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目前,随着大家对环境污染的重视,各国汽车发动机的排放法规也日益严格,排气再循环和涡轮增压作为两种重要的机内净化手段,对发动机的排放控制具有显著意义。本文以CNABS数据库和SIPOABS数据库中的检索结果为样本,从专利角度出发,对涉及涡轮增压的排气再循环的专利文献进行了分析,重点通过主要国家、主要申请人的分析,展示增压发动机中排气再循环专利技术的地域分布、发展趋势。
At present, as everybody attaches importance to environmental pollution, the emission regulations of automobile engines in various countries are also increasingly stringent. Exhaust gas recirculation and turbocharger are two important in-house purification measures, which have significant significance on engine emission control. In this paper, the CNABS database and SIPOABS database retrieval results as a sample, from the patent point of view, the turbocharged exhaust gas recirculation patent literature was analyzed, focusing on major countries, the main applicant analysis, display booster Geographical distribution and development trend of patented exhaust gas recirculation technology in engine.