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首页> 美国政府科技报告 >Control of Emissions from Marine SI and Small SI Engines, Vessels, and Equipment. Summary and Analysis of Comments.
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Control of Emissions from Marine SI and Small SI Engines, Vessels, and Equipment. Summary and Analysis of Comments.

机译：控制海洋sI和小型sI发动机，船舶和设备的排放。评论摘要和分析。

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EMA commented that it has been an active participant in the development of the NPRM for the next-phase Small SI engine standards. Specifically, EMA has worked to help EPA staff determine: (i) the most effective exhaust emission control technologies that could be applied to Small SI engines; (ii) the most effective evaporative emission control technologies that could be applied to Small SI engines and the equipment that they power; (iii) limitations on the applicability of such emission control technologies to Small SI engines and the equipment that these engines power; and (iv) the optimized timeline for deploying the available emission control technologies into the marketplace. The net result of that collaborative process is an NPRM that truly and properly reflects the maximum achievable emission reductions for Small SI engines and the equipment that they power. In that regard, EMA greatly appreciates the time and effort that have gone into the development of the pending rulemaking -- a rule-making that has set forth extremely challenging and dramatic, but nonetheless potentially achievable, emission reduction targets. Indeed, the effort that has gone into this collaborative rule-making has resulted in the promulgation of an overall framework of technology-forcing standards and accompanying regulations that are at the very limit of feasibility and implementability. As a consequence, that overall framework needs to be maintained in any final rule that results from the NPRM, since any potential increased stringency of the proposed standards or the overall regulatory program would necessarily result in an infeasible and non-implementable rule. EMA continued to comment that the NPRM properly recognizes the inherent constraints on the transfer of advanced exhaust emission control systems to Small SI engines, and appropriately limits the efficiency of the required aftertreatment to achieve the proposed standards to those levels that can be effectively implemented taking into consideration, among other things, noise and safety.

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