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Figure 6: Reduction of the specific fuel consumption SFOC of ME/ME-C engines by

means of VTA

SFOC-optimized load range Tuning method SFOC change [g/kWh]

35% 50% 65% 80% 100%

High load (85-100%) Standard L

engine 4 0 -2.5 -3 0

Partial load (50-85%) VTA 2 -2 -4.5 -4 2

Low load (25-70%) VTA 1 -3 -5.5 -3 1

Standard L

engine – turbocharger without adjustable turbine nozzle ring

VTA – turbocharger with adjustable turbine nozzle ring

Table 9: Optimization potential – MC/MC-C/ME-B Tier II engines, SMCR = L

1 Adjustable turbine nozzle ring (VTA)

1.3 Low-speed propulsion engines from MAN B&W

2013-12-04 - de

MAN Diesel & Turbo

12 (38)

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Man VTA Specifications

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