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SUDHIR

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Product Code : 52 Brand Name :Sudhir Gensets

Product Specification

Environmental
Protection Agency (EPA) have moved
up, the mandated emission reductions
for most diesel engines have moved
dramatically lower, especially in 2011
with the Tier 4 interim standards
taking effect. It is understandable that
many people would conclude that the
highest possible tier is preferable for all
applications. But it’s not that simple, as
the EPA (website: http://www.epa.gov)
itself has recognized. In choosing the
appropriate EPA tier, it is important to
consider the application and to choose
the right technology for the job.
Background
Exhaust emissions from diesel engines have
been reduced exponentially since 1996, when
the fi rst U.S. rules for stationary equipment
were implemented. The power generation
industry has made great strides in reducing
emissions to meet these requirements.
The development of EPA
emission standards
The current phase of the EPA requirements for
many stationary non-emergency and nonroad
diesel engines is Tier 4 interim, or Tier 4i,
which mandates substantial reductions in
certain pollutants, especially particulate matter
(PM) and oxides of nitrogen (NOx).
Figure 2 shows how the EPA emission
standards are applied. Notice that there
Figure 1 - This chart illustrates the dramatic emissions
reductions mandated by Tier 4 phases relative to previous
stages of emissions reduction.
Choosing the right emission standard
and the right technology for emergency
standby power systems:
EPA tiers, emissions and reliability in emergency
standby power systems

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