摘要:
A heart pump and a catheter assembly therefor are provided that include a flexible catheter body having a proximal end and a distal end, the catheter body having a plurality of lumens therethrough. The catheter body can be sufficiently flexible to extend from a peripheral access to a patient's heart. The catheter assembly can also include an impeller assembly having an impeller and a housing. The impeller assembly can be coupled with the flexible catheter body such that a tensile force applied to opposite ends of the catheter assembly enhances the security of the connection between the catheter body and the impeller assembly.
摘要:
The invention concerns a device for producing polymer pellets, extruded profiles or mouldings, comprising an extruder for producing a polymer melt, comprising a melt pump (2) for building up pressure for the purpose of forcing the polymer melt through a die and comprising the die for creating the pellet, the extruded profile or the moulding, wherein the melt pump (2) is formed separately from the extruder and has a drive (5) of its own. Providing such a device for producing polymer pellets, extruded profiles or mouldings in which the extruder does not need a pressure increasing unit is achieved by the transfer of the polymer melt from the extruder to the melt pump (2) taking place in a pressureless or almost pressureless manner.
摘要:
A hydrogen G-cycle rotary vane internal combustion engine has a sodium vapor chamber transferring excess combustion heat into combustion chambers. An active water cooling system captures heat from the engine housing stator, rotor, and sliding vanes and transfers it back into the combustion cycle by premixing it with hydrogen to reduce peak combustion temperature and with an early an late stage combustion chamber injection to help transfer heat from the sodium vapor chamber, to control chamber temperature, and to increase chamber vapor pressure. A combustion chamber sealing system includes axial seals between the rotor and the stator, vane face seals, and toggling split vane seals between the outer perimeters of the sliding vanes and the stator. Sliding vanes reciprocate laterally in and out of the rotor assisted by a vane belting system. A thermal barrier coating minimizes heat transfer and thermal deformation. Solid lubricants provide high temperature lubrication and durability.
摘要:
SCR system for treating the exhaust gases of an internal combustion engine, this systemcomprising a line for feeding the urea solution into the exhaust gases and a pump capable both of feeding the urea solution into said exhaust gases and of purging at least one part of the line by sucking a gas therethrough by means of a suction device, this system also comprising a control unit capable of activating and/or deactivating the operation of the pump and that of the suction device in a sequential manner in the course of one and the same purge procedure.