Low-sulfur diesel fuels containing organometallic complexes

US5376154A · kind A · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• Daniel T. Daly · Maumee, US
• Paul E. Adams · Willoughby Hills, US
• Nai Z. Huang · Cambridge, US
• Scott T. Jolley · Mentor, US
• Frederick W. Koch · Willoughby Hills, US
• Christopher J. Kolp · Euclid, US
• Stephen H. Stoldt · Powell, US
• Reed H. Walsh · Mentor, US
• Richard A. Denis · Parma Heights, US
• Dennis M. Dishong · South Euclid, US

Key dates

• Filing date: Sep 3, 1991
• Grant date: Dec 27, 1994
• Expiry date: Sep 3, 2011

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02B3/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to low-sulfur diesel fuels which are useful with diesel engines equipped with exhaust system particulate traps. These fuels contain an effective amount of an organometallic complex to lower the ignition temperature of exhaust particles collected in the trap. The sulfur content of these diesel fuels is no more than about 0.1% by weight, preferably no more than about 0.05% by weight. The organometallic complex is soluble or stably dispersible in the diesel fuel and is derived from (i) an organic compound containing at least two functional groups attached to a hydrocarbon linkage, and (ii) a metal reactant capable of forming a complex with the organic compound (i), the metal being any metal capable of reducing the ignition temperature of the exhaust particles. The functional groups include .dbd.X, --XR, --NR.sub.2, --NO.sub.2, .dbd.NR, .dbd.NXR, .dbd.N--R*--XR, ##STR1## --CN, --N.dbd.NR and --N.dbd.CR.sub.2 ; wherein X is O or S, R is H or hydrocarbyl, R* is hydrocarbylene or hydrocarbylidene, and a is a number (e.g., zero to about 10). Useful metals include Na, K, Mg, Ca, Sr, Ba, Ti, Zr, V, Cr, Mo, Mn, Fe, Co, Cu, Zn, B, Pb, Sb, and mixtures of two or more ther…