Volvo Penta Offers Larger Engine Range

Sweden's Volvo Penta has introduced a new engine range that significantly expands its power output up to 1,380 kW (1,850 hp) and opens vast new markets for the company's products.

The new range will include in-line six cylinder units, and, for the first time for the company, V I 2 and VI6 configuration engines.

The new range comprises five basic engine sizes, from 24.5 - 65.4 liter displacement. The new engines are designed to be reliable, fuel efficient with low emissions, a suitable power choice for a wide range of vessels from coastal freighters and fishing vessels to harbor tugs operating on inland waters.

In addition, the engines are reportedly suitable for auxiliary duties.

On the table below are the power specifications for the new line.

Each engine is available in either single or twin circuit cooling systems, the latter resulting in a small but significant increase in engine output. Except for the D34 diesels, which have a bore of 150 mm and a stroke of 160 mm, all units in the range feature a 170 mm bore with a stroke of 180 or 220 mm.

The D25 and D30 are in-line six cylinder engines, the D34 and D49 are VI 2s, while the D65 is a VI6. Output ranges from 440 kW (590 hp) up to 1,380 kW (1,850 hp) at speeds between 1,350 and 2,000 rpm.

All engines have been optimized for efficient fuel consumption and gentle emissions through optimum design of the combustion chamber combined with the fuel injection system. To help ensure long life, the engine block is rigid and features main bearings with four bolts.

The crankshaft is single piece, internally forged with balance weights. Another interesting feature is that the valves are rotating to extend lifetime and the seats are made of special alloy steel for greater wear resistance.

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Maritime Reporter Magazine, page 33, Nov 2000

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