Rolls-Royce has launched a 16-valve 500kW per cylinder diesel engine for power generation which uses digital fuel injection technology to cut emissions and improve operating control. The injection system was developed by German engineer Bosch.
Running on distillate and heavy oil the Allen 5016 burns fuel at 180g/kWh. The fuel injection system allows injection quantity and timing to be monitored precisely, giving the operator more control of exhaust emissions.
This also enables the engine’s performance to be adapted for differing running conditions. In the case of co-generation, the operator can decide on the priority given to electrical generation, energy output, fuel consumption or emission levels.
To optimise fuel efficiency, Rolls-Royce engineers used an ABB Turbosystems TPL65E single-entry turbocharger producing pressure ratios of 4.7:1. The high pressure ratios are essential to the efficient performance of the main engine.
The crank case and cylinder head are made from spheroidal graphite iron and compacted graphite iron respectively, which cuts weight and increases strength. The valve seats for inlets, exhausts and injectors are intensively cooled to improve reliability.
The release of the 5016 is the latest stage in Rolls-Royce’s diesel business plans. The company says it is committed to developing the business using its own designs and those of others through alliances and joint ventures.