Swiss-based power and automation technology group ABB announced the first application[ds_preview] on a marine engine of its Power2 800-M second generation two-stage turbocharging solution. The new Wärtsilä 31 engine (see above) is equipped with it, launching Power2 800-M firmly into the market, ABB said in a statement. »The technology has increased pressure ratio capabilities up to 12, from 8 in the first generation, and turbocharger efficiency beyond 75%, compared to a single-stage turbocharger which is typically around 65–70%. This combination of higher efficiency and higher pressure ratio contributes to increased engine power density, and also translates into significant potential for saving on fuel consumption costs and up to 60% lower NOx emissions«, explained Christoph Rofka, Senior General Manager/Products. According to ABB, Power2 800-M second generation has been developed from scratch with the two turbochargers working seamlessly together to extract a higher percentage of residual energy from the exhaust gases. The increased pressure ratios and turbocharging efficiencies support engine concepts enabling »six figure savings« on fuel annually, said Rofka.
