Requirements on engine
▪ Injection pumps with special coating and with
sealing oil system.
▪ Fuel pipes and leak fuel pipes must be equip-
ped with heattracing (not to be applied for bio-
fuel category 1). Heattracing to be applied for
biofuel category 2 outside covers of injection
pump area and for biofuel category 3 also
inside injection pump area.
▪ Inlet valve lubrication (L32/40)
▪ Nozzle cooling to be applied for biofuel cate-
gory 2 and 3. (L32/40)
▪ Charge air temperature before cylinder 55° C to
minimize ignition delay.
Please be aware
▪ Depending on the quality of the biofuel, it may
be necessary to carry out one oil change per
year (this is not taken into account in the details
concerning lubricating oil consumption).
▪ An addition to the fuel oil consumption is neces-
sary:
2 g/kWh addition to fuel oil consumption (see
chapter fuel oil consumption)
▪ Engine operation with fuels of low calorific value
like biofuel, requires an output reduction:
– LCV ≥ 38 MJ/kg Power reduction 0%
– LCV ≥ 36 MJ/kg Power reduction 5%
– LCV ≥ 35 MJ/kg Power reduction 10%
MAN Diesel & Turbo
B 11 00 0
Explanatory notes for biofuel
3700063-9.0
Page 2 (2)
L28/32S, L27/38S, L23/30S, L21/31S, L16/24S, V28/32H, V28/32S, L16/24,
L21/31, L23/30H, L27/38, L28/32H
2015.11.26
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