摘要:
A pressure wave supercharger includes a cell rotor which is arranged in the housing and driven by an electric motor. The electric motor includes a rotating member which is connected to the cell rotor, and a fixed member. A bearing assembly is provided to simultaneously support the cell rotor within the housing and the rotating member in relation to the fixed member.
摘要:
In a magnetic resonance apparatus and a method for the operation of a magnetic resonance apparatus, the measured data generating unit sends additional control information to the measured data evaluation unit, and the measured data evaluation unit sends feedback information to the measured data acquisition unit. The feedback information influences the generation of measured data in the measured data generation unit.
摘要:
An electromagnetic actuator operating like a holding magnet includes an anisotropic permanent magnet connected with a ferromagnetic yoke, an electromagnet and a ferromagnetic armature that is movable relative to the electromagnet. The yoke is cup-shaped and has a circular, elliptical or polygonal cross-section to reduce magnetic stray flux. All the aforementioned components are arranged coaxially with respect to a column-shaped core. The periphery of the yoke includes at least one opening configured for passage of the electrical conductors controlling the electromagnet. The opening also enables pressure equalization and vapor diffusion between the interior space of the actuator and the environment. The opening is oriented in the magnetic flux direction and is constructed to reduce eddy currents. The actuator also includes components forming an electrical freewheel circuit or an electrical energy store circuit.
摘要:
In a method of operating an internal combustion engine which has a fresh-air line, an exhaust-gas line, and an exhaust gas recirculation system, an exhaust gas flow is fed from the exhaust gas recirculation line of the exhaust gas recirculation system to the fresh-air line. The exhaust gas flow is hereby divided by a gas flow divider during flow from the exhaust gas recirculation line to the fresh-air line through actuation of a control element such that a first flow portion flows back to the exhaust gas recirculation line and a second flow portion flows to a continuing section of the exhaust-gas line. The exhaust gas recirculation system with the gas flow divider is operated substantially in the absence of a back pressure.
摘要:
In a method for the selection of a local antenna from among a number of local antennas that are spatially distributed in a diagnostic magnetic resonance apparatus, a target volume for the imaging is excited to emit magnetic resonance signals. The magnetic resonance signals are received with the local antennas. A characteristic quantity in the magnetic resonance signals respectively received by the local antennas is determined, this characteristic, for each antenna, quantity representing a measure for the distance of the target region from that local antenna. The local antenna is selected that is located closest to the target region, from among the multiple local antennas, dependent on the characteristic quantity.
摘要:
A magnetic resonance imaging apparatus has a magnet with at least one patient receptacle and at least one support plate, as well as a predetermined number of transmit and/or receive coils. In at least two predetermined exposure positions, at least one exposure respectively takes place using predetermined adjustment parameters. High-contrast exposures can be obtained in a short time, by the required adjustment parameters being determined in a preceding adjustment process, and the exposures are carried out in a subsequent exposure process.