Air Emission Management BIMCO panel at Nor Shipping / Oslo, 2015-06-02 Air Emission Management Power2 & VCM

Advanced Turbocharging Power2 – two-stage turbocharging Basic potential Pressure ratios of up to 12 Turbocharging efficiencies above 75% tintercooling 25°C DhTC  tintercooling 60°C With higher pressure ratio … … increase in hTC … increase in DpCyl … more compact 2-stage system Texh const 77% DpCyl  75% Power2 1-stage 68% hTC = 65% Pressure ratio [-]  © ABB Group / ABB Turbocharging November 18, 2018 | Slide 2 | filename

Advanced Valve Train Technology VCM – valve control management Conventional (fixed) valve timing Reduced valve lift with enhanced Miller increasing throttling losses limited Miller timing reduced lift Inlet valve lift  VCM Steep closing flanks increased valve lift advanced Miller timing Variation from cycle-to-cycle replacing conventional control elements VCM Fixed VT increased lift Inlet valve lift  cycle-to-cycle Crank angle [°CA]  © ABB Group / ABB Turbocharging November 18, 2018 | Slide 3 | filename

Marine Propulsion From conventional to Power2 & VCM Principles Accommodate high pressure ratios to benefit from high turbocharging efficiencies strong Miller timing enabled by VCM low NOx for Diesel increased knock margin for gas high engine power density Use VCM as the air management control replacing conventional elements (e.g. waste gate, bypass, throttle valves) Schematic view Bmep  IMO II mod. Miller strong Miller State-of-the-art 1-stage Texh const 77% DpCyl  75% Power2 1-stage 68% hTC = 65% TC pressure ratio [-]  © ABB Group / ABB Turbocharging November 18, 2018 | Slide 4 | filename

Marine Propulsion Example: Medium Speed Diesel – FPP Reference: 25 bar bmep @ 750 rpm 3-pulse, mod. Miller, 1-stage Power2 & VCM: Engine power up 15% Const. pZmax and lv at full load Change from pulse to MPC Miller optimization for optimum efficiency (Fuel opt.) and minimum NOx (NOx opt.) Later IVC towards lower loads with VCM (reduction of Miller effect) Reference Power2 & VCM Fuel opt. NOx opt. 5 g/kWh 1 g/kWh D to ref. Bsfc E3 / 50% NOx E3 Ref. / IMO II Fuel opt. -3.1% / -4.2% -30% / -38% NOx opt. -0.5% / -1.9% -45% / -51% © ABB Group / ABB Turbocharging November 18, 2018 | Slide 5 | filename Remarks: based on simulations, NOx rather indicative

Marine Propulsion Example: Medium Speed Gas – n = const Reference: 22 bar bmep @ 750 rpm e = 12, mod. Miller, 1-stage lv control with WG Power2 & VCM: Engine power up 20% @ const. pZmax / bmep and lv at full load Strong Miller, repl. WG by VCM Increase compression ratio to same end of compression temperature hE +3.2%pts  6.5% / 12.5 g/kWh lower bsfc at full load 100% load epsilon +2.5 IVC -35°CA epsilon +3.5 IVC -50°CA IVC -20°CA Reference Bmep +20% IVC -45°CA Power2 VCM © ABB Group / ABB Turbocharging November 18, 2018 | Slide 6 | filename Remarks: based on simulations

Marine Propulsion Power2 and VCM – summary Power2 and VCM enable significant … … lower NOx for Diesel engines of 30 to 60% vs, IMO II concepts … lower fuel consumption in Gas and Diesel engines of 5%pts … higher engine power densities w/o increased of thermal loading Further potentials: Increased robustness in regard to gas qualities (lower MN w/o de-rating) Fuel and NOx optimized operating modes incl. switching capabilities (operation in ECA vs. non-ECA) Enhanced engine operating range (e.g. torque rise) Improved Diesel mode in Dual Fuel engine Improved transient capabilities © ABB Group / ABB Turbocharging November 18, 2018 | Slide 7 | filename

Marine Propulsion Scared of 2-stage …? Service steps … 1-Stage Power2 Removal of air outlet flange connection Removal of air inlet Removal of insulation Removal of air inlet casing together with the insert wall Removal of compressor casing Removal of oil connections Removal of cartridge group Removal of cartridge group © ABB Group / ABB Turbocharging November 18, 2018 | Slide 8 | filename

The Power of Power2 … © ABB Group / ABB Turbocharging November 18, 2018 | Slide 9 | filename

© ABB Group November 18, 2018 | Slide 10