Patent application number | Description | Published |
20130018569 | ELECTRIC CURRENT BASED ENGINE AUTO STOP INHIBIT ALGORITHM AND SYSTEM IMPLEMENTING SAMEAANM Sangameswaran; SangeethaAACI CantonAAST MIAACO USAAGP Sangameswaran; Sangeetha Canton MI USAANM Harpenau; Kevin RoyAACI Peachtree CityAAST GAAACO USAAGP Harpenau; Kevin Roy Peachtree City GA USAANM Pebley; KirkAACI NoviAAST MIAACO USAAGP Pebley; Kirk Novi MI USAANM Celinske; DavidAACI Wolverine LakeAAST MIAACO USAAGP Celinske; David Wolverine Lake MI USAANM Rademacher; Eric MichaelAACI Royal OakAAST MIAACO USAAGP Rademacher; Eric Michael Royal Oak MI US - A vehicle includes an engine and at least one controller. The at least one controller periodically determines an estimated current to be demanded by vehicle electrical loads during an auto stop of the engine, compares the estimated current with a threshold current, and inhibits an auto stop of the engine if the estimated current is greater than the threshold current for a predetermined period of time. | 01-17-2013 |
20130030670 | SYSTEM AND METHOD FOR CONTROLLING ALTERNATOR OR INTEGRATED STARTER GENERATOR OUTPUT VOLTAGE - An automotive vehicle includes an engine, an alternator or integrated starter generator, and at least one controller. The at least one controller reduces voltage output of the alternator or integrated starter generator prior to initiating an auto stop of the engine. | 01-31-2013 |
20130041556 | METHOD AND SYSTEM FOR ENABLING ELECTRICAL LOADS DURING AN ENGINE AUTO START - An automotive vehicle includes an engine, a plurality of electrical load subsystems, and at least one controller. During an auto start of the engine, the at least one controller detects a starter disengage condition. In response to detecting the starter disengage condition, the at least one controller periodically determines a value of an operating parameter associated with the vehicle, causes a first subset of the electrical load subsystems to be enabled when the value of the operating parameter falls with a first predefined range of values, and causes a second subset of the electrical load subsystems to be enabled when the value of the operating parameter falls within a second predefined range of values. | 02-14-2013 |
20130226440 | CONTROL OF VEHICLE ELECTRICAL LOADS DURING ENGINE AUTO STOP EVENT - A vehicle includes an engine, an electrical load and a stop/start system. The stop/start system selectively auto stops the engine when a speed of the vehicle is approximately zero, and in response to a request to activate the electrical load while the engine is auto stopped, auto starts the engine prior to activating the electrical load. | 08-29-2013 |
20140095056 | Powertrain Delta Current Estimation Method - A vehicle includes an engine, electrical loads, and at least one controller. While the engine is on, the controller calculates the change in current demand of the electrical loads expected from turning the engine off. The decision to command the engine off is then based on the expected change in current demand. Electrical loads that will change state from on to off when the engine is turned off will increase the expected change in current demand. Electrical loads that will change state from off to on when the engine is turned off will decrease the expected change in current demand. Operating conditions associated with the electrical loads, such as operating voltage, temperature, and speed, may affect the expected change in current demand. | 04-03-2014 |
20140214309 | METHOD FOR MAXIMIZING MICROHYBRID AUTO START-STOP AVAILABILITY - A method for maximizing the availability of start-stop operations within a microhybrid vehicle includes determining the electric current drawn by a set of electrical components of the vehicle, from the vehicle's battery. The internal resistance of the vehicle's battery, and the resistance of a starter motor loop circuit coupled to the engine of the vehicle are dynamically calculated. The closed-circuit voltage of the battery is predicted, using the internal resistance of the battery, the resistance of the starter motor loop circuit, and the current drawn by the set of electrical components of the vehicle. The start-stop operation is carried out if the closed-circuit voltage of the battery is predicted to be above a pre-determined minimum value. | 07-31-2014 |
20150158480 | SYSTEM AND METHOD FOR CONTROLLING A STOP/START SYSTEM FOR A VEHICLE ENGINE - A system and method for controlling a stop/start system for an engine in a vehicle include auto starting the engine in response to a transmission gear lever being shifted out of DRIVE when the engine has been auto stopped while the gear lever is in DRIVE. The auto starting is further in response to the gear lever being shifted into another gear and a vehicle brake being released within a predetermined time interval after the gear lever is moved into the other gear. | 06-11-2015 |
20150210265 | REAR DEFROST CONTROL IN STOP/START VEHICLE - A method for controlling a stop/start vehicle includes commanding an engine auto start in response to a calibratable time interval elapsing after receiving an electric defroster activation request when the engine is auto stopped. The method may further include activating a defroster after the engine has been auto started. The method may additionally include activating a defroster indicator when the electric defroster activation is received. The method may further include inhibiting an engine auto stop in response to an electric defroster activation request when the engine is running and further in response to a battery charge being insufficient to support a predicted current draw, and signaling an alert to a vehicle driver. | 07-30-2015 |