摘要:
The invention relates to the internal exhaust-gas recirculation in an internal combustion engine with gas exchange valves periodically controlled by a camshaft (22) in accordance with the four-stroke principle, in which, during the gas exchange exhausting of exhaust gas from the respective cylinder (1) into the exhaust duct (5), an intake valve (2) associated with the respective cylinder (1) is open in a crank angle range after top dead center of the ignition of the gas mixture present in the cylinder (1), in order to exhaust part of the exhaust gas into an intake duct (3), so that during the next gas exchange intake both fresh gas and exhaust gas are taken in from the intake duct (3), the respective intake valve (2) being actuated during the gas exchange exhausting independently of the periodic gas exchange intake, and the additional opening of the respective intake valve (2) being carried out in the range from 110 to 150% of the opening angle of the start of opening of the exhaust duct (5) by the exhaust valve (4).
摘要:
The system enables testing fast synchronous semiconductor circuits, particularly semiconductor memory chips. Various test signals such as test data, data strobe signals, control/address signals are combined to form signal groups and controllable transmit driver and receiver elements allocated to them are in each case jointly activated or, respectively, driven by timing reference signals generated by programmable DLL delay circuits. A clock signal generated in a clock generator in the BOST semiconductor circuit is picked up at a tap in the immediate vicinity of the semiconductor circuit chip to be tested and fed back to a DLL circuit in the BOST chip where it is used for eliminating delay effects in the lines leading to the DUT and back to the BOST.
摘要:
An actuator for a speed governor of an elevator system includes a governor wheel equipped with at least two flyweights. The governor wheel can be driven by a governor cable looped around it. An actuator wheel is stationary in a basic position. A coupler engages the actuator wheel when the governor wheel attains an actuation speed and thus couples with the governor wheel so that the actuator wheel is caused to rotate. An elastic material, preferably transmitting a high degree of friction, is provided between the coupler and the actuator wheel. The actuator wheel has a lining or tyre of the elastic material and/or the coupler is equipped with the elastic material.
摘要:
According to one general aspect, a method for managing a plurality of different tenants on a shared computing infrastructure including at least one application server apparatus may include associating a tenant with a plurality of services, wherein each service provides a set of actions that the service is configured to perform. In some embodiments, the method may include associating at least one tenant runlevel for each associated service with the tenant. In various embodiments, the method may include, when the application server apparatus executes a service for the tenant, determining the tenant runlevel associated with the tenant, and managing the set of actions configured to be performed by the service based at least in part upon the tenant runlevel associated with the tenant and the service.
摘要:
A motor vehicle brake system having a hydraulic cable, via which a wheel brake module can be pressurized by a brake medium using brake pressure from a brake cylinder and to which a low pressure accumulator is connected for temporarily receiving excess brake medium, wherein the low pressure accumulator is connected to the hydraulic cable via a backflow line and a return pump interposed in the return line in order to return temporarily stored brake medium, the return pump being cyclically actuated for adjusting the pump capacity such that an activation occurs within each braking cycle during a portion of pump cycles that corresponds to the pump capacity, is intended to provide particularly high operational safety while also providing a comfortable pedal sensation.
摘要:
A portable data storage configuration has a card base and a display device, the display device being fixed to the card base. The display device is only partially connected to the card base by the fixed connection. This mounting technique results in that almost no lateral or shear forces act on the display device.
摘要:
A test configuration for the functional testing of a semiconductor chip is described. The semiconductor chip, which can be subjected to a functional test for the purpose of checking the functionality of the semiconductor chip, is disposed on a support material. The semiconductor chip contains a self-test unit for generating test information and for carrying out the functional test. An energy source serves for providing an electrical energy supply from energy that is fed in contactlessly. The energy source is disposed on the support material and is connected to the semiconductor chip for the purpose of providing an energy supply on the semiconductor chip. The test configuration makes it possible to carry out a contactless functional test and to reduce the test costs by virtue of high parallelism during the functional test of a plurality of semiconductor chips.
摘要:
The invention relates to a system for testing fast integrated digital circuits, in particular semiconductor modules, such as for example SDRAMs. In order to achieve the necessary chronological precision in the testing even of DDR-SDRAMs, with at the same time the high degree of parallelism of the test system required for mass production, an additional semiconductor circuit module (BOST module) is inserted into the signal path between a standard testing device and the SDRAM to be tested. This additional module is set up so as to multiply the relatively slow clock frequency of the conventional testing device, and to determine the signal sequence for control signals, addresses, and data background with which the SDRAM module is tested, dependent on signals of the testing device and also on register contents, programmed before the test, in the BOST module.
摘要:
A telescopically extendible focusing hood which improves the viewing of the LCD screen of a digital camera in bright surrounding light. The focusing hood can be fixed to the rear wall of the camera, surrounding the LCD screen. The focusing hood preferably has an anti-reflection-coated enlarging lens or glass disk which covers the entire cross-section of the focusing hood in parallel to the fixing plane. In its extended state, the focusing hood can be used with a single lens in the manner of a 35 mm camera finder. When the enlarging lens is pushed in, the focusing hood can be used with two lenses for assessing the image.
摘要:
An integrated semiconductor memory device that can be subjected to a memory cell test in order to determine functional and defective memory cells includes addressable normal memory cells, a first redundancy unit having first addressable redundant memory cells and optically programmable switches for replacing an address of a defective normal memory cell by the address of a first redundant memory cell, and a second redundancy unit having second addressable redundant memory cells and electrically programmable switches for replacing an address of a defective normal memory cell by the address of a second redundant memory cell. The second redundancy unit can be connected by the activation of an irreversibly programmable switch, which enables a simplified functional test at the wafer level.