Wärtsilä extends its offering in the low-speed X-generation engine series with the new X92 with a bore of 920 mm. The new engine is more efficient in terms of fuel consumption and emissions and will serve the market for large and ultra-large container vessels with a size above 8000 teu to any size under construction and beyond. The first 92-bore engine is planned for delivery in 2014.
The X92 employs electronically-controlled common-rail technology. Savings in fuel consumption of up to ten per cent and even beyond are expected compared to today’s fleet. This directly reduces the emission levels of carbon dioxide, making it easier for the shipyard to achieve a better Energy Efficiency Design Index (EEDI). Subsequently, emissions of sulphur oxides and nitrogen oxides decrease as well. The RPM and power range offer flexibility for a wide variety of vessel speeds. The X-series engines feature an extra long stroke and reduced engine revolutions allowing a larger propeller diameter.
X-Series Marine Engines
The low-speed X-generation engine series was launched in May 2011 with two mid-sized engines Wärtsilä X62 and Wärtsilä X72, designed specifically for merchant vessels that use mid-size low-speed engines, such as capesize bulk carriers, Panamax bulk carriers, Suezmax tankers and Panamax container vessels. The X-series also includes the Wärtsilä X35 (picture) and Wärtsilä X40 engines, which cover the small-bore end of the market and provide power for a wide variety of ship types, such as small bulk carriers and product tankers, general cargo vessels, reefers, feeder containerships, and small LPG carriers. The first of the new electronically controlled Wärtsilä X35 low-speed engines was successfully started in November 2011 and passed its factory test in February 2012.
