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

Carrier Transicold has completed all of the requirements to be
fully verified, including extensive field demonstrations under
worst-case conditions, showing reliable backpressure control with
older, dirtier engines operating in cold weather at higher
elevations.  The Carrier Legacy 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 Legacy EES is fully verified for use on Carrier
X2-Series, XT-Series, XTC-series, Genesis TM900, Genesis TM1000,
Ultra XL (with and without standby), Vector 6500, and Vector
6600MT TRUs equipped with model year 2004 through 2012 Kubota
engines, as listed on the Engine Family List for the Carrier
Legacy EES at ARB's Verification Procedure Website for the
Carrier Legacy EES at: 
http://www.arb.ca.gov/diesel/verdev/companies/carrier/carrier_legacy-ees.htm.

There is no limit on engine operation at time of installation;
but engines must be maintained in accordance with the engine and
original equipment manufacturers’ specifications and meet all of
the pre-installation compatibility assessment criteria
established for the Carrier Legacy EES.

The Carrier Legacy 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 Legacy 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 Legacy EES has
been approved may be found in ARB’s Executive Order at ARB's
Verification Procedure Webpage for the Carrier Legacy EES at: 
http://www.arb.ca.gov/diesel/verdev/companies/carrier/carrier_legacy-ees.htm.
 


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