Man VTA

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
1
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
1
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
1 Adjustable turbine nozzle ring (VTA)
1.3 Low-speed propulsion engines from MAN B&W
2013-12-04 - de
1
MAN Diesel & Turbo
12 (38)
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