Page 66: of Maritime Reporter Magazine (September 2015)

PRODUCT FEATURES

Tenneco: Large Engine SCR System enneco was awarded three prod- able propulsion and auxiliary engines to E2 cycle, when one of the engines was The ? uid delivery system with dosing uct design assessment (PDA) meet EPA Tier IV and IMO Tier III regu- out? tted with the after treatment system, control software is capable of managing

Tcerti? cates from the American latory requirements and provide precise the engine met all criteria for IMO Tier multiple injection points and sensors.

Bureau of Shipping for its new selec- and reliable delivery of liquid urea via III including NOx and SOx. In 2015, ad- The system can support urea ? ows up tive catalytic reduction (SCR) system a proprietary, high-performance injec- ditional ? eld tests are currently under- to 120 meters, which enables a wide ar- for large engines. The PDA certi? cates tor design, a precision mechatronic ? uid way on a similar training vessel in the ray of installation options. Airless urea cover key components of the system, in- delivery pump and customizable remote Gulf of Mexico powered by the same injection provides high dosing accuracy cluding the complete dosing and control monitoring and controls. type of engines. and consistency without the need for system, injectors, load sensors and the In the past year, the company has con- designated compressed air.

human machine interface (HMI) remote ducted a series of ? eld tests to demon- SCR System Features The system’s Human Machine Inter- monitor, as well as catalyst and reactor strate how the system’s form, ? t, func- The SCR system’s modular design en- face (HMI) can be accessed on the front hardware con? gurations for both EPA tion and performance capabilities can be ables seamless integration for a broad of the ? uid delivery box or remotely via and IMO applications. integrated into a vessel’s engine and con- range of engine sizes and works with a touch screen tablet. It features an easy-

Tenneco’s SCR after treatment system trol architecture. Field tests were con- electrically or mechanically controlled to-use interface to access onboard diag- features a complete dosing control so- ducted in 2014 on a 224 ft. Great Lakes engines. It has been validated for du- nostic functions and to monitor all sys- lution speci? cally designed for marine training vessel powered by four 800 hp, rability and all components are easy to tem parameters including but not limited engine applications up to 7,500 kW or circa 1984 Tier 0 engines. In a series of maintain and service without the need to NOx reduction performance and urea 10,000 hp. The system is designed to en- validation tests, including the ISO 8178 for special tools. concentration levels in real time.

TS General Rudder is powered by four, 1982 Caterpillar 800 hp, tier 0 diesel engines.

66 Maritime Reporter & Engineering News • SEPTEMBER 2015

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