摘要:
An electrically conductive composition and method for making same is disclosed. The composition includes a uniform mixture of electrically conductive particles comprising pyrolytic carbon doped or coated with a component taken from Group III-VIII elements of the Periodic Table and a curable, non-conducting polymer binder.
摘要:
Method for producing an electrically conductive and solderable structure along with the resulting article are disclosed. The method comprises admixing metal particles, metal salts and an organic polymer binder as a paste which is applied to a non-conductive substrate by printing or the like. The paste is heated to permit metal salts to migrate to the surface of the binder where they become concentrated. During metallizing the salts are removed by the bath and metal is deposited in pores formed in the binder by the dissolved salts. The metal layer is adherent to the binder and provides good solderable points.
摘要:
Paste composition for producing an electrically conductive and solderable structure along with the resulting article are disclosed. Metal particles, metal salts and an organic polymer binder are formed into a paste which is applied to a non-conductive substrate by printing or the like. The paste is heated to permit metal salts to migrate to the surface of the binder where they become concentrated. During metallizing the salts are removed by the bath and metal is deposited in pores formed in the binder by the dissolved salts. The metal layer is adherent to the binder and provides good solderable points.
摘要:
The disclosure is of a substrate or supporting board for supporting printedircuits and the method of its manufacture. The boards of the invention are preferably made of a high-temperature resistant thermoplastic, sensitized to receive a printed circuit element by the dispersion of coated iron or copper particles in the thermoplastic matrix. The coating is a bonding assistant.
摘要:
A system and method for recovering energy from gases of an internal combustion engine in conjunction with exhaust gas recirculation is described and illustrated, and in some embodiments includes an exhaust gas recirculation valve and an exhaust gas recirculation heat exchanger, with a working medium which undergoes a cyclic process being evaporated in the exhaust gas recirculation heat exchanger by hot exhaust gases, and with resulting steam being converted into mechanical or electrical energy which is available as additional energy. To improve heat recovery with little technical expenditure, an exhaust gas control valve can interact with the exhaust gas recirculation heat exchanger, and can control the mass flow of exhaust gases flowing through the exhaust gas recirculation heat exchanger constantly in all operating phases of the internal combustion engine, approximately in the vicinity of the performance limit of energy recovery.
摘要:
A heat exchange arrangement for a vehicle has at least two heat exchangers exposed to the action of ambient air. One of the heat exchanger is coolant cooler and the other one is a charge-air coolant. Each of these coolers has tubes through which liquid or gas flows and heat dissipating ribs connected to the tubes. The coolant cooler is positioned upstream of the charge-air cooler in the air-flow direction. The charge-air cooler has an overlapping region in which the coolant cooler and the charge-air cooler overlap one another and a non-overlapping region in which the coolant cooler projects substantially perpendicularly to the cooling air flow direction. The non-overlapping region is formed at least in the charge-air outlet region and is cooled directly by ambient cooling air. The overlapping region is cooled by the ambient cooling air that has passed through the coolant cooler, which is positioned immediately upstream of the overlapping region of the charge-air cooler.
摘要:
A heat exchanger plate for an evaporator includes a flow transverse distribution device. Disks of the flow transverse distribution device conduct the medium to be evaporated to the flow channel extending in the direction of the longitudinal axis. The disks include openings allowing a flow of the medium in the direction of the longitudinal axis with comparatively higher flow resistance than in the direction of the transverse axis. The number of disks arranged one behind the other in the direction of the longitudinal axis varies over the width of the heat exchanger plate in the direction of the transverse axis. On each width section, in which the entry of the medium into the disks arranged one behind the other is intended, the comparatively largest number of disks is provided one behind the other. As the distance from the entrance increases, the number decreases in the direction of the transverse axis.
摘要:
A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.
摘要:
A heat exchanger including a plurality of longitudinal flat tubes stacked together with space between the broad sides of adjacent tubes, and inlet and outlet collecting tanks. The inlet collecting tank distributes a first medium into the tubes, and has a wall extending around the periphery of one end the stack of flat tubes over a selected longitudinal section, the wall having at least one of an inlet and outlet for a second medium distributed in the space between the stacked tubes. The outlet collecting tank receives the first medium from the tubes. Longitudinal internal inserts in the flat tubes are metallically connected to the broad sides of the associated flat tube. At least one row of cutouts is between the longitudinal ends of the internal inserts and in the selected longitudinal section, with the row of cutouts extending substantially across the broad width of the insert.
摘要:
The invention relates to a device for driving a coolant pump (2) for the coolant circuit of an internal combustion engine in a motor vehicle comprising a drive train that encompasses a drive wheel (7), a viscous coupling (11), and a drive shaft (3). The inventive driving device is provided with a second coupling (15) which is embodied as a clutch and can be connected to the drive train parallel to the viscous coupling (11), resulting in increased redundancy and two-step rev control.