MTU 12 V 4000 M63 Specifiche Scaricare il pdf (Pagina 34)

32 Fuels

• For Series 457, 460/1800, 900 and 500 engines, special equipment is available which facilitates an increase in

the engine oil change intervals for operation with 100% FAME. This involves ﬁtting the engines with special

equipment Code MK21 (special unit pump) and Code MK04 (fuel preﬁlter with heated water separator).

Table 10

Engine version Engine oil change interval

Engines not ﬁtted with special equipment for operation

with FAME

Reduction of engine oil change interval to 30% of the

interval required f or operation with fossil diesel f uels.

Engines ﬁtted with special equipment Code MK21 and

Code MK04

Reduction of engine oil change interval to 50% of the

interval required f or operation with fossil diesel f uels.

The relevant engine oil change intervals must be complied with without fail!

Exceeding the engine oil change intervals can cause engine damage!

• Operation with 100% FAME requires shortened fuel ﬁlter change intervals. A new fuel ﬁlter

must be ﬁtted each time the engine oil is changed.

• Fuel and engine oil must be changed approximately 25 operating hours after conversion to FAME due to

the danger of blockage caused by loosened deposits (FAME has a pronounced cleaning effect).

• Over longer periods, fuel ﬁlter service life may be reduced as a result of old residues being carried into the ﬁlter

from the fuel system. A special, approved fuel preﬁlter can be installed as an improvement. This f uel preﬁlter

with heated water separator is already installed on engines ﬁtted with special equipment Code MK04.

Engine power and engine standstill

• Due to its caloriﬁc value, operation with 100% FAME involves a reduction of approx. 8%-10%

in engine power. This leads to a corresponding increase in fuel consumption as compared to

operation with diesel fuel. Engine power corrections are not permissible.

• Prior to any extended period out of operation, the fuel system must be ﬂushed out in order to prevent

congestion. For ﬂushing, the engine must be operated for at least 30 minutes on diesel fuel.

General information

• We can make no comment with regard to t he level of FAME resistance of the fuel system,

which is not part of our scope of supply.

• FAME is an extremely effective solvent. Any contact with paint, for example, must therefore be avoided.

• The characteristic smell of FAME exhaust, especially during long periods of idling, may be perceived

as unpleasant. The nuisance caused by smell can be reduced by an oxidation catalyst which may

be installed by the vehicle / equipment manufacturers at their own risk.

Our company accepts no responsibility for and provides no warranty in respect of any fault or damage

connected in any way with the use of FAME of a lower quality or resulting from noncompliance with

our speciﬁcations on operation using FAME. All resultant irregularities and consequential damage

lie outside our responsibility.

Vegetable oils as an alternative to diesel fuel

The use of pure vegetable oils as an alternative to diesel fuel or FAME is strictly prohibited due to the

absence of standardization and to negative experience (engine damage caused by coking, deposits

in the combustion chambers and oil sludge)!

Low-sulfur diesel fuels

Sulfur is contained in chemically bound form in crude oil and is therefore present in fuel at varying levels.

A sulfur content of max. 50 mg/kg or 10 mg/kg (depending on category) has been a European Union requirement

since 01.01.2005. The term “sulfur-free” is used here to designate diesel fuels with a sulfur content of max. 10

mg/kg. Low-sulfur diesel fuels (max. 50 mg/kg) are to be recommended for environmental reasons. In order to

avoid problems with wear, lubricity additives, among other things, are added by the manufacturer.

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MTU 12 V 4000 M63 Specifiche Pagina 34

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