Patent application number | Description | Published |
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 |
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 |
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 |
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 |
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 |
20110258984 | START-STOP HYBRID EXOTHERMIC CATALYST HEATING SYSTEM - A catalyst heating system includes a first monitoring module, a mode selection module and an electrically heated catalyst (EHC) control module. The first monitoring module monitors at least one of (i) a first temperature of a first catalyst of a catalyst assembly in an exhaust system of an engine and (ii) an active catalyst volume of the catalyst assembly. The mode selection module is configured to select an EHC heating mode and at least one of a fuel enrichment mode and a secondary air injection mode based on the at least one of the first temperature and the active catalyst volume. The EHC control module controls current to one of the first catalyst and a second catalyst of the catalyst assembly based on the mode signal. | 10-27-2011 |
20110277449 | HYBRID CATALYST RADIANT PREHEATING SYSTEM - A catalyst heating system includes a monitoring module, a mode selection module and an electrically heated catalyst (EHC) control module. The monitoring module monitors at least one of (i) a first active volume of a catalyst assembly in an exhaust system of an engine and (ii) a first temperature of a non-EHC of the catalyst assembly. The mode selection module is configured to select a non-EHC radiant heating mode and generate a mode signal based on the at least one of the first active catalyst volume and the first temperature. An EHC control module increases temperature of the EHC to an elevated temperature that is greater than a stabilization temperature based on the mode signal. The stabilization temperature is greater than a catalyst light off temperature. | 11-17-2011 |
20110283675 | HYBRID CATALYST CONVECTIVE PREHEATING SYSTEM - A catalyst heating system includes a monitoring module, a mode selection module and an electrically heated catalyst (EHC) control module. The monitoring module monitors at least one of (i) a first temperature of a non-EHC of a catalyst assembly in an exhaust system of an engine and (ii) an active catalyst volume of the catalyst assembly. The mode selection module is configured to select an EHC heating mode and generate a mode signal based on the at least one of the first temperature and the active catalyst volume. The EHC control module controls current to an EHC of the catalyst assembly based on the mode signal. | 11-24-2011 |