Reducing deposit formation in diesel engines
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United States of America Patent
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Apr 30, 1996
Issued Date -
N/A
app pub date -
Sep 12, 1995
filing date -
Mar 2, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to overcoming a new deposit problem, namely the formation on injector components and intake valves of diesel engines of deposits containing a substantial amount of inorganic material along with some organic binder materials. This problem has been traced to the presence of trace amounts of alkali metal salts in the fuel composition, and the invention overcomes the problem by including in such fuels a minor amount of at least one fuel-soluble complexing agent capable of forming in the diesel fuel oil a fuel-soluble complex with said inorganic alkali metal salt and/or the alkali metal cation thereof. The complexing agents used are selected from crown ethers, aza-crown ethers, polycrown ethers, lariat-crown ethers, cryptands, spherands, and bridged spherands.
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