| GM GLOBAL TECNOLOGY OPERATIONS, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110219752 | TARGETED PARTICULAR MATTER FILTER REGENERATION SYSTEM - A regeneration system includes a particulate matter (PM) filter. The PM filter has an upstream end that receives an exhaust gas from an engine. An air pump circuit directs ambient air to a first exhaust conduit upstream from the PM filter. A control module determines a current soot loading level of the PM filter. The control module also at least one of operates the engine in a rich mode and activates an air pump of the air pump circuit when the current soot loading level is greater than a predetermined soot loading level. | 09-15-2011 |
| 20110214650 | ENGINE-OUT NOX VIRTUAL SENSOR FOR AN INTERNAL COMBUSTION ENGINE - A method for controlling an internal combustion engine includes monitoring engine operation including a parameter descriptive of NOx generation within the engine, determining a fast transient NOx estimate with a dynamic model based upon the monitored engine operation, and during a fast transient engine operation including an increase in an operating state of the engine and a substantial closing of an exhaust gas recirculation valve, controlling an engine system based upon the fast transient NOx estimate. | 09-08-2011 |
| 20110205149 | MULTI-MODAL INPUT SYSTEM FOR A VOICE-BASED MENU AND CONTENT NAVIGATION SERVICE - A system and method for providing voice prompts that identify task selections from a list of task selections in a vehicle, where the user employs an input device, such as a scroll wheel, to activate a particular task and where the speed of the voice prompt increases and decreases depending on how fast the user rotates the scroll wheel. | 08-25-2011 |
| 20100269609 | DUAL CLUTCH TRANSMISSION - A transmission includes an input member, an output member, first and second shafts, first and second countershafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member. | 10-28-2010 |
| 20100224160 | ENGINE ASSEMBLY WITH VALVE SEAT VENT PASSAGES AND METHOD OF FORMING - An engine assembly may include an engine block defining a cylinder bore, a cylinder head fixed to the engine block, and a valve seat insert. The cylinder head may include an intake port, defining an inlet in fluid communication with an air source and an outlet in fluid communication with the cylinder bore. The valve seat may be defined at the outlet of the intake port and may include a stepped region. The stepped region may define a seating surface extending radially outward from the intake port. The seating surface may include a series of protrusions circumferentially spaced from one another around the outlet and forming a series of recesses therebetween. The valve seat insert may be located within the stepped region and may include a first axial end surface abutting the protrusions on the seating surface. | 09-09-2010 |
