Deutz MWM Diesel Engine Series Offer Distinct Advantages For Passenger Boat Propulsion
—Detailed Literature Available— The trade name Deutz MWM not only represents medium and large diesel engines for the marine market, but also compact, high-speed units covering lower power ranges. The range of Deutz MWM passenger boat propulsion engines includes extremely compact, highand medium-speed diesel units.
These engines are light weight, compact and smooth-running, combining fuel economy and environmental compatibility. Four engine series are available covering a power range from 20 to 3,470 kw (27 to 4,720 hp).
The lower end of the power range, 20 to 150 kw (27-204 hp), is represented by the 226B Series engines.
They are available in two-, three-, four- and six-cylinder versions, whose maximum cylinder power is between 18 and 25 kw, depending on whether the engine is a naturally aspirated or turbocharged unit with or without charge air cooling. The diesels are rated for speeds between 1,500 and 2,500 rpm.
Powers up to 1,800 kw (2,448 hp) are covered by twin-engine installations consisting of 234 Series engines rated for 100 to 900 kw (136 to 1,224 hp) each at speeds between 1,500 and 2,300 rpm. The 234 Series includes engines in Vee configurations with six, eight, 12 and 16 cylinders. Their best weight per unit power value in maritime duty is as low as 2.5 kg/kw (1.84 kg/hp), while the power per unit volume is around 400 kw/cu.m (544 hp/cu.m).
The compact series 604B highspeed engines represent the next higher power class, with ratings up to 4,000 kw (5,440 hp). Introduced in 1985, these engines have performed very well, particularly as propulsion units for fast ships. Their power range extends from 420 to 1,935 kw (570 to 2,630 hp) at speeds from 1,000 to 1,800 rpm. The optimal fuel consumption is as low as 190 g/kwh (140 g/hph). A simple throttle-plate control provides for optimal intake-air supply of the four-valve cylinder heads, thus ensuring clean fuel-efficient combustion over a wide speed range, even under part-load condition.
For passenger boat propulsion, the Deutz MWM product line is topped by medium-speed diesel engines highlighted by economy and smooth-running characteristics. For example, more than 1,000 628 Series engines have been sold, with about 60 percent of these for marine main propulsion or auxiliary sets. The current power range covered by the 628 Series, which are offered in six-, eight-and nine-cylinder in-line versions and 12- and 16-cylinder Vtypes, extends from 755 to 3,470 kw (1,027 to 4,720 hp) at speeds from 720 to 1,000 rpm.
For free literature detailing the features and applications of the full line of Deutz MWM diesel engines,