Cummins: Ready for 2013 & EPA Tier 3 Standards

press release
Friday, January 04, 2013
The QSK50 EPA Tier 3 engine.

With a reputation built on reliability, Cummins Marine does extensive testing before releasing a new engine to the market.


The QSK50 EPA Tier 3 engines have been put through many hours of test bed operation at the Cummins factory. However Cummins believes that the real test of a marine engine is in marine operating conditions. With a need for frequent increase and decrease in power demand, push boats working the US inland water system are a particularly demanding application. One moment, while working around a down river bend, the engines may be idling while a few minutes later full power may be demanded to push a heavy tow on down the river. Backing power becomes important when working a tow off a fleeting area. Fluctuating power demands and frequent shifting put a new engine to the test.

It was with this demanding service-cycle in mind that the engineers at Cummins Marine choose the 105 by 32-foot towboat Eugenie, belonging to Houma-based Enterprise Marine Towing, for field-testing of the new Tier 3 compliant engines. Each 50-liter 16-cylinder engine produces 1800 HP at 1800 RPM. The installation saw the engines fitted to the existing Reinjest WAF-762 gears with 1:5.913 ratios. The new engines replaced a pair of Cummins 1600 HP QSK50 Tier 2 engines with only two minor alterations. To take advantage of the increased power, the propellers were changed, from 78-inch diameter with 68-inch pitch, to 80 by 60-inch props. In the engine room, since the new QSK50 T3 has the turbo chargers installed  in the top center of the engine instead of the rear of the engine as is on previous QSK50 T, the exhaust connection was moved 621 mm horizontally.

The US Environmental Protection Agency required that engines with 2.5 to 3.5 liters displacement per cylinder should achieve the stringent Tier 3 standards January 1, 2013. At 50 liters the 16-cylinder QSK50-M1 engine has 3.25 liters of displacement per cylinder. The EPA Tier 3 standard requires a 50% reduction in particulate matter (PM) and a 20% reduction in NOx compared to existing Tier 2 standards. The Tier 2 requirements apply to the popular Cummins QSK38 also.Cummins engineers achieved this standard with the established common rail fuel injection, newly designed single piece piston and high-efficiency turbo-charger and after-cooling among other refinements.

The engines were installed on August 26, 2012 and by mid-December had performed for approximately 1720 hours. As field-test engines they are closely monitored by Cummins engineers. Cummins Application Engineer John Echavarria says of the engines’ performance, “During this time no significant issues were reported. All coolant, fuel, lube, electric and mounting connections for the QSK50 Tier 3 are the same as they were for the Tier 2 engines.“
The field-testing of these engines is one more step in the continuing efforts by Cummins to maintain the high level of reliability that they have earned over the decades while meeting ever more stringent environmental standards.

Maritime Today

The Maritime Industry's original and most viewed E-News Service

Maritime Reporter May 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Ship Repair & Conversion

Mermaid Maritime Bags Subsea Contracts, Delays Newbuilding

Thailand’s Mermaid Maritime said it has been awarded a number of subsea contracts in the Middle East with a total worth of $11million.   It has also reached

Hansa Offenburg, Hansa Drakenburg Sail Scale-free

Leonhardt & Blumberg was founded in 1903 and has managed more than 180 vessels, the majority of which were general cargo vessels and bulk carriers. Today the company

Haven Marine Signs Service Contract with Svitzer

Haven Marine Services informs it has signed a five year contract with Svitzer which will see the yard service the requirements of Svitzer’s vessels within the Bristol Channel and Irish Sea areas.


Bay Shipbuilding Delivers ATB to Moran

Fincantieri Marine Group’s Fincantieri Bay Shipbuilding (FBS) has delivered the Articulated Tug Barge unit (ATB) Barbara Carol Ann Moran and the 110,000-barrel

Tech & Design Solutions for Modern Workboats

EPA Tier 4 regulations (for engines of 804 hp and higher) and propulsion advancements have many manufacturers and vessel designers changing course to adapt to new requirements and customer demands.

Seacat Services Secures Burbo Bank Charter Deal

DONG Energy has awarded  offshore energy support vessel operator Seacat Services with the supply contract for all crew transfer services at its 258MW Burbo Bank


US Navy Updated Zika Virus Infection Guidance

Navy Medicine released updated Zika Virus Infection guidance in NAVADMIN 121/16, May 26, communicating current information, travel precautions, and risk reduction

Seaspan Acquires Eighth 14000 TEU Vessel

Seaspan Corporation (NYSE:SSW) announced today that it accepted delivery of a 14000 TEU containership, the YM Width. The new containership, which was constructed at CSBC Corporation,

GloMEEP Project Forges Ahead with Train-the-Trainer Workshop

A global Train-the-Trainer workshop on energy efficiency has been delivered in China (23-27 May), preparing the personnel needed to cascade knowledge on energy

Fuels & Lubes

WSS: Post-combustion Fuel Treatment Cuts Vessel Costs, Risk

Wilhelmsen Ships Service, a provider of products and services to the shipping industry, is advising vessel operators to wage war on soot. According to WSS, soot

EGAS: Egypt to tender for 10 LNG Cargoes

Egypt will tender next week to import 10 cargoes of liquefied natural gas (LNG) for delivery in July and August, an official from the state gas company, EGAS, said on Thursday.

ABB Saves 700,000 tons Fuel for Marine Vessels

ABB’s environmental friendly Azipod propulsion system brings greater fuel efficiency to diverse shipping segments ABB today announced the total fuel savings

Marine Power

Wärtsilä Electrical Systems for SIEM RoRo Ferries

Wärtsilä has been awarded the contract to provide integrated turnkey electrical solutions for four new RoRo ferries being built at the Flensburger Schiffbau-Gesellschaft (FSG) yard in Germany.

MAN 28/33D STC Engines for Thai Navy’s New OPV

The Royal Thai Navy has ordered a new 90-m offshore patrol vessel (OPV) to be constructed at Mahidol Adulyadej naval dockyard in Sattahip.  The newbuilding, an improved River-class design,

Norsafe Debuts New RIB in Gothenburg

Norsafe has released its first RIB, the Marathon 900, to compliment its range of boat models for professional and military customers.  Launched at High Speed

Government Update

1,076 Graduate from U.S. Naval Academy

The U.S. Naval Academy graduated 1,076 men and women at the annual graduation and commissioning ceremony May 27 at Navy-Marine Corps Memorial Stadium. U.S. Naval Academy Superintendent Vice Adm.

Details El Faro's Sinking Emerge from US Probe

U.S. investigators on Friday concluded two weeks of hearings into the sinking of cargo ship El Faro in a hurricane last fall that included reports the vessel had

Defense Appropriations Bill Includes $1 Bln for US Icebreaker

The U.S. Senate Appropriations Committee’s FY2017 Defense Appropriations Bill has included $1 billion in funding to accelerate construction of a new polar icebreaker for the U.

Maritime Contracts Navigation Offshore Oil Pipelines Pod Propulsion Port Authority Salvage Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0759 sec (13 req/sec)