摘要:
In a fuel cell system having a gas generation system for providing hydrogen from a carbon- and hydrogen-containing medium for a fuel cell unit, means are provided for adjusting pressure in the gas generation system and/or mass flow through the fuel cell unit, upstream of the fuel cell unit. In a transition from a part-load range to a full-load range, the pressure can be at least briefly reduced, and in a transition from a full-load range to a part-load range, the pressure can be at least briefly increased.
摘要:
Plastics moulded parts, suitable for the motor vehicle sector, consisting of a transparent plastics material the rear face of which is provided with a colour- and/or effect-producing lacquer.
摘要:
Process for the production of a three-dimensional substrate provided with a protective and decorative laminar structure, in which a primer layer of a coating composition (I) which is electrically conductive in the stoved state is applied without spraying onto an electrically conductive substrate and stoved, whereupon a substrate not yet in the desired three-dimensional shape is shaped, whereupon a second coating layer of an electrophoretically depositable coating composition (II) is electrophoretically deposited and stoved and whereupon a plastic film is applied.
摘要:
This invention relates to a process for the production of a multilayer lacquer coating on a substrate having an autophoretically coatable, metallic surface, in which a first priming coat of an autophoretically depositable coating composition is autophoretically deposited and then stoved and one or more subsequent coats are then applied by spraying, wherein the autophoretically depositable coating composition contains one or more constituents having an adhesion promoting action and/or wherein before one or more further coats are applied by spraying, the stoved priming layer produced by autophoretic deposition is physically and/or chemically treated and/or provided with an adhesion promoting coat.
摘要:
Regulation of energy supplied to an electric motor from an energy supply system including a fuel cell and an energy storage buffer such as a battery, improves the dynamic response of the motor by adding current from the energy storage buffer to the current from the fuel cell during acceleration.
摘要:
A method and an apparatus produce current values dependent on the position of the accelerator pedal controlling the power of one or more electric drives for moving a mobile device that is energised by a fuel cell. The time required by the drive or drives to respond to a change in the desired current value produced as a function of the position of the accelerator pedal is kept as small as possible by producing a current value—convertible into a desired torque value—which is held continuously at a value sufficient to ensure that the output voltage of the fuel cell just avoids undershooting a critical limit.
摘要:
A process for the effect coating of polar plastics parts having a grained surface, characterised in that a) a first coating layer, which is free from effect pigments and modified polyolefines and which comprises a coating medium based on physically drying binder vehicle systems which contain one or more polyurethane resins and/or oligomeric urethanes and which do not chemically crosslink at the temperatures employed in process step f), is applied at a dry coat thickness of 5 to 40 .mu.m, b) is dried at 20.degree. to 80.degree. C. down to a residual content of 3 to 20% by weight of the volatile fractions which are contained in the applied coating film at the temperature employed, c) is overcoated wet-into-wet with an effect base lacquer, d) is dried at 20.degree. to 80.degree. C. down to a residual content of 3 to 20% by weight of the volatile fractions which are contained in the applied coating film at the temperature employed, e) is overcoated wet-into-wet with a liquid clear lacquer which chemically crosslinks with the formation of covalent bonds at the drying temperatures employed in process step f), and f) the three coating layers which are obtained are jointly dried or hardened at temperatures of 60.degree. to 110.degree. C.
摘要:
A method for controlling the communications of a computer in a computer network or a plurality of single computers in a computer network, in which the computer is connected to other computers and the single computers are connected with each other via a standard network LAN and a high performance network SAN. Each single computer comprises, in an operation system kernel, a protocol unit connected with the standard network LAN for servicing communication protocols and a library, which is connected in front of the operation system kernel, for which applications are sitting at a communication interface. Selection of the communication path between the standard network LAN and the high performance network SAN occurs in a network selection unit integrated with a base library. It is thereby provided that the network selection happens after the communication interface of the library and before access to the operation system kernel. If the network selection happens before access to the operation system, the library can be connected via a communication path with the high performance network SAN, which bypasses the operation system kernel.
摘要:
This invention relates to a stove-enamel coating medium based on at least one binder vehicle selected from amino(meth)acrylate resins and/or epoxide-amine addition products comprising cationic groups and/or groups which can be converted into cationic groups. The binder vehicle additionally comprises cyclic carbonate groups and/or at least one crosslinking agent which comprises cyclic carbonate groups is present, and the binder vehicle also contains secondary amino groups and/or hydroxyl groups.
摘要:
Closed-loop and open-loop systems are used for automated control of the operation of arbitrary systems. An open-loop control apparatus, which controls at least one controlled variable of a system such as a fuel cell system, has a pilot control module and an associated storage module, for storing pilot control characteristic data. The pilot control module carries out pilot control, based on a pilot control value determined from a desired value of the controlled variable from the pilot control characteristic data. A closed-loop control module performs closed-loop control of the controlled variable using a controlled portion determined on the basis of the actual value of the controlled variable. In the open-loop control apparatus, the pilot control value and the controlled portion each make respective contributions to a manipulated variable. An adaptation module matches the pilot control characteristic data in the storage module adaptively during the run time of the open-loop control apparatus.