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US 2026/0078313 A1Published application
Fuel composition
AssigneeShell USA, Inc.
InventorsJohn Henry MENGWASSER, Bill COLUCCI
Life of this patent
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AssigneeShell USA, Inc.
InventorsJohn Henry MENGWASSER, Bill COLUCCI
Estimating the term…
An unleaded gasoline fuel composition for improving engine performance in spark ignition internal combustion engines comprises: a major amount of gasoline base fuel, and a detergent additive package, wherein the detergent additive package comprises a quaternary ammonium internal salt detergent and a Mannich base detergent mixture, wherein the quaternary ammonium internal salt is obtained from amines or polyamines that is substantially devoid of any free anion species, wherein the Mannich base detergent mixture comprises a first Mannich base detergent component derived from a di- or polyamine and a second Mannich base detergent component derived from a monoamine, wherein the weight ratio of the first Mannich base detergent to the second Mannich base detergent mixture ranges from about 1:6 to about 3:1, and wherein the weight ratio of the quaternary ammonium internal salt detergent and the Mannich base detergent mixture ranges from about 1:10 to about 1:100.
An unleaded gasoline fuel composition for improving engine performance in spark ignition internal combustion engines, wherein the unleaded a gasoline fuel composition comprises:
Use of an unleaded gasoline fuel composition for improving engine and/or injector performance in a gasoline direct injection engine, wherein the unleaded gasoline fuel composition comprises a major amount of gasoline base fuel and a detergent additive package, wherein the detergent additive package comprises a quaternary ammonium internal salt detergent and a Mannich base detergent mixture, wherein the quaternary ammonium internal salt is obtained from amines or polyamines that is substantially devoid of any free anion species, and wherein the Mannich base detergent mixture comprises a first Mannich base detergent component derived from a di- or polyamine and a second Mannich base detergent component derived from a monoamine, wherein the weight ratio of the first Mannich base detergent to the second Mannich base detergent mixtures ranges from about 1:6 to about 3:1, and wherein the weight ratio of the quaternary ammonium internal salt detergent and the Mannich base detergent mixture ranges from about 1:10 to about 1:100.
Method for improving engine performance and/or injector performance in a gasoline direct injection engine, the method comprising supplying to the engine an unleaded gasoline fuel composition comprising a major amount of gasoline base fuel and a detergent additive package wherein the detergent additive package comprises a quaternary ammonium internal salt detergent and a Mannich base detergent mixture, wherein the quaternary ammonium internal salt is obtained from amines or polyamines that is substantially devoid of any free anion species, and wherein the Mannich base detergent mixture comprises a first Mannich base detergent component derived from a di- or polyamine and a second Mannich base detergent component derived from a monoamine, wherein the weight ratio of the first Mannich base detergent to the second Mannich base detergent mixtures ranges from about 1:6 to about 3:1, and wherein the weight ratio of the quaternary ammonium internal salt detergent and the Mannich base detergent mixture ranges from about 1:10 to about 1:100.
Dependencies are inferred from the claim text.