7 results about "Gasoline direct injection" patented technology

Fuel additive compositions having at least one acylated detergent, at least one Mannich detergent, and at least one polyether and / or polyetheramine. The acylated detergent may be the reaction product of a hydrocarbyl-substituted acylating agent and a nitrogen containing compound having at least one amino group, that may optionally be quaternizable, and at least one oxygen or nitrogen atom capable of reacting with the hydrocarbyl-substituted acylating agent. The compositions are useful for reducing the formation of carbonaceous deposits and / or cleaning carbonaceous deposits in an engine, such as a gasoline direct injection engine.

A fuel additive including a combination of a nitrogen-containing fuel detergent and a polyether amine. The foregoing combination capable of use with hydrocarbon fuels (e.g., gasoline optionally with ethanol therein) or in fuel additive concentrate compositions to be diluted by a hydrogen fuel. The combination of the polyether amine and the nitrogen-containing fuel detergent may prevent or remove carbonaceous deposits in internal combustion engines, especially gasoline direct injection engines.

The present disclosure relates to fuel additive packages, fuels, and methods of achieving emission particulate reductions in gasoline direct injection (GDI) engines using select Mannich detergents (e.g., reaction products of a hydrocarbyl-substituted hydroxyaromatic compound, an aldehyde, and an amine). In one approach or embodiment, the select Mannich detergents herein for emissions particulate reductions include one or more of the following characteristics: (i) certain molar ratios of the hydroxyaromatic compound, the amine, and the aldehyde; (ii) select oligomer structures; and / or (iii) certain isomeric forms of polyisobutylene substituents on the hydroxyaromatic compound.

The invention relates to a closed-loop control method for injection flow of an oil injector of a gasoline direct injection engine. The method comprises the following steps: performing second-order filtering processing on fuel rail pressure P to output Pfilt; carrying out discrete difference on the Pfilt to obtain a fuel rail pressure deviation Pdef; the fuel rail pressure deviation Pdef is subjected to first-order filtering processing, and Pdef-filt is output; the absolute value of the Pdef-filt is summed to obtain the fuel index FIinj of the current fuel injector; the fuel index difference delta FI between the single fuel injector and the reference fuel injector is multiplied by the fuel injection pulse width proportional gain gain to obtain a compensation fuel injection pulse width delta pw; and the fuel injection pulse width pwinj of the compensated single fuel injector is obtained by adding the fuel injection pulse width pwmaster of the reference fuel injector to the compensation fuel injection pulse width delta pw. Compared with the prior art, accurate fuel control of the fuel injector in a nonlinear area is met, and emission of a direct injection engine in a high-pressure gasoline cylinder is effectively reduced.

The present disclosure provides fuel additives including Mannich detergent additive(s) and Mannich-based quaternary ammonium salt detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines.

The present disclosure provides fuel additives including Mannich detergent additive(s) and succinimide detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines.

This disclosure generally relates to filters, methods, and systems for filtering particulate matter from the exhaust of internal combustion engines such as gasoline direct injection engines, as well as methods for preparing particulate filters.