2
مکانیک::
گذرگاه
The active (noble metal) catalyst material is impregnated into a highly porous alumina washcoat about 20 gva thick that is applied to the passageway walls.
The typical monolith has square-cross-section passageways with inside dimensions of ~1 mm separated by thin (0.15 to 0.3 mm) porous walls.
The number of passageways per square centimeter varies between about 30 and 60.
The gas flow is turbulent which results in high mass-transfer rates; in the monolith catalyst passageways, it is laminar.
The prechamber is connected to the main combustion chamber above the piston via a nozzle, passageway, or one or more orifices (see Secs. 1.8, 8.5, and 10.2.2).
واژگان شبکه مترجمین ایران