37
So what this means, in efect,
that by 2025, cars and light-
duty trucks will both have a feet
average by 2025 of what is today's
Tier 2, Bin 2.
Oh, and it gets even more inter-
esting. Jackson explains that the
frst 90 seconds of the federal
test cycle are the most crucial: "If
you don't get the after-treatment
up and running and to the
temperature where it is removing
the criteria pollutants, it is all
going to be over in the frst 75
to 90 seconds of the Federal test
protocol, because you will already
have blown through the limit.
Even if you ran at zero emissions
for the rest of the 30-minute test
cycle, it's over." He says, "Bag Zero
and Bag One are absolutely critical
under the Tier 3 legislation."
One more thing: while the current
regulation calls for an emissions
warranty of 120,000 miles, that
goes up to 150,000 miles. In model
year 2017.
Recognize that these tail-pipe
emissions requirements are
independent of the fuel efciency
requirements.
Jackson points out, "Tier 3
vehicles are going to be so
clean that if you drive them in
an area like Chicago, Detroit or
Los Angeles, the air coming out
of the tail pipe is going to be
cleaner than the air going into
the vehicle's air cleaner." Electric
vehicles, he points out, are not
as environmentally benefcial:
"If you are driving an electric
vehicle, you're not helping to
clean the air like you are with an
0714ADP FEATURE Tennoco -- Digital Version.indd 37 6/17/2014 1:10:59 PM