Wärtsilä has been awarded a contract by DSD Shipping AS of Stavanger, Norway to retrofit the main engines on four DSD Shipping vessels with the Retrofit Pulse Lubricating System.The Retrofit Pulse Lubricating System (RPLS) is designed to lower the oil feed rate to the engine, thus cutting the consumption of lubricating oil. This creates obvious savings in operating costs, and also has a positive effect on exhaust emissions.
In addition to the RPLS, the installation will include the MAPEX-PR online liner wall temperature monitoring and alarm system, and a propeller shaft power measurement system. The Retrofit Pulse Lubricating System is a timed lubricating system. It distributes cylinder lubricating oil in pressurised pulses precisely into the piston ring package, where it is evenly distributed around the circumference of the liner.
This system was designed to retrofit existing Wärtsilä mechanically controlled RTA and electronically controlled RT-flex type engines. It is fitted as standard for new RT-flex and RTA type engines. The Retrofit Pulse Lubricating System is an example of applying electronic controls to engines already in operation in order to deliver improved performance and flexibility.