MTU 12 V 4000 M63 Specifikace stáhnout pdf (Strana 36)

34 Fuels

Cetane number

DIN 51 603 -1 does not specify the cetane number. If heating oil is used, the cetane number must

therefore be quoted by the supplier or measured and be at least 45 as required in the MTU Fluids and

Lubricants Speciﬁcation. The calculated cetane index must not be less than 42.

Sulfur content

In accordance with DIN 51603 -1, the maximum sulfur content for EL Standard heating oil is speciﬁed as 1000

mg/kg to 50 mg/kg.The max. sulfur content for EL Standard low-sulfur heating oil is 50 mg/kg.

Lubricity

As a basic principle, lubricity additives are not added to the heating oil. Lubrication problems can therefore

be expected when using these qualities of heating oil because of the missing additives.

Compliance with the lubricity speciﬁcation as per DIN EN ISO 12156-1 (HFRR-Test) of max. 460 µm

must be ensured in coordination with the respective heating oil supplier.

Valve wear

On Series 538, 595, 956, 1163 engines with cylinder heads not ﬁtted with valve seat inserts, the use of

low-sulfur heating oil (< 50 mg/kg) can lead to increased valve seat wear. This wear can be reduced by the

addition of anti-wear additives. Approved additives are listed in Table 11 and must be added to the heating

oil at the speciﬁed concentration. The additive must be ﬁlled before every refueling.

Supplementary fuel additives

The engines are so designed that satisfactory operation with normal, commercially available fuels is

ensured. Many of these fuels already contain performance-enhancing additives.

The additives are added by the supplier as the agent responsible for product quality.

The anti-wear additives in (→ Table Approved anti-wear additives (Table 11) on page 33) represent an exception.

Attention is drawn to the fact that the use of diesel fuels or additives other than those stipulated in the

MTU Fluids and Lubricants Speciﬁcations is always the responsibility of the operator.

Microorganisms in fuel

Bacterial attack and sludge formation may occur in the fuel under unfavorable conditions. In

such cases, the fuel must be treated with biocides in accordance with the manufacturer’s

speciﬁcations. Overconcentration must always be avoided.

For prophylactic use, the appropriate concentration must be identiﬁed in consultation with the relevant manufacturer.

Approved biocides (Table 12)

Manufacturer

Brand name

Concentration for use

ISP Global Technologies

Deutschland GmbH

Emil-Hoffmann-Str. 1a

50996 Köln

Tel. +49 (0)2236 9649 304/301

Fax. +49 (0)2236 9649 295

Bakzid 100 ml per 100 l

Schülke und Mayr

22840 Norderstedt

Tel. +49 (0) 40/52100-00

Fax. +49 (0) 40/52100-244

Grota MAR 71

StabiCor 71

0.5 l / ton

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