The Sulzer RT-flex engine represents a significant advance in diesel technology. Applying common-rail fuel injection to large, low speed engines enables simpler mechanical design, easier maintenance and fewer vibration sources. There is no visible exhaust smoke at any operating speed and the RT-flex system opens the way for reduced levels of other exhaust emissions. The combination of common-rail injection and valve actuation with full electronic control enhances flexibility and greatly improves slow running capability.

During the Gypsum Centennial trials, the RT-flex engine could be run steadily at speeds down to 12rpm.

The Wartsila Corporation has reported orders for six RT-flex engines thus far, the most recent being for two Sulzer RT-flex engines to be installed in two 30,000dwt multipurpose carriers to be built at China's Shanghai Shipyard. Each vessel will be propelled by a seven cylinder Sulzer RT-flex60C engine developing 22,470hp (16,520kW) at 114rpm.

MJ Information 16627