Yanmar America Introduces Workboat Diesel Range

By Keith Henderson at January 12, 2012 04:16
Filed Under: Company News

Yanmar America Corporation of Adairsville, Georgia, is introducing a number of commercial engines to the North and South American markets for propulsion and auxiliary applications. The high-speed diesel engines are ideally suited to workboat and other commercial vessels in the power range of 360 hp (265 kW) to 1,822 hp (1340 kW) segment. Four power ratings: small, low, medium and high (usage), cover the commercial range engines and ensures a good match to operating profiles.


Caption: The six cylinder 6AY series of 20.3 liters is offered in the power range of
659 hp (485 kW) at 1,900 rpm to 911 hp at (670 kW) 1,938 rpm.
Image credit: Yanmar America Corporation

The engines are compliant with latest IMO Tier II emissions regulations and they have type approval from six major classification societies. The engines have already been available in Japan and certain Asian markets for commercial applications ranging from offshore support vessels to fishing craft, ferries, tugs and other workboats and  a number are already operating in Panama for workboats, and in Venezuela and Trinidad in the offshore oil industry.

The commercial range covers one V12 engine and three in-line six cylinder engine series:

The 12AY series displaces 40 liter and is offered with H ratings of 1,200 hp (883 kW) at 1,850 rpm, 1,400 hp (1030 kW) at 1,900 rpm and 1,550 hp (1140 kW) at 1,840 rpm. There is a M rating of 1,659 hp (1220 kW) at 1,900 rpm and there is an L rating of 1,822 hp (1340 kW) at 1940 rpm.

The six cylinder 6AY series of 20.3 liters is offered in two H ratings of 659 hp (485 kW) at 1,900 rpm and 755hp (555 kW) at 1,840rpm. There is a M rating of 829 hp (610 kW) at 1,900 rpm and a L rating of 911 hp at (670 kW) 1,938 rpm. 

A 13.7 liter displacement 6HY series engine has a H rating of 500 hp (378 kW) at 1,950 rpm, a M rating of 600 hp (441 kW) at 2,100 rpm, a L rating of 650 hp (478 kW) at 2,150 rpm, and a S rating of 700 hp (515 kW) at 2,200 rpm.

The smallest six cylinder engine is the 7.4 liter 6CXB series. It is available with a H rating of 360 hp (265 kW) at 2,400 rpm, a M rating of 400 hp (294 kW) at 2,500 rpm, a L rating of 464 hp (341 kW) at 2,700 rpm, and a S rating of 509 hp (374 kW) at 2,700 rpm.

The rating definitions are as follows. H (High) rating means that engine is suitable for applications that run 24 continuous operation hours or below with a typical total operation hours of 3000-4000 hours per year (up to 80% a year). M (Medium) rating means that engine is suitable for applications that run 10 continuous operation hours or below with a typical total operation hours of 2000-3000 hours a year (up to 60% a year). L (Low) rating means that engine is suitable for applications that run 2 continuous operation hours or below with a typical total operation hours of 1000-2000 hours a year (up to 40% a year). S (Small) rating means that engine is suitable for applications that run 30 continuous operation minutes or below with a typical total operation hours of 500-1000 hours a year (up to 30% a year).

 

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