Table 4-32b: Federal Exhaust Emissions Certification Standards for Newly Manufactured Gasoline- and Diesel-Powered Heavy-Duty Trucks,,,,,,,,,,,,,,, (Grams per brake horsepower-hour),,,,,,,,,,,,,,, Engine type and pollutant,1970-73 ,1974-78,1979-83,1984 ,1985-86 ,1987,1988-89,1990,1991-93,1994-97,1998-2003,2004 ,2005-2006,2007,2008+ Gasoline,,,,,,,,,,,,,,, HC + NOx,e,16,10,,e,,,,,,,,,, NOx + NMHC,e,,,,,,,,,,,,1.0,,e NMHC,e,,,,,,,,,,,,,,0.14 HC,f,e,1.5,,1.9,,,,,,,,e,, NOx,e,,,,10.6,,,6.0,5.0,,4.0,,e,,0.20 CO,f,40,25,,37.1,,,,,,,,,,14.4 Particulates,e,,,,,,,,,,,,,,0.01 Diesel,,,,,,,,,,,,,,, HC + NOx,e,16,10,e,,,,,,,,,,, HC,f,e,1.5,1.3,,,,,,,,e,,, NOx,e,,,10.7,,,,6.0,5.0,,4.0,e,,0.20, NOx + NMHC,e,,,,,,,,,,,2.4g,,e, NMHC,,,,,,,,,,,,,,0.14, CO,f,40,25,15.5,,,,,,,,,,, Particulates,e,,,,,,0.60 ,,0.25,0.10 ,,,,0.01, Smoke opacity (acceleration/lugging/peak) a,40/20e,20/15/50,,,,,,,,,,,,, Weight criteria for heavy heavy-duty trucks b,"GVWR over 6,000 lbs",,"GVWR over 8,500 lbs",,,"GVWR over 14,000 lbs",,,,,,,,, Test procedure (gasoline) c,13-mode steady-state,,,,MVMA transient,,,,,,,,,, (diesel) c,13-mode steady-state,,,EPA transient,,,,,,,,,,, Useful life (gasoline) d,"5 years/50,000 miles",,,,"8 years/110,000 miles ",,,,,,,"10 years/110,000 miles",,, KEY: CO = carbon monoxide; HC = hydrocarbon; NOx = nitrogen oxides; NMHC = nonmethane hydrocarbons.,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,, "a Smoke opacity is expressed in percentage for acceleration, lugging, and peak modes (acceleration/lugging/peak). Lugging is when a vehicle is carrying a load.",,,,,,,,,,,,,,, b Gross vehicle weight rating (GVWR) is the maximum design loaded weight.,,,,,,,,,,,,,,, "c Several testing procedures have been used during the course of exhaust emissions control. A steady-state 9-mode test procedure (13-mode for diesel) was used for 1970-83 standards. For 1984, either the steady-state tests or the U.S. Environmental Protection Agency (EPA) transient test procedure could be used. For diesels, the EPA transient test was required from 1985 to the present. For gasoline-powered vehicles, either the EPA or the Motor Vehicle Manufacturers Association (MVMA) transient test procedure could be used during 1985-86, and the MVMA procedure was required thereafter. ",,,,,,,,,,,,,,, "d Emissions standards apply to the useful life of the vehicle. Useful life was 5 years/50,000 miles through 1983 and became 8 years/110,000 miles beginning in model year 1985. 1984 was a transitional year in which vehicles could meet the older standard (and test procedure) or the newer one. Useful life requirement for gasoline-powered trucks meeting NOx standards for 1998 and after is 10 years/110,000 miles. Starting in 2004, the useful life will be 10 years/110,000 miles. The useful life requirements for heavy-duty diesel truck standards are more complex and vary by vehicle weight, pollutant, test procedure, and year. Consult the U.S. Code of Federal Regulations for further information. ",,,,,,,,,,,,,,, e No standard set.,,,,,,,,,,,,,,, "f Although emissions standards for HC and CO were in effect for these years, they were not measured in grams per brake horsepower-hour and are, therefore, incompatible with this table. ",,,,,,,,,,,,,,, "g Vehicles can meet a NMHC + NOx standard of 2.5 g/bhp-h, given they meet a NMHC standard of no more than 0.5 g/bhp-h.",,,,,,,,,,,, ,,,,,,,,,,,, NOTES: Tables 4-32a and 4-32b are identical for heavy-duty diesel engines.,,,,,,,,,,,, ,,,,,,,,,,,, SOURCES: ,,,,,,,,,,,, "40 CFR 86, Electronic Code of Federal Regulations, internet site at http://www.access.gpo.gov/nara/cfr/cfrhtml_00/Title_40/40cfr86_00.html as of Oct. 9, 2001. ",,,,,,,,,,,, "U.S. Environmental Protection Agency, Office of Transportation and Air Quality, personnal communication, Oct. 2001. ",,,,,,,,,,,, ,,,,,,,,,,,, ,,,,,,,,,,,,