Diesel Progress North American

compliance deadline, but Harco’s silencing expertise will enable us to provide even more support. Besides the advantage of new product innovation, we can offer customers a greater East and West Coast presence and the benefit of expanded distribution.”

Miratech said it continues to develop its Ground Access catalyst designs, integrated catalyst silencers for engines greater than 1500 hp that enable catalyst access at ground level. The freestanding, vertical configuration ground access units are engineered to meet wind load and seismic rating requirements and incorporate slide-in tracks for easy catalyst element insertion and removal at ground level.

Miratech’s Ground Access
catalysts are designed to
provide catalyst access at
ground level.

The Ground Access modules also incorporate Miratech’s Vortex catalyst, which is designed to deliver turbulent exhaust gas flow within the catalyst, which enhances catalyst performance and durability, the company said.

Miratech said it has also extended its Z-Flow line of integrated catalyst silencers for engines from 1200 to 4500 hp. The Z-Flow line is engi-

neered to provide low pressure drop and noise reduction at super-critical grades, the company said.

Miratech also announced upgrades to its manufacturing site that are intended to result in faster turn-around times. Engineering staff expansions have also continued, the company said.

Nett Technologies has recently completed development of the latest addition to its BlueMAX SCR system. The new BlueMAX NOVA 350 SCR/HCI-DPF system has an SCR system for diesel NOx control with an active DPF for particulate matter reduction. The BlueMAX NOVA also incorporates hydrocarbon injection (HCI) as an active regeneration strategy designed to burn off the trapped particulate emissions, preventing filter clogging in low-temperature applications.

The BlueMAX NOVA 350 system has been specifically designed for stationary applications such as generators or compressors. Field trials are currently under way on port gantry cranes used for loading/unload-ing container ships. BlueMAX NOVA systems will also be available for off-road and on-road mobile applications, the company said.

Nett’s family of BlueMAX SCR systems utilizes urea as the reducing agent and a sensor-based control strategy to reduce NOx emissions by up to 85%, the company said. Various active regeneration strategies are employed in the company’s Vorteq and ExoCOR DPFs, making them suitable for low-temperature applications. The active and passive DPFs are designed to offer up to 95% PM reduction utilizing either cordierite or silicon carbide monoliths, the company said.

Nett offers a wide product line as direct-fit designs that are each engineered to fit a specific application, which is intended to simplify installation and allow under-hood placement.

50 DIESEL PROGRESS NORTH AMERICAN EDITION February 2012

DPNA138.indd 8

Direct-fit designs also mean that equipment appearance and operator sight lines are unchanged when retrofitting an emissions control device, Nett said.

Rypos announced late last year that the California Air Resources Board (CARB) has verified the Rypos DPF Ultra-Low-Emission TRU (ULETRU) CARB Level 3+ DPF for use on Carrier and ThermoKing TRUs using 2003 and newer model-year engines. The Rypos DPF/ ULETRU is an active, electronically regenerating diesel exhaust filter system that can replace the standard muffler. It is engineered to operate without requiring engine shutdown and minimal maintenance is required, Rypos said.

The Rypos DPF/ULETRU system is designed to reduce particulate matter by 85% in TRU applications. With the verification, it can now be used to comply with CARB’s ULETRU In-Use Performance Standard, Rypos said.

Rypos’ active DPF emissions filtration systems are available in cylindrical, “ flat-pack” and modular designs.

For Tier 4, Rypos said its active emissions reduction technology is packaged in a simple, compact design that offers full compliance without the issues of managing multiple systems from multiple suppliers. The system can be populated with just one reduction technology (SCR, DPF or DOC) while allowing for ease of installation when either or both of the remaining requirements are needed, the company said.