Fuel oil composition for diesel engine

Mineral oils: processes and products – Products and compositions – Fuels

Reexamination Certificate

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C044S393000, C585S014000

Reexamination Certificate

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06972084

ABSTRACT:
It is an object of the present invention to provide a fuel oil composition for diesel engines showing good CFPP and lubricity, efficiently controlling PM emissions and containing sulfur at 0.05 wt. % or less. The present invention provides a fuel oil composition for diesel engines comprising a base stock which has normal paraffin compounds having a carbon number of 20 or more at 4.0 wt. % or less, specific carbon number distribution in the high-boiling normal paraffin compounds and polynuclear aromatic hydrocarbon compounds at 8.0 vol. % or less, contains sulfur at 0.05 wt. % or less, and is incorporated with 0.01 to 0.1 wt. % (as the active component) of an FI and 0.002 to 0.1 wt. % (as the active component) of a lubricity improver.

REFERENCES:
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patent: 5389112 (1995-02-01), Nikanjam et al.
patent: 6136049 (2000-10-01), Nakajima et al.
patent: 6136050 (2000-10-01), Nakajima et al.
patent: 6150575 (2000-11-01), Angevine et al.
patent: 6265629 (2001-07-01), Fava et al.
patent: 6776897 (2004-08-01), Bacha et al.
patent: WO01/00754 (2001-01-01), None

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