英国GKN公司最近研制出一种可以取代催化转换器中陶瓷元件的金属衬底——Emitec。这种金属衬底已引起了柴油机制造业的浓厚兴趣。其特点是它能在高温下工作,从而使催化转换器可以紧靠发动机安置。这样可以减少冷起动后的临界“加热”时间,降低排放。采用金属材料还可使衬底截面变薄,在转换性能相同时催化器的尺寸相对减小。 GKN公司关于Emitec下一步的研究重点是改进内金属片的波纹成型工艺,改善转换性能、降低系统背压,减少材料消耗和降低生产成本。为了减少冷起动时的排放和满足美国新型低排放车辆(LEVs)和特低排放 British GKN company recently developed a kind of metal substrate can replace the catalytic converter ceramic substrate - Emitec. This metal substrate has aroused great interest in the diesel engine manufacturing industry. It is characterized by its ability to operate at high temperatures so that the catalytic converter can be placed close to the engine. This reduces the critical “warm-up” time after a cold start and reduces emissions. The use of metal materials can also make the substrate thin section, the same conversion performance when the catalyst size is relatively reduced. GKN’s next study on Emitec focused on improving the corrugated sheet metal forming process, improving conversion performance, reducing system backpressure, reducing material consumption, and reducing manufacturing costs. In order to reduce emissions at cold start-up and to meet new low-emission vehicles (LEVs) and extra-low emissions