Lubricity of Reformulated Diesel Fuel - Experience in Finland

Pirjo Saikkonen; Seppo Mikkonen; Martti Makela; Aapo Niemi

doi:10.4271/961948

1996-10-01

Lubricity of Reformulated Diesel Fuel - Experience in Finland 961948

Lubricity testing of reformulated diesel fuels (sulfur <0 005 w-%, aromatics <20 vol-%) was started in 1990. A 1000 hour in-house test rig with distributor pumps was used for testing fuels and additives. When lubricity is not adequate, excessive wear is seen in the pump. A field test on 140 buses each accumulating 150 000 - 250 000 km with reformulated diesel was carried out. Reformulated diesel has been on the market since 1993 without problems.

Lubricity was evaluated with HFRR test and compared to the pump rig results. HFRR overestimated the need for lubricity additives. Fuel sulfur was found to be not the only indicator of lubricity and lubricity of low sulfur diesel was as good as high sulfur when other fuel parameters were kept constant.

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Lubricity of Reformulated Diesel Fuel - Experience in Finland 961948

SAE MOBILUS