Rolls-Royce has approved its mtu Series 1163 and 8000 engines for use with sustainable fuels such as HVO with no modifications.
The approval relates to all cylinder variants – 16 and 20V – between 4,800 and 10,000kW.
The engines have also been certified IMO III compliant with SCR system.
“With this portfolio expansion, we are making our mtu large engines future-proof and more climate-friendly in line with our strategy,” said Knut Müller, senior vice president Global Governmental Business at Rolls-Royce Power Systems. “They have been setting standards in their power range for many years in terms of power density, efficiency and economy.”
He added: “The most important change compared to the previous engines for IMO II is the new mtu exhaust gas aftertreatment, the core component of which is an SCR system in which nitrogen oxide emissions are reduced by 75% compared to the IMO II limits.”
And he explained that the SCR system is an actively controlled system in which the emissions upstream and downstream of the SCR are continuously measured ensuring optimum and compliant operation of the exhaust gas aftertreatment system.
The system can be installed either horizontally or vertically.
“There is a lot of interest from many customers in the marine industry who want to improve their carbon footprint, particularly in HVO,” explained Denise Kurtulus, vice president Global Marine at Rolls-Royce Power Systems.
“Test results on the test bench and in operation at customer sites show a significant reduction in greenhouse gases as well as nitrogen oxide and particulate emissions.”