Abstract:
A method is disclosed for estimating clutch engagement characteristics (30) of a friction clutch system in a vehicle powertrain (14, 10, 12, 26). A dynamic model (42) of the system is used under conditions that cause clutch slipping. Algebraic equations defining a functional relationship between clutch torque and an engagement angle have characteristic parameters that are estimated using a non-linear least squares technique (62). A non-linear least squares technique (62) iteratively minimizes the difference between a measured output clutch disk speed and an output clutch disk speed from the system dynamic model (42) for the same inputs until a small insignificant error is reached (64). Parameter estimates are used to compile an estimated clutch engagement characteristic (28).
Abstract:
One of the inventors' concepts relates to controlling a temperature of a diesel exhaust aftertreatment device, such as a DPF or a fuel reformer, in which combustion is taking place. The concept is to inject reductant to combust in an upstream device, thereby removing oxygen in the exhaust and limiting combustion in the downstream device. The same total amount of heat may be generated, but the distribution is different and limits temperatures in the downstream device. The temperature limiting effect may be through one or more of the thermal storage capacity of the upstream device and or other upstream devices, the additional heat loss to the surroundings due to higher temperatures upstream in the exhaust system, or the benefit of a more uniform distribution of heat in the downstream device, which mitigates local hot spots. This concept may be used in a temperature control system.
Abstract:
An adapter (102) is for mounting an electrical switching apparatus, such as a circuit breaker (106), on the back panel (10) of an enclosure, such as a switchgear cabinet. The back panel has at least one aperture (12). The adapter includes a first end portion (116) coupled at or about the aperture (12) of the back panel, an engaging portion (120) and engaging and securing the circuit breaker to the adapter, a fastener (26), and a second end portion (122) disposed distal from the first end portion and including an elongated slot (124). The elongated slot receives the fastener in order to couple the adapter to the back pannel when the fastener is fastened, while enabling adjustement of the adapter and the circuit breaker coupled thereto, with respect to the back panel, when the fastener is unfastened. The first end portion, the engaging portion and the second end portion form a single piece adapter. An enclosure assembly is also disclosed.
Abstract:
A power generation system comprising a LNT for exhaust aftertreatment. The LNT has an effective operating temperature range. When the LNT is near a limit of its effective operating temperature range, the transmission is used to select operating points that increase the LNT's effectiveness. Generally, these operating points reduce the exhaust flow rate, although other factors such as the exhaust temperature may also be taken into account in selecting the operating points. Preferably, the LNT's effective operating temperature range includes exhaust temperatures produced by the engine at its point of peak power output, whereby the LNT does not approach the limits of its effective operating temperature range except when the engine is at less than peak power. At lower power levels, it is generally possible to select operating points that provide lower exhaust flow rates than the flow rate occurring at the peak power level.
Abstract:
A low permeable hose that has an increased resistance to permeation of refrigerants. The hose includes refrigerant barrier layer (14) that is positioned between an innermost layer (12) and an outer layer (22). The refrigerant barrier layer resists the permeation of refrigerants through the hose. The innermost layer protects the refrigerant barrier layer form sources of moisture from within the hose. The outer layer protects the refrigerant barrier layer from sources of moisture from outside the hose.
Abstract:
A hydraulic circuit (10) in fluid communication with an added motion valve system (100) is disclosed. The hydraulic circuit (10) in fluid communication with an added motion valve system (100) includes at least a first valve (20a) that permits flow of a fluid (11) in a first fluid supply channel (50a) to an added motion actuator volume (104) by way of a first fluid port (36) and a second fluid port (38) and at least a second valve (20b) that permits flow of the fluid (11) in a second fluid supply channel (50b) to the first fluid port (36), the second fluid port (38), and a third fluid port (40). A method for controlling a hydraulic circuit (10) in fluid communication with an added motion valve system (100) is also disclosed.
Abstract:
An electrical distribution system includes a switchgear or motor control center cabinet, a plurality of first protective, metering or control devices internal to the cabinet, and one or more second devices. The second devices include display devices mounted on the cabinet, display devices external to the cabinet and monitoring devices structured to monitor the system and communicate to a remote location. Communications among the first devices and the second devices are wireless communications.
Abstract:
The invention provides a fuel cell compressor system that comprises a motor, including a motor shaft driven by the motor; a drive housing at least partially surrounding the motor shaft; a first gear set driven by the motor shaft; a carrier torque tube driven by the first gear set; and an impeller. The impeller includes an impeller shaft driven by the second gear set, so that the impeller shaft is configured to rotate at a speed greater than motor speed. Embodiments of the invention may also be used with a multi-stage compressor that allows, for example, first and second impellers to rotate at different speeds. Embodiments of the invention may also include removal of a gear set driving the carrier torque tube or the impeller shaft, so that the impeller shaft speed is divided between one or more bearings supporting the carrier torque tube and one or more bearings supporting the impeller shaft.
Abstract:
A system for controlling pressure in a transmission comprises a transmission control unit (102), a valve controller (104) that receives a desired pressure (202) as input from the transmission control unit (102), a valve driver (108), a valve (112) that regulates an amount of fluid in a transmission clutch (106), and a pressure transducer that reads a pressure in the transmission clutch (106) and outputs a pressure reading (204) to the valve controller (104), wherein the valve controller (104) comprises logic for outputting to the valve driver (108) an instruction for controlling the valve (112), the instruction being formulated using the desired pressure (202) and the pressure reading (204).
Abstract:
A modular release mechanism (30) disclosed herein comprises a release sleeve (40) which is slideably disposed on a driven shaft, the release sleeve has an axis of rotation, a first end (50) and a second end (60). The release sleeve has a bearing housing portion (65) disposed at the second end for receiving the bearing (70). The bearing housing portion has a shoulder (67) for locating the bearing therein. The bearing housing portion has a retainer for securing the bearing therein by limiting the axial travel of the bearing relative to the release sleeve when the outer race of the bearing is disposed between the shoulder of the bearing housing portion and the retainer. The retainer may be selectively engageable in that the retainer is moveable from a first radial position to a second radial position it comprises at least one radially extending detent portion (82) which is moveable by rotating a radially extending lever (88), from a first angular position to a second angular position relative to the release sleeve.