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tru -- ARB approves Huss DPF installation on bobtail TRUs Posted: 28 Sep 2012 09:38:13
The California Air Resources Board has approved Huss LLC’s “kit” for installing their MK-35 and MK-50 diesel particulate filters (DPF) on bobtail transport refrigeration units (TRU). Huss MK series DPFs use active regeneration to burn off the collected diesel soot. This allows the filter to be mounted away from the engine, when necessary. Since there is not enough space in the TRU housing to mount the Huss DPF, a frame-rail mount, under the refrigerated van, was evaluated and approved. This mounting configuration meets all of the conditions in ARB’s verification Executive Order for MK-35 and MK-50 DPFs. Temperatures around the DPF, exhaust tubing, and the integrity of the installation have been monitored and approved. The Huss MK-35 and MK-50 DPFs reduce diesel PM emissions by greater than 85 percent (verified to meet Level 3), which means they can be used as an Ultra-Low-Emission TRU (ULETRU) in-use performance standard compliance option for bobtail TRUs.