| Patent application number | Description | Published |
|---|
| 20080223019 | SCR COLD START HEATING SYSTEM FOR A DIESEL EXHAUST - An exhaust system includes a heating element that is disposed downstream from an engine and that introduces thermal energy into an exhaust of the engine. A selective catalyst reduction (SCR) unit is disposed downstream from the heating element and filters nitrogen oxides (NOx) within the exhaust. A control module is in communication with and energizes the heating element based on temperature of the SCR unit. | 09-18-2008 |
| 20080230038 | VAPOR ASSISTED COLD START ARCHITECTURE UTILIZING TANK GRADE VENT VALVES - A vapor fuel recovery system for fuel tanks is provided. The vapor recovery system comprises: a canister that captures vapor fuel expelled from the fuel tank; a vent valve that controls ventilation of vapor fuel from the fuel tank to the canister; and a vent bypass disposed between the canister and the vent valve that controls the flow of vapor fuel from the fuel tank to the on-board recovery canister when a fuel level in the fuel tank is full. The bypass includes a bypass valve and at least one orifice. | 09-25-2008 |
| 20080282671 | Electrically heated particulate filter propagation support methods and systems - A control system that controls regeneration of a particulate filter is provided. The system generally includes a regeneration module that controls current to the particulate filter to initiate combustion of particulate matter in the particulate filter. A propagation module estimates a propagation status of the combustion of the particulate matter based on a combustion temperature. A temperature adjustment module controls the combustion temperature by selectively increasing a temperature of exhaust that passes through the particulate filter. | 11-20-2008 |
| 20080282673 | Hybrid cold start strategy using electrically heated catalyst - A method of operating an engine control system includes generating an engine start signal, determining whether a cold start condition exists, energizing an electrically heated catalyst based on the cold start condition, determining the temperature of the electrically heated catalyst and selectively starting an engine based on the engine start signal and the electrically heated catalyst temperature. | 11-20-2008 |
| 20080282674 | Electrically heated particulate filter regeneration methods and systems for hybrid vehicles - A control system for controlling regeneration of a particulate filter for a hybrid vehicle is provided. The system generally includes a regeneration module that controls current to the particulate filter to initiate regeneration. An engine control module controls operation of an engine of the hybrid vehicle based on the control of the current to the particulate filter. | 11-20-2008 |
| 20080282677 | Electially heated particulate filter preparation methods and systems - A control system that controls regeneration of a particulate filter is provided. The system generally includes a fuel control module that controls injection of fuel into exhaust that passes through the particulate filter. A regeneration module controls current to the particulate filter to initiate regeneration after the fuel has been injected into the exhaust. | 11-20-2008 |
| 20080282678 | Electrically heated particulate filter restart strategy - A control system that controls regeneration of a particulate filter is provided. The system generally includes a propagation module that estimates a propagation status of combustion of particulate matter in the particulate filter. A regeneration module controls current to the particulate filter to re-initiate regeneration based on the propagation status. | 11-20-2008 |
| 20080282686 | Hybrid HC absorber/EHC PZEV exhaust architecture - A system may include a hydrocarbon (HC) absorber positioned in an exhaust flow path and an electrically heated catalyst (EHC) positioned in the exhaust flow path downstream of the HC absorber. | 11-20-2008 |
| 20080295482 | Electrically heated DPF/SCR 2-way system - An exhaust system may include a canister that is disposed downstream from an engine. A particulate filter (PF) is disposed within the canister and filters particulates within an exhaust from the engine. A reducing catalyst is disposed within the canister, is on the PF, and promotes reaction of a liquid reductant in the exhaust after reception by the PF. A heating element is disposed within the canister and heats particulate matter in the PF. | 12-04-2008 |
| 20080302086 | Electrically heated particulate filter diagnostic systems and methods - A system that diagnoses regeneration of an electrically heated particulate filter is provided. The system generally includes a grid module that diagnoses a fault of the grid based on at least one of a current signal and a voltage signal. A diagnostic module at least one of sets a fault status and generates a warning signal based on the fault of the grid. | 12-11-2008 |
| 20080307774 | SELECTIVE CATALYST REDUCTION LIGHT-OFF STRATEGY - An emissions control system comprises a temperature determination module and an emissions control module. The temperature determination module determines a first temperature of a heater element of a diesel particulate filter (DPF) assembly in an exhaust system and determines a second temperature of a catalyst of the DPF assembly. The emissions control module selectively activates the heater element, selectively initiates a predefined combustion process in an engine based upon the first temperature, and selectively starts a reductant injection process based upon the second temperature. | 12-18-2008 |
| 20080307775 | ELECTRICALLY HEATED PARTICULATE FILTER EMBEDDED HEATER DESIGN - An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine and wherein an upstream surface of the particulate filter includes machined grooves. A grid of electrically resistive material is inserted into the machined grooves of the exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. | 12-18-2008 |
| 20080307776 | ELECTRICALLY HEATED PARTICULATE FILTER REGENERATION USING HYDROCARBON ADSORBENTS - An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material selectively heats exhaust passing through the upstream end to initiate combustion of particulates within the PF. A hydrocarbon adsorbent coating applied to the PF releases hydrocarbons into the exhaust to increase a temperature of the combustion of the particulates within the PF. | 12-18-2008 |
| 20080307781 | ELECTRICALLY HEATED PARTICULATE FILTER USING CATALYST STRIPING - An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating is applied to the PF that increases a temperature of the combustion of the particulates within the PF. | 12-18-2008 |
| 20090000284 | Ash reduction system using electrically heated particulate matter filter - A control system for reducing ash comprises a temperature estimator module that estimates a temperature of an electrically heated particulate matter (PM) filter. A temperature and position estimator module estimates a position and temperature of an oxidation wave within the electrically heated PM filter. An ash reduction control module adjusts at least one of exhaust flow, fuel and oxygen levels in the electrically heated PM filter to adjust a position of the oxidation wave within the electrically heated PM filter based on the oxidation wave temperature and position. | 01-01-2009 |
| 20090038295 | Electrically heated DPF start-up strategy - An exhaust system that processes exhaust generated by an engine has a diesel particulate filter (DPF) that is disposed downstream of the engine and that filters particulates in the exhaust. An electrical heater is disposed upstream of the DPF and selectively heats the exhaust to initiate combustion of the particulates. Heat generated by combustion of particulates in the heater induces combustion of particulates within the DPF. A control module selectively enables current flow to the electrical heater for an initial period of a DPF regeneration cycle, and limits exhaust flow while the electrical heater is heating to a predetermined soot combustion temperature. | 02-12-2009 |
| 20090071110 | MICROWAVE MODE SHIFTING ANTENNA SYSTEM FOR REGENERATING PARTICULATE FILTERS - A regeneration system comprises a particulate matter (PM) filter including a microwave energy absorbing surface, and an antenna system comprising N antennas and an antenna driver module that sequentially drives the antenna system in a plurality of transverse modes of the antenna system to heat selected portions of the microwave absorbing surface to regenerate the PM filter, where N is an integer greater than one. The transverse modes may include transverse electric (TE) and/or transverse magnetic (TM) modes. | 03-19-2009 |
| 20090071124 | ELEVATED EXHAUST TEMPERATURE, ZONED, ELECTRICALLY-HEATED PARTICULATE MATTER FILTER - A system comprises an electrical heater and a particulate matter (PM) filter that is arranged one of adjacent to and in contact with the electrical heater. A control module selectively increases an exhaust gas temperature of an engine to a first temperature and that initiates regeneration of the PM filter using the electrical heater while the exhaust gas temperature is above the first temperature. The first temperature is greater than a maximum exhaust gas temperature at the PM filter during non-regeneration operation and is less than an oxidation temperature of the PM. | 03-19-2009 |
| 20090071126 | HIGH EXHAUST TEMPERATURE, ZONED, ELECTRICALLY-HEATED PARTICULATE MATTER FILTER - A system comprises a particulate matter (PM) filter including an upstream end for receiving exhaust gas and a downstream end. A zoned electric heater is arranged one of spaced from and in contact with the upstream end. A control module increases an exhaust temperature above a soot oxidation temperature before activating said electric heater to regenerate downstream portions of the PM filter. | 03-19-2009 |
| 20090071127 | FACE CRACK REDUCTION STRATEGY FOR PARTICULATE FILTERS - A system comprises a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and at least one portion. A control module initiates combustion of PM in the PM filter using a heater and selectively adjusts oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter. A method comprises providing a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and at least one portion; initiating combustion of PM in the PM filter using a heater; selectively adjusting oxygen levels of the exhaust gas to adjust a temperature of combustion adjacent to the at least one portion of the PM filter. | 03-19-2009 |
| 20090071128 | LOW EXHAUST TEMPERATURE ELECTRICALLY HEATED PARTICULATE MATTER FILTER SYSTEM - A system includes a particulate matter (PM) filter, a sensor, a heating element, and a control module. The PM filter includes with an upstream end that receives exhaust gas, a downstream end and multiple zones. The sensor detects a temperature of the exhaust gas. The control module controls current to the heating element to convection heat one of the zones and initiate a regeneration process. The control module selectively increases current to the heating element relative to a reference regeneration current level when the temperature is less than a predetermined temperature. | 03-19-2009 |
| 20090071129 | ELECTRICALLY HEATED PARTICULATE MATTER FILTER SOOT CONTROL SYSTEM - A regeneration system includes a particulate matter (PM) filter with an upstream end for receiving exhaust gas and a downstream end. A control module determines a current soot loading level of the PM filter and compares the current soot loading level to a predetermined soot loading level. The control module permits regeneration of the PM filter when the current soot loading level is less than the predetermined soot loading level. | 03-19-2009 |
| 20090071338 | OVERLAP ZONED ELECTRICALLY HEATED PARTICULATE FILTER - A system includes a particulate matter (PM) filter that includes an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than or equal to one, and wherein the N zones and the M sub-zones are arranged in P layers, where P is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones. | 03-19-2009 |
| 20090074630 | INDUCTIVELY HEATED PARTICULATE MATTER FILTER REGENERATION CONTROL SYSTEM - A system includes a particulate matter (PM) filter with an upstream end for receiving exhaust gas, a downstream end and zones. The system also includes a heating element. A control module selectively activates the heating element to inductively heat one of the zones. | 03-19-2009 |
| 20090113883 | VARIABLE POWER DISTRIBUTION FOR ZONED REGENERATION OF AN ELECTRICALLY HEATED PARTICULATE FILTER - A system includes a particulate matter (PM) filter with multiple zones, an electric heater and a control module. The electrical heater includes heater segments, which each correspond with a respective one of the zones. The electrical heater is arranged upstream from and is proximate with the PM filter. The control module selectively applies a first energy level to a first one of the zones via a first one of the heater segments to initiate regeneration in the first zone. The control module also selectively applies a second energy level that is less than the first energy level to a second one of the zones via a second one of the heater segments to initiate regeneration in the second zone. | 05-07-2009 |
| 20090183501 | DIESEL PARTICULATE FILTER WITH ZONED RESISTIVE HEATER - A diesel particulate filter assembly comprises a diesel particulate filter (DPF) and a heater assembly. The DPF filters a particulate from exhaust produced by an engine. The heater assembly has a first metallic layer that is applied to the DPF, a resistive layer that is applied to the first metallic layer, and a second metallic layer that is applied to the resistive layer. The second metallic layer is etched to form a plurality of zones. | 07-23-2009 |
| 20090217818 | WIRELESS ZONED PARTICULATE MATTER FILTER REGENERATION CONTROL SYSTEM - An assembly includes a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas, a downstream end and multiple zones. An absorbing layer absorbs microwave energy in one of N frequency ranges and is arranged with the upstream end. N is an integer. A frequency selective filter has M frequency selective segments and receives microwave energy in the N frequency ranges. M is an integer. One of the M frequency selective segments permits passage of the microwave energy in one of the N frequency ranges and does not permit passage of microwave energy in the other of the N frequency ranges. | 09-03-2009 |
| 20090293450 | COLD-START CONTROL SYSTEMS FOR INTERNAL COMBUSTION ENGINES - A cold-start control system includes an air pump control module that controls an air pump and an engine starting module that starts an engine. The air pump control module activates the air pump to supply oxygen to a catalytic converter based on a temperature of the catalytic converter. The engine starting module starts the engine based on the temperature of the catalytic converter. | 12-03-2009 |
| 20100095652 | EMISSION REDUCTION SYSTEM FOR TURBO CHARGED ENGINE - An emissions reduction system includes an emissions control module that selectively controls fuel injection at a lean A/F ratio based on a first temperature of a catalytic converter and that selectively turns on an electrically heated catalyst (EHC) based on the first temperature. A fuel injection module selectively injects fuel into an engine cylinder during an expansion stroke based on a second temperature of the EHC. | 04-22-2010 |
| 20100095655 | ZONED ELECTRICAL HEATER ARRANGED IN SPACED RELATIONSHIP FROM PARTICULATE FILTER - A system comprises a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones. | 04-22-2010 |
| 20100095657 | ELECTRICALLY HEATED DIESEL PARTICULATE FILTER (DPF) - A diesel particulate filter assembly includes a diesel particulate filter (DPF) and an electric heater that is integrally formed at an upstream end of the DPF. The electric heater includes a heating substrate and a resistive heating element. The heating substrate includes a central region and a boundary region around the central region. The resistive heating element includes a plurality of conductive portions. Adjacent ones of the conductive portions in the central region form a first spacing. Adjacent ones of the conductive portions in the boundary region form a second spacing. The second spacing is smaller than the first spacing. | 04-22-2010 |
| 20100115921 | CATALYTIC COMBUSTOR STRATEGY USING HC ADSORBER - A vehicle system includes a hydrocarbon adsorber, a catalyst, a control module, and a heater. The hydrocarbon adsorber receives first exhaust gases, adsorbs hydrocarbons from the first exhaust gases, and outputs second exhaust gases. The catalyst receives the second exhaust gases. The control module controls a heater and fuel injectors. The heater heats a portion of the catalyst to a predetermined temperature. The control module controls the fuel injectors to generate a fuel-rich air/fuel mixture when the portion of the catalyst is heated to the predetermined temperature. | 05-13-2010 |
| 20100180577 | APPARATUS AND METHOD FOR ONBOARD PERFORMANCE MONITORING OF EXHAUST GAS PARTICULATE FILTER - The present invention is directed to a gas particulate treatment system and may include a gas filter and a gas filter performance monitor downstream of the gas filter. The gas filter performance monitor includes a particulate trap operable to collect particulates passing through the gas filter, and a sensing apparatus associated with the gas filter performance monitor that operates to sense particulate collection in the gas filter performance monitor. | 07-22-2010 |
| 20100186384 | INTEGRATED EXHAUST AND ELECTRICALLY HEATED PARTICULATE FILTER REGENERATION SYSTEMS - A system includes a particulate matter (PM) filter that includes multiple zones. An electrical heater includes heater segments that are associated with respective ones of the zones. The electrical heater is arranged upstream from and proximate with the PM filter. A post-fuel injection system injects fuel into at least one of a cylinder of an engine and an exhaust system. A control module is configured to operate in a first mode that includes activating the electrical heater to heat exhaust of the engine. The control module is also configured to operate in a second mode that includes activating the post-injection system to heat the exhaust. The control module selectively operates in at least one of the first mode and the second mode. | 07-29-2010 |
| 20100186385 | ELECTRICALLY HEATED PARTICULATE FILTER WITH ZONED EXHAUST FLOW CONTROL - A system includes a particulate matter (PM) filter that includes X zones. An electrical heater includes Y heater segments that are associated with respective ones of the X zones. The electrical heater is arranged upstream from and proximate with the PM filter. A valve assembly includes Z sections that are associated with respective ones of the X zones. A control module adjusts flow through each of the Z sections during regeneration of the PM filter via control of the valve assembly. X, Y and Z are integers. | 07-29-2010 |
| 20100192549 | METHOD AND SYSTEM FOR CONTROLLING AN ELECTRICALLY HEATED PARTICULATE FILTER - A method and system for controlling a diesel particulate filter includes a particulate matter load determination module determining a particulate matter load in a diesel particulate filter (DPF), a desired oxygen level determination module determining a desired exhaust gas oxygen level based on the particulate matter load, an oxygen comparison module comparing the desired exhaust gas oxygen level and a measured exhaust gas oxygen level and generating a comparison signal and an electric DPF control module controlling an electrically heated catalyst in response to the comparison signal. | 08-05-2010 |
| 20100205943 | ELECTRICALLY HEATED PARTICULATE FILTER ZONE-BASED POST FUEL INJECTION SYSTEM - A system includes a particulate matter (PM) filter with multiple zones. An electrical heater includes heater segments that are associated with respective ones of the zones. The electrical heater is arranged upstream from and proximate with the PM filter. A post fuel injection system injects fuel into at least one of a cylinder of an engine and an exhaust system. A control module selects one of the zones, adjusts post fuel injection based on the selected one of the zones, and electrically heats the one of the zones via a respective one of the heater segments. | 08-19-2010 |
| 20100212981 | SYSTEM AND METHOD FOR CONTROLLING AN ELECTRICALLY HEATED CATALYST FOR A HYBRID VEHICLE - A system and control module for controlling an electrically heated catalyst includes a remote start module generating a remote start signal, a catalyst control module controlling the electrically heated catalyst based on the remote start signal and an engine control module starting the engine after preheating and/or when required by the vehicle to honor a request as defined in this document. | 08-26-2010 |
| 20100276223 | HYBRID VEHICLE EXHAUST CONTROL STRATEGY - A hybrid vehicle emission control method may include operating the hybrid vehicle in a first mode during which a combustion engine is off and an electric motor propels the hybrid vehicle. An electrically heated selective catalytic reduction catalyst (EHSCR) may be energized during the first mode. The vehicle may be operated in a second mode after the first mode during which the engine propels the hybrid vehicle. | 11-04-2010 |
| 20100287912 | PREDICTING ASH LOADING USING AN ELECTRICALLY HEATED PARTICULATE FILTER - A control system includes a heater control module, a measured duration module, and a regeneration volume module. The heater control module selectively initiates a regeneration in a zone of a particulate filter in an exhaust system. The measured duration module measures a duration of the regeneration. The regeneration volume module determines an available volume within the particulate filter to regenerate particulate based on the measured duration of the regeneration. | 11-18-2010 |
| 20100300075 | ELECTICALLY HEATED PARTICULATE FILTER INCOMPLETE REGENERATION IDENTIFICATION SYSTEM AND METHOD - A system comprises a regeneration module and a diagnostic module. The regeneration module controls an electric heater to heat exhaust gas produced by an engine. The regeneration module determines when a regeneration cycle of a particulate matter (PM) filter begins by comparing a temperature of the exhaust gas input to the PM filter and a first temperature threshold. The diagnostic module determines a regeneration status by comparing a temperature of the exhaust gas output by the PM filter and a second temperature threshold during a predetermined period after the regeneration cycle begins. | 12-02-2010 |
| 20100305830 | CONTROL SYSTEMS AND METHODS FOR FUEL AND SECONDARY AIR INJECTION - An engine control system comprises an actuator control module and a tertiary injection module. The actuator control module provides secondary air to an exhaust system when a catalyst light-off mode is enabled and provides first and second injections of fuel to a cylinder during each engine cycle while the catalyst light-off mode is enabled. The tertiary injection module selectively provides a third injection of fuel to the cylinder during an exhaust phase of each engine cycle while the catalyst light-off mode is enabled. The first, second, and third injections are each separated by a period of time. | 12-02-2010 |
| 20100313547 | APPARATUS AND METHOD FOR REGENERATING AN EXHAUST FILTER - An exhaust gas particulate filter system for an internal combustion engine comprises an exhaust gas conduit in fluid communication with, and configured to receive exhaust gas from, the internal combustion engine. A hydrocarbon supply is connected to the exhaust gas conduit and is in fluid communication with the exhaust gas for delivery of hydrocarbon thereto. A particulate filter assembly is located downstream of the hydrocarbon injector for receipt of the exhaust gas and hydrocarbon mixture. The particulate filter assembly comprises an exhaust gas filter disposed therein for removal of particulates from the exhaust gas and an electrically heated catalyst device disposed therein, upstream of the exhaust gas filter, and heatable to induce oxidation of the exhaust gas and hydrocarbon mixture and to heat the exhaust gas filter and burn particulates collected therein. | 12-16-2010 |
| 20100318281 | FUEL CONTROL STRATEGY FOR HEATING A CATALYST - A control system for an engine having N cylinders in first and second banks includes a catalyst heat module and a fuel control module. N is an integer greater than two. The catalyst heat module selectively operates the engine in a catalyst heat mode to heat a catalyst. The fuel control module, throughout a fuel injection sequence for each of the N cylinders, adjusts a first air/fuel (A/F) ratio for the first bank to a rich value and adjusts a second A/F ratio for the second bank to a lean value. | 12-16-2010 |
| 20100319315 | DETECTING PARTICULATE MATTER LOAD DENSITY WITHIN A PARTICULATE FILTER - A control system includes a heater control module and a particulate matter (PM) load module. The heater control module selectively activates an electric heater to initiate regeneration in a zone of a particulate filter and deactivates the electric heater after the regeneration is initiated. The regeneration continues along a length of the particulate filter after the electric heater is deactivated. The PM load module determines a PM load based on an outlet temperature of the particulate filter after the regeneration is initiated. | 12-23-2010 |
| 20100326403 | ELECTRICALLY HEATED PARTICULATE FILTER REGENERATION DURING ENGINE START/STOP OPERATION - A control system comprises a combustion control module and a regeneration control module. The combustion control module controls operation of a vehicle in a first mode during which a combustion engine is off and in a second mode during which the combustion engine is on. The regeneration control module is in communication with the combustion control module and activates an electric heater during the first mode to heat an inlet of a particulate matter (PM) filter. Exhaust gas produced by the combustion engine enters the inlet and initiates a regeneration cycle of the PM filter in the second mode. | 12-30-2010 |
| 20110000194 | SELECTIVE CATALYTIC REDUCTION SYSTEM USING ELECTRICALLY HEATED CATALYST - An exhaust system includes N heating elements and a particulate matter (PM) filter. The N heating elements heat N portions of an exhaust gas. At least one of the N heating elements is coated with a first selective catalytic reduction (SCR) catalyst. The PM filter has an inlet that receives the N portions of the exhaust gas heated by the N heating elements. Each of the N portions of the exhaust gas heats a corresponding region of the inlet. N is an integer greater than 1. | 01-06-2011 |
| 20110000195 | REDUCED VOLUME ELECTRICALLY HEATED PARTICULATE FILTER - A control system comprises an exhaust treatment system, an electric heating module, and an exhaust heating module. The exhaust treatment system comprises a particulate matter (PM) filter and an electric heater. The PM filter includes M zones that receive exhaust gas of an engine and filter PM from the exhaust gas. The electric heater heats exhaust gas input to N of the M zones, wherein M is an integer greater than one and N is an integer less than M. The electric heating module activates the electric heater to heat exhaust gas input to the N zones to regenerate the N zones. The exhaust heating module heats exhaust gas input to the M zones by controlling an air-fuel ratio of the exhaust gas after the N zones regenerate. | 01-06-2011 |
| 20110004391 | ELECTRICALLY HEATED PARTICULATE FILTER - A control system comprises a particulate matter (PM) filter, an electric heater, a first heating module, and a second heating module. The PM filter includes M zones that filter PM from exhaust gas. The electric heater includes M segments corresponding to the M zones that heat exhaust gas input to selected ones of the M zones when activated. The first heating module activates N of the M segments to heat exhaust gas input to N of the M zones to regenerate the N zones. The second heating module operates in one of a first mode and a second mode to regenerate other ones of the M zones after the N zones are regenerated. The first mode includes adjusting an air-fuel ratio of the exhaust gas. The second mode includes activating other ones of the M segments to heat exhaust gas input to other ones of the M zones. | 01-06-2011 |
| 20110030344 | RADIANT HEATING SYSTEMS AND METHODS FOR CATALYSTS OF EXHAUST TREATMENT SYSTEMS - An exhaust treatment system comprises M three-way catalysts and N electrically heated catalysts (EHCs). The M three-way catalysts are arranged to receive exhaust gas output by an engine of a hybrid vehicle. M is an integer greater than one. The N EHCs are arranged to receive the exhaust gas and provide radiant heat to the M three-way catalysts when the N EHCs are powered. N is an integer greater than one. | 02-10-2011 |
| 20110030554 | ELECTRIC HEATER AND CONTROL SYSTEM AND METHOD FOR ELECTRICALLY HEATED PARTICULATE FILTERS - An exhaust treatment system comprises a particulate matter filter, a first heater element, and a second heater element. The particulate matter (PM) filter filters PM from exhaust gas and includes N zones. Each of the N zones includes an inlet area that receives a portion of the exhaust gas. N is an integer greater than one. The first heater element includes a contact area that heats exhaust gas input to an inlet area of a first one of the N zones. The second heater element includes a second contact area that heats exhaust gas input to an inlet area of a second one of the N zones. A ratio of the contact area of the first heater element to the inlet area of the first zone is greater than a ratio of the contact area of the second heater element to the inlet area of the second zone. | 02-10-2011 |
| 20110047980 | ENGINE CONTROL SYSTEMS AND METHODS FOR MINIMIZING FUEL CONSUMPTION - An engine control system comprises a temperature control module and an engine disabling module. The temperature control module regulates a first temperature of an electrically heated catalyst (EHC) based on a first predetermined light-off temperature while an engine is shut down. The engine disabling module selectively disables start up of the engine when a second temperature of a passive catalyst is less than a second predetermined light-off temperature while a maximum torque output of an electric motor is greater than a desired torque output. | 03-03-2011 |
| 20110047981 | CATALYST TEMPERATURE CONTROL SYSTEMS AND METHODS FOR HYBRID VEHICLES - A catalyst temperature control system of the present disclosure includes a vehicle start anticipation module and an electrically heated catalyst (EHC) control module. The vehicle start anticipation module determines whether a vehicle start is anticipated based on at least one of a plurality of vehicle conditions before an ignition switch is turned on. The EHC control module activates an EHC based on the determination. | 03-03-2011 |
| 20110067386 | Oxidizing Particulate Filter - A particulate filter assembly for application to an exhaust system of an internal combustion engine comprises an exhaust gas particulate filter configured to receive and filter exhaust gas from an exhaust system. An oxidation catalyst compound is disposed on an outer radial region of the exhaust gas particulate filter and is configured to induce oxidation of carbon monoxide from the combustion of carbon and particulates, to thereby maintain temperatures in the radially outer portion at a level sufficient to maintain the combustion of carbon and particulates therein. | 03-24-2011 |
| 20110078999 | STATE OF CHARGE CATALYST HEATING STRATEGY - A control system includes a state of charge module and a control module. The state of charge module receives a parameter associated with a battery in a vehicle and determines a state of charge of the battery based on the parameter. The control module activates a heater in a catalytic converter in an exhaust system of the vehicle based on the state of charge. | 04-07-2011 |
