Abstract: Method of assigning a fixed subscriber unit (FSU) to communicate with a particular base station and a system including a plurality of wireless FSUs. The system includes a plurality of base stations, which are coupled to a telecommunications network. Each FSU is coupled to a subscriber communication device, and each FSU is configured to communicate wirelessly with at least a base station. The FSU measures signal strength of a set of base stations. The FSU sends a message with the measured signal strength of the set of base stations to a base station. Circuitry coupled to the base station determines at least a base station to which the FSU is to be assigned based on the message and additional information in the circuitry coupled to the base station. In response to the determining by the circuitry coupled to the base station, the base station sends to the FSU a message including the base station to which the FSU is to be assigned.

Abstract: A process of providing operation oriented common signaling information services supports a plurality of different types of network distributed signaling functions in a network. The process includes the steps of: instantiating a class of network objects in a plurality of network entities forming a community, each of the network entities in the community having at least one of the network objects of the class, the class of network objects for modeling a corresponding one of the network distributed signaling functions; and providing a transparent operation oriented interface between the network objects of the network entities of the community, the operation oriented interface enabling interoperations between the network objects. At least one of the network objects is associated with a corresponding managed object that is mapped to the corresponding network object by public attributes of the corresponding network object.

Abstract: According to one embodiment, a system (100) can include a number of processor subsystems (102-0 to 102-3) that can receive voice data samples from a network structure (NET A) and store the voice data samples in corresponding channel memories (120-0 to 120-3). Information for the voice data samples, including address locations, can be included in bin linked-lists (126-0 to 126-3). Bin linked-lists (120-0 to 120-3) can allow voice data samples in different channel memories (120-0 to 120-3) to be transmitted in a single multiplexed network voice packet.

Abstract: According to one embodiment, a system (900) includes a content addressable memory (CAM) address system (910) that receives voice packet data, and in response thereto, generates a channel number value (CHANNEL#). The CHANNEL# value can be used to generate a base address value for a voice packet buffer memory system (912). A base address value will correspond to a particular voice channel. The use of the CAM address system (910) can enable processing of voice data packets “on-the-fly,” allowing for rapid processing of voice data transmitted over a network structure and/or result in more efficient use of a buffer memory that stores voice data.

Abstract: Lubricating oil leakage in a turbocharger is reduced through the use of a gland seal having multiple channels in the gland face formed by ribs extending radially in a spiral or herringbone pattern for enhanced maximum pumping effect and minimized hoop stress related fatigue failures.

Abstract: An air brake compressor supply fitting for an internal combustion engine having a turbocharger and an exhaust gas recirculation (EGR) system is located downstream of the turbocharger and upstream of where the exhaust gas is introduced into the intake air of the engine. The supply fitting can be integrated into an outlet manifold of a charge air cooler (CAC associated with the turbocharger or into an EGR mixer for mixing exhaust gas with the intake air of the engine at a location in the EGR mixer upstream from the location where the exhaust gas is introduced into the intake air of the engine.

Abstract: A variable geometry turbocharger employs multiple vanes in the turbine inlet with a unison ring and integral cast wall in the turbine housing forming the nozzle walls. The unison ring incorporates actuation slots receiving tabs on the vanes for opening the closing the nozzle area upon rotation of the unison ring. An integral electrohydraulic actuator rotates the unison ring through a rack and pinion driven crank shaft with direct position feedback to the spring biased variable current solenoid via a cam on the crank shaft.

Abstract: A combination bearing supporting a shaft interconnecting the turbine and compressor wheels of a turbocharger incorporates a rotating journal bearing, a squeeze film damper with a registration and retention flange, and a ball bearing assembly. The ball bearing assembly has an outer race providing a thrust shoulder and a registration receiver for the damper flange. Ball roller elements are retained by the outer race and engaged between the thrust shoulder on the outer race and an opposing thrust shoulder on the shaft.

Abstract: In a catalytic combustor for gas turbines, the dimensions of the preheater and premix duct, the location of the preheater and premix fuel nozzles, and the number and location of air orifices in the combustor can inner liner are configured to result in low NOx production during both preheating combustion and catalytic combustion. Placement of the air orifices helps reduce the potential for autoignition within the premix duct, while enhancing fuel-air mixture uniformity upstream of the catalyst. At the same time, the overall configuration is optimized to result in the relative compactness of the catalytic combustor, making it particularly suitable for applications such as automotive turbine engines and microturbines.

Abstract: A axial to rotational motion actuator employs two sets of engaged helical splines on rotational collars provides a large degree of rotary actuation from a relatively short axial stroke to provides efficient non-binding and reduced effort actuator operation. This improved actuation movement makes the actuator assembly both more responsive to a hydraulic activating means, i.e., oil pressure, and enables packaging the actuator assembly in a compact size to optimize available space around a turbocharger and inside of an engine compartment.

Abstract: Turbocharger fatigue life monitors comprise at least one sensor that measures an actual operating condition of the turbocharger, e.g., turbine rotational speed or turbine inlet temperature. The device comprises a central processing unit for receiving information from each sensor and processing the information, using programs and predetermined turbocharger information, e.g., turbocharger material and stress data stored in one or more storage device in communication with the central processing unit, to provide an actual probability of turbocharger failure. The central processing unit compares the calculated probability of turbocharger failure to a predetermined specified probability of turbocharger failure stored in a storage device to determine whether turbocharger service is needed.

Abstract: A turbocharger for internal combustion engines having a valve mount cast or machined integral with the compressor housing and disposed along a compressor housing outside surface, the valve including a first air port in communication, through a restriction orifice, with the compressor volute and at least one of a second air port in communication with the first port, and a third port in communication with the compressor air intake. The mount includes attachments for a solenoid valve to the valve mount and a means for forming a leak-tight seal between the solenoid valve and the second and third air ports. A control system for actuating the solenoid allows venting of pressure from the second air port to the third air port for application in controlling a wastegate actuator or disengaging the wategate actuator by venting pressure from the first port to the second port.

Abstract: A microturbine power generation system includes an electrical generator, a turbine and a compressor intermediate the generator and the turbine. The turbine, compressor and electrical generator are secured together by a tieshaft. The tieshaft is prestressed such that faces of the turbine, electrical generator and compressor maintain contact during high-speed, high-temperature operation of the system.

Abstract: A die cast compressor housing includes an outer shell having a partial outer circumferencial volute wall portion and a projection surrounding the circumference of an aperture in the shell that mates with an insert having a first portion with a substantially cylindrical outer wall that is received in the aperture in the outer shell and includes an air inlet. The insert has a second portion extending radially outwardly and including a mating projection for engagement with the outer shell projection to form an inner circumferencial volute wall portion. A backplate has a third projection adjacent its outer circumference that is received in a relief in the outer shell and completes the outer circumferncial volute wall portion.

Abstract: An annular vane diffuser is disposed within a compressor housing of a turbocharger and employs a wave-type compression spring interposed between the vane diffuser and a backplate to provide a desired pressure loading on the vane diffuser to urge the vanes against the wall of the compressor housing forming one side of the diffuser. The vane diffuser constructed in this manner maintains contact with the compressor housing during turbocharger operation as it moves axially relative to the backplate, thereby providing improved diffuser efficiency.

Abstract: A variable geometry system for a turbocharger includes a sliding piston disposed within a turbine housing between a primary exhaust gas volute and turbine blades. The sliding piston is axially displaceable within the turbine housing to increase or decrease the volumetric flowrate of exhaust gas to the turbine. The sliding piston is positioned by an actuator having reciprocating movement translated through a rotating sleeve with a first pin engaging a helical slot for axial motion of the piston and a second pin engaging an alignment slot for maintaining axial alignment of the piston.

Abstract: A turbocharger with an integral Exhaust Gas Recirculation system for an internal combustion engine having a compressor rotor with two sets of vanes on opposite sides of the rotor disk for compression of charge air and recirculated exhaust gas. The charge air and recirculated exhaust gas streams are segregated in the turbocharger and an inlet and an outlet volute for the recirculated exhaust gas is integral with the turbocharger center housing. A variable geometry turbine inlet is provided for exhaust backpressure and fuel air mixture control and an integral exhaust gas bypass for recirculating EGR is controlled by an integral valve mounted with the turbine housing.

Abstract: A side sheet of a radiator has a thermal expansion joint to allow thermal relief in the radiator as the radiator expands due to temperature variations during operation. The thermal expansion joint is formed by first brazing the side sheet to the radiator core and then cutting through the side sheet.

Abstract: A vibration damper is provided on the cooling module of an internal combustion engine to attenuate the response of the module to low frequency road excited vibration.

Abstract: A microturbine power generating system includes a combustor and a gas compressor that provides a flow of natural gas to a combustor. The flow of natural gas is regulated by varying the speed of the gas compressor to maintain gas compressor discharge pressure at a set point. The system further includes a turbine and an electrical generator that is driven by the turbine during a run mode of operation. A rectifier and a main inverter convert an output of the electrical generator into fixed frequency ac power during the run mode. A secondary inverter operates an electric motor of the gas compressor at the variables speeds during the run mode. During a startup mode, however, the main inverter operates the gas compressor motor, and the secondary inverter operates the electrical generator as a starter motor.