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arbcombo -- Full verification of Carrier EES diesel particulate filter for TRUs (reefers) and TRU generator sets

Posted: 29 Apr 2014 08:38:35
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.

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: 

Verified Level 3 DECS meet the TRU Regulation’s
Ultra-Low-Emission TRU (ULETRU) in-use performance standard. The
compliance deadline for the ULETRU in-use standard for model year
(MY) 2006 TRUs and TRU gen set engines was December 31, 2013.  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

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:

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

California is in a drought emergency.
Visit www.SaveOurH2O.org for water conservation tips.

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