Patent application number | Description | Published |
20140356188 | TURBINE BLADE AIRFOILS INCLUDING FILM COOLING SYSTEMS, AND METHODS FOR FORMING AN IMPROVED FILM COOLED AIRFOIL OF A TURBINE BLADE - Turbine blade airfoils, film cooling systems thereof, and methods for forming improved film cooled components are provided. The turbine blade airfoil has an external wall surface and comprises leading and trailing edges, pressure and suction sidewalls both extending between the leading and the trailing edges, an internal cavity, one or more isolation trenches in the external wall surface, a plurality of film cooling holes arranged in cooling rows, and a plurality of span-wise surface connectors interconnecting the outlets of the film cooling holes in the same cooling row to form a plurality of rows of interconnected film cooling holes. Each film cooling hole has an inlet connected to the internal cavity and an outlet opening onto the external wall surface. The span-wise surface connectors in at least one selected row of interconnected film cooling holes are disposed in the one or more isolation trenches. | 12-04-2014 |
20150078916 | TURBINE BLADES WITH TIP PORTIONS HAVING CONVERGING COOLING HOLES - A turbine rotor blade is provided with for a turbine section of an engine that includes a shroud surrounding the rotor blade. The rotor blade includes a platform and an airfoil extending from the platform into a mainstream gas path. The airfoil includes a pressure side wall, a suction side wall joined to the pressure side wall at a leading edge and a trailing edge, a tip cap extending between the suction side wall and the pressure side wall, a first squealer tip extension extending from the pressure side wall at a first angle relative to the pressure side wall, the first squealer tip extension defining a first cooling hole that converges between an inlet and an outlet; an internal cooling circuit configured to deliver cooling air to a gap between the pressure side squealer tip extension and the shroud via the first cooling hole. | 03-19-2015 |
20150354461 | ENGINE SYSTEMS AND METHODS FOR REMOVING PARTICLES FROM TURBINE AIR - A cooling arrangement is provided for a gas turbine engine with a turbine section. The cooling arrangement includes a first conduit to receive cooling air that includes particles; a separator system coupled to the first conduit to receive the cooling air and configured to remove at least a portion of the particles to result in relatively clean cooling air and scavenge air including the portion of the particles; and a second conduit coupled to the separator system and configured to direct the relatively clean cooling air to the turbine section. | 12-10-2015 |
20160084103 | SHROUDED BONDED TURBINE ROTORS AND METHODS FOR MANUFACTURING THE SAME - Methods are provided for manufacturing a shrouded bonded turbine rotor. A shrouded blade ring is formed. The shrouded blade ring is formed by bonding a unitary shroud ring to an assembled blade ring or assembling a plurality of shrouded turbine blade segments. The shrouded blade ring is bonded to a hub. The shrouded bonded turbine rotors are also provided. The shrouded bonded turbine rotor comprises a shrouded blade ring and a shroud. The shrouded blade ring comprises a plurality of turbine blade segments and a shroud. Each turbine blade segment comprises an airfoil portion including an airfoil having a root and a tip. The shroud covers the tip of each airfoil in the shrouded blade ring. A hub is bonded with the shrouded blade ring. | 03-24-2016 |
Patent application number | Description | Published |
20110311369 | GAS TURBINE ENGINE COMPONENTS WITH COOLING HOLE TRENCHES - An engine component includes a body having an interior surface and an exterior surface; a cooling hole formed in the body and extending from the interior surface to the exterior surface; and a concave trench extending from the cooling hole at the exterior surface of the body in a downstream direction. | 12-22-2011 |
20120148406 | TURBINE ROTOR DISKS AND TURBINE ASSEMBLIES - A turbine rotor disk is provided. The turbine rotor disk includes a hub, a ring attached to the hub, the ring including a plurality of posts extending radially outwardly and disposed around a circumference of the ring, each post including a first radially-extending face, a second radially-extending face, and a blade attachment surface extending axially between the first and second radially-extending faces, a main cooling air feed channel formed in each post and extending from the first radially-extending face toward the second radially-extending face, and a plurality of ancillary jet openings formed in each post and extending from the main cooling air feed channel to the blade attachment surface. | 06-14-2012 |
20130064639 | GAS TURBINE ENGINES WITH IMPROVED TRAILING EDGE COOLING ARRANGEMENTS - An airfoil is provided for a gas turbine engine. The airfoil includes a pressure side wall; a suction side wall; an internal cavity defined between the pressure side wall and the suction side wall for receiving cooling air; and a cooling arrangement within the internal cavity. The cooling arrangement includes a first land extending to a first downstream end aft of the pressure side trailing edge, a second land extending to a second downstream end aft of the pressure side trailing edge, the first land and second land defining a first slot, a first divider positioned radially in between the first land and the second land to define a first passageway of the first slot and a second passageway of the first slot, a first pin positioned upstream and indexed to the first passageway, and a second pin positioned upstream and indexed to the second passageway. | 03-14-2013 |
20130243606 | TURBINE BLADE TIP COOLING - A turbine blade includes a blade portion, the blade portion comprising a tip outer wall and a trailing edge, an internal cooling circuit, the internal cooling circuit being configured for directing cooling air within the blade portion, and a tip trailing edge slot positioned adjacent to the tip outer wall and the trailing edge, the tip trailing edge slot being fluidly connected to the internal cooling circuit. The tip outer wall is recessed at the tip trailing edge slot such that the tip outer wall is not provided over the trailing edge slot, thereby allowing cooling air to flow from the cooling circuit, into the trailing edge slot, and radially over the tip outer wall. | 09-19-2013 |
20130315710 | GAS TURBINE ENGINE COMPONENTS WITH COOLING HOLE TRENCHES - An engine component includes a body having an interior surface and an exterior surface; a cooling hole formed in the body and extending from the interior surface; and a nonconcave trench extending from the cooling hole to the exterior surface of the body in a downstream direction such that cooling air flow from within the body flow through the cooling hole, through the trench, and onto the exterior surface. | 11-28-2013 |
20140083116 | GAS TURBINE ENGINE COMPONENTS WITH BLADE TIP COOLING - A turbine rotor blade for a turbine section of an engine is provided. The rotor blade includes a platform and an airfoil extending from the platform into a mainstream gas path of the turbine section. The airfoil includes a pressure side wall, a suction side wall joined to the pressure side wall at a leading edge and a trailing edge, and a tip cap extending between the suction side wall and the pressure side wall. The rotor blade further includes an internal cooling circuit having a tip cap passage configured to deliver cooling air to the tip cap and a flow accelerator positioned within the tip cap passage of the internal cooling circuit. | 03-27-2014 |
20140154096 | TURBINE BLADE AIRFOILS INCLUDING SHOWERHEAD FILM COOLING SYSTEMS, AND METHODS FOR FORMING AN IMPROVED SHOWERHEAD FILM COOLED AIRFOIL OF A TURBINE BLADE - Turbine blade airfoils, showerhead film cooling systems thereof, and methods for cooling the turbine blade airfoils using the same are provided. The airfoil has a leading edge and a trailing edge, a pressure sidewall and a suction sidewall both extending between the leading and the trailing edges, and an internal cavity for supplying cooling air. A showerhead of film cooling holes is connected to the internal cavity. Each film cooling hole has an inlet connected to the internal cavity and an outlet opening onto an external wall surface at the leading edge of the airfoil. A plurality of surface connectors is formed in the external wall surface. Each surface connector of the plurality of surface connectors interconnects the outlets of at least one selected pair of the film cooling holes. | 06-05-2014 |
20150082808 | GAS TURBINE ENGINES WITH TURBINE AIRFOIL COOLING - An airfoil for a gas turbine engine is provided. The airfoil includes a body with a leading edge, a trailing edge, a first side wall extending between the leading edge and the trailing edge, and a second side wall extending between the leading edge and the trailing edge. The body defines an interior cavity. The airfoil includes an interior wall disposed within the interior cavity of the body and extending between the first wall and the second wall to define a supply chamber and a leading edge chamber. The interior wall defines a cooling hole with a base portion and a locally extended portion to direct cooling air from the supply chamber to the leading edge chamber such that the cooling air impinges upon the leading edge. | 03-26-2015 |
Patent application number | Description | Published |
20090008172 | Control of hybrid power regeneration during cruise control - A method of applying regenerative braking on a hybrid vehicle may include operating the hybrid vehicle in a cruise control mode to maintain a desired vehicle speed, determining whether an actual vehicle speed is greater than the desired vehicle speed, and braking the hybrid vehicle using a regenerative brake system. The braking may be applied during operation in the cruise control mode when the actual vehicle speed is determined to be greater than the desired vehicle speed to charge a battery system that powers an electric drive motor of the hybrid vehicle. | 01-08-2009 |
20090030585 | CAM PHASING CONTROL SYSTEM FOR IMPROVING REGENERATION EFFICIENCY - A control system comprises a cam position calculation module that determines intake and exhaust cam positions during operation of an engine. The engine includes a regeneration and fuel cut-off (FCO) mode. A cam position adjustment module generates alternate intake and exhaust cam positions during the regeneration and FCO mode. A cam positioning module positions the intake and exhaust cams based on lower values of the intake and exhaust cam positions and the alternate intake and exhaust cam positions, respectively, during the regeneration and FCO mode. | 01-29-2009 |
20090045780 | BATTERY CONTROL METHOD FOR HYBRID VEHICLES - A hybrid control module comprises a vehicle load module and a hybrid battery discharge module. The vehicle load module determines a first power based on power delivered to an accessory power module (APM). The hybrid battery discharge module determines a discharge power based on the first power and selectively controls power consumed by an inverter based on the discharge power when a state of charge of a hybrid battery is less than a first threshold and greater than a second threshold. The inverter and the APM selectively receive power from the hybrid battery. | 02-19-2009 |
20100191402 | TRANSMISSION AUXILIARY PUMP DIAGNOSIS METHOD AND APPARATUS - A method includes diagnosing a transmission auxiliary pump in a hybrid electric vehicle (HEV) having an engine and an auxiliary power module (APM). A predetermined HEV operating mode is detected during which the engine is running, and the pump is cycled between on and off states. An electrical output value of the APM is determined during the on and off states. A control action is executed when the output value exceeds a corresponding threshold. An HEV includes an engine, a transmission, an APM, a battery connected to the APM, and a transmission auxiliary pump. An algorithm diagnoses operation of the pump. The APM includes an algorithm for diagnosing the pump during a predetermined mode during which the engine is running by determining an electrical output value of the APM during on and off states of the pump, and executes a control action when the output value exceeds a threshold. | 07-29-2010 |
20100217470 | AUXILIARY PUMP DIAGNOSTIC SYSTEMS AND METHODS - An auxiliary pump diagnostic system includes a slip determination module and a fault determination module. The slip determination module determines slip of a torque converter based on an engine speed and a transmission input speed. The fault determination module diagnoses a fault in an auxiliary pump based on the slip of the torque converter. | 08-26-2010 |
20120029777 | GEAR PRESELECT SYSTEMS FOR A DUAL CLUTCH TRANSMISSION - A dual-clutch transmission (DCT) system includes a vehicle speed offset module that generates a vehicle speed offset signal based on a preselect time and a vehicle acceleration signal. A compensated vehicle speed module generates a compensated vehicle speed based on the vehicle speed offset signal and a vehicle speed. A preselect command module generates a predicted gear signal based on a comparison between the compensated vehicle speed and a shift point from a shift pattern module. The predicted gear signal, identifies a first predicted gear of a DCT. The preselect time is defined as at least an amount of time to disengage a second predicted gear and preengage the first predicted gear. | 02-02-2012 |
Patent application number | Description | Published |
20080300981 | CAMPAIGN OPTIMIZATION - Methods, systems, and software for combinatorial optimization are described. A first combination of offers are selected from a list of combinations of offers that pass a first set of rules belonging to a first category of rules, and it is determined whether the first combination of offers passes a second set of rules belonging to a second, different category of rules. If the first combination passes the second set of rules, the first combination is returned as a solution. | 12-04-2008 |
20090177522 | CONTACT STREAM OPTIMIZATION - Methods, systems, and software for conducting a marketing campaign are described. One or more scores associated with sending offers to proposed contacts are received; and an overall campaign score corresponding to a sum of the scores is optimized to generate optimal assignments of offers to customers. The optimal assignments are included in the marketing campaign. | 07-09-2009 |
20110307328 | Response Attribution Valuation - A computer-implemented method is described for determining a response attribution value that represents a credit assignment to a communication, for an associated response received from a recipient during a marketing campaign. | 12-15-2011 |
20120116787 | Response Attribution Valuation - A computer-implemented method is described for determining a response attribution value that represents a credit assignment to a communication, for an associated response received from a recipient during a marketing campaign. | 05-10-2012 |
20120185326 | CONTACT STREAM OPTIMIZATION USING FEC AND CC CONSTRAINTS - Methods, systems, and software for conducting a marketing campaign are described. One or more scores associated with sending offers to proposed contacts are received; and an overall campaign score corresponding to a sum of the scores is optimized to generate optimal assignments of offers to customers. The optimal assignments are included in the marketing campaign. | 07-19-2012 |
20120290371 | RESPONSE ATTRIBUTION VALUATION - A computer-implemented method is described for determining a response attribution value that represents a credit assignment to a communication, for an associated response received from a recipient during a marketing campaign. | 11-15-2012 |
20120290385 | RESPONSE ATTRIBUTION VALUATION - A computer-implemented method is described for determining a response attribution value that represents a credit assignment to a communication, for an associated response received from a recipient during a marketing campaign. | 11-15-2012 |