Mitsui E&S Equipment
Energy-Saving Equipment (VCR, EcoEGR, THS2, Shaft Generator)
Mitsui E&S energy-saving technologies for marine main engines: variable compression ratio (VCR), EcoEGR, THS2 turbo hydraulic waste heat recovery (up to 2% fuel saving) and crankshaft-driven shaft generators.
Description
Mitsui E&S offers a range of energy-saving equipment and technologies for marine main engines to cut fuel consumption, emissions and operating costs.
VCR (Variable Compression Ratio System)
- Changes the compression ratio to suit engine output and fuel type, improving fuel consumption and reducing CO2
- Commercialised by Mitsui E&S DU together with licensor WinGD
EcoEGR
- Combines lower fuel consumption with NOx reduction
- Engine tuned for best SFOC, with EGR operated in all Tier II and Tier III areas, resolving the usual SFOC/NOx trade-off and improving EEDI
- Also applicable to dual-fuel engines (except ME-GIE and ME-LGIP)
THS2 (Turbo Hydraulic System) waste heat recovery
- Recovers surplus exhaust energy from a high-efficiency turbocharger as hydraulic power to assist engine rotation
- At reduced speed, hydraulic power from the crankshaft supports turbocharger rotation
- Reduces fuel consumption by up to 2% and improves EEDI
- Very compact compared with conventional waste heat recovery systems; no major engine room redesign needed
Shaft generator
- Mounted at the fore end of the main engine crankshaft to generate electrical power
- Improves EEDI and helps meet tightening regulations
- Reduces OPEX by avoiding auxiliary generator running (maintenance, SCR urea)
- Reduces crew workload and makes use of main engines that lead in alternative fuel capability
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