Federal Phase II reformulated gasoline (RFG) has resulted in lower sulfur levels in gasoline, but the rule applies only in selected urban areas in the United States. Reformulated gasoline is gasoline blended to burn more cleanly than conventional gasoline and to reduce ozone and toxic air pollutants. The first phase of the RFG program began in 1995 and the second phase (current) began in 2000. RFG is required in cities with high smog levels and is optional elsewhere. RFG is currently used in 17 states and the District of Columbia, and makes up about 30% of gasoline sold in the U.S. As a result of the National Fuel Policy Act of 1992 and other initiatives, clean fuels have become increasingly available. However, gasoline remains the major fuel product.
On May 1, 2007, EPA finalized the Renewable Fuel Standard (RFS), establishing a comprehensive RFS program for 2007 through 2012 and beyond. In February 2008, EPA amended the RFS to reflect amendment to the Energy Independence and Security Act (EISA) of 2007. EISA increases the overall volume of renewable fuels that must be blended each year, reaching 36 billion gallons in 2022. On March 26, 2010, EPA finalized its RFS-2 regulation for 2010 and beyond. This regulation establishes new specific volume standards for cellulosic biofuel, biomass-based diesel, advanced biofuel, and total renewable fuel that must be used in transportation fuel each year.
Currently, more than 95% of the U.S. gasoline contains up to 10% ethanol to boost octane, meet air quality requirements, or satisfy the RFS. E10 gasoline is sold in every state in the U.S. Recent increases in ethanol usage in gasoline have made E0 and MTBE rare in the U.S. California has moved to require E10 as its LEV III certification fuel, and EPA is considering moving its certification E0 gasoline to E10 or E15, as a part of its Tier 3 proposal. ARB has included both regular and premium certification fuels in their LEV III program, and EPA has indicated that it is planning to do the same as a part of Tier 3.
Federal Phase II reformulated gasoline (RFG) has resulted in lower sulfur levels in gasoline, but the rule applies only in selected urban areas in the United States. Reformulated gasoline is gasoline blended to burn more cleanly than conventional gasoline and to reduce ozone and toxic air pollutants. The first phase of the RFG program began in 1995 and the second phase (current) began in 2000. RFG is required in cities with high smog levels and is optional elsewhere. RFG is currently used in 17 states and the District of Columbia, and makes up about 30% of gasoline sold in the U.S. As a result of the National Fuel Policy Act of 1992 and other initiatives, clean fuels have become increasingly available. However, gasoline remains the major fuel product.
On May 1, 2007, EPA finalized the Renewable Fuel Standard (RFS), establishing a comprehensive RFS program for 2007 through 2012 and beyond. In February 2008, EPA amended the RFS to reflect amendment to the Energy Independence and Security Act (EISA) of 2007. EISA increases the overall volume of renewable fuels that must be blended each year, reaching 36 billion gallons in 2022. On March 26, 2010, EPA finalized its RFS-2 regulation for 2010 and beyond. This regulation establishes new specific volume standards for cellulosic biofuel, biomass-based diesel, advanced biofuel, and total renewable fuel that must be used in transportation fuel each year.
Currently, more than 95% of the U.S. gasoline contains up to 10% ethanol to boost octane, meet air quality requirements, or satisfy the RFS. E10 gasoline is sold in every state in the U.S. Recent increases in ethanol usage in gasoline have made E0 and MTBE rare in the U.S. California has moved to require E10 as its LEV III certification fuel, and EPA is considering moving its certification E0 gasoline to E10 or E15, as a part of its Tier 3 proposal. ARB has included both regular and premium certification fuels in their LEV III program, and EPA has indicated that it is planning to do the same as a part of Tier 3.
การแปล กรุณารอสักครู่..