New High-Performance Turbocharger Offered By ABB Turbo Systems

ABB Turbo Systems Ltd. recently announced plans to expand the RR..1 turbocharger product family with the introduction in spring 1991 of the RR 131, the smallest framesize BBC Turbocharger. The company already markets the RR 151, RR 181, and RR 221.

The RR 131 is designed for engines with output ranges as small as 290 to 760 kW per turbocharger.

With the new unit, ABB said typical high speed diesel engines will run with up to 20 bar brake mean effective pressure at outstanding brake specific fuel consumptions as well as moderate exhaust gas temperatures.

During the first trials of the RR 131 on the test bed, ABB engineers measured an overall turbocharger efficiency of 60 percent at compressor pressure ratios between 1.8 and 2.6.

According to ABB, the RR 131 will handle air volume flows between 0.45 and 1.30 m3/sec. at a 3:1 compressor pressure ratio. The overall turbocharger efficiency level will be around 60 percent while compressor pressure ratios will be about 3.2 for large trims and 3.7 for small trims. Turbine inlet tempera- ture limit will be 1,382° F.

The RR 131 will include the same design features as the larger types of the RR series, which include one piece, forged aluminum compressor wheel; backward curved compressor and splitter blades; mixed-flow turbine wheel; watercooled bearing housing as an option; tapered-land thrust bearing and a large variety of different matching hardware.

For free literature detailing the ABB Turbo Systems' RR 131, Circle 2 on Reader Service Card

Maritime Reporter Magazine, page 34,  Sep 1990

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.