federal_register: 01-28856
Data license: Public Domain (U.S. Government data) · Data source: Federal Register API & Regulations.gov API
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| document_number | title | type | abstract | publication_date | pub_year | pub_month | html_url | pdf_url | agency_names | agency_ids | excerpts | regulation_id_numbers |
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| 01-28856 | Nonroad Diesel Emissions Standards Staff Technical Paper | Proposed Rule | When we set the Tier 3 emission standards in 1998, available information indicated that the cooled exhaust gas recirculation (EGR) technology developed for highway diesel engines would be the primary means of compliance with these standards. In conducting our technology review, we have surveyed the recent engineering and scientific literature on advances in diesel emissions control. We have also reviewed information provided by engine manufacturers in support of our 2004 highway standards program, showing the considerable progress they have made in the design of robust EGR systems for use in highway engines. In addition, we have gathered information from engine manufacturers on their design plans for Tier 3 and their testing and development experience with control technologies they are likely to employ. This information shows that cooled EGR is but one of several technologies available to diesel engine manufacturers to meet the Tier 3 emission standards. This widening of technology options comes from the progress of development since 1998, but is also due to the fact that the 1998 final rule envisioned a Tier 3 program more closely aligned with future highway standards, in particular including comparable control of particulate matter (PM), rather than the less demanding set of Tier 3 standards that were actually adopted at the time, and that are the subject of this feasibility assessment. Based on the information we have gathered, we believe that the Tier 3 standards in the regulations on control of emissions from new and in-use nonroad compression-ignition engines are feasible in the timeframe established in the rule. We also believe that the Tier 2 standards for engines under 50 horsepower are likewise feasible, based on certification test data from Tier 1 engines in this power range showing that many of these engines are already meeting the Tier 2 standards. Additionally we stated that as a part of the 2001 Technology Review process, PM standards would be addressed. Given the need for further PM reductions, those will be addressed in a subsequent regulatory action. | 2001-11-20 | 2001 | 11 | https://www.federalregister.gov/documents/2001/11/20/01-28856/nonroad-diesel-emissions-standards-staff-technical-paper | https://www.govinfo.gov/content/pkg/FR-2001-11-20/pdf/01-28856.pdf | Environmental Protection Agency | 145 | When we set the Tier 3 emission standards in 1998, available information indicated that the cooled exhaust gas recirculation (EGR) technology developed for highway diesel engines would be the primary means of compliance with these standards. In... |