Abstract: An abnormality diagnosis apparatus includes: a model acceleration calculation unit to calculate model acceleration that is a predicted value of motor acceleration; a motor acceleration calculation unit to calculate the motor acceleration from one of position information and speed information on a motor; and an abnormality determination unit to diagnose whether a power transmission mechanism is abnormal on the basis of the result of comparison between the motor acceleration and the model acceleration.

Abstract: The specification discloses a portable dialysis machine having a detachable controller unit and base unit. The controller unit includes a door having an interior face, a housing with a panel, where the housing and panel define a recessed region configured to receive the interior face of the door, and a manifold receiver fixedly attached to the panel. The manifold includes diaphragms adapted to minimize the dead space between the dialysis machine pins and improve responsivity. The base unit has a planar surface for receiving a container of fluid, a scale integrated with the planar surface and a heater in thermal communication with the container. Embodiments of the disclosed portable dialysis system have improved structural and functional features, including improved modularity, ease of use, and safety features.

Abstract: A method is provided for controlling a gear ratio change in a hydrostatic drive machine. The hydrostatic drive machine includes a variable displacement pump and at least one variable displacement motor fluidly connected with the variable displacement pump. The method includes a step of determining a gear ratio rate of change corresponding to a change from a current gear ratio to a new gear ratio. Start and stop overlap gear ratios corresponding to the gear ratio rate are determined and define an overlap range. The current gear ratio is changed to the new gear ratio using electronic signals at least in part by simultaneously changing displacements of the variable displacement pump and the at least one variable displacement motor at gear ratios within the overlap range, and sequentially changing displacements of the variable displacement pump and the at least one variable displacement motor at gear ratios outside the overlap range.

Abstract: To moderate the efficiency of engine braking when it is applied while a continuously variable transmission produces a large transmission ratio. Such a continuously variable transmission is constituted by a hydraulic pump having an input rotary member connected to an internal combustion engine of a vehicle, a hydraulic motor having an output rotational axis connected to a driving wheel. The hydraulic pump and hydraulic motor are coupled via a first oil passageway, which has a low oil pressure during the normal load operation of the engine but has a high oil pressure during the reverse load operation of the engine, and a second oil passageway, which has a high oil pressure during the normal load operation but has a low pressure during the reverse load operation, thereby forming a closed oil passageway circuit. At least the hydraulic pump or the hydraulic motor has a variable capacity.

Abstract: In a continuously variable hydrostatic transmission including a hydraulic pump unit driven by an input shaft, a grounded hydraulic motor unit, and an intermediate, wedge-shaped swashplate for developing torque on an output shaft in response to pumped exchanges of hydraulic fluid between the pump and motor units through swashplate ports, a ratio controller is provided to vary transmission ratio by changing the swashplate angular orientation and to engage a lock-up clutch directly mechanically coupling the input shaft to the output shaft when a 1:1 transmission ratio is set.

Abstract: Hydrostatic drive having synchronized direct through-drive. The invention relates to a hydrostatic drive, in particular a vehicle drive. The hydrostatic drive includes a drive motor (1), a hydrostatic transmission (2), having a hydraulic pump (3) coupled to the drive motor (1) and a hydraulic motor (4) coupled to an output drive shaft (11). For the direct drive of the output drive shaft (11) there is provided a direct through-drive shaft (16), which can be coupled, releasably, to the drive shaft (11) via a separating clutch (17). For the synchronization of the drive motor side speed of rotation (n.sub.1) to the drive shaft side speed of rotation (n.sub.2) at the separating clutch (17) there are provided two speed-of-rotation sensors (18, 19). The synchronization is effected by means of purposive loading or de-loading of the drive motor (11) by means of the hydrostatic transmission (2).

Abstract: A power transmission system, particularly a hydrostatic-mechanical power transmission system for industrial and farming vehicles and the like, comprising a first train of constantly meshed gears which are adapted to selectively connect, through a first pair of clutch units, the prime mover (of the vehicle) to a hydrostatic pump and/or to a hydrostatic motor; and a second train of gears which are adapted to selectively connect, through a second pair of clutch units, the hydrostatic motor or the pump to the output shaft, thus providing a hydrostatic continuously variable transmission (CVT) known in the art as I.sup.2.

Abstract: A control mechanism for a hydrostatic-mechanical power transmission system having a mechanical transmission unit driven through an input shaft connectable to a power source, and a hydrostatic transmission unit that is connectable to the input shaft and includes a pump and a motor each having a displacement setting swash plate. The control mechanism further includes a differential unit for connecting an output shaft to the mechanical transmission unit and the hydrostatic transmission unit to drive. At least either of the displacement setting swash plates is variable in angle.

Abstract: A hydraulic transmission apparatus has: a swash plate hydraulic pump having a pump cylinder block; and a swash plate hydraulic motor which has a motor cylinder block and is arranged coaxially in a line with the swash plate pump so as to face in the same direction as the hydraulic pump. The hydraulic pump and motor area connected by a hydraulic passage system. The pump swash plate is provided at a side of the motor cylinder block, the side being close to the hydraulic pump. The motor swash plate is provided at a side of the motor cylinder block, the side being remote from the hydraulic pump, and its tilt angle is varied so as to vary the capacity of the hydraulic motor. The hydraulic passage system has a valve body provided at a side of the hydraulic pump so as to be substantially coaxial with the hydraulic pump. A hydraulic distributor ring is provided so as to be in slidable contact with the valve body.

Abstract: Method and device for controlling a motor vehicle power unit consisting of an internal combustion engine and a variable-ratio power divider transmission. For adjusting the output, use is made of the data from the only sensor sensing the speed at the transmission output end, and from the accelerator and brake pedals. The resultant reference value is directly transferred to an engine function generator in which engine characteristics are stored. The output signal from the engine function generator is used to control the throttle or the fuel supply system actuating lever. The reference generator also directly influences a speed function generator, in which the optimum speed is stored. Its output signal is linked with the indication from the sensor so as to form a reference value for the transmission ratio and is processed in a transmission control unit for form actuating signals for the transmission.