In this case the Stakeholder meeting presented the plan for the future of RGGI that includes
tightening the emissions restrictions, extending the program beyond 2020, and tweaking some of the program elements.
In January 1994, due to
tightening emissions restrictions, Nissan switched to a lowport design, in which the injectors and fuel rail switched places with the intake plenum.
Not exact matches
Pontiac offered the 455 through the 1976 model year, but the engine could not meet
tightening restrictions on vehicle
emissions.
The company is studying what to do with other older coal - fired units in light of the soot regulations,
tightening restrictions on the disposal of coal ash and new limits on
emissions of mercury and other toxics that are pending.