Diesel fuel containing an additive which improves the combustion

Details Diesel fuel containing an additive which improves the combustion Diesel fuel containing an additive which improves the combustion

1993-04-16

1996-06-04

Howard, Jacqueline V.

Fuel and related compositions

Liquid fuels

Containing organic -c

44436, 44450, 44451, C10L 118

Patent

active

055229050

ABSTRACT:
A diesel fuel containing an additive which improves the combustion of soot, for reducing the pollutant emission in the combustion exhaust gases from diesel engines by discontinuous burning-off of soot which has been precipitated in the exhaust gas filter, is described. For this purpose, a lithium, sodium or potassium salt of an aliphatic or aromatic alcohol, of a phenol, of an aliphatic acid or of a naphthoic acid, phenylacetic acid or cinnamic acid is added, singly or as a mixture, to the diesel fuel before the combustion of the latter in the internal combustion engine. As a result of the addition of the alkali metal salts, the ignition temperature of the soot precipitated in the particle filter is reduced, and the soot is oxidized at a temperature which is considerably lower than the normal ignition temperature. The regeneration range for the particle filter is therefore reached much more frequently in real running practice. This avoids a critical filter loading with soot, which can lead to filter damage during burning off. A further advantage of the process described is that, according to present knowledge, no additional substances with a health risk are emitted during running as a result of the addition of these alkali metal salts to the diesel fuel.

REFERENCES:
patent: 2642344 (1953-06-01), Livingston
patent: 4668247 (1987-05-01), Berenyi

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