OVERBASED METALLIC SALT DIESEL FUEL ADDITIVE COMPOSITIONS FOR IMPROVEMENT OF PARTICULATE TRAPS

摘要

A fuels additive metallic salt composition effective in improving the operation of diesel engine particulate traps when added to a diesel fuel so as to provide 1-25 ppm metal in the fuel which comprises an oil soluble or oil dispersible overbased metal salt of an acidic organic compound, said salt composition containing 5 - 85 wt.% of a stoichiometric excess of metal over that required to neutralize the anionic portion of the salt, the metal being selected from the group consisting of Ca, Fe, M g, Sr, Na, Ti, Zr, Mn, Zn and Ce.