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The California Air Resources Board (ARB) has granted full
verification status to the Carrier Transicold Engine Emissions
System (EES) for certain transport refrigeration units (TRU or
reefer) and TRU generator sets (gen sets) with no limits on hours
of accrued operation at time of installation. 

Carrier Transicold has completed all of the remaining
requirements to be fully verified, including the remaining field
demonstrations under worst-case conditions, showing reliable
backpressure control with older, dirtier engines operating in
cold weather at higher elevations.  The Carrier Transicold EES is
a Level 3 Plus diesel emission control strategy that reduces
particulate matter (PM) emissions by at least 85 percent without
increasing nitrogen dioxide emissions more than 20 percent of
total nitrogen oxides.

The Carrier EES is fully verified for use on Carrier X4 7300 and
X4 7500 TRUs, Vector 8500 and 8600MT TRUs, and Carrier UG and RG
TRU gen sets equipped with model year 2012 through 2015 Kubota
model V2203L-DI-EF01e engines rated at less than 25 horsepower.

There is no limit on engine operation at time of installation;
but engines must be maintained in accordance with the engine and
original equipment manufacturer’s specifications.

The Carrier EES uses an automatic filter regeneration system to
oxidize the collected diesel soot and control engine backpressure
to within the engine manufacture’s specifications.  The
regeneration system uses an engine intake air control valve, a
diesel fuel doser, a flameless diesel oxidation catalyst, and a
catalyzed silicon carbide wall-flow filter with an electronic
control unit to achieve reliable backpressure control. 
Double-wall insulation is used to reduce exhaust system component
surface temperatures, providing operator and equipment safety. 
The EES uses commercially available fuel that meets the federal
and California sulfur limits – the same fuel available at all
trucks stops in the U.S.

The terms and conditions for which the Carrier EES has been
approved may be found in ARB’s Executive Order at ARB's
Verification Procedure Website for the Carrier EES at: 
http://www.arb.ca.gov/diesel/verdev/companies/carrier/carrier_ees.htm.
 Additional information about the Carrier EES may be found at
Carrier Transicold’s True Power of Blue webpage.

Level 3 DECS meet the TRU Regulation’s Ultra-Low-Emission TRU
(ULETRU) in-use performance standard. All model year (MY) 2006
and older TRUs and TRU gen set engines must meet ULETRU now.  MY
2007 TRU engines must meet ULETRU by the end of 2014 and MY 2008
engines, by the end of 2015.  Engine repowering will no longer be
a compliance option for MY 2008 engines because replacement
engines that fit and perform are no cleaner than the old in-use
engines being replaced.  Retrofitting with a Level 3 VDECS is a
compliance option that is less costly than replacing the entire
unit.

Where can I get more information?

For general information about the TRU Regulation, the TRU Website
is at:  http://www.arb.ca.gov/diesel/tru/tru.htm

ARB’s Verification Procedure Website is at:
http://www.arb.ca.gov/diesel/verdev/verdev.htm

If you have questions about TRU compliance or registration in
ARBER, please call the TRU Help Line at 1-888-878-2826 or call
1-916-327-8737.

Background:  TRUs are refrigeration systems powered by integral
diesel internal combustion engines designed to control the
environment of temperature-sensitive products that are
transported in trucks, trailers, shipping containers, and
railcars.  The emissions from these units are a source of
unhealthful air pollutants including particulate matter, toxic
air contaminants, nitrogen oxides, carbon monoxide, and
hydrocarbons, that all pose a potential threat to both public
health and the environment. These units often congregate in large
numbers at California distribution centers, grocery stores, and
other facilities where they run for extended periods of time to
ensure their perishable contents remain cold or frozen. These
distribution and loading facilities are often in close proximity
to schools, hospitals, and residential neighborhoods.  In 2004,
the TRU Airborne Toxic Control Measure (ATCM) was adopted by the
Board to reduce diesel particulate matter emissions from TRUs and
TRU gen set engines.  Amendments were adopted by the Board in
November 2010 and October 2011.



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