MAN reveals new flagship four-stroke marine diesel engine
18 September 2017
MAN has revealed the successor to its 48/60CR engine in the company’s four-stroke line of high-performance diesel engines. The MAN 45/60CR marine diesel engine will initially be available as 12V and 14V versions with power outputs of 15,600 and 18,200 kW, respectively. For land-based power generation applications, MAN has developed the maximum power version, the 20V45/60 with 26 MW.
“The new engine combines the best features of the current 48/60CR, such as MAN’s common-rail system with ECOMAP capability, and adds new technologies such as two-stage turbocharging for an unrivaled Specific Fuel Oil Consumption,” said Wayne Jones, Chief Sales Officer of MAN Diesel & Turbo.
The 45/60CR’s power increase and low consumption are aimed at such lifecycle-cost-oriented applications as cruise liners, RoPax ferries, RoRo vessels, and dredgers, said MAN. The company is making the 45/60CR engine available first as 12V and 14V versions with 6L to 10L inline variants to follow later. The engine has been conceived as a family concept that will accommodate future derivatives, such as a dual-fuel capability.
The first set of V-type engines will be available from the end of 2020, with delivery of the first inline engines due from 2022.
The new engine has been designed to provide a high level of power density and efficiency. It utilizes Miller cycle and two-stage turbocharging, with a low-pressure and a high-pressure turbocharger arranged in series. Despite the turbocharging being two-stage, load pick-up behavior is the same as for the single-stage turbocharged 48/60CR engine, according to MAN. Therefore, operators can benefit from maximized peak pressure and optimal utilization of the Miller cycle.
Like its predecessor—the MAN 48/60CR—the new engine utilizes MAN in-house common-rail injection system. The new engine also features the MAN digital Safety and Control System, SaCoS 5000. Following a decentralized design concept, SaCoS 5000 offers optimized data availability, alarm visualization and diagnosis.
The new four-stroke engine meets IMO Tier II NOx emission standards, while IMO Tier III is met with MAN’s SCR system; the engine is shortly scheduled for approval by all major classification societies.
The MAN V45/60CR can be combined with the MAN ECOMAP 2.0 technology that provides the flexibility to run an engine following different SFOC power characteristics, to optimize efficiency at different load points. The latest development with this technology is the integration of the MAN SCR system into ECOMAP, offering further possibilities to optimize the efficiency of the propulsion system, taking into account fuel and urea prices.
According to calculations by MAN, a ship operating with an MAN 45/60CR engine can achieve a fuel-oil cost benefit of 5-12% in comparison with a vessel powered by an equivalent engine from other manufacturers.
Source: MAN