A study of one gasoline-fueled engine line comparing emission results between 1969 engines and 1979 engines on three test procedures: the heavy-duty transient engine test, the heavy-duty 9-mode engine test, and the light-duty truck chassis test. Technical report

Technical Report · Sun Jul 01 04:00:00 EDT 1979

OSTI ID:6814280

Clemmens, W B; Cox, T P

The 1977 Amendments to the Clean Air Act mandated EPA to set new emission standards for heavy-duty (HD) vehicles or engines for model years 1983 and 1985. These new standards were to represent a percentage reduction 'from the average of the actually measured emission from heavy-duty gasoline-fueled vehicles or engines...manufactured during the baseline model year.' EPA has initiated a testing program to determine the baseline emission levels. The testing program includes multiple transient tests on each baseline engine, during which emissions are measured by the critical flow venturi constant volume sample CFS-CVS technique. Additional testing on each engine includes the current 9-mode certification procedure modified to use the CVS bag procedure.

• Research Organization: Environmental Protection Agency, Ann Arbor, MI (USA)
• OSTI ID: 6814280
• Report Number(s): PB-80-149305
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
330700 -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION
ENERGY CONSUMPTION
ENGINES
EXHAUST GASES
FLUIDS
FUEL CONSUMPTION
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
PERFORMANCE TESTING
POLLUTION
TESTING
TRUCKS
VEHICLES
WASTES