摘要:
A cooling channel piston for an internal combustion engine which includes a piston bottom and a piston shaft that are joined thereto of a friction welding process. The piston bottom and the piston shaft jointly form a cooling channel. An annular wall which radially delimits the cooling channel towards the outside is formed by the piston bottom and/or the piston shaft. The annular wall can be sealed by a welding process once the piston bottom and the piston shaft have been joined together.
摘要:
A smart card contains a carrier body for receiving at least one system component, which has (in each case) a plurality of electrical components, and which unites the electrical functions for the operation of the smart card. The system component terminates approximately evenly with the top side of the card body of the smart card. At least one of the electrical components is accessible from the top side of the smart card.
摘要:
The method and the device generate digital signal patterns. Signal patterns or signal pattern groups are stored in a very small buffer register. The position of a following signal pattern or following signal pattern group is also stored in the form of a branch address, together with each signal pattern or each signal pattern group. A simple control logic circuit receives a control signal and determines whether the content of the currently addressed group is output continuously or the following group given by the branch address stored in the register is output after the currently selected group has been completely output. The novel method and device can advantageously be used for testing semiconductor memories and implemented in a cost-effective semiconductor circuit which is remote from a conventional test system.
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:
A circuit configuration for generating control signals for testing high-frequency synchronous digital circuits, especially memory chips, is described. A p-stage shift register which is clocked at a clock frequency corresponding to the high clock frequency of the digital circuit to be tested has connected to its parallel loading inputs p logical gates which logically combine a static control word with a dynamic n-position test word. The combined logical value is loaded into the shift register at a low-frequency loading clock rate so that a control signal, the value of which depends on the information loaded into the shift register in each clock cycle of the clock frequency of the latter is generated at the serial output of the shift register.
摘要:
A connection element in an integrated circuit having a layer structure disposed between two conductive structures. The layer structure is formed by an insulating layer, which can be destroyed by application of a predetermined voltage, and a silicon layer. The insulating layer adjoins a first conductive structure made of tungsten.
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 fixing device for fixing cameras and other optical devices to stands or for connecting them to other accessories, includes an adapter journal joined to the camera or other optical devices and a receiving device connected to the stand or other accessories and which is provided with an opening for receiving the adapter journal, and a rotatable locking device. The opening is configured as an insert opening on a part which can be displaced axially in an outward manner by means of housing part of the receiving device such that the adapter journal can be inserted radially into the insert opening.
摘要:
A method for producing a piston of an internal combustion engine in which a first blank and at least one additional black are provided with a somewhat cylindrical shape. The blanks are joined together, and the obtained piston blank is subjected to a shaping process in which a combustion chamber cavity of the piston is formed in the area of a joining point between the first and the second blank. The material of the second blank forms a reinforcement for at least the combustion chamber cavity.
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).