Internal-combustion engines – Miscellaneous – Fuels – lubricants and additives
Patent
1985-03-21
1986-09-23
Cross, E. Rollins
Internal-combustion engines
Miscellaneous
Fuels, lubricants and additives
123 66, 123668, 123669, 44 69, 44 70, F02B 7512
Patent
active
046128808
ABSTRACT:
The control of the octane requirement increase phenomenon in an internal combustion engine is achieved by introducing into an internal combustion engine, having manifold and/or combustion surfaces which inhibit the formation of engine deposits, along with the combustion charge, a fuel composition containing an octane requirement increase-inhibiting amount of (a) an oil-soluble iron compound and (b) carboxylic acids and/or ester derivatives thereof. In particular the esters of a tertiary alcohol and an unsubstituted, mono-carboxylic acid having at least two carbon atoms, e.g., t-butylacetate, in combination with dicyclopentadienyl iron provides an effective octane requirement increase-inhibiting additive for said internal combustion engine. Preferably the manifold and combustion surfaces of said internal combustion engine are coated with a low density alumina or zirconia coating. More preferably said alumina or zirconia coating further comprises a carbon gasification catalyst, e.g. a nickel, cobalt and manganese-containing catalyst or an iron, copper and cerium-containing catalyst, dispersed therein.
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Brass Stephen
Croudace Michael C.
Wusz Timothy
Baran Robert J.
Cross E. Rollins
Sandford Dean
Union Oil Company of California
Wirzbicki Gregory F.
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