TAILIEUCHUNG - Control of Air Pollution From Aircraft and Aircraft Engines; Proposed Emission Standards and Test Procedures

Technological improvements might also involve the adoption and use of alternative fuel or alternative propulsion vehicles. In developing countries, the most commonly discussed alternative vehicle strategies include compressed natural gas (CNG), liquefied petroleum gas (LPG), alcohol-based fuels, and electric propulsion or hybrid -electric vehicles in certain applications. Other alternative fuels showing potential long -term promise in the transport sector include hydrogen fuel cells and various synthetic fuels for use in compression-ignition engines. Rate of change of technology in the vehicle fleet. An extensive review of appropriate technologies in the emissions-reduction literature and at conferences can often. | FEDERAL REGISTER Vol. 76 No. 144 Wednesday July 27 2011 Part II Environmental Protection Agency 40 CFR Parts 87 and 1068 Control of Air Pollution From Aircraft and Aircraft Engines Proposed Emission Standards and Test Procedures Proposed Rule 45012 Federal Register Vol. 76 No. 144 Wednesday July 27 2011 Proposed Rules ENVIRONMENTAL PROTECTION AGENCY 40 CFR Parts 87 and 1068 EPA-HQ-OAR-2010-0687 FRL-9437-2 RIN 2060-AO70 Control of Air Pollution From Aircraft and Aircraft Engines Proposed Emission Standards and Test Procedures AGENCY Environmental Protection Agency EPA . ACTION Proposed rule. SUMMARY This action proposes several new NOx emission standards compliance flexibilities and other regulatory requirements for aircraft turbofan or turbojet engines with rated thrusts greater than kilonewtons kN . We also are proposing certain other requirements for gas turbine engines that are subject to exhaust emission standards. First we are proposing to clarify when the emission characteristics of a new turbofan or turbojet engine model have become different enough from its existing parent engine design that it must conform to the most current emission standards. Second we are proposing a new reporting requirement for manufacturers of gas turbine engines that are subject to any exhaust emission standard to provide us with timely and consistent emission-related information. Third and finally we are proposing amendments to aircraft engine test and emissions measurement procedures. EPA actively participated in the United Nation s International Civil Aviation Organization ICAO proceedings in which most of these proposed requirements were first developed. These proposed regulatory requirements have largely been adopted or are actively under consideration by its member states. By adopting such similar standards therefore the United States will maintain consistency with these international efforts. DATES Comments must be received on or before September 26 2011. Hearing The .

• Môi trường
• carefully monitored
• branded generic
• disease programmes
• Neuropsychiatric Manifestations
• AIDS and Trauma
• Cutaneous Manifestation
• Plant Interaction
• Plant Soil
• Microorganism Interactions