperature and the actual temperature. | 04-07-2016 |
20160040575 | PUMP PURGE FOR UREA DOSING SYSTEM - According to one embodiment, a diesel exhaust fluid purging system includes a metering valve with a supply port and a delivery port. The purging system also includes a pump assembly that is fluidly connected to the supply port of the metering valve. The pump assembly includes a pump and a single supply line that is fluidly connectable with a diesel exhaust fluid source. The purging system further includes an injection assembly that is fluidly connected to the delivery port of the metering valve. The injection assembly includes an air supply line that is fluidly connectable with an air supply source. Additionally, the purging system includes a controller in electrical communication with the metering valve, the pump assembly, and the injection assembly. The controller is configured to purge the pump assembly of residual diesel exhaust fluid using air from the air supply line. | 02-11-2016 |
20160032805 | Reintroduction of Air in Delivery System Accumulator - According to one embodiment, an apparatus for reintroducing air includes a bypass valve that reduces pressure in an accumulator that stores reductant to less than an air supply pressure of an air supply. The apparatus also includes a metering valve that fills the accumulator with air from the air supply at the air supply pressure, and a pump that pumps reductant into the accumulator. | 02-04-2016 |
20160003170 | SYSTEM AND METHOD FOR DUAL FUEL ENGINES - Disclosed herein is a system for managing combustion in an internal combustion engine includes a detection module that determines a combustion condition of the internal combustion engine. The combustion condition includes one of a first combustion condition or second combustion engine. The system also includes a fuel table module that receives the combustion condition and selects an engine operating request based on data in a first fuel table when the combustion condition is the first combustion condition, and data in a second fuel table when the combustion condition is the second combustion condition. The system additionally includes an engine control module that receives the engine operating request and generates engine operating commands based on the engine operating request. | 01-07-2016 |
20160001229 | PARTICULATE MATTER FILTER WITH CATALYTIC ELEMENTS - Described herein is a selective catalytic reduction (SCR) filter that includes a substrate that includes a first surface on a first side of the substrate and second surface on a second side of the substrate. The SCR filter further includes a semi-permeable membrane applied to the first surface. Additionally, the SCR filter includes an SCR washcoat applied to the second surface. | 01-07-2016 |
20150369169 | INTERNAL COMBUSTION ENGINE - An internal combustion engine and related components and methods of manufacturing and implementing an internal combustion engine and related components. The internal combustion engine includes a base, a cylinder block mounted onto the base, a cylinder head mounted onto the block, and a structural overhead member mounted onto the cylinder head, such that the cylinder head is positioned between the cylinder block and the structural overhead member. At least one through-bolt positioned in a through-bolt opening, the through-bolt opening extending from the base to the structural overhead member through the cylinder block and the cylinder head to couple the base, the cylinder block, the cylinder head and the structural overhead member together. | 12-24-2015 |
20150369098 | ENGINE LUBRICATION SYSTEM - Engine lubrication systems and methods of manufacturing and implementing engine lubrication systems and methods. In particular embodiments, an engine system includes an internal combustion engine lubrication system that utilizes a stacked configuration of a through-bolted engine to pattern around through-bolts and utilizes substantially hollow bulkheads to define a central high-pressure lubrication reservoir that minimizes lube system pressure while maintaining pressure at the extremities of the lubrication circuit. Available space is utilized within the bulkheads to provide a lubrication drainage restriction for reducing lubrication losses at engine shut-down. | 12-24-2015 |
20150354484 | THERMAL MANAGEMENT CONTROL USING LIMITED BANK OPERATION - Disclosed herein is an apparatus for managing combustion in an internal combustion engine that includes an operating condition module configured to determine an operating load of an internal combustion engine. The internal combustion engine can includes multiple banks of cylinders. The apparatus further includes a cylinder bank control module configured to select at least one bank of cylinders of the multiple banks of cylinders to be operational based on the determined operating load of the engine. The apparatus also includes a cylinder bank command module configured to generate a cylinder bank command based on a cylinder bank control instruction received from the cylinder bank control module, the cylinder bank control instruction comprising the selection of the at least one operational bank of cylinders. | 12-10-2015 |
20150337927 | SPACER FOR BELT TENSIONER - A belt assembly for internal combustion engine that has a tensioner mount is described. The belt assembly includes a spacer that is rotatably coupleable to the tensioner mount, and a tensioner that is co-rotatably coupled to the spacer. The spacer is positioned between the tensioner and the tension mount. | 11-26-2015 |
20150328586 | METHOD AND SYSTEM FOR MITIGATING UREA DEPOSITS WITHIN AN SCR CATALYST SYSTEM - A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH | 11-19-2015 |
20150315996 | CAST DUAL WALL BULKHEAD WITH INTEGRAL OIL DRAIN - Systems and methods are provided for a cylinder block having one or more bulkheads. The bulkheads provide a dual-wall structure that may enhance the stiffness of the cylinder block in bending and torsion. The bulkheads may also provide an oil drain to allow oil to directly drain through a hollow core of the bulkhead. An overflow outlet may be formed in an inner wall of a bulkhead. In some implementations, a cylinder block with bulkheads may increase an oil capacity of an engine. | 11-05-2015 |
20150315952 | METHOD, SYSTEM, AND APPARATUS FOR DIAGNOSING AN EXHAUST AFTERTREATMENT COMPONENT - An apparatus includes an engine output module that determines an engine output power parameter for an engine. The apparatus includes an output power threshold module that determines if the engine output power parameter is below an output power threshold. The apparatus includes a NOx module that determines a nitrogen oxide (“NOx”) efficiency of a selective catalytic reduction (“SCR”) system in response to the output power threshold module determining that the determined engine output power parameter is below the output power threshold. The SCR system is in exhaust receiving communication with the engine. The apparatus includes a NO | 11-05-2015 |
20150300555 | Apparatus, System, and Method for Assembly of an Exhaust Aftertreatment Component - An exhaust aftertreatment assembly for treating exhaust gas. According to various embodiments, a first housing has a first end and a second housing has a second end, the second end being coupled to the first end. At least one alignment bracket is coupled to the first housing proximate the first end. An annular gasket is supported on the at least one alignment bracket between the first and second ends. The at least one alignment bracket may comprise a base having a curved surface conforming to the interior surface of the housing, the base having a length that is less than a circumference of the interior surface. A stop arm extends substantially transversely from the base. A support arm extends substantially transversely from the stop arm and substantially parallel to the base. An insulation receiving space is defined between the base, stop arm, and support arm. | 10-22-2015 |
20150300297 | EXHAUST SYSTEM FOR SPARK-IGNITED GASEOUS FUEL INTERNAL COMBUSTION ENGINE - An internal combustion engine system includes a spark-ignited internal combustion engine powered by a gaseous fuel. The engine system also includes an air intake in air providing communication with the internal combustion engine. Further, the engine system includes an exhaust system in exhaust gas receiving communication with the internal combustion engine. The exhaust system includes a methane oxidation catalyst through which at least a portion of the exhaust gas flows and an exhaust gas recirculation line in exhaust gas providing communication with the air intake. | 10-22-2015 |
20150128571 | EXHAUST GAS AFTERTREATMENT BYPASS SYSTEM AND METHODS - A method for protecting an exhaust aftertreatment system of an internal combustion engine from deterioration by selectively diverting exhaust gasses from the engine away from a component of the exhaust aftertreatment system includes assessing a status of an operating condition associated with a physical condition of the component of the internal combustion engine. The status of the operating condition is compared with a threshold value that corresponds with deterioration of the physical condition of the component. A valve upstream of the component is moved to a first position to open a bypass fluid path directing exhaust gasses around the component when the status of the operating condition meets the threshold value to reduce deterioration of the component. The valve is moved to a second position to close the bypass fluid path thereby directing exhaust gasses to the component when the status of the operating condition does not meet the threshold. | 05-14-2015 |
20150114337 | LUBRICANT LEVEL CONTROL FOR LUBRICATED SYSTEMS - Disclosed herein is a system includes a lubricated component and a lubricant pump that selectively provides lubricant to the lubricated component. The system also includes a lubricant source in lubricant providing communication with the lubricant pump. Additionally, the system includes a lubricant flow regulation device in lubricant receiving communication with the lubricated component and lubricant providing communication with the lubricant source. The lubricant flow regulation device is configured to drain lubricant from the lubricated component to the lubricant source based on when the lubricant pump provides lubricant to the lubricated component, and to prevent drainage of lubricant from the lubricated component to the lubricant source based on when the lubricant pump stops providing lubricant to the lubricated component. | 04-30-2015 |
20150114086 | TEMPERATURE COMPENSATION FOR PARTICULATE MATTER SENSOR REGENERATION - The present disclosure relates to a controller apparatus for regenerating a particulate matter sensor. The controller apparatus includes a sensing module configured to detect a soot loading on a particulate matter sensor and generate a regeneration request indicating a desired regeneration temperature and a heating module configured to receive the regeneration request and send a heating command signal to a heating element based on the regeneration request. The controller apparatus also includes an electrical resistance module configured to detect an electrical resistance in the heating element, a calibration module configured to determine an actual temperature of the heating element based on a resistance-to-temperature model, and a temperature feedback module configured to modify the heating command signal according to the difference between the desired regeneration temperature and the actual temperature. | 04-30-2015 |
20150113952 | PARTICULATE MATTER SENSOR REGENERATION - The present disclosure relates to a controller apparatus for regenerating a particulate matter sensor. The controller apparatus includes a sensing module configured to detect a soot loading on a particulate matter sensor and generate a regeneration request indicating a desired regeneration temperature and a heating module configured to receive the regeneration request and send a heating command signal to a heating element based on the regeneration request. The controller apparatus further includes an electrical resistance module configured to detect an electrical resistance in the heating element and determine an actual temperature of the heating element and a temperature feedback module configured to modify the heating command signal according to the difference between the desired regeneration temperature and the actual temperature. The present disclosure also includes a related method and system. | 04-30-2015 |
20150108831 | RESERVE POWER SYSTEM FOR INTERNAL COMBUSTION ENGINE - According to one embodiment, an electrical power management system for an internal combustion engine system with a power consumption device includes a battery and a supercapacitor. The battery is coupleable in electrical power providing communication with the power consumption device. The supercapacitor is coupleable in electrical power providing communication with the power consumption device. | 04-23-2015 |
20150059319 | Apparatus for Facilitating Reducant Decomposition and Mixing - According to one embodiment, an apparatus ( | 03-05-2015 |
20150034214 | APPARATUS, SYSTEM, AND METHOD FOR REINFORCING A BEND IN METALLIC MATERIAL - Described herein is an apparatus for reinforcing a metallic material includes a rotatable tool that is insertable into the metallic material. The rotatable tool is configured to plastically deform the metallic material. The apparatus also includes a coolant delivery mechanism that is coupled to the rotatable tool. The coolant delivery mechanism is configured to deliver a coolant to the metallic material. | 02-05-2015 |
20140331752 | EXHAUST AFTERTREATMENT SYSTEM DIAGNOSTIC AND CONDITIONING - An engine diagnostic tool includes a diagnostic engine calibration module structured to include a plurality of diagnostic processes for operating an internal combustion engine system of an immobilized vehicle. One or more of the plurality of diagnostic processes are structured to be an intrusive diagnostic process for the internal combustion engine system, wherein the intrusive diagnostic process causes the internal combustion engine system to operate outside of one or more calibration parameters. The diagnostic engine module is further structured to control the order and timing of each diagnostic process in the plurality of diagnostic processes. | 11-13-2014 |
20140331644 | EXHAUST AFTERTREATMENT COMPONENT CONDITION ESTIMATION AND REGENERATION - Described herein is an apparatus for an exhaust aftertreatment system includes a first aftertreatment component poison module that is configured to generate a first component poison regeneration request based on an estimated accumulation of a first poison on the first aftertreatment component. The accumulation of the first poison on the first aftertreatment component is based on an estimated amount of the first poison being released from the first aftertreatment component. The apparatus also includes a second aftertreatment component poison module that is configured to generate a second component poison regeneration request based on an estimated accumulation of the first poison on the second aftertreatment component. The accumulation of the first poison on the second aftertreatment component is based on the estimated amount of the first poison being released from the first aftertreatment component. | 11-13-2014 |
20140278017 | APPARATUS, SYSTEM, AND METHOD FOR REDUCING ENGINE KNOCK - A system and method for reducing engine knock associated with an internal combustion engine. An exhaust gas recirculation sub-system is fluidly connected to the internal combustion engine and includes a compressor and an exhaust gas storage tank fluidly connected to the compressor. In response to measuring that engine knock is occurring, compressed exhaust gas is injected from the exhaust gas storage tank into a combustion chamber of the internal combustion engine. | 09-18-2014 |
20140278011 | ADVANCED EXHAUST GAS RECIRCULATION FUELING CONTROL - For exhaust gas recirculation (EGR) fueling control, at least one donor cylinder of a plurality of cylinders in an engine provides exhaust gas to an air intake for the plurality of cylinders. A fuel variable restriction initially provides fuel concurrent with an intake stroke for the at least one donor cylinder in response to a transition from withholding the fuel to the plurality of cylinders. | 09-18-2014 |
20140261351 | Air-Fuel-Ratio Dithering Using a Dual Fuel Path Source - An apparatus for dithering fuel into an internal combustion engine includes a turbine that is powered by the internal combustion engine and a first fuel injector that injects a first fuel into an air stream to create a fuel/air stream. The apparatus also includes an air/fuel compressor that provides a compressed fuel/air stream to the internal combustion engine. The air/fuel compressor is powered by the turbine, and the air/fuel compressor compresses the fuel/air stream to create the compressed fuel/air stream. Additionally, the apparatus includes a second fuel injector that injects a second fuel into the compressed fuel/air stream prior to the compressed fuel/air stream entering the engine and after the compressed fuel/air stream exits the air/fuel compressor. | 09-18-2014 |
20140261342 | Apparatus, System, and Method for Reducing Emission of Nitrogen Oxides - An apparatus, system and method for reducing the emission of nitrogen oxides in an internal combustion engine system. Exhaust gas directly or indirectly downstream of the internal combustion engine is at least selectively stored in an exhaust gas storage region. Upon the occurrence of at least one enablement condition, indicative of a potential period where the emission of nitrogen oxides (NOx) will increase, the stored exhaust gas is inserted into the internal combustion engine to assist in reducing the emission of the nitrogen oxides. The exhaust gas storage volume regularly, or the exhaust gas storage volume may be filled during strategic periods when the emissions of nitrogen oxides are low and/or there is a low need for the recirculation of exhaust gas. | 09-18-2014 |
20140260726 | MULTI-PURPOSE ACTUATOR - An actuator assembly includes a housing that includes an input interface and an output interface. The assembly further includes a torque generating device coupled to an input shaft. The torque generating device is coupled to the input interface of the housing such that the input shaft is positioned within the housing. The assembly also includes a spur gear that is coupled to the input shaft and a face gear that is positioned within the housing. The face gear is in gear meshing engagement with the spur gear. Additionally, the assembly includes an output shaft that is coupled to the face gear and extends from the output interface. The output shaft is approximately perpendicular to the input shaft. | 09-18-2014 |
20140260216 | Apparatus, Method, and System for Diagnosing Reductant Delivery Performance - An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a controller that performs period diagnostics to determine whether there is a blockage in the reductant delivery system. The diagnostic procedure may include sampling first and second pressures at first and second operating conditions, respectively, and then comparing the first pressure differential between the first and second pressures with one or more threshold pressure differentials to determine whether system components such as a dosing line and an injector are at least partially blocked. If such a test is not conclusive, it may be repeated at a third and fourth operating conditions to provide a second pressure differential. The offset between the first and second pressure differentials may also be used to help diagnose where a blockage in the system resides. | 09-18-2014 |
20140260206 | APPARATUS, METHOD, AND SYSTEM FOR REDUCTANT FILTRATION - An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a reductant tank. A filter module positioned in the reductant tank filters reductant before it is conveyed to the reductant pump to remove impurities. In order to reduce gas flow to the pump, the filter module may have an outlet port leading to the reductant pump and a venting port positioned above the outlet port such that gas bubbles float to the venting port prior to entry of the reductant into the outlet port. The filter module may be secured to a tank level sensor assembly, and may vent the gas to a gas reservoir above the reductant in the reductant tank. Such a filtration system may operate independently of any return line that conveys reductant back to the reductant tank. | 09-18-2014 |
20140260203 | Gaseous Fuel Spark-Ignited Internal Combustion Engine System - A system and method for reforming a portion of an exhaust gas stream in an internal combustion engine system. An exhaust gas recirculation assembly divides the exhaust gas stream into a recycle stream and a vent stream. A mixer in fluid receiving communication with the recycle stream forms a combination stream by mixing a gaseous fuel stream with the recycle stream. A thermochemical recuperator component fluidly connects to the mixer and includes a first flow path and a second flow path. The first flow path has a catalyst through which the combination stream flows to create a reformate stream, and the second flow path has a heat transfer area for transferring heat from the vent stream to the combination stream. | 09-18-2014 |
20140250866 | Solid Ammonia Delivery System - Systems and methods for generating and controlling generation of ammonia. The ammonia generation control system includes a communication module and an ammonia generation module coupled to the communication module. The ammonia generation module is configured to cause generation of gaseous ammonia from a solid ammonia source in response to a determination that an ammonia storage quantity in an ammonia dosing storage cartridge meets a first pre-determined threshold and a determination that an engine condition of an internal combustion engine coupled to ammonia dosing storage cartridge meets a pre-determined engine condition threshold. | 09-11-2014 |
20140250865 | EXHAUST GAS AFTERTREATMENT BYPASS SYSTEM AND METHODS - A method for protecting an exhaust aftertreatment system of an internal combustion engine from deterioration by selectively diverting exhaust gasses from the engine away from a component of the exhaust aftertreatment system includes assessing a status of an operating condition associated with a physical condition of the component of the internal combustion engine. The status of the operating condition is compared with a threshold value that corresponds with deterioration of the physical condition of the component. A valve upstream of the component is moved to a first position to open a bypass fluid path directing exhaust gasses around the component when the status of the operating condition meets the threshold value to reduce deterioration of the component. The valve is moved to a second position to close the bypass fluid path thereby directing exhaust gasses to the component when the status of the operating condition does not meet the threshold. | 09-11-2014 |
20140245719 | APPARATUS, METHOD, AND SYSTEM FOR DIAGNOSING REDUCTANT DEPOSITS IN AN EXHAUST AFTERTREATMENT SYSTEM - An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system that delivers reductant to an exhaust stream in an exhaust aftertreatment system. A temperature sensor may be positioned in or near the flow of reductant and exhaust to measure the temperature of the reductant and exhaust. A change in temperature over time, such as an increase, decrease, or change in variation amplitude, may indicate the presence of a reductant deposit in the system. Detection of the deposit may initiate a regeneration cycle in which the operating characteristics of the system change to eliminate the reductant deposit to prevent it from hindering the performance of the exhaust aftertreatment system. | 09-04-2014 |
20140230771 | NUTATING BALANCER FOR INTERNAL COMBUSTION ENGINE - A nutating balance device for mitigating vibrations of an internal combustion engine having a crankshaft includes a coupler coupled to the engine crankshaft. The device also includes a weight coupled to the coupler. The coupler is configured to move the weight in sync with the crankshaft. The nutating balance device can generate variable torque pulsations or moments corresponding to torque harmonic frequencies of the internal combustion engine. | 08-21-2014 |
20140216388 | ENGINE CYLINDER MID-STOP - According to one embodiment, an internal combustion engine includes a cylinder and liner. The cylinder includes a mid-stop formed in a side wall of the cylinder. The mid-stop includes a first contact surface and an undercut between the first contact surface and the side wall. The liner is positioned within the cylinder and includes a seat having a second contact surface. The second contact surface is supported on the first contact surface. | 08-07-2014 |
20140214308 | APPARATUS, SYSTEM AND METHOD FOR INCREASING BRAKING POWER - Disclosed herein is an apparatus for increasing the braking power of a compression brake of an internal combustion engine having a variable geometry turbocharger. The apparatus includes an intake throttle module configured to close an air intake throttle in response to operation of the compression brake. Further, the apparatus includes a VGT module is configured to adjust a VGT component to decrease the swallowing capacity of the VGT in response to operation of the compression brake. | 07-31-2014 |
20140208721 | METHOD, SYSTEM, AND APPARATUS FOR DIAGNOSING AN EXHAUST AFTERTREATMENT COMPONENT - According to one embodiment, an apparatus is disclosed for diagnosing a condition of a component of an exhaust aftertreatment system in exhaust receiving communication with an internal combustion engine where the exhaust aftertreatment system includes a selective catalytic reduction (SCR) catalyst. The diagnostic module is configured to determine a normalized tailpipe nitrogen-oxide NO | 07-31-2014 |
20140202421 | ENGINE SPEED CONTROL - According to one embodiment, an apparatus for controlling operation of an internal combustion engine includes a conditions module that is configured to determine an out-of-gear condition of the internal combustion engine. The apparatus also includes a permission module that is configured to allow a speed of the internal combustion engine to exceed a maximum engine speed limit if the determined out-of-gear condition meets a threshold, and prevent the speed of the internal combustion engine from exceeding the maximum engine speed limit if the determined out-of-gear condition does not meet the threshold. | 07-24-2014 |
20140196551 | POWER TAKE-OFF SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A power take-off system for an internal combustion engine that has a drive gear positioned within a crankcase includes a housing. The housing is coupleable to the internal combustion engine. The system also includes an input gear with a drive gear engagement portion, a toothed portion, and a shaft extending between the drive gear engagement portion and the toothed portion. The input gear is coupled to the housing such that the driver gear engagement portion is positioned within the crank case and the toothed portion is positioned within the housing. The input gear also includes a vent conduit that extends through the shaft. The vent conduit includes a first end open to the housing and a second end open to the crankcase. | 07-17-2014 |
20140165560 | LOW PRESSURE EGR AMMONIA OXIDATION CATALYST - An internal combustion engine system includes an internal combustion engine generating an exhaust gas stream and an air intake system coupled to the internal combustion engine. The engine system also includes a turbocharger that includes a turbine in exhaust gas receiving communication with the exhaust gas stream and a compressor in air receiving communication with the air intake line. Further, the engine system includes an exhaust system in exhaust gas receiving communication with the internal combustion engine. The exhaust system has a main exhaust line and a low pressure (LP) exhaust gas recirculation (EGR) line through which at least a portion of the exhaust gas in the main exhaust line downstream of the turbine is flowable into the air intake system. The exhaust system further includes an ammonia oxidation catalyst positioned within the LP EGR line. | 06-19-2014 |
20140017794 | METHOD AND SYSTEM FOR MITIGATING UREA DEPOSITS WITHIN AN SCR CATALYST SYSTEM - A method and system for mitigating a urea deposit within an SCR system that includes determining a mass of an accumulated urea deposit present within the SCR catalyst and SCR piping, comparing the mass of the accumulated urea deposit with a deposit upper threshold limit, and initiating an SCR regeneration event when the mass of the accumulated urea deposit is greater than the deposit upper threshold limit. The method further includes determining an amount of NH | 01-16-2014 |
20130297176 | ENGINE OFF TIME TRACKING - An approach to tracking the engine off time of a system including an internal combustion engine. A timer apparatus may electrically couple to the engine control unit by way of a power connection that provides electrical power to the timer apparatus from the engine control unit. The timer apparatus may include a monitor module that monitors the power connection. A timer module may begin a time interval in response to the power connection transitioning from a powered state to an unpowered state. The timer module may end the time interval in response to the power connection transitioning from the unpowered state to the powered state. A communication module may communicate the time interval to the engine control unit by switching the power connection between the high state and the low state. | 11-07-2013 |
20130213013 | EXHAUST GAS SENSOR MODULE - Described herein is a sensor module for sensing characteristics of a fluid flowing through a fluid conduit. The sensor module includes a sample probe with at least one sample arm that extends radially inwardly from a sidewall portion of the fluid conduit to a center portion of the fluid conduit, defines a fluid flow channel, and includes a plurality of inlet apertures. The sample probe also includes a sensor well that is located at a radially outer end of the at least one sample arm. The sensor well defines an interior volume that is in fluid communication with the fluid flow channel, an upstream portion closed to an first portion of the fluid conduit upstream of sensor well, and a discharge aperture open to a second portion of the fluid conduit downstream of the sensor well. The sensor module also includes a sensor positioned in the interior volume. | 08-22-2013 |
20130206101 | SPARK PLUG FOR REMOVING RESIDUAL EXHAUST GAS AND ASSOCIATED COMBUSTION CHAMBER - A spark plug, and associated systems, for an internal combustion engine includes a central electrode that terminates at a first distal end surface defined about a central axis. The spark plug also includes at least one outer electrode that terminates at a second distal end surface. The at least one outer electrode at least partially laterally surrounds the central electrode such that the second distal end surface is radially offset relative to the central electrode and a lateral gap is defined between the central electrode and the at least one outer electrode. The spark plug include features that force or redirect movement of the flow of the fresh air-fuel mixture through the lateral gap to help to purge or move the residual exhaust gases left over from a previous combustion event out of the lateral gap. | 08-15-2013 |
20120180457 | EXHAUST GAS SENSOR MODULE - According to one embodiment, a sensor module includes a sensor probe that has at least two arms coupled together at a central location with each of the at least two arms extending radially outwardly away from the central location. Each of the at least two arms includes one of a plurality of openings and an elongate opening extending radially along the arm. The at least two arms define fluid flow channels therein. The sensor module also includes at least one extractor coupled to the probe. The at least one extractor includes a fluid flow channel that is communicable in fluid receiving communication with fluid flowing through the fluid flow channel of at least one of the at least two arms. Further, the sensor module includes at least one sensor that is communicable in fluid sensing communication with fluid flowing through the at least one extractor. | 07-19-2012 |
20120167555 | APPARATUS, SYSTEM, AND METHOD FOR ADAPTIVE ENGINE SYSTEM CONTROL WITH INTEGRATED GLOBAL POSITION SENSING - According to one embodiment, an apparatus includes an electronic controller ( | 07-05-2012 |
20110146240 | APPARATUS, SYSTEM, AND METHOD FOR MITIGATING DIESEL EXHAUST FLUID DEPOSITS AND ASSOCIATED CONDITIONS - According to one embodiment, described herein is an apparatus for mitigating on-board diagnostic (OBD) faults generated by an OBD system of an internal combustion engine (ICE) system having a selective catalytic reduction system with a diesel exhaust fluid (DEF) decomposition tube. The apparatus includes a fault mitigation module that is configured to monitor at least one OBD signal of the OBD system and issue a request for regenerating the DEF decomposition tube when a value of the at least one OBD signal reaches a predetermined regeneration threshold corresponding with the at least one OBD signal. The regeneration threshold is reachable prior to an OBD fault threshold corresponding with the at least one OBD signal. The apparatus also includes a regeneration module that is configured to regenerate the DEF decomposition tube according to the issued request. | 06-23-2011 |
20110143449 | APPARATUS, SYSTEM, AND METHOD FOR CATALYST PRESENCE DETECTION - A system to detect the presence of a catalyst includes an exhaust gas tube, a first temperature sensing device, a second temperature sensing device, a flow rate measurement device, and a processing device. The first temperature sensing device measures a first temperature of exhaust gas upstream of the exhaust gas tube. The second temperature sensing device measures a second temperature of the exhaust gas downstream of the exhaust gas tube. The processing device estimates an expected time delay between the measured inlet and outlet exhaust gas temperatures corresponding to a system with a catalyst present. The processing device may also determine the presence of a catalyst by comparing the measured second temperature to the measured first temperature and comparing the measured second temperature to an estimated delayed first temperature associated with the expected time delay. | 06-16-2011 |
20110099978 | REDUCTANT DECOMPOSITION SYSTEM - Described herein are various embodiments of a reductant decomposition system. According to one representative embodiment, the reductant decomposition system includes an exhaust gas chamber including an inlet and outlet. The system also includes a first exhaust gas distribution component positioned within the chamber and communicable in exhaust gas receiving communication with the outlet. The first exhaust gas distribution component causes swirling exhaust gas flow patterns within the exhaust gas chamber. Additionally, the system includes a second exhaust gas distribution component positioned within the chamber and communicable in exhaust gas providing communication with the inlet. The second exhaust gas distribution component includes features that cause a swirling exhaust gas flow pattern within a space defined by the second exhaust gas distribution component. Further, the system includes a reductant injector coupled to the exhaust gas chamber. The reductant injector is communicable in reductant injecting communication with exhaust gas within the chamber. | 05-05-2011 |
20110083621 | Apparatus, System, and Method for Reductant Line Heating Control - In one embodiment, an apparatus is disclosed for heating a reductant delivery line using coolant from an internal combustion engine where the reductant delivery line receives reductant from a reductant tank and a portion of a coolant line is positioned within the reductant tank. The apparatus includes a coolant temperature module that is configured to determine a reductant tank outlet coolant temperature target. Additionally, the apparatus includes a coolant flow rate module that is configured to generate a coolant valve flow rate command and transmit the command to a coolant valve. The coolant valve is controllable to regulate the flow rate of coolant through the coolant line. The coolant valve flow rate command is based on the reductant tank outlet coolant temperature target, a reductant tank inlet coolant temperature, and a reductant tank reductant temperature. | 04-14-2011 |
20110074150 | SPHERICAL FLANGE JOINT - According to one embodiment, a flange joint for joining a first pipe to a second pipe includes an adapter coupled to the first pipe. The adapter includes a convex surface. The flange joint also includes a gasket with a first concave surface and a second convex surface. The first concave surface of the gasket is matingly engageable with the convex surface of the adapter. The second convex surface is matingly engageable with the second pipe. The gasket is supported on the first pipe. The flange joint further includes a clamp that includes a concave surface that is matingly engageable with the second pipe to secure the gasket to the adapter. | 03-31-2011 |
20110058999 | LOW TEMPERATURE SELECTIVE CATALYTIC REDUCTION CATALYST AND ASSOCIATED SYSTEMS AND METHODS - According to one embodiment, described herein is an exhaust gas after-treatment system that is coupleable in exhaust gas stream receiving communication with an internal combustion engine. The exhaust gas after-treatment system includes a low temperature SCR catalyst configured to reduce NO | 03-10-2011 |
20110047973 | APPARATUS, SYSTEM, AND METHOD FOR CONTROLLING MULTIPLE DIESEL PARTICULATE FILTERS - According to one embodiment, an apparatus for controlling regeneration events on multiple diesel particulate filters (DPFs) of an exhaust after-treatment system includes a regeneration event synchronization module and regeneration event termination module. The regeneration event synchronization module is configured to simultaneously initiate a regeneration event on a first DPF and a regeneration event on a second DPF in response to a regeneration event request being triggered for one of the first and second DPFs. The regeneration event termination module is configured to terminate the regeneration event on the first DPF and the regeneration event on the second DPF. Under normal operating conditions, the termination of the regeneration event on the first DPF is performed independently of the termination of the regeneration event on the second DPF. | 03-03-2011 |
20110047966 | APPARATUS, SYSTEM, AND METHOD FOR DIESEL EXHAUST FLUID HEATING CONTROL - According to one embodiment, an apparatus for controlling the heating of diesel exhaust fluid (DEF) in a DEF delivery system includes a temperature comparison module that compares a difference between a sensed ambient air temperature and a sensed DEF tank temperature with a predetermined temperature difference threshold. Additionally, the apparatus includes a DEF heating status module that is configured to generate a DEF heating command according to (i) the sensed ambient air temperature if the difference between the sensed ambient air temperature and sensed DEF tank temperature is less than the predetermined temperature threshold; and (ii) the sensed DEF tank temperature if the difference between the sensed ambient air temperature and sensed DEF tank temperature is more than the predetermined temperature threshold. The apparatus also includes a DEF heating control module that is configured to control the heating of the DEF according to the DEF heating command. | 03-03-2011 |
20110016849 | APPARATUS, SYSTEM, AND METHOD FOR ESTIMATING DETERIORATION OF A NOx SENSOR RESPONSE RATE - In one embodiment, an apparatus for determining a deterioration of a NO | 01-27-2011 |
20100242440 | APPARATUS, SYSTEM, AND METHOD FOR ESTIMATING AN NOx CONVERSION EFFICIENCY OF A SELECTIVE CATALYTIC REDUCTION CATALYST - According to one exemplary embodiment, an apparatus is disclosed for estimating an NO | 09-30-2010 |
20100229531 | APPARATUS, SYSTEM, AND METHOD FOR CONTROLLING REDUCTANT DOSING IN AN SCR CATALYST SYSTEM - According to one representative embodiment, an apparatus for controlling reductant dosing in an SCR catalyst system having a reductant injection system configured to inject reductant into an exhaust gas stream includes a controller, an actual reductant dosing rate module, and a reductant doser compensation module. The controller is configured to determine a reductant dosing rate command representing a desired reductant dosing rate. The actual reductant dosing rate module is configured to determine a predicted actual reductant dosing rate based at least partially on the reductant dosing rate command. The reductant doser compensation module is configured to determine a modified reductant dosing rate command based at least partially on the predicted actual reductant dosing rate. The reductant injection system injects reductant into the exhaust gas stream at a rate corresponding to the modified reductant dosing rate command. | 09-16-2010 |
20090199825 | Apparatus, System, and Method for Efficiently Operating an Internal Combustion Engine Utilizing Exhaust Gas Recirculation - An apparatus, system, and method are disclosed for efficiently operating an engine utilizing exhaust gas recirculation (EGR). The apparatus includes an exhaust manifold receiving exhaust gas from a first cylinder set, an EGR manifold receiving exhaust gas from a second cylinder set, and a passage comprising a variable restriction. The passage fluidly couples the exhaust manifold to the EGR manifold. The apparatus further includes a controller with modules for interpreting engine operating conditions and controlling actuators in response to the engine operating conditions. | 08-13-2009 |