Patent application number | Description | Published |
20090177932 | METHOD AND APPARATUS FOR TRACKING, REPORTING AND CORRECTING SINGLE-BIT MEMORY ERRORS - Various embodiments include an apparatus comprising a memory device including a plurality of addressable memory locations, and a memory manager coupled to the memory device, the memory manager including a scheduling unit and a histogram data structure including a plurality of counters, the scheduling unit operable to detect a single-bit error in data read from the memory device, and to increment a value in a particular one of the plurality of counters, the particular one of the plurality of counters corresponding to the particular bit in the accessed data which incurred the single-bit error in the read data. | 07-09-2009 |
20090287889 | READ/WRITE CLUSTERING SYSTEMS AND METHODS - Various embodiments include fault tolerant memory apparatus, methods, and systems, including a memory manager for supplying read and write requests to a memory device having a plurality of addressable memory locations. The memory manager includes a plurality of banks. Each bank includes a bank queue for storing read and write requests. The memory manager also includes a request arbiter connected to the plurality of banks. The request arbiter removes read and write requests from the bank queues for presentation to the memory device. The request arbiter includes a read phase of operation and a write phase of operation, wherein the request arbiter preferentially selects read requests for servicing during the read phase of operation and preferentially selects write requests for servicing during the write phase of operation. | 11-19-2009 |
20100318741 | MULTIPROCESSOR COMPUTER CACHE COHERENCE PROTOCOL - A multiprocessor computer system comprises a processing node having a plurality of processors and a local memory shared among processors in the node. An L | 12-16-2010 |
20100324854 | MEMORY-DAUGHTER-CARD-TESTING METHOD AND APPARATUS - A memory daughter card (MDC) is described, having a very high-speed serial interface and an on-card MDC test engine that allows one MDC to be directly connected to another MDC for testing purposes. In some embodiments, a control interface allows the test engine to be programmed and controlled by a test controller on a test fixture that allows simultaneous testing of a single MDC or one or more pairs of MDCs, one MDC in a pair (e.g., the “golden” MDC) testing the other MDC of that pair. Other methods are also described, wherein one MDC executes a series of reads and writes and other commands to another MDC to test at least some of the other card's functions, or wherein one port executes a series of test commands to another port on the same MDC to test at least some of the card's functions. | 12-23-2010 |
Patent application number | Description | Published |
20120192817 | VARIABLE FORCE VALVE SPRING - Devices and related methods are disclosed that generally involve variable force valve springs for controlling the motion of an engine valve. The force exerted by the valve spring can be adjusted by altering the pressure at which a fluid is supplied to a fluid chamber thereof, by altering the volume of the fluid chamber, and/or by changing the aggregate surface area over which fluid pressure is coupled to the engine valve. Associated fluid control systems are also disclosed herein, as are various methods for adjusting the force of a valve spring based on a variety of engine parameters, such as engine speed, engine load, and/or a combination thereof. | 08-02-2012 |
20120192818 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM WITH CAM PHASER - Devices and related methods are disclosed that generally involve variable actuation of engine valves. In one embodiment, a valve train for a split-cycle internal combustion engine or an air hybrid split-cycle engine is provided that includes a cam phaser, a dwell cam, an adjustable mechanical element for performing a variable valve actuation function, and/or a valve seating control device. The devices and methods disclosed herein also have application in conventional internal combustion engines and can actuate inwardly-opening and/or outwardly-opening valves. | 08-02-2012 |
20120192840 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM WITH VALVE DEACTIVATION - Devices and related methods are disclosed that generally involve the selective deactivation of one or more engine valves. In one embodiment, a split-cycle internal combustion engine is provided in which a high-speed trigger valve is used to fill and drain a hydraulic tappet that forms part of a lost-motion system of an engine valve. A spool valve can be used to selectively disconnect the tappet from the trigger valve, thereby deactivating the associated engine valve (i.e., preventing the engine valve from opening). The devices and methods disclosed herein also have application in conventional internal combustion engines and can be used with inwardly-opening and/or outwardly-opening valves. | 08-02-2012 |
20120192841 | SPLIT-CYCLE AIR HYBRID ENGINE WITH DWELL CAM - Devices and related methods are disclosed that generally involve actuating an engine valve with a cam having a dwell section. These devices and methods have application in split-cycle engines, air hybrid engines, conventional engines, and/or various combinations thereof. Both inwardly- and outwardly-opening valves can be actuated with the devices and methods disclosed herein. Additional valve train elements are disclosed, including rockers, lost-motion systems, and valve seating control devices. | 08-02-2012 |
20140182529 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM WITH VALVE DEACTIVATION - Devices and related methods are disclosed that generally involve the selective deactivation of one or more engine valves. In one embodiment, a split-cycle internal combustion engine is provided in which a high-speed trigger valve is used to fill and drain a hydraulic tappet that forms part of a lost-motion system of an engine valve. A spool valve can be used to selectively disconnect the tappet from the trigger valve, thereby deactivating the associated engine valve (i.e., preventing the engine valve from opening). The devices and methods disclosed herein also have application in conventional internal combustion engines and can be used with inwardly-opening and/or outwardly-opening valves. | 07-03-2014 |
20140283772 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM WITH CAM PHASER - Devices and related methods are disclosed that generally involve variable actuation of engine valves. In one embodiment, a valve train for a split-cycle internal combustion engine or an air hybrid split-cycle engine is provided that includes a cam phaser, a dwell cam, an adjustable mechanical element for performing a variable valve actuation function, and/or a valve seating control device. The devices and methods disclosed herein also have application in conventional internal combustion engines and can actuate inwardly-opening and/or outwardly-opening valves. | 09-25-2014 |
Patent application number | Description | Published |
20110067661 | LOST MOTION VARIABLE VALVE ACTUATION SYSTEM WITH VALVE CATCH PISTON - Hydraulic lost motion systems and methods for actuating an internal combustion engine valve include a master piston slidably disposed in a housing. One or more master piston fluid passages extend from a bore provided in the master piston and register with a fluid passage extending through the housing. A slave piston is slidably disposed in a lower portion of the master piston bore and a valve catch piston is slidably disposed in an upper portion of the master piston bore. The valve catch piston may have a hollow interior, a lower end orifice extending from the hollow interior through a lower end of the valve catch piston, one or more side passages extending through a side portion of the valve catch piston, and one or more seating passages extending through the valve catch piston wall. | 03-24-2011 |
20110197833 | Variable Lost Motion Valve Actuator and Method - A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed. | 08-18-2011 |
20130152889 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM - Valve actuation systems are disclosed herein that allow valve opening timing to be varied using a cam phaser and that allow valve closing timing to be varied using a lost-motion system. In one embodiment, an actuation system is provided that has a locked configuration in which a bearing element is held in place between a cam and a rocker to transmit cam motion to an engine valve. The actuation system also has an unlocked configuration in which the bearing element is permitted to be at least partially ejected from between the cam and rocker, such that cam motion is not transmitted to the engine valve. The actuation system is switched to the unlocked configuration by draining fluid therefrom through a main valve which is piloted by a trigger valve. The actuation system also includes integrated autolash and seating control functionality. | 06-20-2013 |
20140165937 | VARIABLE LOST MOTION VALVE ACTUATOR AND METHOD - A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed. | 06-19-2014 |
20140311449 | VARIABLE LOST MOTION VALVE ACTUATOR AND METHOD - A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed. | 10-23-2014 |
Patent application number | Description | Published |
20090060786 | MICROFLUIDIC APPARATUS FOR WIDE AREA MICROARRAYS - A microfluidic device that includes: a) a fluid inlet having a semi-circular groove and b) a flow chamber comprising an inner wall having an inlet end. The fluid inlet is in communication with the flow chamber. The inner wall at the inlet end is curved and has a radius similar to the radius of semi-circular groove. | 03-05-2009 |
20090060787 | METHOD FOR UNIFORM ANALYTE FLUID DELIVERY TO MICROARRAYS - A method of chemical analysis that includes: a) introducing an analyte fluid having a flow to a surface of a sample chip through a microfluidic device comprising i) a fluid inlet having a semi-circular groove and ii) a flow chamber comprising an inner wall having an inlet end, where the fluid inlet is in communication with the flow chamber and where the inner wall at the inlet end is curved and has a radius similar to the radius of semi-circular groove; b) maintaining the flow of the analyte fluid such that the analyte fluid forms a pattern on the surface of the sample chip, the pattern approximating the semi-circular groove; c) maintaining the flow of the analyte fluid so that a linear fluid front forms on the surface of the sample chip at the inlet end; and d) maintaining the flow so that the linear fluid front moves along the surface of the sample chip. | 03-05-2009 |
20090262355 | SURFACE PLASMON RESONANCE SYSTEM AND APPARATUS FOR INTERROGATING A MICROARRAY - According to an embodiment, an SPR analysis system includes a housing enclosing with a fluid supply volume substantially enclosed within the housing, a flow cell module configured to receive reagents and analyte from the fluid supply volume, and an enclosed optics assembly configured to interrogate a microarray portion of the flow cell module. | 10-22-2009 |
20090262356 | USER INTERFACE AND METHOD FOR USING AN SPR SYSTEM - According to an embodiment, an SPR analysis system includes an SPR analysis system control computer program having a graphical user interface and configured to control the operation of an SPR analysis apparatus. According to an embodiment, an SPR data analysis computer program includes an SPR microarray video viewer and a sensorgram generator responsive to the SPR video. | 10-22-2009 |