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The California Air Resources Board (ARB) has extended the
verification for the Rypos DPF/LETRU to cover model year (MY)
2003 transport refrigeration unit (TRU) engines. 

This action was taken in anticipation of ARB’s planned amendment
to the TRU Airborne Toxic Control Measure (ATCM), which will
change the in-use performance standard for MY 2003 engines from
the Ultra-Low Emission TRU (ULETRU) in-use performance standard
to the less stringent Low-Emission TRU (LETRU) in-use standard. 
MY 2003 TRU engines are required to comply with this in-use
standard by December 31, 2010.

The Rypos DPF/LETRU diesel particulate filter reduces diesel
particulate matter emissions at least 50 percent, plus it
complies with the 20 percent NO2 limit, qualifying it as a Level
2 Plus Verified Diesel Emissions Control Strategy (VDECS).  This
verification allows the DPF/LETRU VDECS to be used as a retrofit
compliance option to meet the TRU ATCM’s LETRU in-use standard. 
It can be used on most trailer TRUs using 2003 and older model
year engines.  The Rypos DPF/LETRU consists of active
flow-through filters made out of an electrically conductive
sintered metal fiber medium.  It is microprocessor controlled
with a backpressure control system, an electrical regeneration
control circuit, and a backpressure warning indicator.  TRU
owners should read about the specific terms and conditions for
which the DPF/LETRU has been approved in Executive Order
DE-09-001-01, which will be posted within a few days on the ARB
Verification Procedure - Level 2 website at:
http://www.arb.ca.gov/diesel/verdev/level2/level2.htm.  The list
of engines that can be matched with this filter will also be
posted there as an attachment.


Additional information is available at the Rypos website: 
http://www.rypos.com/