ABB has launched two new turbochargers optimised for small and medium bore two-stroke diesel and gas engines.
The A255-L and A260-L models are smaller than previous ABB turbochargers to allow for installation in space-optimised engine rooms. The new turbochargers retain a high-power density within the smaller frame size and incorporate the latest rotor component technologies for maximum efficiency and lower fuel consumption and emissions. according to ABB, the turbochargers also offer low maintenance costs.
ABB’s new A255-L and A260-L turbochargers are highly suited to low pressure dual fuel engines to optimise combustion. The high turbocharging efficiency provided by the new A255-L and A260-L turbochargers ensures that high air-fuel ratio is maintained in high-load operation, thus reducing the tendency for fast combustion which can adversely affect operation and emissions. The A255-L and A260-L turbochargers also facilitate the utilisation of emission abatement technologies for NOx and SOx reduction.
According to ABB, the new A255-L and A260-L turbochargers can reduce the energy efficiency design index (EEDI) of smaller cargo vessels in the size range of 10’000- 40’000 dwt that make use of small and medium bore two-stroke engines. These will typically represent vessels such as bulk carriers, tankers, container feeders and car carriers.
“We believe further focus will be placed on turbocharger efficiency in the future, alongside higher compressor pressure ratio demands, to enable two-stroke engines to reach their full potential. Our A255-L and A260-L turbochargers will support this demand, delivering the highest levels of turbocharger efficiency and power density while enabling small-bore two-stroke engines to achieve lower fuel consumption, and complying with latest emissions regulations,” said Alexandros Karamitsos, head of global sales for Product Line Low-speed Turbocharger, ABB.
“The A255-L and A260-L turbochargers are designed to operate on all fuel types and on engines specified for both IMO Tier II or Tier III emissions levels. Similar to other turbocharger products in our A200 series, a full range of matching components will be available to ensure an optimised on-engine specification. Our drydock-to-drydock service concept will also be available, with no need for intermediate turbocharger inspection.”